[556] | 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the QtGui module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #include "qplatformdefs.h"
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| 43 | #include "qapplication.h"
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| 44 | #include "private/qwscommand_qws_p.h"
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| 45 | #include "qwsdisplay_qws.h"
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| 46 | #include "qwsevent_qws.h"
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| 47 | #include "qwindowsystem_qws.h"
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| 48 | #include "qeventdispatcher_qws_p.h"
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| 49 | #include "private/qeventdispatcher_unix_p.h"
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| 50 | #ifndef QT_NO_THREAD
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| 51 | # include "qmutex.h"
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| 52 | #endif
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| 53 |
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| 54 | #include <errno.h>
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| 55 |
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| 56 | QT_BEGIN_NAMESPACE
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| 57 |
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| 58 | QT_USE_NAMESPACE
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| 59 |
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| 60 | class QEventDispatcherQWSPrivate : public QEventDispatcherUNIXPrivate
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| 61 | {
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| 62 | Q_DECLARE_PUBLIC(QEventDispatcherQWS)
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| 63 | public:
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| 64 | inline QEventDispatcherQWSPrivate()
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| 65 | { }
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| 66 | QList<QWSEvent*> queuedUserInputEvents;
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| 67 | };
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| 68 |
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| 69 |
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| 70 | QEventDispatcherQWS::QEventDispatcherQWS(QObject *parent)
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| 71 | : QEventDispatcherUNIX(*new QEventDispatcherQWSPrivate, parent)
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| 72 | { }
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| 73 |
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| 74 | QEventDispatcherQWS::~QEventDispatcherQWS()
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| 75 | { }
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| 76 |
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| 77 |
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| 78 |
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| 79 | // from qapplication_qws.cpp
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| 80 | extern QWSDisplay* qt_fbdpy; // QWS `display'
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| 81 |
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| 82 | //#define ZERO_FOR_THE_MOMENT
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| 83 |
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| 84 | bool QEventDispatcherQWS::processEvents(QEventLoop::ProcessEventsFlags flags)
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| 85 | {
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| 86 | Q_D(QEventDispatcherQWS);
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| 87 | // process events from the QWS server
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| 88 | int nevents = 0;
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| 89 |
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| 90 | // handle gui and posted events
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| 91 | d->interrupt = false;
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| 92 | QApplication::sendPostedEvents();
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| 93 |
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| 94 | while (!d->interrupt) { // also flushes output buffer ###can be optimized
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| 95 | QWSEvent *event;
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| 96 | if (!(flags & QEventLoop::ExcludeUserInputEvents)
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| 97 | && !d->queuedUserInputEvents.isEmpty()) {
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| 98 | // process a pending user input event
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| 99 | event = d->queuedUserInputEvents.takeFirst();
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| 100 | } else if (qt_fbdpy->eventPending()) {
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| 101 | event = qt_fbdpy->getEvent(); // get next event
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| 102 | if (flags & QEventLoop::ExcludeUserInputEvents) {
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| 103 | // queue user input events
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| 104 | if (event->type == QWSEvent::Mouse || event->type == QWSEvent::Key) {
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| 105 | d->queuedUserInputEvents.append(event);
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| 106 | continue;
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| 107 | }
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| 108 | }
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| 109 | } else {
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| 110 | break;
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| 111 | }
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| 112 |
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| 113 | if (filterEvent(event)) {
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| 114 | delete event;
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| 115 | continue;
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| 116 | }
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| 117 | nevents++;
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| 118 |
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| 119 | bool ret = qApp->qwsProcessEvent(event) == 1;
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| 120 | delete event;
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| 121 | if (ret) {
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| 122 | return true;
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| 123 | }
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| 124 | }
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| 125 |
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| 126 | if (!d->interrupt) {
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| 127 | extern QList<QWSCommand*> *qt_get_server_queue();
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| 128 | if (!qt_get_server_queue()->isEmpty()) {
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| 129 | QWSServer::processEventQueue();
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| 130 | }
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| 131 |
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| 132 | if (QEventDispatcherUNIX::processEvents(flags))
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| 133 | return true;
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| 134 | }
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| 135 | return (nevents > 0);
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| 136 | }
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| 137 |
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| 138 | bool QEventDispatcherQWS::hasPendingEvents()
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| 139 | {
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| 140 | extern uint qGlobalPostedEventsCount(); // from qapplication.cpp
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| 141 | return qGlobalPostedEventsCount() || qt_fbdpy->eventPending();
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| 142 | }
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| 143 |
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| 144 | void QEventDispatcherQWS::startingUp()
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| 145 | {
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| 146 |
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| 147 | }
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| 148 |
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| 149 | void QEventDispatcherQWS::closingDown()
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| 150 | {
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| 151 |
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| 152 | }
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| 153 |
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| 154 | void QEventDispatcherQWS::flush()
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| 155 | {
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| 156 | if(qApp)
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| 157 | qApp->sendPostedEvents();
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| 158 | (void)qt_fbdpy->eventPending(); // flush
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| 159 | }
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| 160 |
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| 161 |
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| 162 | int QEventDispatcherQWS::select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
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| 163 | timeval *timeout)
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| 164 | {
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| 165 | return QEventDispatcherUNIX::select(nfds, readfds, writefds, exceptfds, timeout);
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| 166 | }
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| 167 |
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| 168 | QT_END_NAMESPACE
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