observer.h

/***************************************************************************
 *   Copyright (C) 2005 by Enrico Ros <[email protected]>                  *
 *   Copyright (C) 2005 by Albert Astals Cid <[email protected]>               *
 *   Copyright (C) 2017    Klarälvdalens Datakonsult AB, a KDAB Group      *
 *                         company, [email protected] Work sponsored by the   *
 *                         LiMux project of the city of Munich             *
 *                                                                         *
 *   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 _OKULAR_DOCUMENTOBSERVER_H_
#define _OKULAR_DOCUMENTOBSERVER_H_

#include <QVector>

#include "okularcore_export.h"

namespace Okular {

class Page;

class OKULARCORE_EXPORT DocumentObserver
{
    public:
        DocumentObserver();
        virtual ~DocumentObserver();

        DocumentObserver(const DocumentObserver &) = delete;
        DocumentObserver &operator=(const DocumentObserver &) = delete;

        enum ChangedFlags {
            Pixmap = 1,           
            Bookmark = 2,         
            Highlights = 4,       
            TextSelection = 8,    
            Annotations = 16,     
            BoundingBox = 32,     
            NeedSaveAs = 64       
        };

        enum SetupFlags {
            DocumentChanged = 1,    
            NewLayoutForPages = 2,  
            UrlChanged = 4          
        };

        virtual void notifySetup( const QVector< Okular::Page * > &pages, int setupFlags );

        virtual void notifyViewportChanged( bool smoothMove );

        virtual void notifyPageChanged( int page, int flags );

        virtual void notifyContentsCleared( int flags );

        virtual void notifyVisibleRectsChanged();

        virtual void notifyZoom( int factor );

        virtual bool canUnloadPixmap( int page ) const;

        virtual void notifyCurrentPageChanged( int previous, int current );

    private:
        class Private;
        const Private* d;
};

}

#endif