qwindowsystem_qws.cpp

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#include "qplatformdefs.h"

#include "qwindowsystem_qws.h"
#include "qwsevent_qws.h"
#include "qwscommand_qws_p.h"
#include "qtransportauth_qws_p.h"
#include "qwsutils_qws.h"
#include "qwscursor_qws.h"
#include "qwsdisplay_qws.h"
#include "qmouse_qws.h"
#include "qcopchannel_qws.h"
#include "qwssocket_qws.h"

#include "qapplication.h"
#include "private/qapplication_p.h"
#include "qsocketnotifier.h"
#include "qpolygon.h"
#include "qimage.h"
#include "qcursor.h"
#include <private/qpaintengine_raster_p.h>
#include "qscreen_qws.h"
#include "qwindowdefs.h"
#include "private/qlock_p.h"
#include "qwslock_p.h"
#include "qfile.h"
#include "qtimer.h"
#include "qpen.h"
#include "qdesktopwidget.h"
#include "qevent.h"
#include "qinputcontext.h"
#include "qpainter.h"

#include <qdebug.h>

#include "qkbddriverfactory_qws.h"
#include "qmousedriverfactory_qws.h"

#include <qbuffer.h>
#include <qdir.h>

#include <private/qwindowsurface_qws_p.h>
#include <private/qfontengine_qpf_p.h>

#include "qwindowsystem_p.h"


#include <stdlib.h>
#include <stdio.h>
#include <errno.h>

#ifndef QT_NO_QWS_MULTIPROCESS
#include <sys/param.h>
#include <sys/mount.h>
#endif

#if !defined(QT_NO_SOUND) && !defined(Q_OS_DARWIN)
#ifdef QT_USE_OLD_QWS_SOUND
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
#else
#include "qsoundqss_qws.h"
#endif
#endif

//#define QWS_DEBUG_FONTCLEANUP

QT_BEGIN_NAMESPACE

QWSServer Q_GUI_EXPORT *qwsServer=0;
static QWSServerPrivate *qwsServerPrivate=0;

#define MOUSE 0
#define KEY 1
//#define EVENT_BLOCK_DEBUG

QWSScreenSaver::~QWSScreenSaver()
{
}

extern QByteArray qws_display_spec;
extern void qt_init_display(); //qapplication_qws.cpp
extern QString qws_qtePipeFilename();

extern void qt_client_enqueue(const QWSEvent *); //qapplication_qws.cpp
extern QList<QWSCommand*> *qt_get_server_queue();

Q_GLOBAL_STATIC_WITH_ARGS(QString, defaultMouse, (QLatin1String("Auto")))
Q_GLOBAL_STATIC_WITH_ARGS(QString, defaultKeyboard, (QLatin1String("TTY")))
static const int FontCleanupInterval = 60 * 1000;

static int qws_keyModifiers = 0;

static QWSWindow *keyboardGrabber;
static bool keyboardGrabbing;

static int get_object_id(int count = 1)
{
    static int next=1000;
    int n = next;
    next += count;
    return n;
}
#ifndef QT_NO_QWS_INPUTMETHODS
static QWSInputMethod *current_IM = 0;

static QWSWindow *current_IM_composing_win = 0;
static int current_IM_winId = -1;
static bool force_reject_strokeIM = false;
#endif

static void cleanupFontsDir();

//#define QWS_REGION_DEBUG

class QWSWindowPrivate
{
public:
    QWSWindowPrivate();

#ifdef QT_QWS_CLIENTBLIT
    QRegion directPaintRegion;
#endif
    QRegion allocatedRegion;
#ifndef QT_NO_QWSEMBEDWIDGET
    QList<QWSWindow*> embedded;
    QWSWindow *embedder;
#endif
    QWSWindow::State state;
    Qt::WindowFlags windowFlags;
    QRegion dirtyOnScreen;
    bool painted;
};

QWSWindowPrivate::QWSWindowPrivate()
    :
#ifndef QT_NO_QWSEMBEDWIDGET
    embedder(0), state(QWSWindow::NoState),
#endif
    painted(false)
{
}

QWSWindow::QWSWindow(int i, QWSClient* client)
        : id(i), modified(false),
          onTop(false), c(client), last_focus_time(0), _opacity(255),
          opaque(true), d(new QWSWindowPrivate)
{
    surface = 0;
}


QWSWindow::State QWSWindow::state() const
{
    return d->state;
}

Qt::WindowFlags QWSWindow::windowFlags() const
{
    return d->windowFlags;
}

QRegion QWSWindow::dirtyOnScreen() const
{
    return d->dirtyOnScreen;
}

void QWSWindow::createSurface(const QString &key, const QByteArray &data)
{
#ifndef QT_NO_QWS_MULTIPROCESS
    if (surface && !surface->isBuffered())
        c->removeUnbufferedSurface();
#endif

    delete surface;
    surface = qt_screen->createSurface(key);
    surface->setPermanentState(data);

#ifndef QT_NO_QWS_MULTIPROCESS
    if (!surface->isBuffered())
        c->addUnbufferedSurface();
#endif
}

void QWSWindow::raise()
{
    qwsServerPrivate->raiseWindow(this);
#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->raise();
#endif
}

void QWSWindow::lower()
{
    qwsServerPrivate->lowerWindow(this);
#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->lower();
#endif
}

void QWSWindow::show()
{
    operation(QWSWindowOperationEvent::Show);
#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->show();
#endif
}

void QWSWindow::hide()
{
    operation(QWSWindowOperationEvent::Hide);
#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->hide();
#endif
}

void QWSWindow::setActiveWindow()
{
    qwsServerPrivate->setFocus(this, true);
#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->setActiveWindow();
#endif
}

void QWSWindow::setName(const QString &n)
{
    rgnName = n;
}

void QWSWindow::setCaption(const QString &c)
{
    rgnCaption = c;
}


static int global_focus_time_counter=100;

void QWSWindow::focus(bool get)
{
    if (get)
        last_focus_time = global_focus_time_counter++;
    if (c) {
        QWSFocusEvent event;
        event.simpleData.window = id;
        event.simpleData.get_focus = get;
        c->sendEvent(&event);
    }
}

void QWSWindow::operation(QWSWindowOperationEvent::Operation o)
{
    if (!c)
        return;
    QWSWindowOperationEvent event;
    event.simpleData.window = id;
    event.simpleData.op = o;
    c->sendEvent(&event);
}

QWSWindow::~QWSWindow()
{
#ifndef QT_NO_QWS_INPUTMETHODS
    if (current_IM_composing_win == this)
        current_IM_composing_win = 0;
#endif
#ifndef QT_NO_QWSEMBEDWIDGET
    QWSWindow *embedder = d->embedder;
    if (embedder) {
        embedder->d->embedded.removeAll(this);
        d->embedder = 0;
    }
    while (!d->embedded.isEmpty())
        stopEmbed(d->embedded.first());
#endif

#ifndef QT_NO_QWS_MULTIPROCESS
    if (surface && !surface->isBuffered()) {
        if (c && c->d_func()) // d_func() will be 0 if client is deleted
            c->removeUnbufferedSurface();
    }
#endif

    delete surface;
    delete d;
}

QRegion QWSWindow::allocatedRegion() const
{
    return d->allocatedRegion;
}

#ifdef QT_QWS_CLIENTBLIT
QRegion QWSWindow::directPaintRegion() const
{
    return d->directPaintRegion;
}

inline void QWSWindow::setDirectPaintRegion(const QRegion &r)
{
    d->directPaintRegion = r;
}
#endif

QRegion QWSWindow::paintedRegion() const
{
    return (d->painted ? d->allocatedRegion : QRegion());
}

inline void QWSWindow::setAllocatedRegion(const QRegion &region)
{
    d->allocatedRegion = region;
}

#ifndef QT_NO_QWSEMBEDWIDGET
inline void QWSWindow::startEmbed(QWSWindow *w)
{
    d->embedded.append(w);
    w->d->embedder = this;
}

inline void QWSWindow::stopEmbed(QWSWindow *w)
{
    w->d->embedder = 0;
    w->client()->sendEmbedEvent(w->winId(), QWSEmbedEvent::Region, QRegion());
    d->embedded.removeAll(w);
}
#endif // QT_NO_QWSEMBEDWIDGET

/*********************************************************************
 *
 * Class: QWSClient
 *
 *********************************************************************/

class QWSClientPrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QWSClient)

public:
    QWSClientPrivate();
    ~QWSClientPrivate();

    void setLockId(int id);
    void unlockCommunication();

private:
#ifndef QT_NO_QWS_MULTIPROCESS
    QWSLock *clientLock;
    bool shutdown;
    int numUnbufferedSurfaces;
#endif
    QSet<QByteArray> usedFonts;
    friend class QWSServerPrivate;
};

QWSClientPrivate::QWSClientPrivate()
{
#ifndef QT_NO_QWS_MULTIPROCESS
    clientLock = 0;
    shutdown = false;
    numUnbufferedSurfaces = 0;
#endif
}

QWSClientPrivate::~QWSClientPrivate()
{
#ifndef QT_NO_QWS_MULTIPROCESS
    delete clientLock;
#endif
}

void QWSClientPrivate::setLockId(int id)
{
#ifdef QT_NO_QWS_MULTIPROCESS
    Q_UNUSED(id);
#else
    clientLock = new QWSLock(id);
#endif
}

void QWSClientPrivate::unlockCommunication()
{
#ifndef QT_NO_QWS_MULTIPROCESS
    if (clientLock)
        clientLock->unlock(QWSLock::Communication);
#endif
}

//always use frame buffer
QWSClient::QWSClient(QObject* parent, QWS_SOCK_BASE* sock, int id)
    : QObject(*new QWSClientPrivate, parent), command(0), cid(id)
{
#ifdef QT_NO_QWS_MULTIPROCESS
    Q_UNUSED(sock);
    isClosed = false;
#else
    csocket = 0;
    if (!sock) {
        socketDescriptor = -1;
        isClosed = false;
    } else {
        csocket = static_cast<QWSSocket*>(sock); //###
        isClosed = false;

        csocket->flush();
        socketDescriptor = csocket->socketDescriptor();
        connect(csocket, SIGNAL(readyRead()), this, SIGNAL(readyRead()));
        connect(csocket, SIGNAL(disconnected()), this, SLOT(closeHandler()));
        connect(csocket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(errorHandler()));
    }
#endif //QT_NO_QWS_MULTIPROCESS
}

QWSClient::~QWSClient()
{
    qDeleteAll(cursors);
    delete command;
#ifndef QT_NO_QWS_MULTIPROCESS
    delete csocket;
#endif
}

#ifndef QT_NO_QWS_MULTIPROCESS
void QWSClient::removeUnbufferedSurface()
{
    Q_D(QWSClient);
    --d->numUnbufferedSurfaces;
}

void QWSClient::addUnbufferedSurface()
{
    Q_D(QWSClient);
    ++d->numUnbufferedSurfaces;
}
#endif // QT_NO_QWS_MULTIPROCESS

void QWSClient::setIdentity(const QString& i)
{
    id = i;
}

void QWSClient::closeHandler()
{
    isClosed = true;
    emit connectionClosed();
}

void QWSClient::errorHandler()
{
#if defined(QWS_SOCKET_DEBUG)
    qDebug("Client %p error %s", this, csocket ? csocket->errorString().toLatin1().constData() : "(no socket)");
#endif
    isClosed = true;
//####Do we need to clean out the pipes?

    emit connectionClosed();
}

int QWSClient::socket() const
{
    return socketDescriptor;
}

void QWSClient::sendEvent(QWSEvent* event)
{
#ifndef QT_NO_QWS_MULTIPROCESS
    if (csocket) {
        // qDebug() << "QWSClient::sendEvent type " << event->type << " socket state " << csocket->state();
        if ((QAbstractSocket::SocketState)(csocket->state()) == QAbstractSocket::ConnectedState) {
            event->write(csocket);
        }
    }
    else
#endif
    {
        qt_client_enqueue(event);
    }
}

void QWSClient::sendRegionEvent(int winid, QRegion rgn, int type
#ifdef QT_QWS_CLIENTBLIT
        , int id
#endif
        )
{
#ifndef QT_NO_QWS_MULTIPROCESS
    Q_D(QWSClient);
    if (d->clientLock)
        d->clientLock->lock(QWSLock::RegionEvent);
#endif

    QWSRegionEvent event;
    event.setData(winid, rgn, type);
#ifdef QT_QWS_CLIENTBLIT
    event.simpleData.id = id;
#endif

//    qDebug() << "Sending Region event to" << winid << "rgn" << rgn << "type" << type;

    sendEvent(&event);
}

extern int qt_servershmid;

void QWSClient::sendConnectedEvent(const char *display_spec)
{
    QWSConnectedEvent event;
    event.simpleData.window = 0;
    event.simpleData.len = strlen(display_spec) + 1;
    event.simpleData.clientId = cid;
    event.simpleData.servershmid = qt_servershmid;
    char * tmp=(char *)display_spec;
    event.setData(tmp, event.simpleData.len);
    sendEvent(&event);
}

void QWSClient::sendMaxWindowRectEvent(const QRect &rect)
{
    QWSMaxWindowRectEvent event;
    event.simpleData.window = 0;
    event.simpleData.rect = rect;
    sendEvent(&event);
}

#ifndef QT_NO_QWS_PROPERTIES
void QWSClient::sendPropertyNotifyEvent(int property, int state)
{
    QWSPropertyNotifyEvent event;
    event.simpleData.window = 0; // not used yet
    event.simpleData.property = property;
    event.simpleData.state = state;
    sendEvent(&event);
}

void QWSClient::sendPropertyReplyEvent(int property, int len, const char *data)
{
    QWSPropertyReplyEvent event;
    event.simpleData.window = 0; // not used yet
    event.simpleData.property = property;
    event.simpleData.len = len;
    event.setData(data, len);
    sendEvent(&event);
}
#endif //QT_NO_QWS_PROPERTIES

void QWSClient::sendSelectionClearEvent(int windowid)
{
    QWSSelectionClearEvent event;
    event.simpleData.window = windowid;
    sendEvent(&event);
}

void QWSClient::sendSelectionRequestEvent(QWSConvertSelectionCommand *cmd, int windowid)
{
    QWSSelectionRequestEvent event;
    event.simpleData.window = windowid;
    event.simpleData.requestor = cmd->simpleData.requestor;
    event.simpleData.property = cmd->simpleData.selection;
    event.simpleData.mimeTypes = cmd->simpleData.mimeTypes;
    sendEvent(&event);
}

#ifndef QT_NO_QWSEMBEDWIDGET

void QWSClient::sendEmbedEvent(int windowid, QWSEmbedEvent::Type type,
                               const QRegion &region)
{
    QWSEmbedEvent event;
    event.setData(windowid, type, region);
    sendEvent(&event);
}
#endif // QT_NO_QWSEMBEDWIDGET

/*********************************************************************
 *
 * Class: QWSServer
 *
 *********************************************************************/

struct QWSCommandStruct
{
    QWSCommandStruct(QWSCommand *c, QWSClient *cl) :command(c),client(cl){}
    ~QWSCommandStruct() { delete command; }

    QWSCommand *command;
    QWSClient *client;

};

QWSServer::QWSServer(int flags, QObject *parent) :
    QObject(*new QWSServerPrivate, parent)
{
    Q_D(QWSServer);
    QT_TRY {
        d->initServer(flags);
    } QT_CATCH(...) {
        qwsServer = 0;
        qwsServerPrivate = 0;
        QT_RETHROW;
    }
}

#ifdef QT3_SUPPORT

QWSServer::QWSServer(int flags, QObject *parent, const char *name) :
    QObject(*new QWSServerPrivate, parent)
{
    Q_D(QWSServer);
    setObjectName(QString::fromAscii(name));
    d->initServer(flags);
}
#endif


#ifndef QT_NO_QWS_MULTIPROCESS
static void ignoreSignal(int) {} // Used to eat SIGPIPE signals below
#endif

bool QWSServerPrivate::screensaverblockevent( int index, int *screensaverinterval, bool isDown )
{
    static bool ignoreEvents[2] = { false, false };
    if ( isDown ) {
        if ( !ignoreEvents[index] ) {
            bool wake = false;
            if ( screensaverintervals ) {
                if ( screensaverinterval != screensaverintervals ) {
                    wake = true;
                }
            }
            if ( screensaverblockevents && wake ) {
#ifdef EVENT_BLOCK_DEBUG
                qDebug( "waking the screen" );
#endif
                ignoreEvents[index] = true;
            } else if ( !screensaverblockevents ) {
#ifdef EVENT_BLOCK_DEBUG
                qDebug( "the screen was already awake" );
#endif
                ignoreEvents[index] = false;
            }
        }
    } else {
        if ( ignoreEvents[index] ) {
#ifdef EVENT_BLOCK_DEBUG
            qDebug( "mouseup?" );
#endif
            ignoreEvents[index] = false;
            return true;
        }
    }
    return ignoreEvents[index];
}

void QWSServerPrivate::initServer(int flags)
{
    Q_Q(QWSServer);
    Q_ASSERT(!qwsServer);
    qwsServer = q;
    qwsServerPrivate = this;
    disablePainting = false;
#ifndef QT_NO_QWS_MULTIPROCESS
    ssocket = new QWSServerSocket(qws_qtePipeFilename(), q);
    QObject::connect(ssocket, SIGNAL(newConnection()), q, SLOT(_q_newConnection()));

    if ( !ssocket->isListening()) {
        perror("QWSServerPrivate::initServer: server socket not listening");
        qFatal("Failed to bind to %s", qws_qtePipeFilename().toLatin1().constData());
    }

    struct linger tmp;
    tmp.l_onoff=1;
    tmp.l_linger=0;
    setsockopt(ssocket->socketDescriptor(),SOL_SOCKET,SO_LINGER,(char *)&tmp,sizeof(tmp));


    signal(SIGPIPE, ignoreSignal); //we get it when we read
#endif
    focusw = 0;
    mouseGrabber = 0;
    mouseGrabbing = false;
    inputMethodMouseGrabbed = false;
    keyboardGrabber = 0;
    keyboardGrabbing = false;
#ifndef QT_NO_QWS_CURSOR
    haveviscurs = false;
    cursor = 0;
    nextCursor = 0;
#endif

#ifndef QT_NO_QWS_MULTIPROCESS

    if (!geteuid()) {
#if defined(Q_OS_LINUX) && !defined(QT_LINUXBASE)
        if(mount(0,"/var/shm", "shm", 0, 0)) {
            /* This just confuses people with 2.2 kernels
            if (errno != EBUSY)
                qDebug("Failed mounting shm fs on /var/shm: %s",strerror(errno));
            */
        }
#endif
    }
#endif

    // no selection yet
    selectionOwner.windowid = -1;
    selectionOwner.time.set(-1, -1, -1, -1);

    cleanupFontsDir();

    // initialize the font database
    // from qfontdatabase_qws.cpp
    extern void qt_qws_init_fontdb();
    qt_qws_init_fontdb();

    openDisplay();

    screensavertimer = new QTimer(q);
    screensavertimer->setSingleShot(true);
    QObject::connect(screensavertimer, SIGNAL(timeout()), q, SLOT(_q_screenSaverTimeout()));
    _q_screenSaverWake();

    clientMap[-1] = new QWSClient(q, 0, 0);

    if (!bgBrush)
        bgBrush = new QBrush(QColor(0x20, 0xb0, 0x50));

    initializeCursor();

    // input devices
    if (!(flags&QWSServer::DisableMouse)) {
        q->openMouse();
    }
#ifndef QT_NO_QWS_KEYBOARD
    if (!(flags&QWSServer::DisableKeyboard)) {
        q->openKeyboard();
    }
#endif

#if !defined(QT_NO_SOUND) && !defined(QT_EXTERNAL_SOUND_SERVER) && !defined(Q_OS_DARWIN)
    soundserver = new QWSSoundServer(q);
#endif
}

QWSServer::~QWSServer()
{
    closeMouse();
#ifndef QT_NO_QWS_KEYBOARD
    closeKeyboard();
#endif
    d_func()->cleanupFonts(/*force =*/true);
}

void QWSServer::timerEvent(QTimerEvent *e)
{
    Q_D(QWSServer);
    if (e->timerId() == d->fontCleanupTimer.timerId()) {
        d->cleanupFonts();
        d->fontCleanupTimer.stop();
    } else {
        QObject::timerEvent(e);
    }
}

const QList<QWSWindow*> &QWSServer::clientWindows()
{
    Q_D(QWSServer);
    return d->windows;
}

void QWSServerPrivate::releaseMouse(QWSWindow* w)
{
    if (w && mouseGrabber == w) {
        mouseGrabber = 0;
        mouseGrabbing = false;
#ifndef QT_NO_QWS_CURSOR
        if (nextCursor) {
            // Not grabbing -> set the correct cursor
            setCursor(nextCursor);
            nextCursor = 0;
        }
#endif
    }
}

void QWSServerPrivate::releaseKeyboard(QWSWindow* w)
{
    if (keyboardGrabber == w) {
        keyboardGrabber = 0;
        keyboardGrabbing = false;
    }
}

void QWSServerPrivate::handleWindowClose(QWSWindow *w)
{
    w->shuttingDown();
    if (focusw == w)
        setFocus(w,false);
    if (mouseGrabber == w)
        releaseMouse(w);
    if (keyboardGrabber == w)
        releaseKeyboard(w);
}


#ifndef QT_NO_QWS_MULTIPROCESS

void QWSServerPrivate::_q_newConnection()
{
    Q_Q(QWSServer);
    while (QWS_SOCK_BASE *sock = ssocket->nextPendingConnection()) {
        int socket = sock->socketDescriptor();
        sock->setParent(0);

        QWSClient *client = new QWSClient(q,sock, get_object_id());
        clientMap[socket] = client;

#ifndef QT_NO_SXE
#ifdef QTRANSPORTAUTH_DEBUG
        qDebug( "Transport auth connected: unix stream socket %d", socket );
#endif
        // get a handle to the per-process authentication service
        QTransportAuth *a = QTransportAuth::getInstance();

        // assert that this transport is trusted
        QTransportAuth::Data *d = a->connectTransport(
                QTransportAuth::UnixStreamSock |
                QTransportAuth::Trusted, socket );

        QAuthDevice *ad = a->recvBuf( d, sock );
        ad->setClient(client);

        QObject::connect(ad, SIGNAL(readyRead()),
                q, SLOT(_q_doClient()));

        QObject::connect(client, SIGNAL(connectionClosed()),
                q, SLOT(_q_clientClosed()));
#else
        QObject::connect(client, SIGNAL(readyRead()),
                         q, SLOT(_q_doClient()));
        QObject::connect(client, SIGNAL(connectionClosed()),
                         q, SLOT(_q_clientClosed()));
#endif // QT_NO_SXE

        client->sendConnectedEvent(qws_display_spec.constData());

        if (clientMap.contains(socket)) {
            QList<QScreen*> screens = qt_screen->subScreens();
            if (screens.isEmpty())
                screens.append(qt_screen);
            for (int i = 0; i < screens.size(); ++i) {
                const QApplicationPrivate *ap = QApplicationPrivate::instance();
                QScreen *screen = screens.at(i);
                const QRect rect = ap->maxWindowRect(screen);
                if (!rect.isEmpty())
                    client->sendMaxWindowRectEvent(rect);
                if (screen->isTransformed()) {
                    QWSScreenTransformationEvent event;
                    event.simpleData.screen = i;
                    event.simpleData.transformation = screen->transformOrientation();
                    client->sendEvent(&event);
                }
            }
        }

        // pre-provide some object id's
        QWSCreateCommand cmd(30);
        invokeCreate(&cmd, client);
    }
}
void QWSServerPrivate::_q_clientClosed()
{
    Q_Q(QWSServer);
    QWSClient* cl = (QWSClient*)q->sender();

    // Remove any queued commands for this client
    int i = 0;
    while (i < commandQueue.size()) {
        QWSCommandStruct *cs = commandQueue.at(i);
        if (cs->client == cl) {
            commandQueue.removeAt(i);
            delete cs;
        } else {
            ++i;
        }
    }

#ifndef QT_NO_COP
    // Enfore unsubscription from all channels.
    QCopChannel::detach(cl);
#endif

    // Shut down all windows for this client
    for (int i = 0; i < windows.size(); ++i) {
        QWSWindow* w = windows.at(i);
        if (w->forClient(cl))
            w->shuttingDown();
    }

    // Delete all windows for this client
    QRegion exposed;
    i = 0;
    while (i < windows.size()) {
        QWSWindow* w = windows.at(i);
        if (w->forClient(cl)) {
            windows.takeAt(i);
            w->c = 0; //so we don't send events to it anymore
            releaseMouse(w);
            releaseKeyboard(w);
            exposed += w->allocatedRegion();
//                rgnMan->remove(w->allocationIndex());
            if (focusw == w)
                setFocus(focusw,0);
            if (mouseGrabber == w)
                releaseMouse(w);
            if (i < nReserved)
                --nReserved;
#ifndef QT_NO_QWS_PROPERTIES
            propertyManager.removeProperties(w->winId());
#endif
            emit q->windowEvent(w, QWSServer::Destroy);
            w->d->state = QWSWindow::Destroyed; //???
            deletedWindows.append(w);
        } else {
            ++i;
        }
    }
    if (deletedWindows.count())
        QTimer::singleShot(0, q, SLOT(_q_deleteWindowsLater()));

    QWSClientPrivate *clientPrivate = cl->d_func();
    if (!clientPrivate->shutdown) {
#if defined(QWS_DEBUG_FONTCLEANUP)
        qDebug() << "client" << cl->clientId() << "crashed";
#endif
        // this would be the place to emit a signal to notify about the
        // crash of a client
        crashedClientIds.append(cl->clientId());
        fontCleanupTimer.start(10, q_func());
    }
    clientPrivate->shutdown = true;

    while (!clientPrivate->usedFonts.isEmpty()) {
        const QByteArray font = *clientPrivate->usedFonts.begin();
#if defined(QWS_DEBUG_FONTCLEANUP)
        qDebug() << "dereferencing font" << font << "from disconnected client";
#endif
        dereferenceFont(clientPrivate, font);
    }
    clientPrivate->usedFonts.clear();

    //qDebug("removing client %d with socket %d", cl->clientId(), cl->socket());
    clientMap.remove(cl->socket());
    if (cl == cursorClient)
        cursorClient = 0;
    if (qt_screen->clearCacheFunc)
        (qt_screen->clearCacheFunc)(qt_screen, cl->clientId());  // remove any remaining cache entries.
    cl->deleteLater();

    update_regions();
    exposeRegion(exposed);
}

void QWSServerPrivate::_q_deleteWindowsLater()
{
    qDeleteAll(deletedWindows);
    deletedWindows.clear();
}

#endif //QT_NO_QWS_MULTIPROCESS

void QWSServerPrivate::referenceFont(QWSClientPrivate *client, const QByteArray &font)
{
    if (!client->usedFonts.contains(font)) {
        client->usedFonts.insert(font);

        ++fontReferenceCount[font];
#if defined(QWS_DEBUG_FONTCLEANUP)
        qDebug() << "Client" << client->q_func()->clientId() << "added font" << font;
        qDebug() << "Refcount is" << fontReferenceCount[font];
#endif
    }
}

void QWSServerPrivate::dereferenceFont(QWSClientPrivate *client, const QByteArray &font)
{
    if (client->usedFonts.contains(font)) {
        client->usedFonts.remove(font);

        Q_ASSERT(fontReferenceCount[font]);
        if (!--fontReferenceCount[font] && !fontCleanupTimer.isActive())
            fontCleanupTimer.start(FontCleanupInterval, q_func());

#if defined(QWS_DEBUG_FONTCLEANUP)
        qDebug() << "Client" << client->q_func()->clientId() << "removed font" << font;
        qDebug() << "Refcount is" << fontReferenceCount[font];
#endif
    }
}

static void cleanupFontsDir()
{
    static bool dontDelete = !qgetenv("QWS_KEEP_FONTS").isEmpty();
    if (dontDelete)
        return;

    extern QString qws_fontCacheDir();
    QDir dir(qws_fontCacheDir(), QLatin1String("*.qsf"));
    for (uint i = 0; i < dir.count(); ++i) {
#if defined(QWS_DEBUG_FONTCLEANUP)
        qDebug() << "removing stale font file" << dir[i];
#endif
        dir.remove(dir[i]);
    }
}

void QWSServerPrivate::cleanupFonts(bool force)
{
    static bool dontDelete = !qgetenv("QWS_KEEP_FONTS").isEmpty();
    if (dontDelete)
        return;

#if defined(QWS_DEBUG_FONTCLEANUP)
    qDebug() << "cleanupFonts()";
#endif
    if (!fontReferenceCount.isEmpty()) {
        QMap<QByteArray, int>::Iterator it = fontReferenceCount.begin();
        while (it != fontReferenceCount.end()) {
            if (it.value() && !force) {
                ++it;
                continue;
            }

            const QByteArray &fontName = it.key();
#if defined(QWS_DEBUG_FONTCLEANUP)
            qDebug() << "removing unused font file" << fontName;
#endif
            QT_TRY {
                QFile::remove(QFile::decodeName(fontName));
                sendFontRemovedEvent(fontName);

                it = fontReferenceCount.erase(it);
            } QT_CATCH(...) {
                // so we were not able to remove the font.
                // don't be angry and just continue with the next ones.
                ++it;
            }
        }
    }

    if (crashedClientIds.isEmpty())
        return;

    QList<QByteArray> removedFonts;
#if !defined(QT_NO_QWS_QPF2) && !defined(QT_FONTS_ARE_RESOURCES)
    removedFonts = QFontEngineQPF::cleanUpAfterClientCrash(crashedClientIds);
#endif
    crashedClientIds.clear();

    for (int i = 0; i < removedFonts.count(); ++i)
        sendFontRemovedEvent(removedFonts.at(i));
}

void QWSServerPrivate::sendFontRemovedEvent(const QByteArray &font)
{
    QWSFontEvent event;
    event.simpleData.type = QWSFontEvent::FontRemoved;
    event.setData(font.constData(), font.length(), false);

    QMap<int,QWSClient*>::const_iterator it = clientMap.constBegin();
    for (; it != clientMap.constEnd(); ++it)
        (*it)->sendEvent(&event);
}

QWSCommand* QWSClient::readMoreCommand()
{
#ifndef QT_NO_QWS_MULTIPROCESS
    QIODevice *socket = 0;
#endif
#ifndef QT_NO_SXE
    if (socketDescriptor != -1)  // not server socket
        socket = QTransportAuth::getInstance()->passThroughByClient( this );
#if QTRANSPORTAUTH_DEBUG
    if (socket) {
        char displaybuf[1024];
        qint64 bytes = socket->bytesAvailable();
        if ( bytes > 511 ) bytes = 511;
        hexstring( displaybuf, ((unsigned char *)(reinterpret_cast<QAuthDevice*>(socket)->buffer().constData())), bytes );
        qDebug( "readMoreCommand: %lli bytes - %s", socket->bytesAvailable(), displaybuf );
    }
#endif
#endif // QT_NO_SXE

#ifndef QT_NO_QWS_MULTIPROCESS
    if (!socket)
        socket = csocket;   // server socket
    if (socket) {
        // read next command
        if (!command) {
            int command_type = qws_read_uint(socket);

            if (command_type >= 0)
                command = QWSCommand::factory(command_type);
        }
        if (command) {
            if (command->read(socket)) {
                // Finished reading a whole command.
                QWSCommand* result = command;
                command = 0;
                return result;
            }
        }

        // Not finished reading a whole command.
        return 0;
    } else
#endif // QT_NO_QWS_MULTIPROCESS
    {
        QList<QWSCommand*> *serverQueue = qt_get_server_queue();
        return serverQueue->isEmpty() ? 0 : serverQueue->takeFirst();
    }
}


void QWSServer::processEventQueue()
{
    if (qwsServerPrivate)
        qwsServerPrivate->doClient(qwsServerPrivate->clientMap.value(-1));
}


#ifndef QT_NO_QWS_MULTIPROCESS
void QWSServerPrivate::_q_doClient()
{
    Q_Q(QWSServer);

    QWSClient* client;
#ifndef QT_NO_SXE
    QAuthDevice *ad = qobject_cast<QAuthDevice*>(q->sender());
    if (ad)
        client = (QWSClient*)ad->client();
    else
#endif
        client = (QWSClient*)q->sender();

    if (doClientIsActive) {
        pendingDoClients.append(client);
        return;
    }
    doClientIsActive = true;

    doClient(client);

    while (!pendingDoClients.isEmpty()) {
        doClient(pendingDoClients.takeFirst());
    }

    doClientIsActive = false;
}
#endif // QT_NO_QWS_MULTIPROCESS

void QWSServerPrivate::doClient(QWSClient *client)
{
    QWSCommand* command=client->readMoreCommand();

    while (command) {
        QWSCommandStruct *cs = new QWSCommandStruct(command, client);
        commandQueue.append(cs);
        // Try for some more...
        command=client->readMoreCommand();
    }

    while (!commandQueue.isEmpty()) {
        QWSCommandStruct *cs = commandQueue.takeAt(0);
        switch (cs->command->type) {
        case QWSCommand::Identify:
            invokeIdentify((QWSIdentifyCommand*)cs->command, cs->client);
            break;
        case QWSCommand::Create:
            invokeCreate((QWSCreateCommand*)cs->command, cs->client);
            break;
#ifndef QT_NO_QWS_MULTIPROCESS
        case QWSCommand::Shutdown:
            cs->client->d_func()->shutdown = true;
            break;
#endif
        case QWSCommand::RegionName:
            invokeRegionName((QWSRegionNameCommand*)cs->command, cs->client);
            break;
        case QWSCommand::Region:
            invokeRegion((QWSRegionCommand*)cs->command, cs->client);
            cs->client->d_func()->unlockCommunication();
            break;
        case QWSCommand::RegionMove:
            invokeRegionMove((QWSRegionMoveCommand*)cs->command, cs->client);
            cs->client->d_func()->unlockCommunication();
            break;
        case QWSCommand::RegionDestroy:
            invokeRegionDestroy((QWSRegionDestroyCommand*)cs->command, cs->client);
            break;
#ifndef QT_NO_QWS_PROPERTIES
        case QWSCommand::AddProperty:
            invokeAddProperty((QWSAddPropertyCommand*)cs->command);
            break;
        case QWSCommand::SetProperty:
            invokeSetProperty((QWSSetPropertyCommand*)cs->command);
            break;
        case QWSCommand::RemoveProperty:
            invokeRemoveProperty((QWSRemovePropertyCommand*)cs->command);
            break;
        case QWSCommand::GetProperty:
            invokeGetProperty((QWSGetPropertyCommand*)cs->command, cs->client);
            break;
#endif
        case QWSCommand::SetSelectionOwner:
            invokeSetSelectionOwner((QWSSetSelectionOwnerCommand*)cs->command);
            break;
        case QWSCommand::RequestFocus:
            invokeSetFocus((QWSRequestFocusCommand*)cs->command, cs->client);
            break;
        case QWSCommand::ChangeAltitude:
            invokeSetAltitude((QWSChangeAltitudeCommand*)cs->command,
                               cs->client);
            cs->client->d_func()->unlockCommunication();
            break;
        case QWSCommand::SetOpacity:
            invokeSetOpacity((QWSSetOpacityCommand*)cs->command,
                               cs->client);
            break;

#ifndef QT_NO_QWS_CURSOR
        case QWSCommand::DefineCursor:
            invokeDefineCursor((QWSDefineCursorCommand*)cs->command, cs->client);
            break;
        case QWSCommand::SelectCursor:
            invokeSelectCursor((QWSSelectCursorCommand*)cs->command, cs->client);
            break;
        case QWSCommand::PositionCursor:
            invokePositionCursor((QWSPositionCursorCommand*)cs->command, cs->client);
            break;
#endif
        case QWSCommand::GrabMouse:
            invokeGrabMouse((QWSGrabMouseCommand*)cs->command, cs->client);
            break;
        case QWSCommand::GrabKeyboard:
            invokeGrabKeyboard((QWSGrabKeyboardCommand*)cs->command, cs->client);
            break;
#if !defined(QT_NO_SOUND) && !defined(Q_OS_DARWIN)
        case QWSCommand::PlaySound:
            invokePlaySound((QWSPlaySoundCommand*)cs->command, cs->client);
            break;
#endif
#ifndef QT_NO_COP
        case QWSCommand::QCopRegisterChannel:
            invokeRegisterChannel((QWSQCopRegisterChannelCommand*)cs->command,
                                   cs->client);
            break;
        case QWSCommand::QCopSend:
            invokeQCopSend((QWSQCopSendCommand*)cs->command, cs->client);
            break;
#endif
#ifndef QT_NO_QWS_INPUTMETHODS
        case QWSCommand::IMUpdate:
            invokeIMUpdate((QWSIMUpdateCommand*)cs->command, cs->client);
            break;
        case QWSCommand::IMResponse:
            invokeIMResponse((QWSIMResponseCommand*)cs->command, cs->client);
            break;
        case QWSCommand::IMMouse:
            {
                if (current_IM) {
                    QWSIMMouseCommand *cmd = (QWSIMMouseCommand *) cs->command;
                    current_IM->mouseHandler(cmd->simpleData.index,
                                              cmd->simpleData.state);
                }
            }
            break;
#endif
        case QWSCommand::Font:
            invokeFont((QWSFontCommand *)cs->command, cs->client);
            break;
        case QWSCommand::RepaintRegion:
            invokeRepaintRegion((QWSRepaintRegionCommand*)cs->command,
                                cs->client);
            cs->client->d_func()->unlockCommunication();
            break;
#ifndef QT_NO_QWSEMBEDWIDGET
        case QWSCommand::Embed:
            invokeEmbed(static_cast<QWSEmbedCommand*>(cs->command),
                        cs->client);
            break;
#endif
        case QWSCommand::ScreenTransform:
            invokeScreenTransform(static_cast<QWSScreenTransformCommand*>(cs->command),
                                  cs->client);
            break;
        }
        delete cs;
    }
}


void QWSServerPrivate::showCursor()
{
#ifndef QT_NO_QWS_CURSOR
    if (qt_screencursor)
        qt_screencursor->show();
#endif
}

void QWSServerPrivate::hideCursor()
{
#ifndef QT_NO_QWS_CURSOR
    if (qt_screencursor)
        qt_screencursor->hide();
#endif
}

void QWSServer::enablePainting(bool enable)
{
    Q_D(QWSServer);

    if (d->disablePainting == !enable)
        return;

    d->disablePainting = !enable;

    if (enable) {
        // Reset the server side allocated regions to ensure update_regions()
        // will send out region events.
        for (int i = 0; i < d->windows.size(); ++i) {
            QWSWindow *w = d->windows.at(i);
            w->setAllocatedRegion(QRegion());
#ifdef QT_QWS_CLIENTBLIT
            w->setDirectPaintRegion(QRegion());
#endif
        }
        d->update_regions();
        d->showCursor();
    } else {
        // Disable painting by clients by taking away their allocated region.
        // To ensure mouse events are still delivered to the correct windows,
        // the allocated regions are not modified on the server.
        for (int i = 0; i < d->windows.size(); ++i) {
            QWSWindow *w = d->windows.at(i);
            w->client()->sendRegionEvent(w->winId(), QRegion(),
                                         QWSRegionEvent::Allocation);
#ifdef QT_QWS_CLIENTBLIT
            w->client()->sendRegionEvent(w->winId(), QRegion(),
                                         QWSRegionEvent::DirectPaint);
#endif
        }
        d->hideCursor();
    }
}

void QWSServer::refresh()
{
    Q_D(QWSServer);
    d->exposeRegion(QScreen::instance()->region());
//### send repaint to non-buffered windows
}

void QWSServer::refresh(QRegion & r)
{
    Q_D(QWSServer);
    d->exposeRegion(r);
//### send repaint to non-buffered windows
}

void QWSServer::setMaxWindowRect(const QRect &rect)
{
    QList<QScreen*> subScreens = qt_screen->subScreens();
    if (subScreens.isEmpty() && qt_screen != 0)
        subScreens.append(qt_screen);

    for (int i = 0; i < subScreens.size(); ++i) {
        const QScreen *screen = subScreens.at(i);
        const QRect r = (screen->region() & rect).boundingRect();
        if (r.isEmpty())
            continue;

        QApplicationPrivate *ap = QApplicationPrivate::instance();
        if (ap->maxWindowRect(screen) != r) {
            ap->setMaxWindowRect(screen, i, r);
            qwsServerPrivate->sendMaxWindowRectEvents(r);
        }
    }
}

void QWSServerPrivate::sendMaxWindowRectEvents(const QRect &rect)
{
    QMap<int,QWSClient*>::const_iterator it = clientMap.constBegin();
    for (; it != clientMap.constEnd(); ++it)
        (*it)->sendMaxWindowRectEvent(rect);
}

void QWSServer::setDefaultMouse(const char *m)
{
    *defaultMouse() = QString::fromAscii(m);
}

void QWSServer::setDefaultKeyboard(const char *k)
{
    *defaultKeyboard() = QString::fromAscii(k);
}

#ifndef QT_NO_QWS_CURSOR
static bool prevWin;
#endif


extern int *qt_last_x,*qt_last_y;


void QWSServer::sendMouseEvent(const QPoint& pos, int state, int wheel)
{
    bool block = qwsServerPrivate->screensaverblockevent(MOUSE, qwsServerPrivate->screensaverinterval, state);
#ifdef EVENT_BLOCK_DEBUG
    qDebug() << "sendMouseEvent" << pos.x() << pos.y() << state << (block ? "block" : "pass");
#endif

    if (state || wheel)
        qwsServerPrivate->_q_screenSaverWake();

    if ( block )
        return;

    QPoint tpos;
    // transformations
    if (qt_screen->isTransformed()) {
    QSize s = QSize(qt_screen->deviceWidth(), qt_screen->deviceHeight());
    tpos = qt_screen->mapFromDevice(pos, s);
    } else {
    tpos = pos;
    }

    if (qt_last_x) {
         *qt_last_x = tpos.x();
         *qt_last_y = tpos.y();
    }
    QWSServer::mousePosition = tpos;
    qwsServerPrivate->mouseState = state;

#ifndef QT_NO_QWS_INPUTMETHODS
    const int btnMask = Qt::LeftButton | Qt::RightButton | Qt::MidButton;
    int stroke_count; // number of strokes to keep shown.
    if (force_reject_strokeIM || !current_IM)
    {
    stroke_count = 0;
    } else {
    stroke_count = current_IM->filter(tpos, state, wheel);
    }

    if (stroke_count == 0) {
    if (state&btnMask)
        force_reject_strokeIM = true;
        QWSServerPrivate::sendMouseEventUnfiltered(tpos, state, wheel);
    }
    // stop force reject after stroke ends.
    if (state&btnMask && force_reject_strokeIM)
    force_reject_strokeIM = false;
    // on end of stroke, force_rejct
    // and once a stroke is rejected, do not try again till pen is lifted
#else
    QWSServerPrivate::sendMouseEventUnfiltered(tpos, state, wheel);
#endif // end QT_NO_QWS_FSIM
}

void QWSServerPrivate::sendMouseEventUnfiltered(const QPoint &pos, int state, int wheel)
{
    const int btnMask = Qt::LeftButton | Qt::RightButton | Qt::MidButton;
    QWSMouseEvent event;

    QWSWindow *win = qwsServer->windowAt(pos);

    QWSClient *serverClient = qwsServerPrivate->clientMap.value(-1);
    QWSClient *winClient = win ? win->client() : 0;


    bool imMouse = false;
#ifndef QT_NO_QWS_INPUTMETHODS
    // check for input method window
    if (current_IM && current_IM_winId != -1) {
        QWSWindow *kbw = keyboardGrabber ? keyboardGrabber :
                         qwsServerPrivate->focusw;

        imMouse = kbw == win;
        if ( !imMouse ) {
            QWidget *target = winClient == serverClient ?
                              QApplication::widgetAt(pos) : 0;
            imMouse = target && (target->testAttribute(Qt::WA_InputMethodTransparent));
        }
    }
#endif

    //If grabbing window disappears, grab is still active until
    //after mouse release.
    if ( qwsServerPrivate->mouseGrabber && (!imMouse || qwsServerPrivate->inputMethodMouseGrabbed)) {
        win = qwsServerPrivate->mouseGrabber;
        winClient = win ? win->client() : 0;
    }
    event.simpleData.window = win ? win->id : 0;

#ifndef QT_NO_QWS_CURSOR
    if (qt_screencursor)
        qt_screencursor->move(pos.x(),pos.y());

    // Arrow cursor over desktop
    // prevWin remembers if the last event was over a window
    if (!win && prevWin) {
        if (!qwsServerPrivate->mouseGrabber)
            qwsServerPrivate->setCursor(QWSCursor::systemCursor(Qt::ArrowCursor));
        else
            qwsServerPrivate->nextCursor = QWSCursor::systemCursor(Qt::ArrowCursor);
        prevWin = false;
    }
    // reset prevWin
    if (win && !prevWin)
        prevWin = true;
#endif

    if ((state&btnMask) && !qwsServerPrivate->mouseGrabbing) {
        qwsServerPrivate->mouseGrabber = win;
        if (imMouse)
            qwsServerPrivate->inputMethodMouseGrabbed = true;
    }
    if (!(state&btnMask))
        qwsServerPrivate->inputMethodMouseGrabbed = false;

    event.simpleData.x_root=pos.x();
    event.simpleData.y_root=pos.y();
    event.simpleData.state=state | qws_keyModifiers;
    event.simpleData.delta = wheel;
    event.simpleData.time=qwsServerPrivate->timer.elapsed();

    static int oldstate = 0;

#ifndef QT_NO_QWS_INPUTMETHODS
    //tell the input method if we click on a different window that is not IM transparent
    bool isPress = state > oldstate;
    if (isPress && !imMouse && current_IM && current_IM_winId != -1)
        current_IM->mouseHandler(-1, QWSServer::MouseOutside);
#endif

    if (serverClient)
       serverClient->sendEvent(&event);
    if (winClient && winClient != serverClient)
       winClient->sendEvent(&event);

    if ( !imMouse ) {
        // Make sure that if we leave a window, that window gets one last mouse
        // event so that it knows the mouse has left.
        QWSClient *oldClient = qwsServer->d_func()->cursorClient;
        if (oldClient && oldClient != winClient && oldClient != serverClient) {
            event.simpleData.state = oldstate | qws_keyModifiers;
            oldClient->sendEvent(&event);
        }
    }

    oldstate = state;
    if ( !imMouse )
        qwsServer->d_func()->cursorClient = winClient;

    if (!(state&btnMask) && !qwsServerPrivate->mouseGrabbing)
        qwsServerPrivate->releaseMouse(qwsServerPrivate->mouseGrabber);
}

QWSMouseHandler *QWSServer::mouseHandler()
{
    if (qwsServerPrivate->mousehandlers.empty())
        return 0;
    return qwsServerPrivate->mousehandlers.first();
}

const QList<QWSMouseHandler*>& QWSServer::mouseHandlers()
{
    return qwsServerPrivate->mousehandlers;
}


// called by QWSMouseHandler constructor, not user code.
void QWSServer::setMouseHandler(QWSMouseHandler* mh)
{
    if (!mh)
        return;
    qwsServerPrivate->mousehandlers.removeAll(mh);
    qwsServerPrivate->mousehandlers.prepend(mh);
}

QList<QWSInternalWindowInfo*> * QWSServer::windowList()
{
    QList<QWSInternalWindowInfo*> * ret=new QList<QWSInternalWindowInfo*>;
    for (int i=0; i < qwsServerPrivate->windows.size(); ++i) {
        QWSWindow *window = qwsServerPrivate->windows.at(i);
        QWSInternalWindowInfo * qwi=new QWSInternalWindowInfo();
        qwi->winid=window->winId();
        qwi->clientid=window->client()->clientId();
        ret->append(qwi);
    }
    return ret;
}

#ifndef QT_NO_COP

void QWSServerPrivate::sendQCopEvent(QWSClient *c, const QString &ch,
                               const QString &msg, const QByteArray &data,
                               bool response)
{
    Q_ASSERT(c);

    QWSQCopMessageEvent event;
    event.channel = ch.toLatin1();
    event.message = msg.toLatin1();
    event.data = data;
    event.simpleData.is_response = response;
    event.simpleData.lchannel = ch.length();
    event.simpleData.lmessage = msg.length();
    event.simpleData.ldata = data.size();
    int l = event.simpleData.lchannel + event.simpleData.lmessage +
            event.simpleData.ldata;

    // combine channel, message and data into one block of raw bytes
    char *tmp = new char [l];
    char *d = tmp;
    memcpy(d, event.channel.constData(), event.simpleData.lchannel);
    d += event.simpleData.lchannel;
    memcpy(d, event.message.constData(), event.simpleData.lmessage);
    d += event.simpleData.lmessage;
    memcpy(d, data.constData(), event.simpleData.ldata);

    event.setDataDirect(tmp, l);

    c->sendEvent(&event);
}
#endif

QWSWindow *QWSServer::windowAt(const QPoint& pos)
{
    Q_D(QWSServer);
    for (int i=0; i<d->windows.size(); ++i) {
        QWSWindow* w = d->windows.at(i);
        if (w->allocatedRegion().contains(pos))
            return w;
    }
    return 0;
}

#ifndef QT_NO_QWS_KEYBOARD
static inline int keyUnicode(int keycode)
{
    int code = 0xffff;

    if (keycode >= Qt::Key_A && keycode <= Qt::Key_Z)
        code = keycode - Qt::Key_A + 'a';
    else if (keycode >= Qt::Key_0 && keycode <= Qt::Key_9)
        code = keycode - Qt::Key_0 + '0';

    return code;
}
#endif

void QWSServer::sendKeyEvent(int unicode, int keycode, Qt::KeyboardModifiers modifiers,
                             bool isPress, bool autoRepeat)
{
    qws_keyModifiers = modifiers;

    if (isPress) {
        if (keycode != Qt::Key_F34 && keycode != Qt::Key_F35)
            qwsServerPrivate->_q_screenSaverWake();
    }

#ifndef QT_NO_QWS_INPUTMETHODS

    if (!current_IM || !current_IM->filter(unicode, keycode, modifiers, isPress, autoRepeat))
        QWSServerPrivate::sendKeyEventUnfiltered(unicode, keycode, modifiers, isPress, autoRepeat);
#else
    QWSServerPrivate::sendKeyEventUnfiltered(unicode, keycode, modifiers, isPress, autoRepeat);
#endif
}

void QWSServerPrivate::sendKeyEventUnfiltered(int unicode, int keycode, Qt::KeyboardModifiers modifiers,
                                       bool isPress, bool autoRepeat)
{
    QWSWindow *win = keyboardGrabber ? keyboardGrabber : qwsServerPrivate->focusw;

#ifndef QT_NO_QWS_KEYBOARD
    if (unicode < 0)
        unicode = keyUnicode(keycode);
#endif

    QWSKeyEvent event;
    event.simpleData.window = win ? win->winId() : 0;
    event.simpleData.unicode = unicode;
    event.simpleData.keycode = keycode;
    event.simpleData.modifiers = modifiers;
    event.simpleData.is_press = isPress;
    event.simpleData.is_auto_repeat = autoRepeat;

    QWSClient *serverClient = qwsServerPrivate->clientMap.value(-1);
    QWSClient *winClient = win ? win->client() : 0;
    if (serverClient)
        serverClient->sendEvent(&event);
    if (winClient && winClient != serverClient)
        winClient->sendEvent(&event);
}

void QWSServer::beginDisplayReconfigure()
{
    qwsServer->enablePainting(false);
#ifndef QT_NO_QWS_CURSOR
    if (qt_screencursor)
        qt_screencursor->hide();
#endif
    QWSDisplay::grab(true);
    qt_screen->disconnect();
}

void QWSServer::endDisplayReconfigure()
{
    qt_screen->connect(QString());
    qwsServerPrivate->swidth = qt_screen->deviceWidth();
    qwsServerPrivate->sheight = qt_screen->deviceHeight();

    QWSDisplay::ungrab();
#ifndef QT_NO_QWS_CURSOR
    if (qt_screencursor)
        qt_screencursor->show();
#endif
    QApplicationPrivate *ap = QApplicationPrivate::instance();
    ap->setMaxWindowRect(qt_screen, 0,
                         QRect(0, 0, qt_screen->width(), qt_screen->height()));
    QSize olds = qApp->desktop()->size();
    qApp->desktop()->resize(qt_screen->width(), qt_screen->height());
    qApp->postEvent(qApp->desktop(), new QResizeEvent(qApp->desktop()->size(), olds));
    qwsServer->enablePainting(true);
    qwsServer->refresh();
    qDebug("Desktop size: %dx%d", qApp->desktop()->width(), qApp->desktop()->height());
}

void QWSServerPrivate::resetEngine()
{
#ifndef QT_NO_QWS_CURSOR
    if (!qt_screencursor)
        return;
    qt_screencursor->hide();
    qt_screencursor->show();
#endif
}


#ifndef QT_NO_QWS_CURSOR

void QWSServer::setCursorVisible(bool vis)
{
    if (qwsServerPrivate && qwsServerPrivate->haveviscurs != vis) {
        QWSCursor* c = qwsServerPrivate->cursor;
        qwsServerPrivate->setCursor(QWSCursor::systemCursor(Qt::BlankCursor));
        qwsServerPrivate->haveviscurs = vis;
        qwsServerPrivate->setCursor(c);
    }
}

bool QWSServer::isCursorVisible()
{
    return qwsServerPrivate ? qwsServerPrivate->haveviscurs : true;
}
#endif

#ifndef QT_NO_QWS_INPUTMETHODS


void QWSServer::sendIMEvent(const QInputMethodEvent *ime)
{
    QWSIMEvent event;

    QWSWindow *win = keyboardGrabber ? keyboardGrabber :
                     qwsServerPrivate->focusw;

    //if currently composing then event must go to the composing window

    if (current_IM_composing_win)
        win = current_IM_composing_win;

    event.simpleData.window = win ? win->winId() : 0;
    event.simpleData.replaceFrom = ime->replacementStart();;
    event.simpleData.replaceLength = ime->replacementLength();

    QBuffer buffer;
    buffer.open(QIODevice::WriteOnly);
    QDataStream out(&buffer);

    out << ime->preeditString();
    out << ime->commitString();

    const QList<QInputMethodEvent::Attribute> &attributes = ime->attributes();
    for (int i = 0; i < attributes.count(); ++i) {
        const QInputMethodEvent::Attribute &a = attributes.at(i);
        out << a.type << a.start << a.length << a.value;
    }
    event.setData(buffer.data(), buffer.size());
    QWSClient *serverClient = qwsServerPrivate->clientMap.value(-1);
    if (serverClient)
        serverClient->sendEvent(&event);
    if (win && win->client() && win->client() != serverClient)
        win->client()->sendEvent(&event);

    current_IM_composing_win = ime->preeditString().isEmpty() ? 0 : win;
    current_IM_winId = win ? win->winId() : 0;
}


void QWSServer::sendIMQuery(int property)
{
    QWSIMQueryEvent event;

    QWSWindow *win = keyboardGrabber ? keyboardGrabber :
                     qwsServerPrivate->focusw;
    if (current_IM_composing_win)
        win = current_IM_composing_win;

    event.simpleData.window = win ? win->winId() : 0;
    event.simpleData.property = property;
    if (win && win->client())
        win->client()->sendEvent(&event);
}



void QWSServer::setCurrentInputMethod(QWSInputMethod *im)
{
    if (current_IM)
        current_IM->reset(); //??? send an update event instead ?
    current_IM = im;
}

#endif //QT_NO_QWS_INPUTMETHODS

#ifndef QT_NO_QWS_PROPERTIES

void QWSServer::sendPropertyNotifyEvent(int property, int state)
{
    Q_D(QWSServer);
    QWSServerPrivate::ClientIterator it = d->clientMap.begin();
    while (it != d->clientMap.end()) {
        QWSClient *cl = *it;
        ++it;
        cl->sendPropertyNotifyEvent(property, state);
    }
}
#endif

void QWSServerPrivate::invokeIdentify(const QWSIdentifyCommand *cmd, QWSClient *client)
{
    client->setIdentity(cmd->id);
#ifndef QT_NO_QWS_MULTIPROCESS
    if (client->clientId() > 0)
        client->d_func()->setLockId(cmd->simpleData.idLock);
#endif
}

void QWSServerPrivate::invokeCreate(QWSCreateCommand *cmd, QWSClient *client)
{
    QWSCreationEvent event;
    event.simpleData.objectid = get_object_id(cmd->count);
    event.simpleData.count = cmd->count;
    client->sendEvent(&event);
}

void QWSServerPrivate::invokeRegionName(const QWSRegionNameCommand *cmd, QWSClient *client)
{
    Q_Q(QWSServer);
    QWSWindow* changingw = findWindow(cmd->simpleData.windowid, client);
    if (changingw && (changingw->name() != cmd->name || changingw->caption() !=cmd->caption)) {
        changingw->setName(cmd->name);
        changingw->setCaption(cmd->caption);
        emit q->windowEvent(changingw, QWSServer::Name);
    }
}

void QWSServerPrivate::invokeRegion(QWSRegionCommand *cmd, QWSClient *client)
{
#ifdef QWS_REGION_DEBUG
    qDebug("QWSServer::invokeRegion %d rects (%d)",
            cmd->simpleData.nrectangles, cmd->simpleData.windowid);
#endif

    QWSWindow* changingw = findWindow(cmd->simpleData.windowid, 0);
    if (!changingw) {
        qWarning("Invalid window handle %08x",cmd->simpleData.windowid);
        return;
    }
    if (!changingw->forClient(client)) {
        qWarning("Disabled: clients changing other client's window region");
        return;
    }

    request_region(cmd->simpleData.windowid, cmd->surfaceKey, cmd->surfaceData,
                   cmd->region);
}

void QWSServerPrivate::invokeRegionMove(const QWSRegionMoveCommand *cmd, QWSClient *client)
{
    Q_Q(QWSServer);
    QWSWindow* changingw = findWindow(cmd->simpleData.windowid, 0);
    if (!changingw) {
        qWarning("invokeRegionMove: Invalid window handle %d",cmd->simpleData.windowid);
        return;
    }
    if (!changingw->forClient(client)) {
        qWarning("Disabled: clients changing other client's window region");
        return;
    }

//    changingw->setNeedAck(true);
    moveWindowRegion(changingw, cmd->simpleData.dx, cmd->simpleData.dy);
    emit q->windowEvent(changingw, QWSServer::Geometry);
}

void QWSServerPrivate::invokeRegionDestroy(const QWSRegionDestroyCommand *cmd, QWSClient *client)
{
    Q_Q(QWSServer);
    QWSWindow* changingw = findWindow(cmd->simpleData.windowid, 0);
    if (!changingw) {
        qWarning("invokeRegionDestroy: Invalid window handle %d",cmd->simpleData.windowid);
        return;
    }
    if (!changingw->forClient(client)) {
        qWarning("Disabled: clients changing other client's window region");
        return;
    }

    setWindowRegion(changingw, QRegion());
//    rgnMan->remove(changingw->allocationIndex());
    for (int i = 0; i < windows.size(); ++i) {
        if (windows.at(i) == changingw) {
            windows.takeAt(i);
            if (i < nReserved)
                --nReserved;
            break;
        }
    }

    handleWindowClose(changingw);
#ifndef QT_NO_QWS_PROPERTIES
    propertyManager.removeProperties(changingw->winId());
#endif
    emit q->windowEvent(changingw, QWSServer::Destroy);
    delete changingw;
}

void QWSServerPrivate::invokeSetFocus(const QWSRequestFocusCommand *cmd, QWSClient *client)
{
    int winId = cmd->simpleData.windowid;
    int gain = cmd->simpleData.flag;

    if (gain != 0 && gain != 1) {
        qWarning("Only 0(lose) and 1(gain) supported");
        return;
    }

    QWSWindow* changingw = findWindow(winId, 0);
    if (!changingw)
        return;

    if (!changingw->forClient(client)) {
       qWarning("Disabled: clients changing other client's focus");
        return;
    }

    setFocus(changingw, gain);
}

void QWSServerPrivate::setFocus(QWSWindow* changingw, bool gain)
{
    Q_Q(QWSServer);
#ifndef QT_NO_QWS_INPUTMETHODS
    /*
      This is the logic:
      QWSWindow *loser = 0;
      if (gain && focusw != changingw)
         loser = focusw;
      else if (!gain && focusw == changingw)
         loser = focusw;
      But these five lines can be reduced to one:
    */
    if (current_IM) {
        QWSWindow *loser =  (!gain == (focusw==changingw)) ? focusw : 0;
        if (loser && loser->winId() == current_IM_winId)
            current_IM->updateHandler(QWSInputMethod::FocusOut);
    }
#endif
    if (gain) {
        if (focusw != changingw) {
            if (focusw) focusw->focus(0);
            focusw = changingw;
            focusw->focus(1);
            emit q->windowEvent(focusw, QWSServer::Active);
        }
    } else if (focusw == changingw) {
        if (changingw->client())
            changingw->focus(0);
        focusw = 0;
        // pass focus to window which most recently got it...
        QWSWindow* bestw=0;
        for (int i=0; i<windows.size(); ++i) {
            QWSWindow* w = windows.at(i);
            if (w != changingw && !w->hidden() &&
                    (!bestw || bestw->focusPriority() < w->focusPriority()))
                bestw = w;
        }
        if (!bestw && changingw->focusPriority()) { // accept focus back?
            bestw = changingw; // must be the only one
        }
        focusw = bestw;
        if (focusw) {
            focusw->focus(1);
            emit q->windowEvent(focusw, QWSServer::Active);
        }
    }
}



void QWSServerPrivate::invokeSetOpacity(const QWSSetOpacityCommand *cmd, QWSClient *client)
{
    Q_UNUSED( client );
    int winId = cmd->simpleData.windowid;
    int opacity = cmd->simpleData.opacity;

    QWSWindow* changingw = findWindow(winId, 0);

    if (!changingw) {
        qWarning("invokeSetOpacity: Invalid window handle %d", winId);
        return;
    }

    int altitude = windows.indexOf(changingw);
    const bool wasOpaque = changingw->isOpaque();
    changingw->_opacity = opacity;
    if (wasOpaque != changingw->isOpaque())
        update_regions();
    exposeRegion(changingw->allocatedRegion(), altitude);
}

void QWSServerPrivate::invokeSetAltitude(const QWSChangeAltitudeCommand *cmd,
                                   QWSClient *client)
{
    Q_UNUSED(client);

    int winId = cmd->simpleData.windowid;
    int alt = cmd->simpleData.altitude;
    bool fixed = cmd->simpleData.fixed;
#if 0
    qDebug("QWSServer::invokeSetAltitude winId %d alt %d)", winId, alt);
#endif

    if (alt < -1 || alt > 1) {
        qWarning("QWSServer::invokeSetAltitude Only lower, raise and stays-on-top supported");
        return;
    }

    QWSWindow* changingw = findWindow(winId, 0);
    if (!changingw) {
        qWarning("invokeSetAltitude: Invalid window handle %d", winId);
        return;
    }

    if (fixed && alt >= 1) {
        changingw->onTop = true;
    }
    if (alt == QWSChangeAltitudeCommand::Lower)
        changingw->lower();
    else
        changingw->raise();

//      if (!changingw->forClient(client)) {
//         refresh();
//     }
}

#ifndef QT_NO_QWS_PROPERTIES
void QWSServerPrivate::invokeAddProperty(QWSAddPropertyCommand *cmd)
{
    propertyManager.addProperty(cmd->simpleData.windowid, cmd->simpleData.property);
}

void QWSServerPrivate::invokeSetProperty(QWSSetPropertyCommand *cmd)
{
    Q_Q(QWSServer);
    if (propertyManager.setProperty(cmd->simpleData.windowid,
                                    cmd->simpleData.property,
                                    cmd->simpleData.mode,
                                    cmd->data,
                                    cmd->rawLen)) {
        q->sendPropertyNotifyEvent(cmd->simpleData.property,
                                 QWSPropertyNotifyEvent::PropertyNewValue);
#ifndef QT_NO_QWS_INPUTMETHODS
        if (cmd->simpleData.property == QT_QWS_PROPERTY_MARKEDTEXT) {
            QString s((const QChar*)cmd->data, cmd->rawLen/2);
            emit q->markedText(s);
        }
#endif
    }
}

void QWSServerPrivate::invokeRemoveProperty(QWSRemovePropertyCommand *cmd)
{
    Q_Q(QWSServer);
    if (propertyManager.removeProperty(cmd->simpleData.windowid,
                                       cmd->simpleData.property)) {
        q->sendPropertyNotifyEvent(cmd->simpleData.property,
                                 QWSPropertyNotifyEvent::PropertyDeleted);
    }
}


bool QWSServerPrivate:: get_property(int winId, int property, const char *&data, int &len)
{
    return propertyManager.getProperty(winId, property, data, len);
}


void QWSServerPrivate::invokeGetProperty(QWSGetPropertyCommand *cmd, QWSClient *client)
{
    const char *data;
    int len;

    if (propertyManager.getProperty(cmd->simpleData.windowid,
                                    cmd->simpleData.property,
                                    data, len)) {
        client->sendPropertyReplyEvent(cmd->simpleData.property, len, data);
    } else {
        client->sendPropertyReplyEvent(cmd->simpleData.property, -1, 0);
    }
}
#endif //QT_NO_QWS_PROPERTIES

void QWSServerPrivate::invokeSetSelectionOwner(QWSSetSelectionOwnerCommand *cmd)
{
    qDebug("QWSServer::invokeSetSelectionOwner");

    SelectionOwner so;
    so.windowid = cmd->simpleData.windowid;
    so.time.set(cmd->simpleData.hour, cmd->simpleData.minute,
                 cmd->simpleData.sec, cmd->simpleData.ms);

    if (selectionOwner.windowid != -1) {
        QWSWindow *win = findWindow(selectionOwner.windowid, 0);
        if (win)
            win->client()->sendSelectionClearEvent(selectionOwner.windowid);
        else
            qDebug("couldn't find window %d", selectionOwner.windowid);
    }

    selectionOwner = so;
}

void QWSServerPrivate::invokeConvertSelection(QWSConvertSelectionCommand *cmd)
{
    qDebug("QWSServer::invokeConvertSelection");

    if (selectionOwner.windowid != -1) {
        QWSWindow *win = findWindow(selectionOwner.windowid, 0);
        if (win)
            win->client()->sendSelectionRequestEvent(cmd, selectionOwner.windowid);
        else
            qDebug("couldn't find window %d", selectionOwner.windowid);
    }
}

#ifndef QT_NO_QWS_CURSOR
void QWSServerPrivate::invokeDefineCursor(QWSDefineCursorCommand *cmd, QWSClient *client)
{
    if (cmd->simpleData.height > 64 || cmd->simpleData.width > 64) {
        qDebug("Cannot define cursor size > 64x64");
        return;
    }

    delete client->cursors.take(cmd->simpleData.id);

    int dataLen = cmd->simpleData.height * ((cmd->simpleData.width+7) / 8);

    if (dataLen > 0 && cmd->data) {
        QWSCursor *curs = new QWSCursor(cmd->data, cmd->data + dataLen,
                                        cmd->simpleData.width, cmd->simpleData.height,
                                        cmd->simpleData.hotX, cmd->simpleData.hotY);
        client->cursors.insert(cmd->simpleData.id, curs);
    }
}

void QWSServerPrivate::invokeSelectCursor(QWSSelectCursorCommand *cmd, QWSClient *client)
{
    int id = cmd->simpleData.id;
    QWSCursor *curs = 0;
    if (id <= Qt::LastCursor) {
        curs = QWSCursor::systemCursor(id);
    }
    else {
        QWSCursorMap cursMap = client->cursors;
        QWSCursorMap::Iterator it = cursMap.find(id);
        if (it != cursMap.end()) {
            curs = it.value();
        }
    }
    if (curs == 0) {
        curs = QWSCursor::systemCursor(Qt::ArrowCursor);
    }

    QWSWindow* win = findWindow(cmd->simpleData.windowid, 0);
    if (mouseGrabber) {
        // If the mouse is being grabbed, we don't want just anyone to
        // be able to change the cursor.  We do want the cursor to be set
        // correctly once mouse grabbing is stopped though.
        if (win != mouseGrabber)
            nextCursor = curs;
        else
            setCursor(curs);
    } else if (win && win->allocatedRegion().contains(QWSServer::mousePosition)) { //##################### cursor
        // A non-grabbing window can only set the cursor shape if the
        // cursor is within its allocated region.
        setCursor(curs);
    }
}

void QWSServerPrivate::invokePositionCursor(QWSPositionCursorCommand *cmd, QWSClient *)
{
    Q_Q(QWSServer);
    QPoint newPos(cmd->simpleData.newX, cmd->simpleData.newY);
    if (newPos != QWSServer::mousePosition)
        q->sendMouseEvent(newPos, qwsServer->d_func()->mouseState);
}
#endif

void QWSServerPrivate::invokeGrabMouse(QWSGrabMouseCommand *cmd, QWSClient *client)
{
    QWSWindow* win = findWindow(cmd->simpleData.windowid, 0);
    if (!win)
        return;

    if (cmd->simpleData.grab) {
        if (!mouseGrabber || mouseGrabber->client() == client) {
            mouseGrabbing = true;
            mouseGrabber = win;
        }
    } else {
        releaseMouse(mouseGrabber);
    }
}

void QWSServerPrivate::invokeGrabKeyboard(QWSGrabKeyboardCommand *cmd, QWSClient *client)
{
    QWSWindow* win = findWindow(cmd->simpleData.windowid, 0);
    if (!win)
        return;

    if (cmd->simpleData.grab) {
        if (!keyboardGrabber || (keyboardGrabber->client() == client)) {
            keyboardGrabbing = true;
            keyboardGrabber = win;
        }
    } else {
        releaseKeyboard(keyboardGrabber);
    }
}

#if !defined(QT_NO_SOUND)
void QWSServerPrivate::invokePlaySound(QWSPlaySoundCommand *cmd, QWSClient *)
{
#if !defined(QT_EXTERNAL_SOUND_SERVER) && !defined(Q_OS_DARWIN)
    soundserver->playFile( 1, cmd->filename );
#else
    Q_UNUSED(cmd);
#endif
}
#endif

#ifndef QT_NO_COP
void QWSServerPrivate::invokeRegisterChannel(QWSQCopRegisterChannelCommand *cmd,
                                       QWSClient *client)
{
  // QCopChannel will force us to emit the newChannel signal if this channel
  // didn't already exist.
  QCopChannel::registerChannel(cmd->channel, client);
}

void QWSServerPrivate::invokeQCopSend(QWSQCopSendCommand *cmd, QWSClient *client)
{
    QCopChannel::answer(client, cmd->channel, cmd->message, cmd->data);
}

#endif

#ifndef QT_NO_QWS_INPUTMETHODS
void QWSServer::resetInputMethod()
{
    if (current_IM && qwsServer) {
      current_IM->reset();
    }
}

void QWSServerPrivate::invokeIMResponse(const QWSIMResponseCommand *cmd,
                                 QWSClient *)
{
    if (current_IM)
        current_IM->queryResponse(cmd->simpleData.property, cmd->result);
}

void QWSServerPrivate::invokeIMUpdate(const QWSIMUpdateCommand *cmd,
                                 QWSClient *)
{
    if (cmd->simpleData.type == QWSInputMethod::FocusIn)
        current_IM_winId = cmd->simpleData.windowid;

    if (current_IM && (current_IM_winId == cmd->simpleData.windowid || cmd->simpleData.windowid == -1))
        current_IM->updateHandler(cmd->simpleData.type);
}

#endif

void QWSServerPrivate::invokeFont(const QWSFontCommand *cmd, QWSClient *client)
{
    QWSClientPrivate *priv = client->d_func();
    if (cmd->simpleData.type == QWSFontCommand::StartedUsingFont) {
        referenceFont(priv, cmd->fontName);
    } else if (cmd->simpleData.type == QWSFontCommand::StoppedUsingFont) {
        dereferenceFont(priv, cmd->fontName);
    }
}

void QWSServerPrivate::invokeRepaintRegion(QWSRepaintRegionCommand * cmd,
                                           QWSClient *)
{
    QRegion r;
    r.setRects(cmd->rectangles,cmd->simpleData.nrectangles);
    repaint_region(cmd->simpleData.windowid, cmd->simpleData.windowFlags, cmd->simpleData.opaque, r);
}

#ifndef QT_NO_QWSEMBEDWIDGET
void QWSServerPrivate::invokeEmbed(QWSEmbedCommand *cmd, QWSClient *client)
{
    // Should find these two windows in a single loop
    QWSWindow *embedder = findWindow(cmd->simpleData.embedder, client);
    QWSWindow *embedded = findWindow(cmd->simpleData.embedded);

    if (!embedder) {
        qWarning("QWSServer: Embed command from window %i failed: No such id.",
                 static_cast<int>(cmd->simpleData.embedder));
        return;
    }

    if (!embedded) {
        qWarning("QWSServer: Embed command on window %i failed: No such id.",
                 static_cast<int>(cmd->simpleData.embedded));
        return;
    }

    switch (cmd->simpleData.type) {
    case QWSEmbedEvent::StartEmbed:
        embedder->startEmbed(embedded);
        windows.removeAll(embedded);
        windows.insert(windows.indexOf(embedder), embedded);
        break;
    case QWSEmbedEvent::StopEmbed:
        embedder->stopEmbed(embedded);
        break;
    case QWSEmbedEvent::Region:
        break;
    }

    embedded->client()->sendEmbedEvent(embedded->winId(),
                                       cmd->simpleData.type, cmd->region);
    const QRegion oldAllocated = embedded->allocatedRegion();
    update_regions();
    exposeRegion(oldAllocated - embedded->allocatedRegion(),
                 windows.indexOf(embedded));
}
#endif // QT_NO_QWSEMBEDWIDGET

void QWSServerPrivate::invokeScreenTransform(const QWSScreenTransformCommand *cmd,
                                             QWSClient *client)
{
    Q_UNUSED(client);

    QWSScreenTransformationEvent event;
    event.simpleData.screen = cmd->simpleData.screen;
    event.simpleData.transformation = cmd->simpleData.transformation;

    QMap<int, QWSClient*>::const_iterator it = clientMap.constBegin();
    for (; it != clientMap.constEnd(); ++it)
        (*it)->sendEvent(&event);
}

QWSWindow* QWSServerPrivate::newWindow(int id, QWSClient* client)
{
    Q_Q(QWSServer);
    // Make a new window, put it on top.
    QWSWindow* w = new QWSWindow(id,client);

    // insert after "stays on top" windows
    bool added = false;
    for (int i = nReserved; i < windows.size(); ++i) {
        QWSWindow *win = windows.at(i);
        if (!win->onTop) {
            windows.insert(i, w);
            added = true;
            break;
        }
    }
    if (!added)
        windows.append(w);
    emit q->windowEvent(w, QWSServer::Create);
    return w;
}

QWSWindow* QWSServerPrivate::findWindow(int windowid, QWSClient* client)
{
    for (int i=0; i<windows.size(); ++i) {
        QWSWindow* w = windows.at(i);
        if (w->winId() == windowid)
            return w;
    }
    if (client)
        return newWindow(windowid,client);
    else
        return 0;
}

void QWSServerPrivate::raiseWindow(QWSWindow *changingw, int /*alt*/)
{
    Q_Q(QWSServer);
    if (changingw == windows.first())
        return;
    QWSWindow::State oldstate = changingw->d->state;
    changingw->d->state = QWSWindow::Raising;
    // Expose regions previously overlapped by transparent windows
    const QRegion bound = changingw->allocatedRegion();
    QRegion expose;
    int windowPos = 0;

    //change position in list:
    for (int i = 0; i < windows.size(); ++i) {
        QWSWindow *w = windows.at(i);
        if (w == changingw) {
            windowPos = i;
            windows.takeAt(i);
            break;
        }
        if (!w->isOpaque())
            expose += (w->allocatedRegion() & bound);
    }

    bool onTop = changingw->onTop;

#ifndef QT_NO_QWSEMBEDWIDGET
    // an embedded window is on top if the embedder is on top
    QWSWindow *embedder = changingw->d->embedder;
    while (!onTop && embedder) {
        onTop = embedder->onTop;
        embedder = embedder->d->embedder;
    }
#endif

    int newPos = -1;
    if (onTop) {
        windows.insert(nReserved, changingw);
        newPos = nReserved;
    } else {
        // insert after "stays on top" windows
        bool in = false;
        for (int i = nReserved; i < windows.size(); ++i) {
            QWSWindow *w = windows.at(i);
            if (!w->onTop) {
                windows.insert(i, changingw);
                in = true;
                newPos = i;
                break;
            }
        }
        if (!in) {
            windows.append(changingw);
            newPos = windows.size()-1;
        }
    }

    if (windowPos != newPos) {
        update_regions();
        if (!expose.isEmpty())
            exposeRegion(expose, newPos);
    }
    changingw->d->state = oldstate;
    emit q->windowEvent(changingw, QWSServer::Raise);
}

void QWSServerPrivate::lowerWindow(QWSWindow *changingw, int /*alt*/)
{
    Q_Q(QWSServer);
    if (changingw == windows.last())
        return;
    QWSWindow::State oldstate = changingw->d->state;
    changingw->d->state = QWSWindow::Lowering;

    int i = windows.indexOf(changingw);
    int newIdx = windows.size()-1;
    windows.move(i, newIdx);

    const QRegion bound = changingw->allocatedRegion();

    update_regions();

    // Expose regions previously overlapped by transparent window
    if (!changingw->isOpaque()) {
        QRegion expose;
        for (int j = i; j < windows.size() - 1; ++j)
            expose += (windows.at(j)->allocatedRegion() & bound);
        if (!expose.isEmpty())
            exposeRegion(expose, newIdx);
    }

    changingw->d->state = oldstate;
    emit q->windowEvent(changingw, QWSServer::Lower);
}

void QWSServerPrivate::update_regions()
{
    if (disablePainting)
        return;

    QRegion available = QRect(0, 0, qt_screen->width(), qt_screen->height());
    QRegion transparentRegion;

    // only really needed if there are unbuffered surfaces...
    const bool doLock = (clientMap.size() > 1);
    if (doLock)
        QWSDisplay::grab(true);

    for (int i = 0; i < windows.count(); ++i) {
        QWSWindow *w = windows.at(i);
        QRegion r = (w->requested_region & available);

#ifndef QT_NO_QWSEMBEDWIDGET
        // Subtract regions needed for embedded windows
        const int n = w->d->embedded.size();
        for (int i = 0; i < n; ++i)
            r -= w->d->embedded.at(i)->allocatedRegion();

        // Limited to the embedder region
        if (w->d->embedder)
            r &= w->d->embedder->requested_region;
#endif // QT_NO_QWSEMBEDWIDGET

        QWSWindowSurface *surface = w->windowSurface();
        const bool opaque = w->isOpaque()
                            && (w->d->painted || !surface || !surface->isBuffered());

        if (!opaque) {
            transparentRegion += r;
        } else {
            if (surface && (surface->isRegionReserved() || !surface->isBuffered()))
                r -= transparentRegion;
            available -= r;
        }

        if (r != w->allocatedRegion()) {
            w->setAllocatedRegion(r);
            w->client()->sendRegionEvent(w->winId(), r,
                                         QWSRegionEvent::Allocation);
        }

#ifdef QT_QWS_CLIENTBLIT
#ifdef QT_NO_QWS_CURSOR
        // This optimization only really works when there isn't a crazy cursor
        // wizzing around.
        QRegion directPaint = (r - transparentRegion); // in gloal coords
        if(directPaint != w->directPaintRegion()) {
            w->setDirectPaintRegion(directPaint);
            static int id = 0;
            surface->setDirectRegion(directPaint, ++id);
            w->client()->sendRegionEvent(w->winId(), directPaint,
                                         QWSRegionEvent::DirectPaint, id);
        }
#endif
#endif
    }

    if (doLock)
        QWSDisplay::ungrab();
}

void QWSServerPrivate::moveWindowRegion(QWSWindow *changingw, int dx, int dy)
{
    if (!changingw)
        return;

    QWSWindow::State oldState = changingw->d->state;
    changingw->d->state = QWSWindow::Moving;
    const QRegion oldRegion(changingw->allocatedRegion());
    changingw->requested_region.translate(dx, dy);

    // hw: Even if the allocated region doesn't change, the requested region
    // region has changed and we need to send region events.
    // Resetting the allocated region to force update_regions to send events.
    changingw->setAllocatedRegion(QRegion());
    update_regions();
    const QRegion newRegion(changingw->allocatedRegion());

    QWSWindowSurface *surface = changingw->windowSurface();
    QRegion expose;
    if (surface)
        expose = surface->move(QPoint(dx, dy), changingw->allocatedRegion());
    else
        expose = oldRegion + newRegion;

    if (!changingw->d->painted && !expose.isEmpty())
        expose = oldRegion - newRegion;

    int idx = windows.indexOf(changingw);
    exposeRegion(expose, idx);
    changingw->d->state = oldState;
}

void QWSServerPrivate::setWindowRegion(QWSWindow* changingw, const QRegion &r)
{
    if (!changingw) {
        qWarning("Not implemented in this release");
        return;
    }

    if (changingw->requested_region == r)
        return;

    const QRegion oldRegion(changingw->allocatedRegion());
    changingw->requested_region = r;
    update_regions();
    const QRegion newRegion(changingw->allocatedRegion());

    int idx = windows.indexOf(changingw);
    exposeRegion(oldRegion - newRegion, idx);
}


void QWSServerPrivate::exposeRegion(const QRegion &r, int changing)
{
    if (disablePainting)
        return;

    if (r.isEmpty())
        return;

    static bool initial = true;
    if (initial) {
        changing = 0;
        initial = false;
        qt_screen->exposeRegion(qt_screen->region(), changing);
    } else {
        qt_screen->exposeRegion(r, changing);
    }
}

void QWSServer::closeMouse()
{
    Q_D(QWSServer);
    qDeleteAll(d->mousehandlers);
    d->mousehandlers.clear();
}

void QWSServer::openMouse()
{
    Q_D(QWSServer);
    QString mice = QString::fromLatin1(qgetenv("QWS_MOUSE_PROTO"));
#if defined(QT_QWS_CASSIOPEIA)
    if (mice.isEmpty())
        mice = QLatin1String("TPanel:/dev/tpanel");
#endif
    if (mice.isEmpty())
        mice = *defaultMouse();
    closeMouse();
    bool needviscurs = true;
    if (mice != QLatin1String("None")) {
        const QStringList mouse = mice.split(QLatin1Char(' '));
        for (int i = mouse.size() - 1; i >= 0; --i) {
            QWSMouseHandler *handler = d->newMouseHandler(mouse.at(i));
            setMouseHandler(handler);
            /* XXX handle mouse cursor visibility sensibly
               if (!h->inherits("QCalibratedMouseHandler"))
               needviscurs = true;
            */
        }
    }
#ifndef QT_NO_QWS_CURSOR
    setCursorVisible(needviscurs);
#else
    Q_UNUSED(needviscurs)
#endif
}

void QWSServer::suspendMouse()
{
    Q_D(QWSServer);
    for (int i=0; i < d->mousehandlers.size(); ++i)
        d->mousehandlers.at(i)->suspend();
}

void QWSServer::resumeMouse()
{
    Q_D(QWSServer);
    for (int i=0; i < d->mousehandlers.size(); ++i)
        d->mousehandlers.at(i)->resume();
}



QWSMouseHandler* QWSServerPrivate::newMouseHandler(const QString& spec)
{
    int c = spec.indexOf(QLatin1Char(':'));
    QString mouseProto;
    QString mouseDev;
    if (c >= 0) {
        mouseProto = spec.left(c);
        mouseDev = spec.mid(c+1);
    } else {
        mouseProto = spec;
    }

    int screen = -1;
    const QList<QRegExp> regexps = QList<QRegExp>()
                                   << QRegExp(QLatin1String(":screen=(\\d+)\\b"))
                                   << QRegExp(QLatin1String("\\bscreen=(\\d+):"));
    for (int i = 0; i < regexps.size(); ++i) {
        QRegExp regexp = regexps.at(i);
        if (regexp.indexIn(mouseDev) == -1)
            continue;
        screen = regexp.cap(1).toInt();
        mouseDev.remove(regexp.pos(0), regexp.matchedLength());
        break;
    }

    QWSMouseHandler *handler = 0;
    handler = QMouseDriverFactory::create(mouseProto, mouseDev);
    if (screen != -1)
        handler->setScreen(qt_screen->subScreens().at(screen));

    return handler;
}

#ifndef QT_NO_QWS_KEYBOARD

void QWSServer::closeKeyboard()
{
    Q_D(QWSServer);
    qDeleteAll(d->keyboardhandlers);
    d->keyboardhandlers.clear();
}

QWSKeyboardHandler* QWSServer::keyboardHandler()
{
    return qwsServerPrivate->keyboardhandlers.first();
}

void QWSServer::setKeyboardHandler(QWSKeyboardHandler* kh)
{
    if (!kh)
        return;
    qwsServerPrivate->keyboardhandlers.removeAll(kh);
    qwsServerPrivate->keyboardhandlers.prepend(kh);
}

void QWSServer::openKeyboard()
{
    QString keyboards = QString::fromLatin1(qgetenv("QWS_KEYBOARD"));
#if defined(QT_QWS_CASSIOPEIA)
    if (keyboards.isEmpty())
        keyboards = QLatin1String("Buttons");
#endif
    if (keyboards.isEmpty())
        keyboards = *defaultKeyboard();

    closeKeyboard();
    if (keyboards == QLatin1String("None"))
        return;

    QString device;
    QString type;
    QStringList keyboard = keyboards.split(QLatin1Char(' '));
    for (int i = keyboard.size() - 1; i >= 0; --i) {
        const QString spec = keyboard.at(i);
        int colon=spec.indexOf(QLatin1Char(':'));
        if (colon>=0) {
            type = spec.left(colon);
            device = spec.mid(colon+1);
        } else {
            type = spec;
            device = QString();
        }
        QWSKeyboardHandler *handler = QKbdDriverFactory::create(type, device);
        setKeyboardHandler(handler);
    }
}

#endif //QT_NO_QWS_KEYBOARD

QPoint QWSServer::mousePosition;
QBrush *QWSServerPrivate::bgBrush = 0;

void QWSServerPrivate::move_region(const QWSRegionMoveCommand *cmd)
{
    QWSClient *serverClient = clientMap.value(-1);
    invokeRegionMove(cmd, serverClient);
}

void QWSServerPrivate::set_altitude(const QWSChangeAltitudeCommand *cmd)
{
    QWSClient *serverClient = clientMap.value(-1);
    invokeSetAltitude(cmd, serverClient);
}

void QWSServerPrivate::set_opacity(const QWSSetOpacityCommand *cmd)
{
    QWSClient *serverClient = clientMap.value(-1);
    invokeSetOpacity(cmd, serverClient);
}


void QWSServerPrivate::request_focus(const QWSRequestFocusCommand *cmd)
{
    invokeSetFocus(cmd, clientMap.value(-1));
}

void QWSServerPrivate::set_identity(const QWSIdentifyCommand *cmd)
{
    invokeIdentify(cmd, clientMap.value(-1));
}

void QWSServerPrivate::repaint_region(int wid, int windowFlags, bool opaque,
                                      const QRegion &region)
{
    QWSWindow* changingw = findWindow(wid, 0);
    if (!changingw) {
        return;
    }

    const bool isOpaque = changingw->opaque;
    const bool wasPainted = changingw->d->painted;
    changingw->opaque = opaque;
    changingw->d->windowFlags = QFlag(windowFlags);
    changingw->d->dirtyOnScreen |= region;
    changingw->d->painted = true;
    if (isOpaque != opaque || !wasPainted)
        update_regions();

    int level = windows.indexOf(changingw);
    exposeRegion(region, level);
    changingw->d->dirtyOnScreen = QRegion();
}

QRegion QWSServerPrivate::reserve_region(QWSWindow *win, const QRegion &region)
{
    QRegion r = region;

    int oldPos = windows.indexOf(win);
    int newPos = oldPos < nReserved ? nReserved - 1 : nReserved;
    for (int i = 0; i < nReserved; ++i) {
        if (i != oldPos) {
            QWSWindow *w = windows.at(i);
            r -= w->requested_region;
        }
    }
    windows.move(oldPos, newPos);
    nReserved = newPos + 1;

    return r;
}

void QWSServerPrivate::request_region(int wid, const QString &surfaceKey,
                                      const QByteArray &surfaceData,
                                      const QRegion &region)
{
    QWSWindow *changingw = findWindow(wid, 0);
    if (!changingw)
        return;

    Q_Q(QWSServer);
    QWSWindow::State windowState = QWSWindow::NoState;

    if (region.isEmpty()) {
        windowState = QWSWindow::Hiding;
        emit q->windowEvent(changingw, QWSServer::Hide);
    }

    const bool wasOpaque = changingw->opaque;

    QWSWindowSurface *surface = changingw->windowSurface();
    if (!surface) {
        changingw->createSurface(surfaceKey, surfaceData);
        surface = changingw->windowSurface();
    } else {
        surface->setPermanentState(surfaceData);
    }

    changingw->opaque = surface->isOpaque();

    QRegion r;
    if (surface->isRegionReserved())
        r = reserve_region(changingw, region);
    else
        r = region;

    if (!region.isEmpty())  {
        if (changingw->isVisible())
            windowState = QWSWindow::ChangingGeometry;
        else
            windowState = QWSWindow::Showing;
    }
    changingw->d->state = windowState;

    if (!r.isEmpty() && wasOpaque != changingw->opaque && surface->isBuffered())
        changingw->requested_region = QRegion(); // XXX: force update_regions

    const QRegion oldAllocated = changingw->allocatedRegion();
    setWindowRegion(changingw, r);
    if (oldAllocated == changingw->allocatedRegion()) {
        // Always send region event to the requesting window even if the
        // region didn't change. This is necessary as the client will reset
        // the clip region until an event is received.
        changingw->client()->sendRegionEvent(wid, changingw->allocatedRegion(),
                                             QWSRegionEvent::Allocation);
    }

    surface->QWindowSurface::setGeometry(r.boundingRect());

    if (windowState == QWSWindow::Showing)
        emit q->windowEvent(changingw, QWSServer::Show);
    else if (windowState == QWSWindow::ChangingGeometry)
        emit q->windowEvent(changingw, QWSServer::Geometry);
    if (windowState == QWSWindow::Hiding) {
        handleWindowClose(changingw);
        changingw->d->state = QWSWindow::Hidden;
        changingw->d->painted = false;
    } else {
        changingw->d->state = QWSWindow::Visible;
    }
}

void QWSServerPrivate::destroy_region(const QWSRegionDestroyCommand *cmd)
{
    invokeRegionDestroy(cmd, clientMap.value(-1));
}

void QWSServerPrivate::name_region(const QWSRegionNameCommand *cmd)
{
    invokeRegionName(cmd, clientMap.value(-1));
}

#ifndef QT_NO_QWS_INPUTMETHODS
void QWSServerPrivate::im_response(const QWSIMResponseCommand *cmd)
 {
     invokeIMResponse(cmd, clientMap.value(-1));
}

void QWSServerPrivate::im_update(const QWSIMUpdateCommand *cmd)
{
    invokeIMUpdate(cmd, clientMap.value(-1));
}

void QWSServerPrivate::send_im_mouse(const QWSIMMouseCommand *cmd)
{
    if (current_IM)
        current_IM->mouseHandler(cmd->simpleData.index, cmd->simpleData.state);
}
#endif

void QWSServerPrivate::openDisplay()
{
    qt_init_display();

//    rgnMan = qt_fbdpy->regionManager();
    swidth = qt_screen->deviceWidth();
    sheight = qt_screen->deviceHeight();
}

void QWSServerPrivate::closeDisplay()
{
    if (qt_screen)
        qt_screen->shutdownDevice();
}

const QBrush &QWSServer::backgroundBrush() const
{
    return *QWSServerPrivate::bgBrush;
}

void QWSServer::setBackground(const QBrush &brush)
{
    if (!QWSServerPrivate::bgBrush)
        QWSServerPrivate::bgBrush = new QBrush(brush);
    else
        *QWSServerPrivate::bgBrush = brush;
    if (!qwsServer)
        return;
    qt_screen->exposeRegion(QRect(0,0,qt_screen->width(), qt_screen->height()), 0);
}


#ifdef QT3_SUPPORT

void QWSServer::setDesktopBackground(const QImage &img)
{
    if (img.isNull())
        setBackground(Qt::NoBrush);
    else
        setBackground(QBrush(QPixmap::fromImage(img)));
}

void QWSServer::setDesktopBackground(const QColor &c)
{
    setBackground(QBrush(c));
}
#endif //QT3_SUPPORT

void QWSServer::startup(int flags)
{
    if (qwsServer)
        return;
    unlink(qws_qtePipeFilename().toLatin1().constData());
    (void)new QWSServer(flags);
}

void QWSServer::closedown()
{
    QScopedPointer<QWSServer> server(qwsServer);
    qwsServer = 0;
    QT_TRY {
        unlink(qws_qtePipeFilename().toLatin1().constData());
    } QT_CATCH(const std::bad_alloc &) {
        // ### TODO - what to do when we run out of memory
        // when calling toLatin1?
    }
}

void QWSServerPrivate::emergency_cleanup()
{
#ifndef QT_NO_QWS_KEYBOARD
    if (qwsServer)
        qwsServer->closeKeyboard();
#endif
}

#ifndef QT_NO_QWS_KEYBOARD
static QList<QWSServer::KeyboardFilter*> *keyFilters = 0;

void QWSServer::processKeyEvent(int unicode, int keycode, Qt::KeyboardModifiers modifiers,
                                bool isPress, bool autoRepeat)
{
    bool block;
    // Don't block the POWER or LIGHT keys
    if ( keycode == Qt::Key_F34 || keycode == Qt::Key_F35 )
        block = false;
    else
        block = qwsServerPrivate->screensaverblockevent(KEY, qwsServerPrivate->screensaverinterval, isPress);

#ifdef EVENT_BLOCK_DEBUG
    qDebug() << "processKeyEvent" << unicode << keycode << modifiers << isPress << autoRepeat << (block ? "block" : "pass");
#endif

    // If we press a key and it's going to be blocked, wake up the screen
    if (block) {
        if (isPress)
            qwsServerPrivate->_q_screenSaverWake();
        return;
    }

    if (keyFilters) {
        for (int i = 0; i < keyFilters->size(); ++i) {
            QWSServer::KeyboardFilter *keyFilter = keyFilters->at(i);
            if (keyFilter->filter(unicode, keycode, modifiers, isPress, autoRepeat))
                return;
        }
    }
    sendKeyEvent(unicode, keycode, modifiers, isPress, autoRepeat);
}

void QWSServer::addKeyboardFilter(KeyboardFilter *f)
{
     if (!keyFilters)
        keyFilters = new QList<QWSServer::KeyboardFilter*>;
     if (f) {
        keyFilters->prepend(f);
     }
}

/*
//#######
 We should probably obsolete the whole keyboard filter thing since
 it's not useful for input methods anyway

 We could do removeKeyboardFilter(KeyboardFilter *f), but
 the "remove and delete the filter" concept does not match "user
 remembers the pointer".
*/

void QWSServer::removeKeyboardFilter()
{
     if (!keyFilters || keyFilters->isEmpty())
         return;
     delete keyFilters->takeAt(0);
}
#endif // QT_NO_QWS_KEYBOARD

void QWSServer::setScreenSaverIntervals(int* ms)
{
    if (!qwsServerPrivate)
        return;

    delete [] qwsServerPrivate->screensaverintervals;
    if (ms) {
        int* t=ms;
        int n=0;
        while (*t++) n++;
        if (n) {
            n++; // the 0
            qwsServerPrivate->screensaverintervals = new int[n];
            memcpy(qwsServerPrivate->screensaverintervals, ms, n*sizeof(int));
        } else {
            qwsServerPrivate->screensaverintervals = 0;
        }
    } else {
        qwsServerPrivate->screensaverintervals = 0;
    }
    qwsServerPrivate->screensaverinterval = 0;

    qwsServerPrivate->screensavertimer->stop();
    qt_screen->blank(false);
    qwsServerPrivate->_q_screenSaverWake();
}

void QWSServer::setScreenSaverInterval(int ms)
{
    int v[2];
    v[0] = ms;
    v[1] = 0;
    setScreenSaverIntervals(v);
}

void QWSServer::setScreenSaverBlockLevel(int eventBlockLevel)
{
    if (!qwsServerPrivate)
        return;
    qwsServerPrivate->screensavereventblocklevel = eventBlockLevel;
#ifdef EVENT_BLOCK_DEBUG
    qDebug() << "QWSServer::setScreenSaverBlockLevel() " << eventBlockLevel;
#endif
}

extern bool qt_disable_lowpriority_timers; //in qeventloop_unix.cpp

void QWSServerPrivate::_q_screenSaverWake()
{
    if (screensaverintervals) {
        if (screensaverinterval != screensaverintervals) {
            if (saver) saver->restore();
            screensaverinterval = screensaverintervals;
            screensaverblockevents = false;
        } else {
            if (!screensavertimer->isActive()) {
                qt_screen->blank(false);
                if (saver) saver->restore();
            }
        }
        screensavertimer->start(*screensaverinterval);
        screensavertime.start();
    }
    qt_disable_lowpriority_timers=false;
}

void QWSServerPrivate::_q_screenSaverSleep()
{
    qt_screen->blank(true);
#if !defined(QT_QWS_IPAQ) && !defined(QT_QWS_EBX)
    screensavertimer->stop();
#else
    if (screensaverinterval) {
        screensavertimer->start(*screensaverinterval);
        screensavertime.start();
    } else {
        screensavertimer->stop();
    }
#endif
    qt_disable_lowpriority_timers=true;
}

void QWSServer::setScreenSaver(QWSScreenSaver* ss)
{
    QWSServerPrivate *qd = qwsServer->d_func();
    delete qd->saver;
    qd->saver = ss;
}

void QWSServerPrivate::screenSave(int level)
{
    if (saver) {
        // saver->save() may call QCoreApplication::processEvents,
        // block event before calling saver->save().
        bool oldScreensaverblockevents = screensaverblockevents;
        if (*screensaverinterval >= 1000) {
            screensaverblockevents = (screensavereventblocklevel >= 0 && screensavereventblocklevel <= level);
#ifdef EVENT_BLOCK_DEBUG
            if (screensaverblockevents)
                qDebug("ready to block events");
#endif
        }
        int *oldScreensaverinterval = screensaverinterval;
        if (saver->save(level)) {
            // only update screensaverinterval if it hasn't already changed
            if (oldScreensaverinterval == screensaverinterval) {
                if (screensaverinterval && screensaverinterval[1]) {
                    screensavertimer->start(*++screensaverinterval);
                    screensavertime.start();
                } else {
                    screensaverinterval = 0;
                }
            }
        } else {
            // restore previous state
            screensaverblockevents = oldScreensaverblockevents;

            // for some reason, the saver don't want us to change to the
            // next level, so we'll stay at this level for another interval
            if (screensaverinterval && *screensaverinterval) {
                screensavertimer->start(*screensaverinterval);
                screensavertime.start();
            }
        }
    } else {
        screensaverinterval = 0;//screensaverintervals;
        screensaverblockevents = false;
        _q_screenSaverSleep();
    }
}

void QWSServerPrivate::_q_screenSaverTimeout()
{
    if (screensaverinterval) {
        if (screensavertime.elapsed() > *screensaverinterval*2) {
            // bogus (eg. unsuspend, system time changed)
            _q_screenSaverWake(); // try again
            return;
        }
        screenSave(screensaverinterval - screensaverintervals);
    }
}

bool QWSServer::screenSaverActive()
{
    return qwsServerPrivate->screensaverinterval
        && !qwsServerPrivate->screensavertimer->isActive();
}

void QWSServer::updateWindowRegions() const
{
    qwsServerPrivate->update_regions();
}

void QWSServer::screenSaverActivate(bool activate)
{
    if (activate)
        qwsServerPrivate->_q_screenSaverSleep();
    else
        qwsServerPrivate->_q_screenSaverWake();
}

void QWSServerPrivate::disconnectClient(QWSClient *c)
{
    QTimer::singleShot(0, c, SLOT(closeHandler()));
}

void QWSServerPrivate::updateClientCursorPos()
{
    Q_Q(QWSServer);
    QWSWindow *win = qwsServerPrivate->mouseGrabber ? qwsServerPrivate->mouseGrabber : qwsServer->windowAt(QWSServer::mousePosition);
    QWSClient *winClient = win ? win->client() : 0;
    if (winClient && winClient != cursorClient)
        q->sendMouseEvent(QWSServer::mousePosition, mouseState);
}

#ifndef QT_NO_QWS_INPUTMETHODS

QWSInputMethod::QWSInputMethod()
{

}

QWSInputMethod::~QWSInputMethod()
{
    if (current_IM == this)
        current_IM = 0;
}

bool QWSInputMethod::filter(int unicode, int keycode, int modifiers, bool isPress, bool autoRepeat)
{
    Q_UNUSED(unicode);
    Q_UNUSED(keycode);
    Q_UNUSED(modifiers);
    Q_UNUSED(isPress);
    Q_UNUSED(autoRepeat);
    return false;
}

bool QWSInputMethod::filter(const QPoint &position, int state, int wheel)
{
    Q_UNUSED(position);
    Q_UNUSED(state);
    Q_UNUSED(wheel);
    return false;
}

void QWSInputMethod::reset()
{
    if (current_IM_composing_win) {
        QInputMethodEvent ime;
        sendEvent(&ime);
    }
}

void QWSInputMethod::updateHandler(int type)
{
    switch (type) {
    case FocusOut:
    case Reset:
        reset();
        break;

    default:
        break;
    }
}


void QWSInputMethod::queryResponse(int property, const QVariant &result)
{
    Q_UNUSED(property);
    Q_UNUSED(result);
}



void QWSInputMethod::mouseHandler(int, int state)
{
    if (state == QWSServer::MousePress || state == QWSServer::MouseOutside)
        reset();
}


void QWSInputMethod::sendPreeditString(const QString &preeditString, int cursorPosition, int selectionLength)
{
    QList<QInputMethodEvent::Attribute> attributes;

    int selPos = cursorPosition;
    if (selectionLength == 0) {
        selPos = 0;
    } else if (selectionLength < 0) {
        selPos += selectionLength;
        selectionLength = -selectionLength;
    }
    if (selPos > 0)
        attributes += QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, 0, selPos,
                                                   QVariant(int(QInputContext::PreeditFormat)));

    if (selectionLength)
        attributes += QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, selPos, selectionLength,
                                                   QVariant(int(QInputContext::SelectionFormat)));

    if (selPos + selectionLength < preeditString.length())
        attributes += QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat,
                                                   selPos + selectionLength,
                                                   preeditString.length() - selPos - selectionLength,
                                                   QVariant(int(QInputContext::PreeditFormat)));

    attributes += QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, cursorPosition,  0, QVariant());

    QInputMethodEvent ime(preeditString, attributes);
    qwsServer->sendIMEvent(&ime);
}

void QWSInputMethod::sendCommitString(const QString &commitString, int replaceFrom, int replaceLength)
{
    QInputMethodEvent ime;
    ime.setCommitString(commitString, replaceFrom, replaceLength);
    qwsServer->sendIMEvent(&ime);
}

uint QWSInputMethod::setInputResolution(bool isHigh)
{
    mIResolution = isHigh;
    return inputResolutionShift();
}

uint QWSInputMethod::inputResolutionShift() const
{
    return 0; // default for devices with single resolution.
}

void QWSInputMethod::sendMouseEvent( const QPoint &pos, int state, int wheel )
{
        if (qt_last_x) {
         *qt_last_x = pos.x();
         *qt_last_y = pos.y();
    }
    QWSServer::mousePosition = pos;
    qwsServerPrivate->mouseState = state;
    QWSServerPrivate::sendMouseEventUnfiltered(pos, state, wheel);
}
#endif // QT_NO_QWS_INPUTMETHODS

QT_END_NAMESPACE

#include "moc_qwindowsystem_qws.cpp"