qwindowsystem_qws.cpp

奇趣公司比较新的qt/emd版本

    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->lower();
#endif
}

/*!
    \internal
    Shows the window.
*/
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
}

/*!
    \internal
    Hides the window.
*/
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
}

/*!
    \internal
    Make this the active window (i.e., sets the keyboard focus to this
    window).
*/
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;
}

/*!
  \internal
  Sets the window's caption to \a c.
*/
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);
    }

#ifndef QT_NO_QWSEMBEDWIDGET
    const int n = d->embedded.size();
    for (int i = 0; i < n; ++i)
        d->embedded.at(i)->focus(get);
#endif
}

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

/*!
    \internal
    Destructor.
*/
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;
}

/*!
    \internal

    Returns the region that the window is allowed to draw onto,
    including any window decorations but excluding regions covered by
    other windows.

    \sa paintedRegion(), requestedRegion()
*/
QRegion QWSWindow::allocatedRegion() const
{
    return d->allocatedRegion;
}

/*!
    \internal

    Returns the region that the window is known to have drawn into.

    \sa allocatedRegion(), requestedRegion()
*/
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
}

/*!
    \class QWSClient
    \ingroup qws

    \brief The QWSClient class encapsulates a client process in Qtopia
    Core.

    When you run a \l {Qtopia Core} application, it either runs as a
    server or connects to an existing server. The server and client
    processes have different responsibilities: The client process
    performs all application specific operations. The server process
    is responsible for managing the clients as well as taking care of
    the pointer handling, character input, and screen output. In
    addition, the server provides functionality to handle input
    methods.

    As applications add and remove windows, the server process
    maintains information about each window. In \l {Qtopia Core},
    top-level windows are encapsulated as QWSWindow objects. A list of
    the current windows can be retrieved using the
    QWSServer::clientWindows() function, and each window can tell
    which client that owns it through its QWSWindow::client()
    function.

    A QWSClient object has an unique ID that can be retrieved using
    its clientId() function. QWSClient also provides the identity()
    function which typically returns the name of this client's running
    application.

    \sa QWSServer, QWSWindow, {Qtopia Core Architecture}
*/

/*!
   \internal
*/
//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
}

/*!
   \internal
*/
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

/*!
   \internal
*/
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();
}

/*!
   \internal
*/
int QWSClient::socket() const
{
    return socketDescriptor;
}

/*!
   \internal
*/
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);
    }
}

/*!
   \internal
*/
void QWSClient::sendRegionEvent(int winid, QRegion rgn, int type)
{
#ifndef QT_NO_QWS_MULTIPROCESS
    Q_D(QWSClient);
    if (d->clientLock)
        d->clientLock->lock(QWSLock::RegionEvent);
#endif

    QWSRegionEvent event;
    event.setData(winid, rgn, type);

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

    sendEvent(&event);
#ifndef QT_NO_QWS_MULTIPROCESS
    if (d->clientLock && d->numUnbufferedSurfaces > 0)
        csocket->waitForBytesWritten(); // ### must flush to prevent deadlock
#endif
}

extern int qt_servershmid;

/*!
   \internal
*/
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);
}

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

/*!
   \internal
*/
#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);
}

/*!
   \internal
*/
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

/*!
   \internal
*/
void QWSClient::sendSelectionClearEvent(int windowid)
{
    QWSSelectionClearEvent event;
    event.simpleData.window = windowid;
    sendEvent(&event);
}

/*!
   \internal
*/
void QWSClient::sendSelectionRequestEvent(QWSConvertSelectionCommand *cmd, int windowid)
{
    QWSSelectionRequestEvent event;
    event.simpleData.window = windowid;