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    41 

    42 #include "qeventdispatcher_glib_qws_p.h"

    43 

    44 #include "qapplication.h"

    45 

    46 #include "qplatformdefs.h"

    47 #include "qapplication.h"

    48 #include "private/qwscommand_qws_p.h"

    49 #include "qwsdisplay_qws.h"

    50 #include "qwsevent_qws.h"

    51 #include "qwindowsystem_qws.h"

    52 

    53 #include <glib.h>

    54 

    55 QT_BEGIN_NAMESPACE

    56 

    57 // from qapplication_qws.cpp

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

    59 

    60 //from qwindowsystem_qws.cpp

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

    62 

    63 struct GQWSEventSource

    64 {

    65     GSource source;

    66     QEventLoop::ProcessEventsFlags flags;

    67     QWSEventDispatcherGlib *q;

    68     QWSEventDispatcherGlibPrivate *d;

    69 };

    70 

    71 class QWSEventDispatcherGlibPrivate : public QEventDispatcherGlibPrivate

    72 {

    73     Q_DECLARE_PUBLIC(QWSEventDispatcherGlib)

    74 

    75 public:

    76     QWSEventDispatcherGlibPrivate();

    77     GQWSEventSource *qwsEventSource;

    78     QList<QWSEvent*> queuedUserInputEvents;

    79 };

    80 

    81 static gboolean qwsEventSourcePrepare(GSource *s, gint *timeout)

    82 {

    83     if (timeout)

    84         *timeout = -1;

    85     GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);

    86     return qt_fbdpy->eventPending() || !source->d->queuedUserInputEvents.isEmpty()

    87         || !qt_get_server_queue()->isEmpty() ;

    88 }

    89 

    90 static gboolean qwsEventSourceCheck(GSource *s)

    91 {

    92     GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);

    93     return qt_fbdpy->eventPending() || !source->d->queuedUserInputEvents.isEmpty()

    94         || !qt_get_server_queue()->isEmpty() ;

    95 }

    96 

    97 static gboolean qwsEventSourceDispatch(GSource *s, GSourceFunc callback, gpointer user_data)

    98 {

    99     GQWSEventSource *source = reinterpret_cast<GQWSEventSource *>(s);

   100 

   101     //??? ulong marker = XNextRequest(X11->display);

   102     do {

   103         QWSEvent *event;

   104         if (!(source->flags & QEventLoop::ExcludeUserInputEvents)

   105             && !source->d->queuedUserInputEvents.isEmpty()) {

   106             // process a pending user input event

   107             event = source->d->queuedUserInputEvents.takeFirst();

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

   109             event = qt_fbdpy->getEvent();

   110 

   111             if (source->flags & QEventLoop::ExcludeUserInputEvents) {

   112                 // queue user input events

   113 

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

   115                     source->d->queuedUserInputEvents.append(event);

   116                     continue;

   117                 }

   118             }

   119         } else {

   120             // no event to process

   121             break;

   122         }

   123 

   124         // send through event filter

   125         if (source->q->filterEvent(event)) {

   126             delete event;

   127             continue;

   128         }

   129 

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

   131         delete event;

   132         if (ret) {

   133             return true;

   134         }

   135 

   136     } while (qt_fbdpy->eventPending());

   137 

   138     if (callback)

   139         callback(user_data);

   140     return true;

   141 }

   142 

   143 static GSourceFuncs qwsEventSourceFuncs = {

   144     qwsEventSourcePrepare,

   145     qwsEventSourceCheck,

   146     qwsEventSourceDispatch,

   147     NULL,

   148     NULL,

   149     NULL

   150 };

   151 

   152 QWSEventDispatcherGlibPrivate::QWSEventDispatcherGlibPrivate()

   153 {

   154     qwsEventSource = reinterpret_cast<GQWSEventSource *>(g_source_new(&qwsEventSourceFuncs,

   155                                                                       sizeof(GQWSEventSource)));

   156     g_source_set_can_recurse(&qwsEventSource->source, true);

   157 

   158     qwsEventSource->flags = QEventLoop::AllEvents;

   159     qwsEventSource->q = 0;

   160     qwsEventSource->d = 0;

   161 

   162     g_source_attach(&qwsEventSource->source, mainContext);

   163 }

   164 

   165 QWSEventDispatcherGlib::QWSEventDispatcherGlib(QObject *parent)

   166     : QEventDispatcherGlib(*new QWSEventDispatcherGlibPrivate, parent)

   167 {

   168 }

   169 

   170 QWSEventDispatcherGlib::~QWSEventDispatcherGlib()

   171 {

   172     Q_D(QWSEventDispatcherGlib);

   173 

   174     g_source_destroy(&d->qwsEventSource->source);

   175     d->qwsEventSource = 0;

   176 }

   177 

   178 bool QWSEventDispatcherGlib::processEvents(QEventLoop::ProcessEventsFlags flags)

   179 {

   180     Q_D(QWSEventDispatcherGlib);

   181     QEventLoop::ProcessEventsFlags saved_flags = d->qwsEventSource->flags;

   182     d->qwsEventSource->flags = flags;

   183     bool returnValue = QEventDispatcherGlib::processEvents(flags);

   184     d->qwsEventSource->flags = saved_flags;

   185     return returnValue;

   186 }

   187 

   188 void QWSEventDispatcherGlib::startingUp()

   189 {

   190      Q_D(QWSEventDispatcherGlib);

   191      d->qwsEventSource->q = this;

   192      d->qwsEventSource->d = d;

   193 }

   194 

   195 QT_END_NAMESPACE