qwindowsystem_qws.cpp

奇趣公司比较新的qt/emd版本

    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
        }
        delete cs;
    }
}


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

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

/*!
    \fn void QWSServer::enablePainting(bool enable)

    Enables painting onto the screen if \a enable is true; otherwise
    painting is disabled.

    \sa {Qtopia Core Architecture#Drawing on Screen}{Qtopia Core
    Architecture}
*/
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());
        }
        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);
        }
        d->hideCursor();
    }
}

/*!
    Refreshes the display by making the screen driver update the
    entire display.

    \sa QScreen::exposeRegion()
*/
void QWSServer::refresh()
{
    Q_D(QWSServer);
    d->exposeRegion(QRegion(0, 0, d->swidth, d->sheight));
//### send repaint to non-buffered windows
}

/*!
    \fn void QWSServer::refresh(QRegion & region)
    \overload

    Refreshes the given \a region of the display.
*/
void QWSServer::refresh(QRegion & r)
{
    Q_D(QWSServer);
    d->exposeRegion(r);
//### send repaint to non-buffered windows
}

/*!
    \fn void QWSServer::setMaxWindowRect(const QRect& rectangle)

    Sets the maximum area of the screen that \l {Qtopia Core}
    applications can use, to be the given \a rectangle.

    Note that this function can only be used in the server process.

    \sa QWidget::showMaximized()
*/
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);
        }
    }
}

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

/*!
    \fn void QWSServer::setDefaultMouse(const char *mouseDriver)

    Sets the mouse driver that will be used if the QWS_MOUSE_PROTO
    environment variable is not defined, to be the given \a
    mouseDriver.

    Note that the default is platform-dependent. This function can
    only be used in the server process.


    \sa setMouseHandler(), {Qtopia Core Pointer Handling}
*/
void QWSServer::setDefaultMouse(const char *m)
{
    *defaultMouse() = QString::fromAscii(m);
}

/*!
    \fn void QWSServer::setDefaultKeyboard(const char *keyboardDriver)

    Sets the keyboard driver that will be used if the QWS_KEYBOARD
    environment variable is not defined, to be the given \a
    keyboardDriver.

    Note that the default is platform-dependent. This function can
    only be used in the server process.

    \sa setKeyboardHandler(), {Qtopia Core Character Input}
*/
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;


/*!
  \internal

  Send a mouse event. \a pos is the screen position where the mouse
  event occurred and \a state is a mask indicating which buttons are
  pressed.

  \a pos is in device coordinates
*/
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)
        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 ) {
        win = qwsServerPrivate->mouseGrabber;
        winClient = win ? win->client() : 0;
    }
    event.simpleData.window = win ? win->id : 0;

#ifndef QT_NO_QWS_CURSOR
    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;
    }

    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;