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].com. 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