tilesmanager_p.h

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/***************************************************************************
 *   Copyright (C) 2012 by Mailson Menezes <mailson@gmail.com>             *
 *   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_TILES_MANAGER_P_H_
#define _OKULAR_TILES_MANAGER_P_H_

#include "okular_export.h"
#include "area.h"

class QPixmap;

namespace Okular {

class Tile;

class TileNode
{
    public:
        TileNode();

        bool isValid() const;

        NormalizedRect rect;

        QPixmap *pixmap;

        Rotation rotation;

        bool dirty;

        double distance;

        TileNode *tiles;
        int nTiles;
        TileNode *parent;
};

class TilesManager
{
    public:
        enum TileLeaf
        {
            TerminalTile,     
            PixmapTile        
        };

        TilesManager( int pageNumber, int width, int height, Rotation rotation = Rotation0 );
        ~TilesManager();

        void setPixmap( const QPixmap *pixmap, const NormalizedRect &rect );

        bool hasPixmap( const NormalizedRect &rect );

        QList<Tile> tilesAt( const NormalizedRect &rect, TileLeaf tileLeaf );

        qulonglong totalMemory() const;

        void cleanupPixmapMemory( qulonglong numberOfBytes, const NormalizedRect &visibleRect, int visiblePageNumber );

        bool isRequesting( const NormalizedRect &rect, int pageWidth, int pageHeight ) const;

        void setRequest( const NormalizedRect &rect, int pageWidth, int pageHeight );

        void setSize( int width, int height );

        int width() const;

        int height() const;

        void setRotation( Rotation rotation );
        Rotation rotation() const;

        void markDirty();

        static NormalizedRect toRotatedRect( const NormalizedRect &rect, Rotation rotation );

        static NormalizedRect fromRotatedRect( const NormalizedRect &rect, Rotation rotation );

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

}

#endif // _OKULAR_TILES_MANAGER_P_H_