diff options
Diffstat (limited to 'src/gui/kernel/qwindowsysteminterface.cpp')
| -rw-r--r-- | src/gui/kernel/qwindowsysteminterface.cpp | 159 |
1 files changed, 102 insertions, 57 deletions
diff --git a/src/gui/kernel/qwindowsysteminterface.cpp b/src/gui/kernel/qwindowsysteminterface.cpp index 88cf2dac93..faa1ff8068 100644 --- a/src/gui/kernel/qwindowsysteminterface.cpp +++ b/src/gui/kernel/qwindowsysteminterface.cpp @@ -49,6 +49,7 @@ QElapsedTimer QWindowSystemInterfacePrivate::eventTime; bool QWindowSystemInterfacePrivate::synchronousWindowSystemEvents = false; QWaitCondition QWindowSystemInterfacePrivate::eventsFlushed; QMutex QWindowSystemInterfacePrivate::flushEventMutex; +QAtomicInt QWindowSystemInterfacePrivate::eventAccepted; QWindowSystemEventHandler *QWindowSystemInterfacePrivate::eventHandler; //------------------------------------------------------------ @@ -323,18 +324,18 @@ bool QWindowSystemInterface::handleKeyEvent(QWindow *tlw, ulong timestamp, QEven return QWindowSystemInterfacePrivate::handleWindowSystemEvent(e); } -void QWindowSystemInterface::handleExtendedKeyEvent(QWindow *w, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers, +bool QWindowSystemInterface::handleExtendedKeyEvent(QWindow *w, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers, quint32 nativeScanCode, quint32 nativeVirtualKey, quint32 nativeModifiers, const QString& text, bool autorep, ushort count) { unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed(); - handleExtendedKeyEvent(w, time, type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, + return handleExtendedKeyEvent(w, time, type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, autorep, count); } -void QWindowSystemInterface::handleExtendedKeyEvent(QWindow *tlw, ulong timestamp, QEvent::Type type, int key, +bool QWindowSystemInterface::handleExtendedKeyEvent(QWindow *tlw, ulong timestamp, QEvent::Type type, int key, Qt::KeyboardModifiers modifiers, quint32 nativeScanCode, quint32 nativeVirtualKey, quint32 nativeModifiers, @@ -345,7 +346,7 @@ void QWindowSystemInterface::handleExtendedKeyEvent(QWindow *tlw, ulong timestam QWindowSystemInterfacePrivate::KeyEvent * e = new QWindowSystemInterfacePrivate::KeyEvent(tlw, timestamp, type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, autorep, count); - QWindowSystemInterfacePrivate::handleWindowSystemEvent(e); + return QWindowSystemInterfacePrivate::handleWindowSystemEvent(e); } void QWindowSystemInterface::handleWheelEvent(QWindow *w, const QPointF & local, const QPointF & global, int d, Qt::Orientation o, Qt::KeyboardModifiers mods) { @@ -441,27 +442,60 @@ void QWindowSystemInterfacePrivate::removeWindowSystemEvent(WindowSystemEvent *e windowSystemEventQueue.remove(event); } +void QWindowSystemInterfacePrivate::postWindowSystemEvent(WindowSystemEvent *ev) +{ + windowSystemEventQueue.append(ev); + QAbstractEventDispatcher *dispatcher = QGuiApplicationPrivate::qt_qpa_core_dispatcher(); + if (dispatcher) + dispatcher->wakeUp(); +} + +/*! + Handles a window system event. + + By default this function posts the event on the window system event queue and + wakes the Gui event dispatcher. Qt Gui will then handle the event asynchonously + at a later point. The return value is not used in asynchronous mode and will + always be true. + + In synchronous mode Qt Gui will process the event immediately. The return value + indicates if Qt accepted the event. + + \sa flushWindowSystemEvents(), setSynchronousWindowSystemEvents() +*/ bool QWindowSystemInterfacePrivate::handleWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent *ev) { bool accepted = true; if (synchronousWindowSystemEvents) { - QGuiApplicationPrivate::processWindowSystemEvent(ev); - accepted = ev->eventAccepted; - delete ev; + if (QThread::currentThread() == QGuiApplication::instance()->thread()) { + // Process the event immediately on the current thread and return the accepted state. + QGuiApplicationPrivate::processWindowSystemEvent(ev); + accepted = ev->eventAccepted; + delete ev; + } else { + // Post the event on the Qt main thread queue and flush the queue. + // This will wake up the Gui thread which will process the event. + // Return the accepted state for the last event on the queue, + // which is the event posted by this function. + postWindowSystemEvent(ev); + accepted = QWindowSystemInterface::flushWindowSystemEvents(); + } } else { - windowSystemEventQueue.append(ev); - QAbstractEventDispatcher *dispatcher = QGuiApplicationPrivate::qt_qpa_core_dispatcher(); - if (dispatcher) - dispatcher->wakeUp(); + postWindowSystemEvent(ev); } return accepted; } -void QWindowSystemInterface::registerTouchDevice(QTouchDevice *device) +void QWindowSystemInterface::registerTouchDevice(const QTouchDevice *device) { QTouchDevicePrivate::registerDevice(device); } +void QWindowSystemInterface::unregisterTouchDevice(const QTouchDevice *device) +{ + QTouchDevicePrivate::unregisterDevice(device); +} + void QWindowSystemInterface::handleTouchEvent(QWindow *w, QTouchDevice *device, const QList<TouchPoint> &points, Qt::KeyboardModifiers mods) { @@ -618,26 +652,33 @@ void QWindowSystemInterface::deferredFlushWindowSystemEvents(QEventLoop::Process 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()) { + // Post a FlushEvents event which will trigger a call back to + // deferredFlushWindowSystemEvents from the Gui thread. QMutexLocker locker(&QWindowSystemInterfacePrivate::flushEventMutex); QWindowSystemInterfacePrivate::FlushEventsEvent *e = new QWindowSystemInterfacePrivate::FlushEventsEvent(flags); - QWindowSystemInterfacePrivate::handleWindowSystemEvent(e); + QWindowSystemInterfacePrivate::postWindowSystemEvent(e); QWindowSystemInterfacePrivate::eventsFlushed.wait(&QWindowSystemInterfacePrivate::flushEventMutex); } else { sendWindowSystemEvents(flags); } + return QWindowSystemInterfacePrivate::eventAccepted.load() > 0; } bool QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::ProcessEventsFlags flags) @@ -659,6 +700,13 @@ bool QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::ProcessEventsFla 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; } @@ -858,26 +906,23 @@ Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QWindowSystemInterface::TouchPo } #endif +// The following functions are used by testlib, and need to be synchronous to avoid +// race conditions with plugins delivering native events from secondary threads. + Q_GUI_EXPORT void qt_handleMouseEvent(QWindow *w, const QPointF &local, const QPointF &global, Qt::MouseButtons b, Qt::KeyboardModifiers mods, int timestamp) { - QWindowSystemInterfacePrivate::MouseEvent e(w, timestamp, local, global, b, mods, Qt::MouseEventNotSynthesized); - QGuiApplicationPrivate::processWindowSystemEvent(&e); + bool wasSynchronous = QWindowSystemInterfacePrivate::synchronousWindowSystemEvents; + QWindowSystemInterface::setSynchronousWindowSystemEvents(true); + QWindowSystemInterface::handleMouseEvent(w, timestamp, local, global, b, mods); + QWindowSystemInterface::setSynchronousWindowSystemEvents(wasSynchronous); } Q_GUI_EXPORT void qt_handleKeyEvent(QWindow *w, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text = QString(), bool autorep = false, ushort count = 1) { - unsigned long timestamp = QWindowSystemInterfacePrivate::eventTime.elapsed(); - - // This is special handling needed for OS X which eventually will call sendEvent(), on other platforms - // this might not be safe, e.g., on Android. See: QGuiApplicationPrivate::processKeyEvent() for - // shortcut overriding on other platforms. -#if defined(Q_OS_OSX) - if (t == QEvent::KeyPress && QWindowSystemInterface::tryHandleShortcutEvent(w, timestamp, k, mods, text)) - return; -#endif // Q_OS_OSX - - QWindowSystemInterfacePrivate::KeyEvent e(w, timestamp, t, k, mods, text, autorep, count); - QGuiApplicationPrivate::processWindowSystemEvent(&e); + bool wasSynchronous = QWindowSystemInterfacePrivate::synchronousWindowSystemEvents; + QWindowSystemInterface::setSynchronousWindowSystemEvents(true); + QWindowSystemInterface::handleKeyEvent(w, t, k, mods, text, autorep, count); + QWindowSystemInterface::setSynchronousWindowSystemEvents(wasSynchronous); } Q_GUI_EXPORT bool qt_sendShortcutOverrideEvent(QObject *o, ulong timestamp, int k, Qt::KeyboardModifiers mods, const QString &text = QString(), bool autorep = false, ushort count = 1) @@ -885,37 +930,37 @@ Q_GUI_EXPORT bool qt_sendShortcutOverrideEvent(QObject *o, ulong timestamp, int return QWindowSystemInterface::tryHandleShortcutEventToObject(o, timestamp, k, mods, text, autorep, count); } -Q_GUI_EXPORT void qt_handleTouchEvent(QWindow *w, QTouchDevice *device, - const QList<QTouchEvent::TouchPoint> &points, - Qt::KeyboardModifiers mods = Qt::NoModifier) +static QWindowSystemInterface::TouchPoint touchPoint(const QTouchEvent::TouchPoint& pt) { - unsigned long timestamp = QWindowSystemInterfacePrivate::eventTime.elapsed(); - - if (!points.size()) // Touch events must have at least one point - return; - - if (!QTouchDevicePrivate::isRegistered(device)) // Disallow passing bogus, non-registered devices. - return; - - QEvent::Type type; - Qt::TouchPointStates states; + QWindowSystemInterface::TouchPoint p; + p.id = pt.id(); + p.flags = pt.flags(); + p.normalPosition = pt.normalizedPos(); + p.area = pt.screenRect(); + p.pressure = pt.pressure(); + p.state = pt.state(); + p.velocity = pt.velocity(); + p.rawPositions = pt.rawScreenPositions(); + return p; +} +static QList<struct QWindowSystemInterface::TouchPoint> touchPointList(const QList<QTouchEvent::TouchPoint>& pointList) +{ + QList<struct QWindowSystemInterface::TouchPoint> newList; - QList<QTouchEvent::TouchPoint>::const_iterator point = points.constBegin(); - QList<QTouchEvent::TouchPoint>::const_iterator end = points.constEnd(); - while (point != end) { - states |= point->state(); - ++point; - } + Q_FOREACH (QTouchEvent::TouchPoint p, pointList) + newList.append(touchPoint(p)); - // Determine the event type based on the combined point states. - type = QEvent::TouchUpdate; - if (states == Qt::TouchPointPressed) - type = QEvent::TouchBegin; - else if (states == Qt::TouchPointReleased) - type = QEvent::TouchEnd; + return newList; +} - QWindowSystemInterfacePrivate::TouchEvent e(w, timestamp, type, device, points, mods); - QGuiApplicationPrivate::processWindowSystemEvent(&e); +Q_GUI_EXPORT void qt_handleTouchEvent(QWindow *w, QTouchDevice *device, + const QList<QTouchEvent::TouchPoint> &points, + Qt::KeyboardModifiers mods = Qt::NoModifier) +{ + bool wasSynchronous = QWindowSystemInterfacePrivate::synchronousWindowSystemEvents; + QWindowSystemInterface::setSynchronousWindowSystemEvents(true); + QWindowSystemInterface::handleTouchEvent(w, device, touchPointList(points), mods); + QWindowSystemInterface::setSynchronousWindowSystemEvents(wasSynchronous); } QWindowSystemEventHandler::~QWindowSystemEventHandler() |