bool QWindowSystemInterfacePrivate::synchronousWindowSystemEvents = false;
QWaitCondition QWindowSystemInterfacePrivate::eventsFlushed;
QMutex QWindowSystemInterfacePrivate::flushEventMutex;
+QAtomicInt QWindowSystemInterfacePrivate::eventAccepted;
QWindowSystemEventHandler *QWindowSystemInterfacePrivate::eventHandler;
//------------------------------------------------------------
QWindowSystemInterfacePrivate::eventsFlushed.wakeOne();
}
-void QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
+/*!
+ Make Qt Gui process all events on the event queue immediately. Return the
+ accepted state for the last event on the queue.
+*/
+bool QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
{
const int count = QWindowSystemInterfacePrivate::windowSystemEventQueue.count();
if (!count)
- return;
+ return false;
if (!QGuiApplication::instance()) {
qWarning().nospace()
<< "QWindowSystemInterface::flushWindowSystemEvents() invoked after "
"QGuiApplication destruction, discarding " << count << " events.";
QWindowSystemInterfacePrivate::windowSystemEventQueue.clear();
- return;
+ return false;
}
if (QThread::currentThread() != QGuiApplication::instance()->thread()) {
QMutexLocker locker(&QWindowSystemInterfacePrivate::flushEventMutex);
} else {
sendWindowSystemEvents(flags);
}
+ return QWindowSystemInterfacePrivate::eventAccepted.load() > 0;
}
bool QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
nevents++;
QGuiApplicationPrivate::processWindowSystemEvent(event);
}
+
+ // Record the accepted state for the processed event
+ // (excluding flush events). This state can then be
+ // returned by flushWindowSystemEvents().
+ if (event->type != QWindowSystemInterfacePrivate::FlushEvents)
+ QWindowSystemInterfacePrivate::eventAccepted.store(event->eventAccepted);
+
delete event;
}
// For event dispatcher implementations
static bool sendWindowSystemEvents(QEventLoop::ProcessEventsFlags flags);
static void setSynchronousWindowSystemEvents(bool enable);
- static void flushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags = QEventLoop::AllEvents);
+ static bool flushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags = QEventLoop::AllEvents);
static void deferredFlushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags);
static int windowSystemEventsQueued();
};
#include <QMutex>
#include <QList>
#include <QWaitCondition>
+#include <QAtomicInt>
QT_BEGIN_NAMESPACE
static QWaitCondition eventsFlushed;
static QMutex flushEventMutex;
+ static QAtomicInt eventAccepted;
static QList<QTouchEvent::TouchPoint>
fromNativeTouchPoints(const QList<QWindowSystemInterface::TouchPoint> &points,