Signature plugin: invisible digital signature

Pdf4QtLib/sources/pdfdocumentbuilder.h

@@ -1235,6 +1235,13 @@ public:
                                                 PDFObjectReference signatureValue);
 
 
+    /// 
+    /// \param formField Form field reference
+    /// \param page Page reference
+    void createInvisibleFormFieldWidget(PDFObjectReference formField,
+                                        PDFObjectReference page);
+
+
     /// Creates signature dictionary used for preparation in signing process. Can define parameters of the 
     /// signature.
     /// \param filter Filter (for example, Adobe.PPKLite, Entrust.PPKEF, CiCi.SignIt, ...)
@@ -1450,11 +1457,6 @@ public:
                            PDFObject value);
 
 
-    /// Set document language.
-    /// \param locale Locale, from which is language determined
-    void setLanguage(QLocale locale);
-
-
     /// Set document language.
     /// \param language Document language. It should be a language identifier, as defined in ISO 639 
     ///        and ISO 3166. For example, "en-US", where first two letter means language code (en = 
@@ -1462,6 +1464,11 @@ public:
     void setLanguage(QString language);
 
 
+    /// Set document language.
+    /// \param locale Locale, from which is language determined
+    void setLanguage(QLocale locale);
+
+
     /// Set document outline.
     /// \param outline Document outline root
     void setOutline(PDFObjectReference outline);
@@ -1527,6 +1534,20 @@ public:
                          PDFReal unit);
 
 
+    /// Sets signature contact info field.
+    /// \param signatureDictionary Signature dictionary reference
+    /// \param contactInfoText Contact info text
+    void setSignatureContactInfo(PDFObjectReference signatureDictionary,
+                                 QString contactInfoText);
+
+
+    /// Sets signature reason field.
+    /// \param signatureDictionary Signature dictionary reference
+    /// \param reasonText Reason text
+    void setSignatureReason(PDFObjectReference signatureDictionary,
+                            QString reasonText);
+
+
     /// This function is used to update trailer dictionary. Must be called each time the final document is 
     /// being built.
     /// \param objectCount Number of objects (including empty ones)