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# qgfxlinuxfb_qws.h

This is the verbatim text of the qgfxlinuxfb_qws.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /*****************************************************************************
    ** $Id: qt/src/kernel/qgfxlinuxfb_qws.h   2.3.7   edited 2003-02-27 $
    **
    ** Implementation of QGfxRaster (unaccelerated graphics context) class for
    ** Embedded Qt
    ** Created : 940721
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the kernel module of the Qt GUI Toolkit.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses for Qt/Embedded may use this file in accordance with the
    ** Qt Embedded Commercial License Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QGFXLINUXFB_H
    #define QGFXLINUXFB_H

    #ifndef QT_NO_QWS_LINUXFB
    #include "qgfx_qws.h"

    class QLinuxFbScreen : public QScreen
    {
    public:
        QLinuxFbScreen( int display_id );
        virtual ~QLinuxFbScreen();

        virtual bool initDevice();
        virtual bool connect( const QString &displaySpec );

        virtual bool useOffscreen() { return false; }

        virtual void disconnect();
        virtual void shutdownDevice();
        virtual void setMode(int,int,int);
        virtual void save();
        virtual void restore();
        virtual void blank(bool on);
        virtual void set(unsigned int,unsigned int,unsigned int,unsigned int);
        virtual uchar * cache(int,int);
        virtual void uncache(uchar *);

    protected:

        void deleteEntry(uchar *c);

        bool canaccel;
        int dataoffset;
        int cacheStart;

        static void clearCache( QScreen *instance, int );

    private:

        void delete_entry(int);
        void insert_entry(int,int,int);
        void setupOffScreen();

        int fd;
        int startupw;
        int startuph;
        int startupd;
        fb_cmap *startcmap;
    };

    #endif
    #endif