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#ifndef QT_NO_QWS_QVFB

#define QTOPIA_QVFB_BRIGHTNESS

#include <stdlib.h>

#include <sys/types.h>

#include <sys/ipc.h>

#include <sys/shm.h>

#include <sys/stat.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <qvfbhdr.h>

#include <qscreenvfb_qws.h>

#include <qkbdvfb_qws.h>

#include <qmousevfb_qws.h>

#include <qwindowsystem_qws.h>

#include <qsocketnotifier.h>

#include <qapplication.h>

#include <qscreen_qws.h>

#include <qmousedriverfactory_qws.h>

#include <qkbddriverfactory_qws.h>

#include <qdebug.h>

QT_BEGIN_NAMESPACE

class QVFbScreenPrivate

{

public:

    QVFbScreenPrivate();

    ~QVFbScreenPrivate();

    bool success;

    unsigned char *shmrgn;

    int brightness;

    bool blank;

    QVFbHeader *hdr;

    QWSMouseHandler *mouse;

#ifndef QT_NO_QWS_KEYBOARD

    QWSKeyboardHandler *keyboard;

#endif

};

QVFbScreenPrivate::QVFbScreenPrivate()

    : mouse(0)

{

#ifndef QT_NO_QWS_KEYBOARD

    keyboard = 0;

#endif

    brightness = 255;

    blank = false;

}

QVFbScreenPrivate::~QVFbScreenPrivate()

{

    delete mouse;

#ifndef QT_NO_QWS_KEYBOARD

    delete keyboard;

#endif

}

/*!

    \internal

    \class QVFbScreen

    \ingroup qws

    \brief The QVFbScreen class implements a screen driver for the

    virtual framebuffer.

    Note that this class is only available in \l{Qt for Embedded Linux}.

    Custom screen drivers can be added by subclassing the

    QScreenDriverPlugin class, using the QScreenDriverFactory class to

    dynamically load the driver into the application, but there should

    only be one screen object per application.

    The Qt for Embedded Linux platform provides a \l{The Virtual

    Framebuffer}{virtual framebuffer} for development and debugging;

    the virtual framebuffer allows Qt for Embedded Linux applications to be

    developed on a desktop machine, without switching between consoles

    and X11.

    \sa QScreen, QScreenDriverPlugin, {Running Applications}

*/

/*!

    \fn bool QVFbScreen::connect(const QString & displaySpec)

    \reimp

*/

/*!

    \fn void QVFbScreen::disconnect()

    \reimp

*/

/*!

    \fn bool QVFbScreen::initDevice()

    \reimp

*/

/*!

    \fn void QVFbScreen::restore()

    \reimp

*/

/*!

    \fn void QVFbScreen::save()

    \reimp

*/

/*!

    \fn void QVFbScreen::setDirty(const QRect & r)

    \reimp

*/

/*!

    \fn void QVFbScreen::setMode(int nw, int nh, int nd)

    \reimp

*/

/*!

    \fn void QVFbScreen::shutdownDevice()

    \reimp

*/

/*!

    \fn QVFbScreen::QVFbScreen(int displayId)

    Constructs a QVNCScreen object. The \a displayId argument

    identifies the Qt for Embedded Linux server to connect to.

*/

QVFbScreen::QVFbScreen(int display_id)

    : QScreen(display_id, VFbClass), d_ptr(new QVFbScreenPrivate)

{

    d_ptr->shmrgn = 0;

    d_ptr->hdr = 0;

    data = 0;

}

/*!

    Destroys this QVFbScreen object.

*/

QVFbScreen::~QVFbScreen()

{

    delete d_ptr;

}

static QVFbScreen *connected = 0;

bool QVFbScreen::connect(const QString &displaySpec)

{

    QStringList displayArgs = displaySpec.split(QLatin1Char(':'));

    if (displayArgs.contains(QLatin1String("Gray")))

        grayscale = true;

    key_t key = ftok(QT_VFB_MOUSE_PIPE(displayId).toLocal8Bit(), 'b');

    if (key == -1)

        return false;

#if Q_BYTE_ORDER == Q_BIG_ENDIAN

#ifndef QT_QWS_FRAMEBUFFER_LITTLE_ENDIAN

    if (displayArgs.contains(QLatin1String("littleendian")))

#endif

        QScreen::setFrameBufferLittleEndian(true);

#endif

    int shmId = shmget(key, 0, 0);

    if (shmId != -1)

        d_ptr->shmrgn = (unsigned char *)shmat(shmId, 0, 0);

    else

        return false;

    if ((long)d_ptr->shmrgn == -1 || d_ptr->shmrgn == 0) {

        qDebug("No shmrgn %ld", (long)d_ptr->shmrgn);

        return false;

    }

    d_ptr->hdr = (QVFbHeader *)d_ptr->shmrgn;

    data = d_ptr->shmrgn + d_ptr->hdr->dataoffset;

    dw = w = d_ptr->hdr->width;

    dh = h = d_ptr->hdr->height;

    d = d_ptr->hdr->depth;

    switch (d) {

    case 1:

        setPixelFormat(QImage::Format_Mono);

        break;

    case 8:

        setPixelFormat(QImage::Format_Indexed8);

        break;

    case 12:

        setPixelFormat(QImage::Format_RGB444);

        break;

    case 15:

        setPixelFormat(QImage::Format_RGB555);

        break;

    case 16:

        setPixelFormat(QImage::Format_RGB16);

        break;

    case 18:

        setPixelFormat(QImage::Format_RGB666);

        break;

    case 24:

        setPixelFormat(QImage::Format_RGB888);

        break;

    case 32:

        setPixelFormat(QImage::Format_ARGB32_Premultiplied);

        break;

    }

    lstep = d_ptr->hdr->linestep;

    // Handle display physical size spec.

    int dimIdxW = -1;

    int dimIdxH = -1;

    for (int i = 0; i < displayArgs.size(); ++i) {

        if (displayArgs.at(i).startsWith(QLatin1String("mmWidth"))) {

            dimIdxW = i;

            break;

        }

    }

    for (int i = 0; i < displayArgs.size(); ++i) {

        if (displayArgs.at(i).startsWith(QLatin1String("mmHeight"))) {

            dimIdxH = i;

            break;

        }

    }

    if (dimIdxW >= 0) {

        bool ok;

        int pos = 7;

        if (displayArgs.at(dimIdxW).at(pos) == QLatin1Char('='))

            ++pos;

        int pw = displayArgs.at(dimIdxW).mid(pos).toInt(&ok);

        if (ok) {

            physWidth = pw;

            if (dimIdxH < 0)

                physHeight = dh*physWidth/dw;

        }

    }

    if (dimIdxH >= 0) {

        bool ok;

        int pos = 8;

        if (displayArgs.at(dimIdxH).at(pos) == QLatin1Char('='))

            ++pos;

        int ph = displayArgs.at(dimIdxH).mid(pos).toInt(&ok);

        if (ok) {

            physHeight = ph;

            if (dimIdxW < 0)

                physWidth = dw*physHeight/dh;

        }

    }

    if (dimIdxW < 0 && dimIdxH < 0) {

        const int dpi = 72;

        physWidth = qRound(dw * 25.4 / dpi);

        physHeight = qRound(dh * 25.4 / dpi);

    }

    qDebug("Connected to VFB server %s: %d x %d x %d %dx%dmm (%dx%ddpi)", displaySpec.toLatin1().data(),

        w, h, d, physWidth, physHeight, qRound(dw*25.4/physWidth), qRound(dh*25.4/physHeight) );

    size = lstep * h;

    mapsize = size;

    screencols = d_ptr->hdr->numcols;

    memcpy(screenclut, d_ptr->hdr->clut, sizeof(QRgb) * screencols);

    connected = this;

    if (qgetenv("QT_QVFB_BGR").toInt())

        pixeltype = BGRPixel;

    return true;

}

void QVFbScreen::disconnect()

{

    connected = 0;

    if ((long)d_ptr->shmrgn != -1 && d_ptr->shmrgn) {

        if (qApp->type() == QApplication::GuiServer && d_ptr->hdr->dataoffset >= (int)sizeof(QVFbHeader)) {

            d_ptr->hdr->serverVersion = 0;

        }

        shmdt((char*)d_ptr->shmrgn);

    }

}

bool QVFbScreen::initDevice()

{

#ifndef QT_NO_QWS_MOUSE_QVFB

    const QString mouseDev = QT_VFB_MOUSE_PIPE(displayId);

    d_ptr->mouse = new QVFbMouseHandler(QLatin1String("QVFbMouse"), mouseDev);

    qwsServer->setDefaultMouse("None");

    if (d_ptr->mouse)

        d_ptr->mouse->setScreen(this);

#endif

#if !defined(QT_NO_QWS_KBD_QVFB) && !defined(QT_NO_QWS_KEYBOARD)

    const QString keyboardDev = QT_VFB_KEYBOARD_PIPE(displayId);

    d_ptr->keyboard = new QVFbKeyboardHandler(keyboardDev);

    qwsServer->setDefaultKeyboard("None");

#endif

    if (d_ptr->hdr->dataoffset >= (int)sizeof(QVFbHeader))

        d_ptr->hdr->serverVersion = QT_VERSION;

    if(d==8) {

        screencols=256;

        if (grayscale) {

            // Build grayscale palette

            for(int loopc=0;loopc<256;loopc++) {

                screenclut[loopc]=qRgb(loopc,loopc,loopc);

            }

        } else {

            // 6x6x6 216 color cube

            int idx = 0;

            for(int ir = 0x0; ir <= 0xff; ir+=0x33) {

                for(int ig = 0x0; ig <= 0xff; ig+=0x33) {

                    for(int ib = 0x0; ib <= 0xff; ib+=0x33) {

                        screenclut[idx]=qRgb(ir, ig, ib);

                        idx++;

                    }

                }

            }

            screencols=idx;

        }

        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);

        d_ptr->hdr->numcols = screencols;

    } else if (d == 4) {

        int val = 0;

        for (int idx = 0; idx < 16; idx++, val += 17) {

            screenclut[idx] = qRgb(val, val, val);

        }

        screencols = 16;

        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);

        d_ptr->hdr->numcols = screencols;

    } else if (d == 1) {

        screencols = 2;

        screenclut[1] = qRgb(0xff, 0xff, 0xff);

        screenclut[0] = qRgb(0, 0, 0);

        memcpy(d_ptr->hdr->clut, screenclut, sizeof(QRgb) * screencols);

        d_ptr->hdr->numcols = screencols;

    }

#ifndef QT_NO_QWS_CURSOR

    QScreenCursor::initSoftwareCursor();

#endif

    return true;

}

void QVFbScreen::shutdownDevice()

{

}

void QVFbScreen::setMode(int ,int ,int)

{

}

// save the state of the graphics card

// This is needed so that e.g. we can restore the palette when switching

// between linux virtual consoles.

void QVFbScreen::save()

{

    // nothing to do.

}

// restore the state of the graphics card.

void QVFbScreen::restore()

{

}

void QVFbScreen::setDirty(const QRect& rect)

{

    const QRect r = rect.translated(-offset());

    d_ptr->hdr->dirty = true;

    d_ptr->hdr->update = d_ptr->hdr->update.united(r);

}

void QVFbScreen::setBrightness(int b)

{

    if (connected) {

        connected->d_ptr->brightness = b;

        QVFbHeader *hdr = connected->d_ptr->hdr;

        if (hdr->viewerVersion < 0x040400) // brightness not supported

            return;

        const int br = connected->d_ptr->blank ? 0 : b;

        if (hdr->brightness != br) {

            hdr->brightness = br;

            connected->setDirty(connected->region().boundingRect());

        }

    }

}

void QVFbScreen::blank(bool on)

{

    d_ptr->blank = on;

    setBrightness(connected->d_ptr->brightness);

}

#endif // QT_NO_QWS_QVFB

QT_END_NAMESPACE