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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtGui module of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "qplatformdefs.h"

    43 #include "qapplication.h"

    44 #include "private/qwscommand_qws_p.h"

    45 #include "qwsdisplay_qws.h"

    46 #include "qwsevent_qws.h"

    47 #include "qwindowsystem_qws.h"

    48 #include "qeventdispatcher_qws_p.h"

    49 #include "private/qeventdispatcher_unix_p.h"

    50 #ifndef QT_NO_THREAD

    51 #  include "qmutex.h"

    52 #endif

    53 

    54 #include <errno.h>

    55 

    56 QT_BEGIN_NAMESPACE

    57 

    58 QT_USE_NAMESPACE

    59 

    60 class QEventDispatcherQWSPrivate : public QEventDispatcherUNIXPrivate

    61 {

    62     Q_DECLARE_PUBLIC(QEventDispatcherQWS)

    63 public:

    64     inline QEventDispatcherQWSPrivate()

    65     { }

    66     QList<QWSEvent*> queuedUserInputEvents;

    67 };

    68 

    69 

    70 QEventDispatcherQWS::QEventDispatcherQWS(QObject *parent)

    71     : QEventDispatcherUNIX(*new QEventDispatcherQWSPrivate, parent)

    72 { }

    73 

    74 QEventDispatcherQWS::~QEventDispatcherQWS()

    75 { }

    76 

    77 

    78 

    79 // from qapplication_qws.cpp

    80 extern QWSDisplay* qt_fbdpy; // QWS `display'

    81 

    82 //#define ZERO_FOR_THE_MOMENT

    83 

    84 bool QEventDispatcherQWS::processEvents(QEventLoop::ProcessEventsFlags flags)

    85 {

    86     Q_D(QEventDispatcherQWS);

    87     // process events from the QWS server

    88     int           nevents = 0;

    89 

    90     // handle gui and posted events

    91     d->interrupt = false;

    92     QApplication::sendPostedEvents();

    93 

    94     while (!d->interrupt) {        // also flushes output buffer ###can be optimized

    95         QWSEvent *event;

    96         if (!(flags & QEventLoop::ExcludeUserInputEvents)

    97             && !d->queuedUserInputEvents.isEmpty()) {

    98             // process a pending user input event

    99             event = d->queuedUserInputEvents.takeFirst();

   100         } else if  (qt_fbdpy->eventPending()) {

   101             event = qt_fbdpy->getEvent();        // get next event

   102              if (flags & QEventLoop::ExcludeUserInputEvents) {

   103                  // queue user input events

   104                  if (event->type == QWSEvent::Mouse || event->type == QWSEvent::Key) {

   105                       d->queuedUserInputEvents.append(event);

   106                         continue;

   107                  }

   108              }

   109         } else {

   110             break;

   111         }

   112 

   113         if (filterEvent(event)) {

   114             delete event;

   115             continue;

   116         }

   117         nevents++;

   118 

   119         bool ret = qApp->qwsProcessEvent(event) == 1;

   120         delete event;

   121         if (ret) {

   122             return true;

   123         }

   124     }

   125 

   126     if (!d->interrupt) {

   127         extern QList<QWSCommand*> *qt_get_server_queue();

   128         if (!qt_get_server_queue()->isEmpty()) {

   129             QWSServer::processEventQueue();

   130         }

   131 

   132         if (QEventDispatcherUNIX::processEvents(flags))

   133             return true;

   134     }

   135     return (nevents > 0);

   136 }

   137 

   138 bool QEventDispatcherQWS::hasPendingEvents()

   139 {

   140     extern uint qGlobalPostedEventsCount(); // from qapplication.cpp

   141     return qGlobalPostedEventsCount() || qt_fbdpy->eventPending();

   142 }

   143 

   144 void QEventDispatcherQWS::startingUp()

   145 {

   146 

   147 }

   148 

   149 void QEventDispatcherQWS::closingDown()

   150 {

   151 

   152 }

   153 

   154 void QEventDispatcherQWS::flush()

   155 {

   156     if(qApp)

   157         qApp->sendPostedEvents();

   158     (void)qt_fbdpy->eventPending(); // flush

   159 }

   160 

   161 

   162 int QEventDispatcherQWS::select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,

   163                                 timeval *timeout)

   164 {

   165     return QEventDispatcherUNIX::select(nfds, readfds, writefds, exceptfds, timeout);

   166 }

   167 

   168 QT_END_NAMESPACE