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diff --git a/kpdf/core/generator_pdf/generator_pdf.h b/kpdf/core/generator_pdf/generator_pdf.h
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+/***************************************************************************
+ *   Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es>            *
+ *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
+ *                                                                         *
+ *   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.                                   *
+ ***************************************************************************/
+
+#ifndef _KPDF_GENERATOR_PDF_H_
+#define _KPDF_GENERATOR_PDF_H_
+
+#include <qmutex.h>
+#include <qcolor.h>
+#include <qstring.h>
+#include <qthread.h>
+#include "core/generator.h"
+#include "core/document.h"
+#include "core/link.h"
+
+class Dict;
+class GfxFont;
+class LinkDest;
+class Ref;
+class PDFDoc;
+class GList;
+class TextPage;
+
+class ObjectRect;
+class KPDFOutputDev;
+class PDFPixmapGeneratorThread;
+
+/**
+ * @short A generator that builds contents from a PDF document.
+ *
+ * All Generator features are supported and implented by this one.
+ * Internally this holds a reference to xpdf's core objects and provides
+ * contents generation using the PDFDoc object and a couple of OutputDevices
+ * called KPDFOutputDev and KPDFTextDev (both defined in gp_outputdev.h).
+ *
+ * For generating page contents we tell PDFDoc to render a page and grab
+ * contents from out OutputDevs when rendering finishes.
+ *
+ * Background asyncronous contents providing is done via a QThread inherited
+ * class defined at the bottom of the file.
+ */
+class PDFGenerator : public Generator
+{
+    public:
+        PDFGenerator( KPDFDocument * document );
+        virtual ~PDFGenerator();
+
+        // [INHERITED] load a document and fill up the pagesVector
+        bool loadDocument( const QString & fileName, QValueVector<KPDFPage*> & pagesVector );
+
+        // [INHERITED] document informations
+        const DocumentInfo * generateDocumentInfo();
+        const DocumentSynopsis * generateDocumentSynopsis();
+
+        // [INHERITED] document informations
+        bool isAllowed( int permissions );
+
+        // [INHERITED] perform actions on document / pages
+        bool canGeneratePixmap();
+        void generatePixmap( PixmapRequest * request );
+        void generateSyncTextPage( KPDFPage * page );
+
+        // [INHERITED] capability querying
+        bool supportsSearching() const;
+        bool hasFonts() const;
+
+        // [INHERITED] font related
+        void putFontInfo(KListView *list);
+
+        // [INHERITED] print page using an already configured kprinter
+        bool print( KPrinter& printer );
+
+        // [INHERITED] reply to some metadata requests
+        QString getMetaData( const QString & key, const QString & option );
+
+        // [INHERITED] reparse configuration
+        bool reparseConfig();
+
+    private:
+        // friend class to access private document related variables
+        friend class PDFPixmapGeneratorThread;
+
+        void scanFonts(Dict *resDict, KListView *list, Ref **fonts, int &fontsLen, int &fontsSize, QValueVector<Ref> *visitedXObjects);
+        void scanFont(GfxFont *font, KListView *list, Ref **fonts, int &fontsLen, int &fontsSize);
+
+        void fillViewportFromLink( DocumentViewport &viewport, LinkDest *destination );
+
+        // private functions for accessing document informations via PDFDoc
+        QString getDocumentInfo( const QString & data, bool canReturnNull = false ) const;
+        QString getDocumentDate( const QString & data ) const;
+        // private function for creating the document synopsis hieracy
+        void addSynopsisChildren( QDomNode * parent, GList * items );
+        // private function for creating the transition information
+        void addTransition( int pageNumber, KPDFPage * page );
+        // (async related) receive data from the generator thread
+        void customEvent( QCustomEvent * );
+
+        // xpdf dependant stuff
+        QMutex docLock;
+        PDFDoc * pdfdoc;
+        KPDFOutputDev * kpdfOutputDev;
+        QColor paperColor;
+
+        // asyncronous generation related stuff
+        PDFPixmapGeneratorThread * generatorThread;
+
+        // misc variables for document info and synopsis caching
+        bool ready;
+        PixmapRequest * pixmapRequest;
+        bool docInfoDirty;
+        DocumentInfo docInfo;
+        bool docSynopsisDirty;
+        DocumentSynopsis docSyn;
+};
+
+
+/**
+ * @short A thread that builds contents for PDFGenerator in the background.
+ *
+ */
+class PDFPixmapGeneratorThread : public QThread
+{
+    public:
+        PDFPixmapGeneratorThread( PDFGenerator * generator );
+        ~PDFPixmapGeneratorThread();
+
+        // set the request to the thread (it will be reparented)
+        void startGeneration( PixmapRequest * request );
+        // end generation
+        void endGeneration();
+
+        // methods for getting contents from the GUI thread
+        QImage * takeImage() const;
+        TextPage * takeTextPage() const;
+        QValueList< ObjectRect * > takeObjectRects() const;
+
+    private:
+        // can't be called from the outside (but from startGeneration)
+        void run();
+
+        class PPGThreadPrivate * d;
+};
+
+#endif