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# qscreenlinuxfb_qws.h

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    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtGui module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QSCREENLINUXFB_QWS_H
    00043 #define QSCREENLINUXFB_QWS_H
    00044
    00045 #include <QtGui/qscreen_qws.h>
    00046
    00047 struct fb_cmap;
    00048 struct fb_var_screeninfo;
    00049 struct fb_fix_screeninfo;
    00050
    00051
    00052 QT_BEGIN_HEADER
    00053
    00054 QT_BEGIN_NAMESPACE
    00055
    00056 QT_MODULE(Gui)
    00057
    00058 #ifndef QT_NO_QWS_LINUXFB
    00059
    00060 class QLinuxFb_Shared
    00061 {
    00062 public:
    00063     volatile int lastop;
    00064     volatile int optype;
    00065     volatile int fifocount;   // Accel drivers only
    00066     volatile int fifomax;
    00067     volatile int forecol;     // Foreground colour caching
    00068     volatile unsigned int buffer_offset;   // Destination
    00069     volatile int linestep;
    00070     volatile int cliptop;    // Clip rectangle
    00071     volatile int clipleft;
    00072     volatile int clipright;
    00073     volatile int clipbottom;
    00074     volatile unsigned int rop;
    00075
    00076 };
    00077
    00078 class QLinuxFbScreenPrivate;
    00079
    00080 class Q_GUI_EXPORT QLinuxFbScreen : public QScreen
    00081 {
    00082 public:
    00083     explicit QLinuxFbScreen(int display_id);
    00084     virtual ~QLinuxFbScreen();
    00085
    00086     virtual bool initDevice();
    00087     virtual bool connect(const QString &displaySpec);
    00088
    00089     virtual bool useOffscreen();
    00090
    00091     enum DriverTypes { GenericDriver, EInk8Track };
    00092
    00093     virtual void disconnect();
    00094     virtual void shutdownDevice();
    00095     virtual void setMode(int,int,int);
    00096     virtual void save();
    00097     virtual void restore();
    00098     virtual void blank(bool on);
    00099     virtual void set(unsigned int,unsigned int,unsigned int,unsigned int);
    00100     virtual uchar * cache(int);
    00101     virtual void uncache(uchar *);
    00102     virtual int sharedRamSize(void *);
    00103     virtual void setDirty(const QRect&);
    00104
    00105     QLinuxFb_Shared * shared;
    00106
    00107 protected:
    00108
    00109     void deleteEntry(uchar *);
    00110
    00111     bool canaccel;
    00112     int dataoffset;
    00113     int cacheStart;
    00114
    00115     virtual void fixupScreenInfo(fb_fix_screeninfo &finfo, fb_var_screeninfo &vinfo);
    00116     static void clearCache(QScreen *instance, int);
    00117
    00118 private:
    00119
    00120     void delete_entry(int);
    00121     void insert_entry(int,int,int);
    00122     void setupOffScreen();
    00123     void createPalette(fb_cmap &cmap, fb_var_screeninfo &vinfo, fb_fix_screeninfo &finfo);
    00124     void setPixelFormat(struct fb_var_screeninfo);
    00125
    00126     QLinuxFbScreenPrivate *d_ptr;
    00127 };
    00128
    00129 #endif // QT_NO_QWS_LINUXFB
    00130
    00131 QT_END_NAMESPACE
    00132
    00133 QT_END_HEADER
    00134
    00135 #endif // QSCREENLINUXFB_QWS_H