Long live Qt!

1 files changed, 195 insertions, 0 deletions

diff --git a/src/gui/kernel/qeventdispatcher_glib_qws.cpp b/src/gui/kernel/qeventdispatcher_glib_qws.cpp
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+++ b/src/gui/kernel/qeventdispatcher_glib_qws.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qeventdispatcher_glib_qws_p.h"
+
+#include "qapplication.h"
+
+#include "qplatformdefs.h"
+#include "qapplication.h"
+#include "private/qwscommand_qws_p.h"
+#include "qwsdisplay_qws.h"
+#include "qwsevent_qws.h"
+#include "qwindowsystem_qws.h"
+
+#include <glib.h>
+
+QT_BEGIN_NAMESPACE
+
+// from qapplication_qws.cpp
+extern QWSDisplay* qt_fbdpy; // QWS `display'
+
+//from qwindowsystem_qws.cpp
+extern QList<QWSCommand*> *qt_get_server_queue();
+
+struct GQWSEventSource
+{
+    GSource source;
+    QEventLoop::ProcessEventsFlags flags;
+    QWSEventDispatcherGlib *q;
+    QWSEventDispatcherGlibPrivate *d;
+};
+
+class QWSEventDispatcherGlibPrivate : public QEventDispatcherGlibPrivate
+{
+    Q_DECLARE_PUBLIC(QWSEventDispatcherGlib)
+
+public:
+    QWSEventDispatcherGlibPrivate();
+    GQWSEventSource *qwsEventSource;
+    QList<QWSEvent*> queuedUserInputEvents;
+};
+
+static gboolean qwsEventSourcePrepare(GSource *s, gint *timeout)
+{
+    if (timeout)
+        *timeout = -1;
+    GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);
+    return qt_fbdpy->eventPending() || !source->d->queuedUserInputEvents.isEmpty()
+        || !qt_get_server_queue()->isEmpty() ;
+}
+
+static gboolean qwsEventSourceCheck(GSource *s)
+{
+    GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);
+    return qt_fbdpy->eventPending() || !source->d->queuedUserInputEvents.isEmpty()
+        || !qt_get_server_queue()->isEmpty() ;
+}
+
+static gboolean qwsEventSourceDispatch(GSource *s, GSourceFunc callback, gpointer user_data)
+{
+    GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);
+
+    //??? ulong marker = XNextRequest(X11->display);
+    do {
+        QWSEvent *event;
+        if (!(source->flags & QEventLoop::ExcludeUserInputEvents)
+            && !source->d->queuedUserInputEvents.isEmpty()) {
+            // process a pending user input event
+            event = source->d->queuedUserInputEvents.takeFirst();
+        } else if (qt_fbdpy->eventPending()) {
+            event = qt_fbdpy->getEvent();
+
+            if (source->flags & QEventLoop::ExcludeUserInputEvents) {
+                // queue user input events
+
+                if (event->type == QWSEvent::Mouse || event->type == QWSEvent::Key) {
+                    source->d->queuedUserInputEvents.append(event);
+                    continue;
+                }
+            }
+        } else {
+            // no event to process
+            break;
+        }
+
+        // send through event filter
+        if (source->q->filterEvent(event)) {
+            delete event;
+            continue;
+        }
+
+        bool ret = qApp->qwsProcessEvent(event) == 1;
+        delete event;
+        if (ret) {
+            return true;
+        }
+
+    } while (qt_fbdpy->eventPending());
+
+    if (callback)
+        callback(user_data);
+    return true;
+}
+
+static GSourceFuncs qwsEventSourceFuncs = {
+    qwsEventSourcePrepare,
+    qwsEventSourceCheck,
+    qwsEventSourceDispatch,
+    NULL,
+    NULL,
+    NULL
+};
+
+QWSEventDispatcherGlibPrivate::QWSEventDispatcherGlibPrivate()
+{
+    qwsEventSource = reinterpret_cast<GQWSEventSource *>(g_source_new(&qwsEventSourceFuncs,
+                                                                      sizeof(GQWSEventSource)));
+    g_source_set_can_recurse(&qwsEventSource->source, true);
+
+    qwsEventSource->flags = QEventLoop::AllEvents;
+    qwsEventSource->q = 0;
+    qwsEventSource->d = 0;
+
+    g_source_attach(&qwsEventSource->source, mainContext);
+}
+
+QWSEventDispatcherGlib::QWSEventDispatcherGlib(QObject *parent)
+    : QEventDispatcherGlib(*new QWSEventDispatcherGlibPrivate, parent)
+{
+}
+
+QWSEventDispatcherGlib::~QWSEventDispatcherGlib()
+{
+    Q_D(QWSEventDispatcherGlib);
+
+    g_source_destroy(&d->qwsEventSource->source);
+    d->qwsEventSource = 0;
+}
+
+bool QWSEventDispatcherGlib::processEvents(QEventLoop::ProcessEventsFlags flags)
+{
+    Q_D(QWSEventDispatcherGlib);
+    QEventLoop::ProcessEventsFlags saved_flags = d->qwsEventSource->flags;
+    d->qwsEventSource->flags = flags;
+    bool returnValue = QEventDispatcherGlib::processEvents(flags);
+    d->qwsEventSource->flags = saved_flags;
+    return returnValue;
+}
+
+void QWSEventDispatcherGlib::startingUp()
+{
+     Q_D(QWSEventDispatcherGlib);
+     d->qwsEventSource->q = this;
+     d->qwsEventSource->d = d;
+}
+
+QT_END_NAMESPACE