diff --git a/ChangeLog b/ChangeLog
index e7582482..200be06d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,21 +1,22 @@
 -----18.12-----
 
 New Features:
 	* Add Markdown entry type
 	* Animated highlighting of the currently calculated command entry
 	* Visualization of pending command entries (queued, but not being calculated yet)
 	* Allow to format command entries (background color, foreground color, font properties)
 	* Allow to insert new command entries at arbitrary places in the worksheet by placing the cursor at the desired position and starting typing.
 	* For expressions having multiple commands, show the results as independet result objects in the worksheet
 	* Add support for opening worksheets by relative paths from console
 	* Add support for opening multiple files in one Cantor shell
 	* Change the color and the font for when asking for additional information in order to better discriminate from the usual input in the command entry
 	* [Maxima] Deal with additional required inputs when fetching help for commands via the '??' operator
 	* Added shortcuts for the navigation across the worksheets (Ctrl+PageUp, Ctrl+PageDown)
 	* [Julia] Add support for class member autocompletion
 	* [Python] Add runtime autocompletion
+	* Add action in 'View' submenu for zoom reset.
 
 Bug fixes:
 	* BUG 363606 - [Python] Different python sessions shouldn't share the same variables
 	* BUG 372075 - [Python] Don't exit Cantor on calling exit() in python sessions
 	* BUG 395213 - [R] Add rehighlighting for entries after execution in R backend
diff --git a/src/cantor_part.cpp b/src/cantor_part.cpp
index 7203f677..f0639e7c 100644
--- a/src/cantor_part.cpp
+++ b/src/cantor_part.cpp
@@ -1,902 +1,903 @@
 /*
     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.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
 */
 
 #include "cantor_part.h"
 
 #include <config-cantor.h>
 
 #include <KLocalizedString>
 #include <QIcon>
 #include <KParts/Event>
 #include <KParts/GUIActivateEvent>
 #include <KPluginFactory>
 #include <KAboutData>
 
 #include <QAction>
 #include <KActionCollection>
 #include <QFileDialog>
 #include <KStandardAction>
 #include <KZip>
 #include <KToggleAction>
 #include <KService>
 #include <KServiceTypeTrader>
 #include <KRun>
 #include <QProgressDialog>
 #include <KMessageBox>
 #include <KNS3/UploadDialog>
 
 #include <QElapsedTimer>
 #include <QFile>
 #include <QTextStream>
 #include <QTextEdit>
 #include <QTimer>
 #include <QPrinter>
 #include <QPrintPreviewDialog>
 #include <QPrintDialog>
 #include <QVBoxLayout>
 
 #include "worksheet.h"
 #include "worksheetview.h"
 #include "searchbar.h"
 #include "scripteditor/scripteditorwidget.h"
 #include "lib/backend.h"
 #include "lib/extension.h"
 #include "lib/assistant.h"
 #include "lib/panelpluginhandler.h"
 #include "lib/panelplugin.h"
 #include "lib/worksheetaccess.h"
 
 #include "settings.h"
 
 
 //A concrete implementation of the WorksheetAccesssInterface
 class WorksheetAccessInterfaceImpl : public Cantor::WorksheetAccessInterface
 {
 
   public:
     WorksheetAccessInterfaceImpl(QObject* parent, Worksheet* worksheet) :   WorksheetAccessInterface(parent),  m_worksheet(worksheet)
     {
         qDebug()<<"new worksheetaccess interface";
         connect(worksheet, SIGNAL(modified()), this, SIGNAL(modified()));
     }
 
     ~WorksheetAccessInterfaceImpl() override = default;
 
     QByteArray saveWorksheetToByteArray() override
     {
         return m_worksheet->saveToByteArray();
     }
 
     void loadWorksheetFromByteArray(QByteArray* data) override
     {
         m_worksheet->load(data);
     }
 
     Cantor::Session* session() override
     {
         return m_worksheet->session();
     }
 
   void evaluate() override
     {
         m_worksheet->evaluate();
     }
 
     void interrupt() override
     {
         m_worksheet->interrupt();
     }
 
   private:
     Worksheet* m_worksheet;
 };
 
 CantorPart::CantorPart( QWidget *parentWidget, QObject *parent, const QVariantList & args ): KParts::ReadWritePart(parent),
     m_searchBar(nullptr),
     m_initProgressDlg(nullptr),
     m_showProgressDlg(true),
     m_showBackendHelp(nullptr),
     m_statusBarBlocked(false),
     m_sessionStatusCounter(0)
 {
     m_panelHandler=new Cantor::PanelPluginHandler(this);
     connect(m_panelHandler, SIGNAL(pluginsChanged()), this, SLOT(pluginsChanged()));
 
     QString backendName;
     if(args.isEmpty())
         backendName=QLatin1String("null");
     else
         backendName=args.first().toString();
 
     for (const QVariant& arg : args)
     {
         if (arg.toString() == QLatin1String("--noprogress") )
         {
             qWarning()<<"not showing the progress bar by request";
             m_showProgressDlg=false;
         }
     }
 
     Cantor::Backend* b=Cantor::Backend::getBackend(backendName);
     if(!b)
     {
         KMessageBox::error(parentWidget, i18n("Backend %1 is not installed", backendName), i18n("Error - Cantor"));
         setWidget(new QWidget(parentWidget));
         return;
     }
 
     qDebug()<<"Backend "<<b->name()<<" offers extensions: "<<b->extensions();
 
 
     auto* collection = actionCollection();
 
     //central widget
     QWidget* widget = new QWidget(parentWidget);
     QVBoxLayout* layout = new QVBoxLayout(widget);
     m_worksheet=new Worksheet(b, widget);
     m_worksheetview=new WorksheetView(m_worksheet, widget);
     m_worksheetview->setEnabled(false); //disable input until the session has successfully logged in and emits the ready signal
     connect(m_worksheet, SIGNAL(modified()), this, SLOT(setModified()));
     connect(m_worksheet, SIGNAL(showHelp(QString)), this, SIGNAL(showHelp(QString)));
     connect(m_worksheet, SIGNAL(loaded()), this, SLOT(initialized()));
     connect(collection, SIGNAL(inserted(QAction*)), m_worksheet, SLOT(registerShortcut(QAction*)));
     layout->addWidget(m_worksheetview);
     setWidget(widget);
 
     //create WorksheetAccessInterface, used at the moment by LabPlot only to access Worksheet's API
     Cantor::WorksheetAccessInterface* iface = new WorksheetAccessInterfaceImpl(this, m_worksheet);
     Q_UNUSED(iface);
 
     //initialize actions
     m_worksheet->createActions(collection);
 
     KStandardAction::saveAs(this, SLOT(fileSaveAs()), collection);
     m_save = KStandardAction::save(this, SLOT(save()), collection);
     m_save->setPriority(QAction::LowPriority);
 
     QAction* savePlain = new QAction(i18n("Save Plain Text"), collection);
     collection->addAction(QLatin1String("file_save_plain"), savePlain);
     savePlain->setIcon(QIcon::fromTheme(QLatin1String("document-save")));
     connect(savePlain, SIGNAL(triggered()), this, SLOT(fileSavePlain()));
 
     QAction* undo = KStandardAction::undo(m_worksheet, SIGNAL(undo()), collection);
     undo->setPriority(QAction::LowPriority);
     connect(m_worksheet, SIGNAL(undoAvailable(bool)), undo, SLOT(setEnabled(bool)));
 
     QAction* redo = KStandardAction::redo(m_worksheet, SIGNAL(redo()), collection);
     redo->setPriority(QAction::LowPriority);
     connect(m_worksheet, SIGNAL(redoAvailable(bool)), redo, SLOT(setEnabled(bool)));
 
     QAction* cut = KStandardAction::cut(m_worksheet, SIGNAL(cut()), collection);
     cut->setPriority(QAction::LowPriority);
     connect(m_worksheet, SIGNAL(cutAvailable(bool)), cut, SLOT(setEnabled(bool)));
 
     QAction* copy = KStandardAction::copy(m_worksheet, SIGNAL(copy()), collection);
     copy->setPriority(QAction::LowPriority);
     connect(m_worksheet, SIGNAL(copyAvailable(bool)), copy, SLOT(setEnabled(bool)));
 
     QAction* paste = KStandardAction::paste(m_worksheet, SLOT(paste()), collection);
     paste->setPriority(QAction::LowPriority);
     connect(m_worksheet, SIGNAL(pasteAvailable(bool)), paste, SLOT(setEnabled(bool)));
 
     QAction* find = KStandardAction::find(this, SLOT(showSearchBar()), collection);
     find->setPriority(QAction::LowPriority);
 
     QAction* replace = KStandardAction::replace(this, SLOT(showExtendedSearchBar()), collection);
     replace->setPriority(QAction::LowPriority);
 
     m_findNext = KStandardAction::findNext(this, SLOT(findNext()), collection);
     m_findNext->setEnabled(false);
 
     m_findPrev = KStandardAction::findPrev(this, SLOT(findPrev()), collection);
     m_findPrev->setEnabled(false);
 
     QAction* latexExport = new QAction(i18n("Export to LaTeX"), collection);
     collection->addAction(QLatin1String("file_export_latex"), latexExport);
     latexExport->setIcon(QIcon::fromTheme(QLatin1String("document-export")));
     connect(latexExport, SIGNAL(triggered()), this, SLOT(exportToLatex()));
 
     QAction* print = KStandardAction::print(this, SLOT(print()), collection);
     print->setPriority(QAction::LowPriority);
 
     QAction* printPreview = KStandardAction::printPreview(this, SLOT(printPreview()), collection);
     printPreview->setPriority(QAction::LowPriority);
 
     KStandardAction::zoomIn(m_worksheetview, SLOT(zoomIn()), collection);
     KStandardAction::zoomOut(m_worksheetview, SLOT(zoomOut()), collection);
+    KStandardAction::actualSize(m_worksheetview, SLOT(actualSize()), collection);
 
     m_evaluate = new QAction(i18n("Evaluate Worksheet"), collection);
     collection->addAction(QLatin1String("evaluate_worksheet"), m_evaluate);
     m_evaluate->setIcon(QIcon::fromTheme(QLatin1String("system-run")));
     collection->setDefaultShortcut(m_evaluate, Qt::CTRL+Qt::Key_E);
     connect(m_evaluate, SIGNAL(triggered()), this, SLOT(evaluateOrInterrupt()));
 
     m_typeset = new KToggleAction(i18n("Typeset using LaTeX"), collection);
     m_typeset->setChecked(Settings::self()->typesetDefault());
     // Disable until login, because we use session command for this action
     m_typeset->setEnabled(false);
     collection->addAction(QLatin1String("enable_typesetting"), m_typeset);
     connect(m_typeset, SIGNAL(toggled(bool)), this, SLOT(enableTypesetting(bool)));
 
     m_highlight = new KToggleAction(i18n("Syntax Highlighting"), collection);
     m_highlight->setChecked(Settings::self()->highlightDefault());
     collection->addAction(QLatin1String("enable_highlighting"), m_highlight);
     connect(m_highlight, SIGNAL(toggled(bool)), m_worksheet, SLOT(enableHighlighting(bool)));
 
     m_completion = new KToggleAction(i18n("Completion"), collection);
     m_completion->setChecked(Settings::self()->completionDefault());
     collection->addAction(QLatin1String("enable_completion"), m_completion);
     connect(m_completion, SIGNAL(toggled(bool)), m_worksheet, SLOT(enableCompletion(bool)));
 
     m_exprNumbering = new KToggleAction(i18n("Line Numbers"), collection);
     m_exprNumbering->setChecked(Settings::self()->expressionNumberingDefault());
     collection->addAction(QLatin1String("enable_expression_numbers"), m_exprNumbering);
     connect(m_exprNumbering, SIGNAL(toggled(bool)), m_worksheet, SLOT(enableExpressionNumbering(bool)));
 
     m_animateWorksheet = new KToggleAction(i18n("Animate Worksheet"), collection);
     m_animateWorksheet->setChecked(Settings::self()->animationDefault());
     collection->addAction(QLatin1String("enable_animations"), m_animateWorksheet);
     connect(m_animateWorksheet, SIGNAL(toggled(bool)), m_worksheet, SLOT(enableAnimations(bool)));
 
     QAction* restart = new QAction(i18n("Restart Backend"), collection);
     collection->addAction(QLatin1String("restart_backend"), restart);
     restart->setIcon(QIcon::fromTheme(QLatin1String("system-reboot")));
     connect(restart, SIGNAL(triggered()), this, SLOT(restartBackend()));
 
     QAction* evaluateCurrent = new QAction(QIcon::fromTheme(QLatin1String("media-playback-start")), i18n("Evaluate Entry"), collection);
     collection->addAction(QLatin1String("evaluate_current"),  evaluateCurrent);
     collection->setDefaultShortcut(evaluateCurrent, Qt::SHIFT + Qt::Key_Return);
     connect(evaluateCurrent, SIGNAL(triggered()), m_worksheet, SLOT(evaluateCurrentEntry()));
 
     QAction* insertCommandEntry = new QAction(QIcon::fromTheme(QLatin1String("run-build")), i18n("Insert Command Entry"), collection);
     collection->addAction(QLatin1String("insert_command_entry"),  insertCommandEntry);
     collection->setDefaultShortcut(insertCommandEntry, Qt::CTRL + Qt::Key_Return);
     connect(insertCommandEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertCommandEntry()));
 
     QAction* insertTextEntry = new QAction(QIcon::fromTheme(QLatin1String("draw-text")), i18n("Insert Text Entry"), collection);
     collection->addAction(QLatin1String("insert_text_entry"),  insertTextEntry);
     connect(insertTextEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertTextEntry()));
 
 #ifdef Discount_FOUND
     QAction* insertMarkdownEntry = new QAction(QIcon::fromTheme(QLatin1String("text-x-markdown")), i18n("Insert Markdown Entry"), collection);
     collection->addAction(QLatin1String("insert_markdown_entry"),  insertMarkdownEntry);
     connect(insertMarkdownEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertMarkdownEntry()));
 #endif
 
 #ifdef WITH_EPS
     QAction* insertLatexEntry = new QAction(QIcon::fromTheme(QLatin1String("text-x-tex")), i18n("Insert Latex Entry"), collection);
     collection->addAction(QLatin1String("insert_latex_entry"),  insertLatexEntry);
     connect(insertLatexEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertLatexEntry()));
 #endif
 
     QAction* insertPageBreakEntry = new QAction(QIcon::fromTheme(QLatin1String("go-next-view-page")), i18n("Insert Page Break"), collection);
     collection->addAction(QLatin1String("insert_page_break_entry"), insertPageBreakEntry);
     connect(insertPageBreakEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertPageBreakEntry()));
 
     QAction* insertImageEntry = new QAction(QIcon::fromTheme(QLatin1String("image-x-generic")), i18n("Insert Image"), collection);
     collection->addAction(QLatin1String("insert_image_entry"), insertImageEntry);
     connect(insertImageEntry, SIGNAL(triggered()), m_worksheet, SLOT(insertImageEntry()));
 
     QAction* removeCurrent = new QAction(QIcon::fromTheme(QLatin1String("edit-delete")), i18n("Remove current Entry"), collection);
     collection->addAction(QLatin1String("remove_current"), removeCurrent);
     collection->setDefaultShortcut(removeCurrent, Qt::ShiftModifier + Qt::Key_Delete);
     connect(removeCurrent, SIGNAL(triggered()), m_worksheet, SLOT(removeCurrentEntry()));
 
     m_showBackendHelp = new QAction(i18n("Show %1 Help", b->name()) , collection);
     m_showBackendHelp->setIcon(QIcon::fromTheme(QLatin1String("help-contents")));
     collection->addAction(QLatin1String("backend_help"), m_showBackendHelp);
     connect(m_showBackendHelp, SIGNAL(triggered()), this, SLOT(showBackendHelp()));
 
     QAction* publishWorksheet = new QAction(i18n("Publish Worksheet"), collection);
     publishWorksheet->setIcon(QIcon::fromTheme(QLatin1String("get-hot-new-stuff")));
     collection->addAction(QLatin1String("file_publish_worksheet"), publishWorksheet);
     connect(publishWorksheet, SIGNAL(triggered()), this, SLOT(publishWorksheet()));
 
     KToggleAction* showEditor = new KToggleAction(i18n("Show Script Editor"), collection);
     showEditor->setChecked(false);
     collection->addAction(QLatin1String("show_editor"), showEditor);
     connect(showEditor, SIGNAL(toggled(bool)), this, SLOT(showScriptEditor(bool)));
     showEditor->setEnabled(b->extensions().contains(QLatin1String("ScriptExtension")));
 
     QAction* showCompletion = new QAction(i18n("Show Completion"), collection);
     collection->addAction(QLatin1String("show_completion"), showCompletion);
     QList<QKeySequence> showCompletionShortcuts;
     showCompletionShortcuts << Qt::Key_Tab << Qt::CTRL + Qt::Key_Space;
     collection->setDefaultShortcuts(showCompletion, showCompletionShortcuts);
     connect(showCompletion, SIGNAL(triggered()), m_worksheet, SLOT(showCompletion()));
 
     // set our XML-UI resource file
     setXMLFile(QLatin1String("cantor_part.rc"));
 
     // we are read-write by default
     setReadWrite(true);
 
     // we are not modified since we haven't done anything yet
     setModified(false);
 
     initialized();
 }
 
 CantorPart::~CantorPart()
 {
     if (m_scriptEditor)
     {
         disconnect(m_scriptEditor, SIGNAL(destroyed()), this, SLOT(scriptEditorClosed()));
         delete m_scriptEditor;
     }
     if (m_searchBar)
         delete m_searchBar;
 }
 
 void CantorPart::setReadWrite(bool rw)
 {
     // notify your internal widget of the read-write state
     m_worksheetview->setInteractive(rw);
 
     ReadWritePart::setReadWrite(rw);
 }
 
 void CantorPart::setModified(bool modified)
 {
     // get a handle on our Save action and make sure it is valid
     if (!m_save)
         return;
 
     // if so, we either enable or disable it based on the current state
     m_save->setEnabled(modified);
 
     // in any event, we want our parent to do it's thing
     ReadWritePart::setModified(modified);
 }
 
 KAboutData& CantorPart::createAboutData()
 {
     // the non-i18n name here must be the same as the directory in
     // which the part's rc file is installed ('partrcdir' in the Makefile)
     static KAboutData about(QLatin1String("cantorpart"),
                      QLatin1String("Cantor"),
                      QLatin1String(CANTOR_VERSION),
                      i18n("CantorPart"),
                      KAboutLicense::GPL,
                      i18n("(C) 2009-2015 Alexander Rieder"),
                      QString(),
                      QLatin1String("http://edu.kde.org/cantor"));
 
     about.addAuthor( i18n("Alexander Rieder"), QString(), QLatin1String("alexanderrieder@gmail.com") );
     return about;
 }
 
 bool CantorPart::openFile()
 {
     //don't crash if for some reason the worksheet is invalid
     if(m_worksheet==nullptr)
     {
         qWarning()<<"trying to open in an invalid cantor part";
         return false;
     }
 
     QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
     QElapsedTimer timer;
 	timer.start();
     const bool rc = m_worksheet->load(localFilePath());
     QApplication::restoreOverrideCursor();
 
     if (rc) {
         qDebug()<< "Worksheet successfully loaded in " <<  (float)timer.elapsed()/1000 << " seconds).";
         updateCaption();
         // We modified, but it we load file now, so no need in save option
         setModified(false);
     }
 
     return rc;
 }
 
 bool CantorPart::saveFile()
 {
     // if we aren't read-write, return immediately
     if (isReadWrite() == false)
         return false;
 
     qDebug()<<"saving to: "<<url();
     if (url().isEmpty())
         fileSaveAs();
     else
         m_worksheet->save( localFilePath() );
     setModified(false);
 
     return true;
 }
 
 void CantorPart::fileSaveAs()
 {
     // this slot is called whenever the File->Save As menu is selected
     QString worksheetFilter = i18n("Cantor Worksheet (*.cws)");
     QString filter = worksheetFilter;
 
     //if the backend supports scripts, also append their scriptFile endings to the filter
     Cantor::Backend * const backend=m_worksheet->session()->backend();
     if (backend->extensions().contains(QLatin1String("ScriptExtension")))
     {
         Cantor::ScriptExtension* e=dynamic_cast<Cantor::ScriptExtension*>(backend->extension(QLatin1String("ScriptExtension")));
         filter+=QLatin1String(";;")+e->scriptFileFilter();
     }
 
     QString selectedFilter;
     QString file_name = QFileDialog::getSaveFileName(widget(), i18n("Save as"), QString(), filter, &selectedFilter);
     if (file_name.isEmpty())
         return;
 
     //depending on user's selection, save as a worksheet or as a plain script file
     if (selectedFilter == worksheetFilter)
     {
         if (!file_name.endsWith(QLatin1String(".cws")))
             file_name += QLatin1String(".cws");
         saveAs(QUrl::fromLocalFile(file_name));
     }
     else
         m_worksheet->savePlain(file_name);
 
     updateCaption();
 }
 
 void CantorPart::fileSavePlain()
 {
     QString file_name = QFileDialog::getSaveFileName(widget(), i18n("Save"), QString(), QString());
     if (!file_name.isEmpty())
         m_worksheet->savePlain(file_name);
 }
 
 void CantorPart::exportToLatex()
 {
     QString file_name = QFileDialog::getSaveFileName(widget(), i18n("Export to LaTeX"), QString(), QString());
 
     if (file_name.isEmpty() == false)
         {
         if (!file_name.endsWith(QLatin1String(".tex")))
             file_name += QLatin1String(".tex");
         m_worksheet->saveLatex(file_name);
         }
 }
 
 void CantorPart::guiActivateEvent( KParts::GUIActivateEvent * event )
 {
     KParts::ReadWritePart::guiActivateEvent(event);
     if(event->activated())
     {
         if(m_scriptEditor)
             m_scriptEditor->show();
     }else
     {
         if(m_scriptEditor)
             m_scriptEditor->hide();
     }
 }
 
 void CantorPart::evaluateOrInterrupt()
 {
     qDebug()<<"evalorinterrupt";
     if(m_worksheet->isRunning())
         m_worksheet->interrupt();
     else
         m_worksheet->evaluate();
 }
 void CantorPart::restartBackend()
 {
     bool restart = false;
     if (Settings::self()->warnAboutSessionRestart())
     {
         KMessageBox::ButtonCode tmp;
 
         // If we want the question box, but it is disable, then enable it
         if (!KMessageBox::shouldBeShownYesNo(QLatin1String("WarnAboutSessionRestart"), tmp))
             KMessageBox::enableMessage(QLatin1String("WarnAboutSessionRestart"));
 
         const QString& name = m_worksheet->session()->backend()->name();
         KMessageBox::ButtonCode rc = KMessageBox::questionYesNo(widget(),
             i18n("All the available calculation results will be lost. Do you really want to restart %1?", name),
             i18n("Restart %1?", name),
             KStandardGuiItem::yes(),
             KStandardGuiItem::no(),
             QLatin1String("WarnAboutSessionRestart")
         );
 
         // Update setting's value
         Settings::self()->setWarnAboutSessionRestart(
             KMessageBox::shouldBeShownYesNo(QLatin1String("WarnAboutSessionRestart"), tmp));
 
         restart = rc == KMessageBox::ButtonCode::Yes;
     }
     else
     {
         KMessageBox::ButtonCode rc;
         KMessageBox::shouldBeShownYesNo(QLatin1String("WarnAboutSessionRestart"), rc);
         restart = rc == KMessageBox::ButtonCode::Yes;
     }
 
     if (restart)
     {
         m_worksheet->session()->logout();
         m_worksheet->session()->login();
     }
 }
 
 void CantorPart::worksheetStatusChanged(Cantor::Session::Status status)
 {
     qDebug()<<"wsStatusChange"<<status;
     unsigned int count = ++m_sessionStatusCounter;
     if(status==Cantor::Session::Running)
     {
         // Useless add a interrupt action without delay, because user physically can't interrupt fast commands
         QTimer::singleShot(100, this, [this, count] () {
             if(m_worksheet->session()->status() == Cantor::Session::Running && m_sessionStatusCounter == count)
             {
                 m_evaluate->setText(i18n("Interrupt"));
                 m_evaluate->setShortcut(Qt::CTRL+Qt::Key_I);
                 m_evaluate->setIcon(QIcon::fromTheme(QLatin1String("dialog-close")));
                 setStatusMessage(i18n("Calculating..."));
             }
         });
     }else if (status==Cantor::Session::Done)
     {
         m_evaluate->setText(i18n("Evaluate Worksheet"));
         m_evaluate->setShortcut(Qt::CTRL+Qt::Key_E);
         m_evaluate->setIcon(QIcon::fromTheme(QLatin1String("system-run")));
 
         setStatusMessage(i18n("Ready"));
     }
 }
 
 void CantorPart::showSessionError(const QString& message)
 {
     qDebug()<<"Error: "<<message;
     initialized();
     showImportantStatusMessage(i18n("Session Error: %1", message));
 }
 
 void CantorPart::initialized()
 {
     connect(m_worksheet->session(), SIGNAL(statusChanged(Cantor::Session::Status)), this, SLOT(worksheetStatusChanged(Cantor::Session::Status)));
     connect(m_worksheet->session(), SIGNAL(loginStarted()),this, SLOT(worksheetSessionLoginStarted()));
     connect(m_worksheet->session(), SIGNAL(loginDone()),this, SLOT(worksheetSessionLoginDone()));
     connect(m_worksheet->session(), SIGNAL(error(QString)), this, SLOT(showSessionError(QString)));
 
     loadAssistants();
     m_panelHandler->setSession(m_worksheet->session());
     adjustGuiToSession();
 
     if (m_worksheet->isEmpty())
         m_worksheet->appendCommandEntry();
 
     m_worksheetview->setEnabled(true);
     m_worksheetview->setFocus();
 
     setStatusMessage(i18n("Initialization complete"));
     updateCaption();
 }
 
 void CantorPart::worksheetSessionLoginStarted() {
     setStatusMessage(i18n("Initializing..."));
     QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 }
 
 void CantorPart::worksheetSessionLoginDone() {
     setStatusMessage(i18n("Ready"));
 
     m_typeset->setEnabled(true);
 
     QApplication::restoreOverrideCursor();
 }
 
 void CantorPart::enableTypesetting(bool enable)
 {
     m_worksheet->session()->setTypesettingEnabled(enable);
 }
 
 void CantorPart::showBackendHelp()
 {
     qDebug()<<"showing backends help";
     Cantor::Backend* backend=m_worksheet->session()->backend();
     QUrl url = backend->helpUrl();
     qDebug()<<"launching url "<<url;
     new KRun(url, widget());
 }
 
 Worksheet* CantorPart::worksheet()
 {
     return m_worksheet;
 }
 
 void CantorPart::updateCaption()
 {
     QString filename=url().fileName();
     //strip away the extension
     filename=filename.left(filename.lastIndexOf(QLatin1Char('.')));
 
     if (filename.isEmpty())
         filename=i18n("Unnamed");
 
     emit setCaption(filename, QIcon::fromTheme(m_worksheet->session()->backend()->icon()));
 }
 
 void CantorPart::pluginsChanged()
 {
     for (auto* plugin : m_panelHandler->plugins())
         connect(plugin, SIGNAL(requestRunCommand(QString)), this, SLOT(runCommand(QString)));
 }
 
 void CantorPart::loadAssistants()
 {
     qDebug()<<"loading assistants...";
 
     QStringList assistantDirs;
     for (const QString& dir : QCoreApplication::libraryPaths())
         assistantDirs << dir + QDir::separator() + QLatin1String("cantor/assistants");
 
     QPluginLoader loader;
     for (const QString& dir : assistantDirs) {
 
         qDebug() << "dir: " << dir;
         QStringList assistants;
         QDir assistantDir = QDir(dir);
 
         assistants = assistantDir.entryList();
 
         for (const QString& assistant : assistants) {
             if (assistant==QLatin1String(".") || assistant==QLatin1String(".."))
                 continue;
 
             loader.setFileName(dir + QDir::separator() + assistant);
 
             if (!loader.load()){
                 qDebug() << "Error while loading assistant: " << assistant;
                 continue;
             }
 
             KPluginFactory* factory = KPluginLoader(loader.fileName()).factory();
             Cantor::Assistant* plugin = factory->create<Cantor::Assistant>(this);
 
             Cantor::Backend* backend=worksheet()->session()->backend();
 
             KPluginMetaData info(loader);
             plugin->setPluginInfo(info);
             plugin->setBackend(backend);
 
             bool supported=true;
             for (const QString& req : plugin->requiredExtensions())
                 supported=supported && backend->extensions().contains(req);
 
             if(supported)
             {
                 qDebug() << "plugin " << info.name() << " is supported by " << backend->name() << ", requires extensions " << plugin->requiredExtensions();
                 plugin->initActions();
                 connect(plugin, SIGNAL(requested()), this, SLOT(runAssistant()));
             }else
             {
                 qDebug() << "plugin " << info.name() << " is not supported by "<<backend->name();
                 removeChildClient(plugin);
                 plugin->deleteLater();
             }
         }
     }
 }
 
 void CantorPart::runAssistant()
 {
     Cantor::Assistant* a=qobject_cast<Cantor::Assistant*>(sender());
     QStringList cmds=a->run(widget());
     qDebug()<<cmds;
     if(!cmds.isEmpty())
         runCommand(cmds.join(QLatin1String("\n")));
 }
 
 void CantorPart::runCommand(const QString& cmd)
 {
     m_worksheet->appendCommandEntry(cmd);
 }
 
 void CantorPart::showSearchBar()
 {
     if (!m_searchBar) {
         m_searchBar = new SearchBar(widget(), m_worksheet);
         widget()->layout()->addWidget(m_searchBar);
         connect(m_searchBar, SIGNAL(destroyed(QObject*)),
                 this, SLOT(searchBarDeleted()));
     }
 
     m_findNext->setEnabled(true);
     m_findPrev->setEnabled(true);
 
     m_searchBar->showStandard();
     m_searchBar->setFocus();
 }
 
 void CantorPart::showExtendedSearchBar()
 {
     if (!m_searchBar) {
         m_searchBar = new SearchBar(widget(), m_worksheet);
         widget()->layout()->addWidget(m_searchBar);
         connect(m_searchBar, SIGNAL(destroyed(QObject*)),
                 this, SLOT(searchBarDeleted()));
     }
 
     m_findNext->setEnabled(true);
     m_findPrev->setEnabled(true);
 
     m_searchBar->showExtended();
     m_searchBar->setFocus();
 }
 
 void CantorPart::findNext()
 {
     if (m_searchBar)
         m_searchBar->next();
 }
 
 void CantorPart::findPrev()
 {
     if (m_searchBar)
         m_searchBar->prev();
 }
 
 void CantorPart::searchBarDeleted()
 {
     m_searchBar = nullptr;
     m_findNext->setEnabled(false);
     m_findPrev->setEnabled(false);
 }
 
 void CantorPart::adjustGuiToSession()
 {
     Cantor::Backend::Capabilities capabilities = m_worksheet->session()->backend()->capabilities();
 #ifdef WITH_EPS
     m_typeset->setVisible(capabilities.testFlag(Cantor::Backend::LaTexOutput));
 #else
     m_typeset->setVisible(false);
 #endif
     m_completion->setVisible(capabilities.testFlag(Cantor::Backend::Completion));
 
     //this is 0 on the first call
     if(m_showBackendHelp)
         m_showBackendHelp->setText(i18n("Show %1 Help", m_worksheet->session()->backend()->name()));
 }
 
 void CantorPart::publishWorksheet()
 {
     int ret = KMessageBox::questionYesNo(widget(),
                                          i18n("Do you want to upload current Worksheet to public web server?"),
                                          i18n("Question - Cantor"));
     if (ret != KMessageBox::Yes) return;
 
     if (isModified()||url().isEmpty())
     {
         ret = KMessageBox::warningContinueCancel(widget(),
                                                  i18n("The Worksheet is not saved. You should save it before uploading."),
                                                  i18n("Warning - Cantor"),  KStandardGuiItem::save(),  KStandardGuiItem::cancel());
         if (ret != KMessageBox::Continue) return;
         if (!saveFile()) return;
     }
 
     qDebug()<<"uploading file "<<url();
 
     // upload
     //HACK: use different .knsrc files for each category
     //remove this once KNS3 gains the ability to select category
     KNS3::UploadDialog dialog(QString::fromLatin1("cantor_%1.knsrc").arg(m_worksheet->session()->backend()->id().toLower()), widget());
     dialog.setUploadFile(url());
     dialog.exec();
 }
 
 void CantorPart::print()
 {
     QPrinter printer;
     QPointer<QPrintDialog> dialog = new QPrintDialog(&printer,  widget());
 
     // TODO: Re-enable print selection
     //if (m_worksheet->textCursor().hasSelection())
     //    dialog->addEnabledOption(QAbstractPrintDialog::PrintSelection);
 
     if (dialog->exec() == QDialog::Accepted)
         m_worksheet->print(&printer);
 
     delete dialog;
 }
 
 void CantorPart::printPreview()
 {
     QPrintPreviewDialog *dialog = new QPrintPreviewDialog(widget());
     connect(dialog, SIGNAL(paintRequested(QPrinter*)), m_worksheet, SLOT(print(QPrinter*)));
     dialog->exec();
 }
 
 void CantorPart::showScriptEditor(bool show)
 {
     if(show)
     {
         if (m_scriptEditor)
         {
             return;
         }
         Cantor::ScriptExtension* scriptE=dynamic_cast<Cantor::ScriptExtension*>(m_worksheet->session()->backend()->extension(QLatin1String("ScriptExtension")));
         if (!scriptE)
         {
             return;
         }
         m_scriptEditor=new ScriptEditorWidget(scriptE->scriptFileFilter(), scriptE->highlightingMode(), widget()->window());
         connect(m_scriptEditor, SIGNAL(runScript(QString)), this, SLOT(runScript(QString)));
         connect(m_scriptEditor, SIGNAL(destroyed()), this, SLOT(scriptEditorClosed()));
         m_scriptEditor->show();
     }else
     {
         m_scriptEditor->deleteLater();
     }
 }
 
 void CantorPart::scriptEditorClosed()
 {
     QAction* showEditor = actionCollection()->action(QLatin1String("show_editor"));
     if (showEditor)
     {
         showEditor->setChecked(false);
     }
 }
 
 void CantorPart::runScript(const QString& file)
 {
     Cantor::Backend* backend=m_worksheet->session()->backend();
     if(!backend->extensions().contains(QLatin1String("ScriptExtension")))
     {
         KMessageBox::error(widget(), i18n("This backend does not support scripts."), i18n("Error - Cantor"));
         return;
     }
 
     Cantor::ScriptExtension* scriptE=dynamic_cast<Cantor::ScriptExtension*>(backend->extension(QLatin1String("ScriptExtension")));
     m_worksheet->appendCommandEntry(scriptE->runExternalScript(file));
 }
 
 void CantorPart::blockStatusBar()
 {
     m_statusBarBlocked=true;
 }
 
 void CantorPart::unblockStatusBar()
 {
     m_statusBarBlocked=false;
     if(!m_cachedStatusMessage.isNull())
         setStatusMessage(m_cachedStatusMessage);
     m_cachedStatusMessage.clear();
 }
 
 void CantorPart::setStatusMessage(const QString& message)
 {
     if(!m_statusBarBlocked)
         emit setStatusBarText(message);
     else
         m_cachedStatusMessage=message;
 }
 
 void CantorPart::showImportantStatusMessage(const QString& message)
 {
     setStatusMessage(message);
     blockStatusBar();
     QTimer::singleShot(3000, this, SLOT(unblockStatusBar()));
 }
 
 K_PLUGIN_FACTORY_WITH_JSON(CantorPartFactory, "cantor_part.json", registerPlugin<CantorPart>();)
 #include "cantor_part.moc"
diff --git a/src/cantor_part.rc b/src/cantor_part.rc
index 042e2293..62127c65 100644
--- a/src/cantor_part.rc
+++ b/src/cantor_part.rc
@@ -1,90 +1,91 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
 <kpartgui name="cantor_part" version="3">
 <MenuBar>
   <Menu name="file">
     <Action name="file_save"/>
     <Action name="file_save_as"/>
     <Action name="file_save_plain"/>
     <Action name="file_export_latex"/>
     <Action name="file_publish_worksheet"/>
     <Separator/>
     <Action name="file_print"/>
     <Action name="file_print_preview"/>
   </Menu>
   <Menu name="edit"><text>&amp;Edit</text>
     <Action name="edit_undo"/>
     <Action name="edit_redo"/>
     <Separator/>
     <Action name="edit_cut"/>
     <Action name="edit_copy"/>
     <Action name="edit_paste"/>
     <Separator/>
     <Action name="edit_find"/>
     <Action name="edit_replace"/>
     <Action name="edit_find_next"/>
     <Action name="edit_find_prev"/>
   </Menu>
   <Menu name="view"><text>&amp;View</text>
     <Action name="view_zoom_in"/>
     <Action name="view_zoom_out"/>
+    <Action name="view_actual_size"/>
     <Action name="show_editor"/>
   </Menu>
   <Menu name="worksheet"><text>&amp;Worksheet</text>
     <Action name="evaluate_worksheet"/>
     <Action name="evaluate_current"/>
     <Separator/>
     <Action name="insert_command_entry"/>
     <Action name="insert_text_entry"/>
     <Action name="insert_markdown_entry"/>
     <Action name="insert_latex_entry"/>
     <Action name="insert_image"/>
     <Action name="insert_page_break_entry"/>
     <Separator/>
     <Action name="remove_current"/>
   </Menu>
   <Menu name="settings">
     <Action name="enable_typesetting"/>
     <Action name="enable_highlighting"/>
     <Action name="enable_completion"/>
     <Action name="enable_expression_numbers"/>
     <Action name="enable_animations"/>
   </Menu>
   <Menu name="help">
     <Action name="backend_help"/>
   </Menu>
   <Merge/>
 </MenuBar>
 <ToolBar name="mainToolBar">
   <Action name="file_new"/>
   <Action name="file_open"/>
   <Action name="file_save"/>
   <Action name="file_print"/>
   <Action name="file_print_preview"/>
   <Action name="edit_find"/>
   <Action name="evaluate_worksheet"/>
   <Action name="restart_backend"/>
   <Action name="backend_help"/>
   <Separator/>
 </ToolBar>
 <ToolBar noMerge="1" name="textEditToolBar">
   <Separator/>
   <Action name="format_text_bold"/>
   <Action name="format_text_italic"/>
   <Action name="format_text_underline"/>
   <Action name="format_text_strikeout"/>
   <Action name="format_text_foreground_color"/>
   <Action name="format_text_background_color"/>
   <Separator/>
   <Action name="format_font_family"/>
   <Action name="format_font_size"/>
   <Separator/>
   <Action name="format_align_left"/>
   <Action name="format_align_center"/>
   <Action name="format_align_right"/>
   <Action name="format_align_justify"/>
   <Action name="format_list_style"/>
   <Action name="format_list_indent_more"/>
   <Action name="format_list_indent_less"/>
   <Separator/>
 </ToolBar>
 </kpartgui>
diff --git a/src/worksheetview.cpp b/src/worksheetview.cpp
index be1f6205..0d50527b 100644
--- a/src/worksheetview.cpp
+++ b/src/worksheetview.cpp
@@ -1,278 +1,285 @@
 /*
     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.
 
     ---
     Copyright (C) 2012 Martin Kuettler <martin.kuettler@gmail.com>
  */
 
 #include "worksheetview.h"
 #include "worksheet.h"
 
 #include <QParallelAnimationGroup>
 #include <QPropertyAnimation>
 #include <QScrollBar>
 
 WorksheetView::WorksheetView(Worksheet* scene, QWidget* parent) : QGraphicsView(scene, parent),
     m_scale(1),
     m_animation(nullptr),
     m_hAnimation(nullptr),
     m_vAnimation(nullptr),
     m_worksheet(scene)
 {
     connect(scene, SIGNAL(sceneRectChanged(QRectF)),
             this, SLOT(sceneRectChanged(QRectF)));
     setAlignment(Qt::AlignLeft | Qt::AlignTop);
     //setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
 }
 
 void WorksheetView::makeVisible(const QRectF& sceneRect)
 {
     const qreal w = viewport()->width();
     const qreal h = viewport()->height();
 
     QRectF rect(m_scale*sceneRect.topLeft(), m_scale*sceneRect.size());
 
     qreal x,y;
     if (m_animation) {
         x = m_hAnimation->endValue().toReal();
         y = m_vAnimation->endValue().toReal();
 
         if (QRectF(x,y,w,h).contains(rect))
             return;
     }
 
     if (horizontalScrollBar())
         x = horizontalScrollBar()->value();
     else
         x = 0;
     if (verticalScrollBar())
         y = verticalScrollBar()->value();
     else
         y = 0;
 
     if (!m_animation && QRectF(x,y,w,h).contains(rect))
         return;
 
     qreal nx, ny;
     if (y > rect.y() || rect.height() > h)
         ny = rect.y();
     else
         ny = rect.y() + rect.height() - h;
     if (rect.x() + rect.width() <= w || x > rect.x())
         nx = 0;
     else
         nx = rect.x() + rect.width() - w;
 
     if (!m_worksheet->animationsEnabled()) {
         if (horizontalScrollBar())
             horizontalScrollBar()->setValue(nx);
         if (verticalScrollBar())
             verticalScrollBar()->setValue(ny);
         return;
     }
 
     if (!m_animation)
         m_animation = new QParallelAnimationGroup(this);
 
     if (horizontalScrollBar()) {
         if (!m_hAnimation) {
             m_hAnimation = new QPropertyAnimation(horizontalScrollBar(),
                                                   "value", this);
             m_hAnimation->setStartValue(horizontalScrollBar()->value());
             nx = qBound(qreal(0.0), nx, qreal(0.0+horizontalScrollBar()->maximum()));
             m_hAnimation->setEndValue(nx);
             m_hAnimation->setDuration(100);
             m_animation->addAnimation(m_hAnimation);
         } else {
             qreal progress = static_cast<qreal>(m_hAnimation->currentTime()) /
                 m_hAnimation->totalDuration();
             QEasingCurve curve = m_hAnimation->easingCurve();
             qreal value = curve.valueForProgress(progress);
             qreal sx = 1/(1-value)*(m_hAnimation->currentValue().toReal() -
                                     value * nx);
             m_hAnimation->setStartValue(sx);
             m_hAnimation->setEndValue(nx);
         }
     } else {
         m_hAnimation = nullptr;
     }
 
     if (verticalScrollBar()) {
         if (!m_vAnimation) {
             m_vAnimation = new QPropertyAnimation(verticalScrollBar(),
                                                   "value", this);
             m_vAnimation->setStartValue(verticalScrollBar()->value());
             ny = qBound(qreal(0.0), ny, qreal(0.0+verticalScrollBar()->maximum()));
             m_vAnimation->setEndValue(ny);
             m_vAnimation->setDuration(100);
             m_animation->addAnimation(m_vAnimation);
         } else {
             qreal progress = static_cast<qreal>(m_vAnimation->currentTime()) /
                 m_vAnimation->totalDuration();
             QEasingCurve curve = m_vAnimation->easingCurve();
             qreal value = curve.valueForProgress(progress);
             qreal sy = 1/(1-value)*(m_vAnimation->currentValue().toReal() -
                                     value * ny);
             m_vAnimation->setStartValue(sy);
             m_vAnimation->setEndValue(ny);
         }
     } else {
         m_vAnimation = nullptr;
     }
 
     connect(m_animation, &QParallelAnimationGroup::finished, this, &WorksheetView::endAnimation);
     m_animation->start();
 }
 
 bool WorksheetView::isVisible(const QRectF& sceneRect) const
 {
     const qreal w = viewport()->width();
     const qreal h = viewport()->height();
 
     QRectF rect(m_scale*sceneRect.topLeft(), m_scale*sceneRect.size());
 
     qreal x,y;
     if (m_animation) {
         x = m_hAnimation->endValue().toReal();
         y = m_vAnimation->endValue().toReal();
     } else {
         if (horizontalScrollBar())
             x = horizontalScrollBar()->value();
         else
             x = 0;
         if (verticalScrollBar())
             y = verticalScrollBar()->value();
         else
             y = 0;
     }
 
     return QRectF(x,y,w,h).contains(rect);
 }
 
 bool WorksheetView::isAtEnd() const
 {
     bool atEnd = true;
     if (verticalScrollBar())
         atEnd &= (verticalScrollBar()->value()==verticalScrollBar()->maximum());
     return atEnd;
 }
 
 void WorksheetView::scrollToEnd() const
 {
     if (verticalScrollBar())
         verticalScrollBar()->setValue(verticalScrollBar()->maximum());
 }
 
 void WorksheetView::scrollBy(int dy)
 {
     if (!verticalScrollBar())
         return;
 
     int ny = verticalScrollBar()->value() + dy;
     if (ny < 0)
         ny = 0;
     else if (ny > verticalScrollBar()->maximum())
         ny = verticalScrollBar()->maximum();
 
     int x;
     if (horizontalScrollBar())
         x = horizontalScrollBar()->value();
     else
         x = 0;
 
     const qreal w = viewport()->width() / m_scale;
     const qreal h = viewport()->height() / m_scale;
     makeVisible(QRectF(x, ny, w, h));
 }
 
 void WorksheetView::endAnimation()
 {
     if (!m_animation)
         return;
 
     m_animation->deleteLater();
     m_hAnimation = nullptr;
     m_vAnimation = nullptr;
     m_animation = nullptr;
 }
 
 QPoint WorksheetView::viewCursorPos() const
 {
     return viewport()->mapFromGlobal(QCursor::pos());
 }
 
 QPointF WorksheetView::sceneCursorPos() const
 {
     return mapToScene(viewCursorPos());
 }
 
 QRectF WorksheetView::viewRect() const
 {
     const qreal w = viewport()->width() / m_scale;
     const qreal h = viewport()->height() / m_scale;
     qreal y = verticalScrollBar()->value();
     qreal x = horizontalScrollBar() ? horizontalScrollBar()->value() : 0;
     return QRectF(x, y, w, h);
 }
 
 void WorksheetView::resizeEvent(QResizeEvent* event)
 {
     QGraphicsView::resizeEvent(event);
     updateSceneSize();
 }
 
 qreal WorksheetView::scaleFactor() const
 {
     return m_scale;
 }
 
 void WorksheetView::updateSceneSize()
 {
     QSize s = viewport()->size();
     m_worksheet->setViewSize(s.width()/m_scale, s.height()/m_scale, m_scale);
     sendViewRectChange();
 }
 
 void WorksheetView::sceneRectChanged(const QRectF& sceneRect) const
 {
     Q_UNUSED(sceneRect);
     if (verticalScrollBar())
         connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
                 this, SLOT(sendViewRectChange()), Qt::UniqueConnection);
     if (horizontalScrollBar())
         connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
                 this, SLOT(sendViewRectChange()), Qt::UniqueConnection);
 }
 
 void WorksheetView::sendViewRectChange() const
 {
     emit viewRectChanged(viewRect());
 }
 
 void WorksheetView::zoomIn()
 {
     m_scale *= 1.1;
     scale(1.1, 1.1);
     updateSceneSize();
 }
 
 void WorksheetView::zoomOut()
 {
     m_scale /= 1.1;
     scale(1/1.1, 1/1.1);
     updateSceneSize();
 }
+
+void WorksheetView::actualSize()
+{
+    scale (1/m_scale, 1/m_scale);
+    m_scale = 1.0;
+    updateSceneSize();
+}
diff --git a/src/worksheetview.h b/src/worksheetview.h
index 677a361e..160a7507 100644
--- a/src/worksheetview.h
+++ b/src/worksheetview.h
@@ -1,69 +1,70 @@
 /*
     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.
 
     ---
     Copyright (C) 2012 Martin Kuettler <martin.kuettler@gmail.com>
  */
 
 #ifndef WORKSHEETVIEW_H
 #define WORKSHEETVIEW_H
 
 #include <QGraphicsView>
 
 class QParallelAnimationGroup;
 class QPropertyAnimation;
 
 class Worksheet;
 
 class WorksheetView : public QGraphicsView
 {
   Q_OBJECT
 public:
     WorksheetView(Worksheet* scene, QWidget* parent);
 
     void makeVisible(const QRectF& sceneRect);
     bool isVisible(const QRectF& sceneRect) const;
     bool isAtEnd() const;
     void scrollToEnd() const;
     void scrollBy(int dy);
 
     QPoint viewCursorPos() const;
     QPointF sceneCursorPos() const;
     QRectF viewRect() const;
     qreal scaleFactor() const;
     void updateSceneSize();
 
 Q_SIGNALS:
     void viewRectChanged(QRectF rect) const;
 
 public Q_SLOTS:
     void zoomIn();
     void zoomOut();
+    void actualSize();
     void endAnimation();
     void sceneRectChanged(const QRectF& sceneRect) const;
     void sendViewRectChange() const;
 
 private:
     void resizeEvent(QResizeEvent*) override;
 
     qreal m_scale;
     QParallelAnimationGroup* m_animation;
     QPropertyAnimation* m_hAnimation;
     QPropertyAnimation* m_vAnimation;
     Worksheet* m_worksheet;
 };
 
 #endif //WORKSHEETVIEW_H