Stub some iface for signing the document

core/document.cpp

@@ -2701,6 +2701,12 @@ bool Document::canConfigurePrinter() const
         return false;
 }
 
+void Document::sign()
+{
+    if (d->m_generator->canSign())
+        d->m_generator->sign();
+}
+
 DocumentInfo Document::documentInfo() const
 {
     QSet<DocumentInfo::Key> keys;

core/document.h

@@ -1052,6 +1052,8 @@ public Q_SLOTS:
      */
     void reloadDocument() const;
 
+    void sign();
+
     /**
      * Returns the part of document covered by the given signature @p info.
      *

core/generator.h

@@ -307,6 +307,10 @@ public:
      */
     virtual bool canGeneratePixmap() const;
 
+    virtual bool canSign() const { return false; }
+
+    virtual void sign() { return; }
+
     /**
      * This method can be called to trigger the generation of
      * a new pixmap as described by @p request.

generators/poppler/generator_pdf.h

@@ -100,6 +100,9 @@ public:
     bool save(const QString &fileName, SaveOptions options, QString *errorText) override;
     Okular::AnnotationProxy *annotationProxy() const override;
 
+    bool canSign() const override {return true;}
+    void sign() override { return; }
+
 protected:
     SwapBackingFileResult swapBackingFile(QString const &newFileName, QVector<Okular::Page *> &newPagesVector) override;
     bool doCloseDocument() override;

part/pageviewannotator.cpp

@@ -921,6 +921,9 @@ QRect PageViewAnnotator::performRouteMouseOrTabletEvent(const AnnotatorEngine::E
             annotation->setAuthor(Okular::Settings::identityAuthor());
             m_document->addPageAnnotation(m_lockedItem->pageNumber(), annotation);
 
+            if (signatureMode())
+                m_document->sign();
+
             if (annotation->openDialogAfterCreation())
                 m_pageView->openAnnotationWindow(annotation, m_lockedItem->pageNumber());
         }