qwindowsysteminterface.cpp

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qwindowsysteminterface.h"
#include <qpa/qplatformwindow.h>
#include "qwindowsysteminterface_p.h"
#include "private/qguiapplication_p.h"
#include "private/qevent_p.h"
#include "private/qeventpoint_p.h"
#include "private/qpointingdevice_p.h"
#include "private/qscreen_p.h"
#include <QAbstractEventDispatcher>
#include <qpa/qplatformintegration.h>
#include <qdebug.h>
#include "qhighdpiscaling_p.h"
 
#include <QtCore/qscopedvaluerollback.h>
#include <QtCore/private/qlocking_p.h>
 
#if QT_CONFIG(draganddrop)
#include <qpa/qplatformdrag.h>
#endif
 
QT_BEGIN_NAMESPACE
 
using namespace Qt::StringLiterals;
 
Q_LOGGING_CATEGORY(lcQpaInputDevices, "qt.qpa.input.devices")
 
Q_CONSTINIT QElapsedTimer QWindowSystemInterfacePrivate::eventTime;
bool QWindowSystemInterfacePrivate::synchronousWindowSystemEvents = false;
bool QWindowSystemInterfacePrivate::TabletEvent::platformSynthesizesMouse = true;
QWaitCondition QWindowSystemInterfacePrivate::eventsFlushed;
Q_CONSTINIT QMutex QWindowSystemInterfacePrivate::flushEventMutex;
Q_CONSTINIT QAtomicInt QWindowSystemInterfacePrivate::eventAccepted;
QWindowSystemEventHandler *QWindowSystemInterfacePrivate::eventHandler;
QWindowSystemInterfacePrivate::WindowSystemEventList QWindowSystemInterfacePrivate::windowSystemEventQueue;
 
extern QPointer<QWindow> qt_last_mouse_receiver;
 
 
// ------------------- QWindowSystemInterfacePrivate -------------------
 
template<typename Delivery>
struct QWindowSystemHelper
{
    template<typename EventType, typename ...Args>
    static bool handleEvent(Args ...);
};
 
/*
    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 asynchronously
    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. If the event is delivered from another thread
    than the Qt main thread the window system event queue is flushed, which may deliver
    other events as well.
 
    \sa flushWindowSystemEvents(), setSynchronousWindowSystemEvents()
*/
template<>
template<typename EventType, typename ...Args>
bool QWindowSystemHelper<QWindowSystemInterface::DefaultDelivery>::handleEvent(Args ...args)
{
    return QWindowSystemInterfacePrivate::synchronousWindowSystemEvents
        ? QWindowSystemHelper<QWindowSystemInterface::SynchronousDelivery>::handleEvent<EventType>(args...)
        : QWindowSystemHelper<QWindowSystemInterface::AsynchronousDelivery>::handleEvent<EventType>(args...);
}
 
/*
    Handles a window system event synchronously.
 
    Qt Gui will process the event immediately. The return value indicates if Qt
    accepted the event.
 
    If the event is delivered from another thread than the Qt main thread the
    window system event queue is flushed, which may deliver other events as
    well.
*/
template<>
template<typename EventType, typename ...Args>
bool QWindowSystemHelper<QWindowSystemInterface::SynchronousDelivery>::handleEvent(Args ...args)
{
    if (QThread::currentThread() == QGuiApplication::instance()->thread()) {
        EventType event(args...);
        // Process the event immediately on the Gui thread and return the accepted state
        if (QWindowSystemInterfacePrivate::eventHandler) {
            if (!QWindowSystemInterfacePrivate::eventHandler->sendEvent(&event))
                return false;
        } else {
            QGuiApplicationPrivate::processWindowSystemEvent(&event);
        }
        return event.eventAccepted;
    } 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.
        QWindowSystemHelper<QWindowSystemInterface::AsynchronousDelivery>::handleEvent<EventType>(args...);
        return QWindowSystemInterface::flushWindowSystemEvents();
    }
}
 
/*
    Handles a window system event asynchronously by posting the event to Qt Gui.
 
    This function posts the event on the window system event queue and wakes the
    Gui event dispatcher. Qt Gui will then handle the event asynchronously at a
    later point.
*/
template<>
template<typename EventType, typename ...Args>
bool QWindowSystemHelper<QWindowSystemInterface::AsynchronousDelivery>::handleEvent(Args ...args)
{
    QWindowSystemInterfacePrivate::windowSystemEventQueue.append(new EventType(args...));
    if (QAbstractEventDispatcher *dispatcher = QGuiApplicationPrivate::qt_qpa_core_dispatcher())
        dispatcher->wakeUp();
    return true;
}
 
template <typename EventType, typename Delivery = QWindowSystemInterface::DefaultDelivery, typename ...Args>
static bool handleWindowSystemEvent(Args ...args)
{
    return QWindowSystemHelper<Delivery>::template handleEvent<EventType>(args...);
}
 
qsizetype QWindowSystemInterfacePrivate::windowSystemEventsQueued()
{
    return windowSystemEventQueue.count();
}
 
bool QWindowSystemInterfacePrivate::nonUserInputEventsQueued()
{
    return windowSystemEventQueue.nonUserInputEventsQueued();
}
 
QWindowSystemInterfacePrivate::WindowSystemEvent * QWindowSystemInterfacePrivate::getWindowSystemEvent()
{
    return windowSystemEventQueue.takeFirstOrReturnNull();
}
 
QWindowSystemInterfacePrivate::WindowSystemEvent *QWindowSystemInterfacePrivate::getNonUserInputWindowSystemEvent()
{
    return windowSystemEventQueue.takeFirstNonUserInputOrReturnNull();
}
 
QWindowSystemInterfacePrivate::WindowSystemEvent *QWindowSystemInterfacePrivate::peekWindowSystemEvent(EventType t)
{
    return windowSystemEventQueue.peekAtFirstOfType(t);
}
 
void QWindowSystemInterfacePrivate::removeWindowSystemEvent(WindowSystemEvent *event)
{
    windowSystemEventQueue.remove(event);
}
 
void QWindowSystemInterfacePrivate::installWindowSystemEventHandler(QWindowSystemEventHandler *handler)
{
    if (!eventHandler)
        eventHandler = handler;
}
 
void QWindowSystemInterfacePrivate::removeWindowSystemEventhandler(QWindowSystemEventHandler *handler)
{
    if (eventHandler == handler)
        eventHandler = nullptr;
}
 
QWindowSystemEventHandler::~QWindowSystemEventHandler()
{
    QWindowSystemInterfacePrivate::removeWindowSystemEventhandler(this);
}
 
bool QWindowSystemEventHandler::sendEvent(QWindowSystemInterfacePrivate::WindowSystemEvent *e)
{
    QGuiApplicationPrivate::processWindowSystemEvent(e);
    return true;
}
 
//------------------------------------------------------------
//
// Callback functions for plugins:
//
 
#define QT_DEFINE_QPA_EVENT_HANDLER(ReturnType, HandlerName, ...) \
    template Q_GUI_EXPORT ReturnType QWindowSystemInterface::HandlerName<QWindowSystemInterface::DefaultDelivery>(__VA_ARGS__); \
    template Q_GUI_EXPORT ReturnType QWindowSystemInterface::HandlerName<QWindowSystemInterface::SynchronousDelivery>(__VA_ARGS__); \
    template Q_GUI_EXPORT ReturnType QWindowSystemInterface::HandlerName<QWindowSystemInterface::AsynchronousDelivery>(__VA_ARGS__); \
    template<typename Delivery> ReturnType QWindowSystemInterface::HandlerName(__VA_ARGS__)
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleEnterEvent, QWindow *window, const QPointF &local, const QPointF &global)
{
    if (window) {
        handleWindowSystemEvent<QWindowSystemInterfacePrivate::EnterEvent, Delivery>(window,
            QHighDpi::fromNativeLocalPosition(local, window), QHighDpi::fromNativeGlobalPosition(global, window));
    }
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleLeaveEvent, QWindow *window)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::LeaveEvent, Delivery>(window);
}
 
void QWindowSystemInterface::handleEnterLeaveEvent(QWindow *enter, QWindow *leave, const QPointF &local, const QPointF& global)
{
    handleLeaveEvent<AsynchronousDelivery>(leave);
    handleEnterEvent(enter, local, global);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleWindowActivated, QWindow *window, Qt::FocusReason r)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ActivatedWindowEvent, Delivery>(window, r);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleWindowStateChanged, QWindow *window, Qt::WindowStates newState, int oldState)
{
    Q_ASSERT(window);
    if (oldState < Qt::WindowNoState)
        oldState = window->windowStates();
 
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::WindowStateChangedEvent, Delivery>(window, newState, Qt::WindowStates(oldState));
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleWindowScreenChanged, QWindow *window, QScreen *screen)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::WindowScreenChangedEvent, Delivery>(window, screen);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleWindowDevicePixelRatioChanged, QWindow *window)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::WindowDevicePixelRatioChangedEvent, Delivery>(window);
}
 
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleSafeAreaMarginsChanged, QWindow *window)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::SafeAreaMarginsChangedEvent, Delivery>(window);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleApplicationStateChanged, Qt::ApplicationState newState, bool forcePropagate)
{
    Q_ASSERT(QGuiApplicationPrivate::platformIntegration()->hasCapability(QPlatformIntegration::ApplicationState));
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ApplicationStateChangedEvent, Delivery>(newState, forcePropagate);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleApplicationTermination)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::WindowSystemEvent, Delivery>(
        QWindowSystemInterfacePrivate::ApplicationTermination);
}
 
QWindowSystemInterfacePrivate::GeometryChangeEvent::GeometryChangeEvent(QWindow *window, const QRect &newGeometry)
    : WindowSystemEvent(GeometryChange)
    , window(window)
    , newGeometry(newGeometry)
{
    if (const QPlatformWindow *pw = window->handle()) {
        const auto nativeGeometry = pw->QPlatformWindow::geometry();
        requestedGeometry = QHighDpi::fromNativeWindowGeometry(nativeGeometry, window);
    }
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleGeometryChange, QWindow *window, const QRect &newRect)
{
    Q_ASSERT(window);
    const auto newRectDi = QHighDpi::fromNativeWindowGeometry(newRect, window);
    if (window->handle()) {
        // Persist the new geometry so that QWindow::geometry() can be queried in the resize event
        window->handle()->QPlatformWindow::setGeometry(newRect);
        // FIXME: This does not work during platform window creation, where the QWindow does not
        // have its handle set up yet. Platforms that deliver events during window creation need
        // to handle the persistence manually, e.g. by overriding geometry().
    }
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::GeometryChangeEvent, Delivery>(window, newRectDi);
}
 
QWindowSystemInterfacePrivate::ExposeEvent::ExposeEvent(QWindow *window, const QRegion &region)
    : WindowSystemEvent(Expose)
    , window(window)
    , isExposed(window && window->handle() ? window->handle()->isExposed() : false)
    , region(region)
{
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleExposeEvent, QWindow *window, const QRegion &region)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::ExposeEvent, Delivery>(window,
        QHighDpi::fromNativeLocalExposedRegion(region, window));
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handlePaintEvent, QWindow *window, const QRegion &region)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::PaintEvent, Delivery>(window,
        QHighDpi::fromNativeLocalExposedRegion(region, window));
}
 
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleCloseEvent, QWindow *window)
{
    Q_ASSERT(window);
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::CloseEvent, Delivery>(window);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleMouseEvent, QWindow *window,
                            const QPointF &local, const QPointF &global, Qt::MouseButtons state,
                            Qt::MouseButton button, QEvent::Type type, Qt::KeyboardModifiers mods,
                            Qt::MouseEventSource source)
{
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleMouseEvent<Delivery>(window, time, local, global, state, button, type, mods, source);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleMouseEvent, QWindow *window, const QPointingDevice *device,
                            const QPointF &local, const QPointF &global, Qt::MouseButtons state,
                            Qt::MouseButton button, QEvent::Type type, Qt::KeyboardModifiers mods,
                            Qt::MouseEventSource source)
{
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleMouseEvent<Delivery>(window, time, device, local, global, state, button, type, mods, source);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleMouseEvent, QWindow *window, ulong timestamp,
                            const QPointF &local, const QPointF &global, Qt::MouseButtons state,
                            Qt::MouseButton button, QEvent::Type type, Qt::KeyboardModifiers mods,
                            Qt::MouseEventSource source)
{
    return handleMouseEvent<Delivery>(window, timestamp, QPointingDevice::primaryPointingDevice(),
                                      local, global, state, button, type, mods, source);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleMouseEvent, QWindow *window, ulong timestamp, const QPointingDevice *device,
                            const QPointF &local, const QPointF &global, Qt::MouseButtons state,
                            Qt::MouseButton button, QEvent::Type type, Qt::KeyboardModifiers mods,
                            Qt::MouseEventSource source)
{
 
    bool isNonClientArea = {};
 
    switch (type) {
    case QEvent::MouseButtonDblClick:
    case QEvent::NonClientAreaMouseButtonDblClick:
        Q_ASSERT_X(false, "QWindowSystemInterface::handleMouseEvent",
               "QTBUG-71263: Native double clicks are not implemented.");
        return false;
    case QEvent::MouseMove:
    case QEvent::MouseButtonPress:
    case QEvent::MouseButtonRelease:
        isNonClientArea = false;
        break;
    case QEvent::NonClientAreaMouseMove:
    case QEvent::NonClientAreaMouseButtonPress:
    case QEvent::NonClientAreaMouseButtonRelease:
        isNonClientArea = true;
        break;
    default:
        Q_UNREACHABLE();
    }
 
    auto localPos = QHighDpi::fromNativeLocalPosition(local, window);
    auto globalPos = QHighDpi::fromNativeGlobalPosition(global, window);
 
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::MouseEvent, Delivery>(window,
        timestamp, localPos, globalPos, state, mods, button, type, source, isNonClientArea, device);
}
 
bool QWindowSystemInterface::handleShortcutEvent(QWindow *window, ulong timestamp, int keyCode, Qt::KeyboardModifiers modifiers, quint32 nativeScanCode,
                                      quint32 nativeVirtualKey, quint32 nativeModifiers, const QString &text, bool autorepeat, ushort count)
{
#if QT_CONFIG(shortcut)
    if (!window)
        window = QGuiApplication::focusWindow();
 
    QShortcutMap &shortcutMap = QGuiApplicationPrivate::instance()->shortcutMap;
    if (shortcutMap.state() == QKeySequence::NoMatch) {
        // Check if the shortcut is overridden by some object in the event delivery path (typically the focus object).
        // If so, we should not look up the shortcut in the shortcut map, but instead deliver the event as a regular
        // key event, so that the target that accepted the shortcut override event can handle it. Note that we only
        // do this if the shortcut map hasn't found a partial shortcut match yet. If it has, the shortcut can not be
        // overridden.
        bool overridden = handleWindowSystemEvent<QWindowSystemInterfacePrivate::KeyEvent, SynchronousDelivery>
            (window,timestamp, QEvent::ShortcutOverride, keyCode, modifiers, nativeScanCode,
             nativeVirtualKey, nativeModifiers, text, autorepeat, count);
        if (overridden)
            return false;
    }
 
    // The shortcut event is dispatched as a QShortcutEvent, not a QKeyEvent, but we use
    // the QKeyEvent as a container for the various properties that the shortcut map needs
    // to inspect to determine if a shortcut matched the keys that were pressed.
    QKeyEvent keyEvent(QEvent::ShortcutOverride, keyCode, modifiers, nativeScanCode,
        nativeVirtualKey, nativeModifiers, text, autorepeat, count);
 
    return shortcutMap.tryShortcut(&keyEvent);
#else
    Q_UNUSED(window);
    Q_UNUSED(timestamp);
    Q_UNUSED(keyCode);
    Q_UNUSED(modifiers);
    Q_UNUSED(nativeScanCode);
    Q_UNUSED(nativeVirtualKey);
    Q_UNUSED(nativeModifiers);
    Q_UNUSED(text);
    Q_UNUSED(autorepeat);
    Q_UNUSED(count);
    return false;
#endif
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleKeyEvent, QWindow *window, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text, bool autorep, ushort count) {
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleKeyEvent<Delivery>(window, time, t, k, mods, text, autorep, count);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleKeyEvent, QWindow *window, ulong timestamp, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text, bool autorep, ushort count)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::KeyEvent, Delivery>(window,
        timestamp, t, k, mods, text, autorep, count);
}
 
bool QWindowSystemInterface::handleExtendedKeyEvent(QWindow *window, 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();
    return handleExtendedKeyEvent(window, time, type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers,
                           text, autorep, count);
}
 
bool QWindowSystemInterface::handleExtendedKeyEvent(QWindow *window, ulong timestamp, QEvent::Type type, int key,
                                                    Qt::KeyboardModifiers modifiers,
                                                    quint32 nativeScanCode, quint32 nativeVirtualKey,
                                                    quint32 nativeModifiers,
                                                    const QString& text, bool autorep,
                                                    ushort count)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::KeyEvent>(window,
        timestamp, type, key, modifiers, nativeScanCode, nativeVirtualKey, nativeModifiers, text, autorep, count);
}
 
bool QWindowSystemInterface::handleWheelEvent(QWindow *window, const QPointF &local, const QPointF &global, QPoint pixelDelta, QPoint angleDelta, Qt::KeyboardModifiers mods, Qt::ScrollPhase phase, Qt::MouseEventSource source)
{
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleWheelEvent(window, time, local, global, pixelDelta, angleDelta, mods, phase, source);
}
 
bool QWindowSystemInterface::handleWheelEvent(QWindow *window, ulong timestamp, const QPointF &local, const QPointF &global, QPoint pixelDelta, QPoint angleDelta, Qt::KeyboardModifiers mods, Qt::ScrollPhase phase,
                                              Qt::MouseEventSource source, bool invertedScrolling)
{
    return handleWheelEvent(window, timestamp, QPointingDevice::primaryPointingDevice(), local, global,
                            pixelDelta, angleDelta, mods, phase, source, invertedScrolling);
}
 
bool QWindowSystemInterface::handleWheelEvent(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                              const QPointF &local, const QPointF &global, QPoint pixelDelta, QPoint angleDelta,
                                              Qt::KeyboardModifiers mods, Qt::ScrollPhase phase,
                                              Qt::MouseEventSource source, bool invertedScrolling)
{
    // Qt 4 sends two separate wheel events for horizontal and vertical
    // deltas. For Qt 5 we want to send the deltas in one event, but at the
    // same time preserve source and behavior compatibility with Qt 4.
    //
    // In addition high-resolution pixel-based deltas are also supported.
    // Platforms that does not support these may pass a null point here.
    // Angle deltas must always be sent in addition to pixel deltas.
 
    // Pass Qt::ScrollBegin and Qt::ScrollEnd through
    // even if the wheel delta is null.
    if (angleDelta.isNull() && phase == Qt::ScrollUpdate)
        return false;
 
    // Simple case: vertical deltas only:
    if (angleDelta.y() != 0 && angleDelta.x() == 0) {
        return handleWindowSystemEvent<QWindowSystemInterfacePrivate::WheelEvent>(window,
            timestamp, QHighDpi::fromNativeLocalPosition(local, window), QHighDpi::fromNativeGlobalPosition(global, window),
            pixelDelta, angleDelta, angleDelta.y(), Qt::Vertical, mods, phase, source, invertedScrolling, device);
    }
 
    // Simple case: horizontal deltas only:
    if (angleDelta.y() == 0 && angleDelta.x() != 0) {
        return handleWindowSystemEvent<QWindowSystemInterfacePrivate::WheelEvent>(window,
            timestamp, QHighDpi::fromNativeLocalPosition(local, window), QHighDpi::fromNativeGlobalPosition(global, window),
            pixelDelta, angleDelta, angleDelta.x(), Qt::Horizontal, mods, phase, source, invertedScrolling, device);
    }
 
    bool acceptVert;
    bool acceptHorz;
    // Both horizontal and vertical deltas: Send two wheel events.
    // The first event contains the Qt 5 pixel and angle delta as points,
    // and in addition the Qt 4 compatibility vertical angle delta.
    acceptVert = handleWindowSystemEvent<QWindowSystemInterfacePrivate::WheelEvent>(window,
        timestamp, QHighDpi::fromNativeLocalPosition(local, window), QHighDpi::fromNativeGlobalPosition(global, window),
        pixelDelta, angleDelta, angleDelta.y(), Qt::Vertical, mods, phase, source, invertedScrolling, device);
 
    // The second event contains null pixel and angle points and the
    // Qt 4 compatibility horizontal angle delta.
    acceptHorz = handleWindowSystemEvent<QWindowSystemInterfacePrivate::WheelEvent>(window,
        timestamp, QHighDpi::fromNativeLocalPosition(local, window), QHighDpi::fromNativeGlobalPosition(global, window),
        QPoint(), QPoint(), angleDelta.x(), Qt::Horizontal, mods, phase, source, invertedScrolling, device);
 
    return acceptVert || acceptHorz;
}
 
void QWindowSystemInterface::registerInputDevice(const QInputDevice *device)
{
    qCDebug(lcQpaInputDevices) << "register" << device;
    QInputDevicePrivate::registerDevice(device);
}
 
QList<QEventPoint>
    QWindowSystemInterfacePrivate::fromNativeTouchPoints(const QList<QWindowSystemInterface::TouchPoint> &points,
                                                         const QWindow *window, QEvent::Type *type)
{
    QList<QEventPoint> touchPoints;
    QEventPoint::States states;
 
    touchPoints.reserve(points.size());
    QList<QWindowSystemInterface::TouchPoint>::const_iterator point = points.constBegin();
    QList<QWindowSystemInterface::TouchPoint>::const_iterator end = points.constEnd();
    while (point != end) {
        QPointF globalPos = QHighDpi::fromNativePixels(point->area.center(), window);
        QEventPoint p(point->id, point->state, globalPos, globalPos);
        states |= point->state;
        if (point->uniqueId >= 0)
            QMutableEventPoint::setUniqueId(p, QPointingDeviceUniqueId::fromNumericId(point->uniqueId));
        QMutableEventPoint::setPressure(p, point->pressure);
        QMutableEventPoint::setRotation(p, point->rotation);
        QMutableEventPoint::setEllipseDiameters(p, QHighDpi::fromNativePixels(point->area.size(), window));
        QMutableEventPoint::setVelocity(p, QHighDpi::fromNativePixels(point->velocity, window));
 
        // The local pos is not set: it will be calculated
        // when the event gets processed by QGuiApplication.
 
        touchPoints.append(p);
        ++point;
    }
 
    // Determine the event type based on the combined point states.
    if (type) {
        *type = QEvent::TouchUpdate;
        if (states == QEventPoint::State::Pressed)
            *type = QEvent::TouchBegin;
        else if (states == QEventPoint::State::Released)
            *type = QEvent::TouchEnd;
    }
 
    return touchPoints;
}
 
QWindowSystemInterface::TouchPoint
QWindowSystemInterfacePrivate::toNativeTouchPoint(const QEventPoint &pt, const QWindow *window)
{
    QWindowSystemInterface::TouchPoint p;
    p.id = pt.id();
    QRectF area(QPointF(), pt.ellipseDiameters());
    area.moveCenter(pt.globalPosition());
    // TODO store ellipseDiameters in QWindowSystemInterface::TouchPoint or just use QEventPoint
    p.area = QHighDpi::toNativePixels(area, window);
    p.pressure = pt.pressure();
    p.state = pt.state();
    p.velocity = QHighDpi::toNativePixels(pt.velocity(), window);
    return p;
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleTouchEvent, QWindow *window, const QPointingDevice *device,
                                              const QList<TouchPoint> &points, Qt::KeyboardModifiers mods)
{
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleTouchEvent<Delivery>(window, time, device, points, mods);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleTouchEvent, QWindow *window, ulong timestamp, const QPointingDevice *device,
                                              const QList<TouchPoint> &points, Qt::KeyboardModifiers mods)
{
    if (!points.size()) // Touch events must have at least one point
        return false;
 
    if (!QPointingDevicePrivate::isRegistered(device)) // Disallow passing bogus, non-registered devices.
        return false;
 
    QEvent::Type type;
    QList<QEventPoint> touchPoints =
            QWindowSystemInterfacePrivate::fromNativeTouchPoints(points, window, &type);
 
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::TouchEvent, Delivery>(window,
        timestamp, type, device, touchPoints, mods);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleTouchCancelEvent, QWindow *window, const QPointingDevice *device,
                                                    Qt::KeyboardModifiers mods)
{
    unsigned long time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleTouchCancelEvent<Delivery>(window, time, device, mods);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(bool, handleTouchCancelEvent, QWindow *window, ulong timestamp, const QPointingDevice *device,
                                                    Qt::KeyboardModifiers mods)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::TouchEvent, Delivery>(window,
        timestamp, QEvent::TouchCancel, device, QList<QEventPoint>(), mods);
}
 
void QWindowSystemInterface::handleScreenAdded(QPlatformScreen *platformScreen, bool isPrimary)
{
    QScreen *screen = new QScreen(platformScreen);
 
    if (isPrimary)
        QGuiApplicationPrivate::screen_list.prepend(screen);
    else
        QGuiApplicationPrivate::screen_list.append(screen);
 
    QGuiApplicationPrivate::resetCachedDevicePixelRatio();
    QHighDpiScaling::updateHighDpiScaling();
    screen->d_func()->updateGeometry();
 
    emit qGuiApp->screenAdded(screen);
 
    if (isPrimary)
        emit qGuiApp->primaryScreenChanged(screen);
}
 
void QWindowSystemInterface::handleScreenRemoved(QPlatformScreen *platformScreen)
{
    QScreen *screen = platformScreen->screen();
 
    // Remove screen
    const bool wasPrimary = QGuiApplication::primaryScreen() == screen;
    QGuiApplicationPrivate::screen_list.removeOne(screen);
    QGuiApplicationPrivate::resetCachedDevicePixelRatio();
 
    if (qGuiApp) {
        QScreen *newPrimaryScreen = QGuiApplication::primaryScreen();
        if (wasPrimary && newPrimaryScreen)
            emit qGuiApp->primaryScreenChanged(newPrimaryScreen);
 
        // Allow clients to manage windows that are affected by the screen going
        // away, before we fall back to moving them to the primary screen.
        emit qApp->screenRemoved(screen);
 
        if (!QGuiApplication::closingDown()) {
            bool movingFromVirtualSibling = newPrimaryScreen
                && newPrimaryScreen->handle()->virtualSiblings().contains(platformScreen);
 
            // Move any leftover windows to the primary screen
            const auto allWindows = QGuiApplication::allWindows();
            for (QWindow *window : allWindows) {
                if (!window->isTopLevel() || window->screen() != screen)
                    continue;
 
                const bool wasVisible = window->isVisible();
                window->setScreen(newPrimaryScreen);
 
                // Re-show window if moved from a virtual sibling screen. Otherwise
                // leave it up to the application developer to show the window.
                if (movingFromVirtualSibling)
                    window->setVisible(wasVisible);
            }
        }
    }
 
    // Important to keep this order since the QSceen doesn't own the platform screen
    delete screen;
    delete platformScreen;
}
 
void QWindowSystemInterface::handlePrimaryScreenChanged(QPlatformScreen *newPrimary)
{
    QScreen *newPrimaryScreen = newPrimary->screen();
    qsizetype indexOfScreen = QGuiApplicationPrivate::screen_list.indexOf(newPrimaryScreen);
    Q_ASSERT(indexOfScreen >= 0);
    if (indexOfScreen == 0)
        return;
 
    QGuiApplicationPrivate::screen_list.swapItemsAt(0, indexOfScreen);
    emit qGuiApp->primaryScreenChanged(newPrimaryScreen);
}
 
void QWindowSystemInterface::handleScreenOrientationChange(QScreen *screen, Qt::ScreenOrientation orientation)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ScreenOrientationEvent>(screen, orientation);
}
 
void QWindowSystemInterface::handleScreenGeometryChange(QScreen *screen, const QRect &geometry, const QRect &availableGeometry)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ScreenGeometryEvent>(screen,
        QHighDpi::fromNativeScreenGeometry(geometry, screen), QHighDpi::fromNative(availableGeometry,
        screen, geometry.topLeft()));
}
 
void QWindowSystemInterface::handleScreenLogicalDotsPerInchChange(QScreen *screen, qreal dpiX, qreal dpiY)
{
    const QDpi effectiveDpi = QPlatformScreen::overrideDpi(QDpi{dpiX, dpiY});
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ScreenLogicalDotsPerInchEvent>(screen,
                    effectiveDpi.first, effectiveDpi.second);
}
 
void QWindowSystemInterface::handleScreenRefreshRateChange(QScreen *screen, qreal newRefreshRate)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ScreenRefreshRateEvent>(screen, newRefreshRate);
}
 
QT_DEFINE_QPA_EVENT_HANDLER(void, handleThemeChange, QWindow *window)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ThemeChangeEvent, Delivery>(window);
}
 
#if QT_CONFIG(draganddrop)
QPlatformDragQtResponse QWindowSystemInterface::handleDrag(QWindow *window, const QMimeData *dropData,
                                                           const QPoint &p, Qt::DropActions supportedActions,
                                                           Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers)
{
    auto pos = QHighDpi::fromNativeLocalPosition(p, window);
    return QGuiApplicationPrivate::processDrag(window, dropData, pos, supportedActions, buttons, modifiers);
}
 
QPlatformDropQtResponse QWindowSystemInterface::handleDrop(QWindow *window, const QMimeData *dropData,
                                                           const QPoint &p, Qt::DropActions supportedActions,
                                                           Qt::MouseButtons buttons, Qt::KeyboardModifiers modifiers)
{
    auto pos = QHighDpi::fromNativeLocalPosition(p, window);
    return QGuiApplicationPrivate::processDrop(window, dropData, pos, supportedActions, buttons, modifiers);
}
#endif // QT_CONFIG(draganddrop)
 
bool QWindowSystemInterface::handleNativeEvent(QWindow *window, const QByteArray &eventType, void *message, qintptr *result)
{
    return QGuiApplicationPrivate::processNativeEvent(window, eventType, message, result);
}
 
void QWindowSystemInterface::handleFileOpenEvent(const QString& fileName)
{
    QWindowSystemInterfacePrivate::FileOpenEvent e(fileName);
    QGuiApplicationPrivate::processWindowSystemEvent(&e);
}
 
void QWindowSystemInterface::handleFileOpenEvent(const QUrl &url)
{
    QWindowSystemInterfacePrivate::FileOpenEvent e(url);
    QGuiApplicationPrivate::processWindowSystemEvent(&e);
}
 
void QWindowSystemInterfacePrivate::TabletEvent::setPlatformSynthesizesMouse(bool v)
{
    platformSynthesizesMouse = v;
}
 
bool QWindowSystemInterface::handleTabletEvent(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                               const QPointF &local, const QPointF &global,
                                               Qt::MouseButtons buttons, qreal pressure, int xTilt, int yTilt,
                                               qreal tangentialPressure, qreal rotation, int z,
                                               Qt::KeyboardModifiers modifiers)
{
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::TabletEvent>(window,
        timestamp,
        QHighDpi::fromNativeLocalPosition(local, window),
        QHighDpi::fromNativeGlobalPosition(global, window),
        device, buttons, pressure,
        xTilt, yTilt, tangentialPressure, rotation, z, modifiers);
}
 
bool QWindowSystemInterface::handleTabletEvent(QWindow *window, const QPointingDevice *device,
                                               const QPointF &local, const QPointF &global,
                                               Qt::MouseButtons buttons, qreal pressure, int xTilt, int yTilt,
                                               qreal tangentialPressure, qreal rotation, int z,
                                               Qt::KeyboardModifiers modifiers)
{
    const ulong time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleTabletEvent(window, time, device, local, global,
                             buttons, pressure, xTilt, yTilt, tangentialPressure,
                             rotation, z, modifiers);
}
 
bool QWindowSystemInterface::handleTabletEvent(QWindow *window, ulong timestamp, const QPointF &local, const QPointF &global,
                                               int device, int pointerType, Qt::MouseButtons buttons, qreal pressure, int xTilt, int yTilt,
                                               qreal tangentialPressure, qreal rotation, int z, qint64 uid,
                                               Qt::KeyboardModifiers modifiers)
{
    const QPointingDevice *dev = QPointingDevicePrivate::tabletDevice(QInputDevice::DeviceType(device),QPointingDevice::PointerType(pointerType),
                                                                      QPointingDeviceUniqueId::fromNumericId(uid));
    return handleTabletEvent(window, timestamp, dev, local, global, buttons, pressure,
                      xTilt, yTilt, tangentialPressure, rotation, z, modifiers);
}
 
bool QWindowSystemInterface::handleTabletEvent(QWindow *window, const QPointF &local, const QPointF &global,
                                               int device, int pointerType, Qt::MouseButtons buttons, qreal pressure, int xTilt, int yTilt,
                                               qreal tangentialPressure, qreal rotation, int z, qint64 uid,
                                               Qt::KeyboardModifiers modifiers)
{
    ulong time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleTabletEvent(window, time, local, global, device, pointerType, buttons, pressure,
                      xTilt, yTilt, tangentialPressure, rotation, z, uid, modifiers);
}
 
bool QWindowSystemInterface::handleTabletEnterLeaveProximityEvent(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                                                  bool inProximity, const QPointF &local, const QPointF &global,
                                                                  Qt::MouseButtons buttons, int xTilt, int yTilt,
                                                                  qreal tangentialPressure, qreal rotation, int z,
                                                                  Qt::KeyboardModifiers modifiers)
{
    Q_UNUSED(window);
    Q_UNUSED(local);
    Q_UNUSED(global);
    Q_UNUSED(buttons);
    Q_UNUSED(xTilt);
    Q_UNUSED(yTilt);
    Q_UNUSED(tangentialPressure);
    Q_UNUSED(rotation);
    Q_UNUSED(z);
    Q_UNUSED(modifiers);
    return inProximity
        ? handleWindowSystemEvent<QWindowSystemInterfacePrivate::TabletEnterProximityEvent>(timestamp, device)
        : handleWindowSystemEvent<QWindowSystemInterfacePrivate::TabletLeaveProximityEvent>(timestamp, device);
}
 
bool QWindowSystemInterface::handleTabletEnterLeaveProximityEvent(QWindow *window, const QPointingDevice *device,
                                                                  bool inProximity, const QPointF &local, const QPointF &global,
                                                                  Qt::MouseButtons buttons, int xTilt, int yTilt,
                                                                  qreal tangentialPressure, qreal rotation, int z,
                                                                  Qt::KeyboardModifiers modifiers)
{
    const ulong time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    return handleTabletEnterLeaveProximityEvent(window, time, device, inProximity,
                                                local, global, buttons, xTilt, yTilt,
                                                tangentialPressure, rotation, z, modifiers);
}
 
 
bool QWindowSystemInterface::handleTabletEnterProximityEvent(ulong timestamp, int deviceType, int pointerType, qint64 uid)
{
    const QPointingDevice *device = QPointingDevicePrivate::tabletDevice(QInputDevice::DeviceType(deviceType),
                                                                         QPointingDevice::PointerType(pointerType),
                                                                         QPointingDeviceUniqueId::fromNumericId(uid));
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::TabletEnterProximityEvent>(timestamp, device);
}
 
void QWindowSystemInterface::handleTabletEnterProximityEvent(int deviceType, int pointerType, qint64 uid)
{
    ulong time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    handleTabletEnterProximityEvent(time, deviceType, pointerType, uid);
}
 
bool QWindowSystemInterface::handleTabletLeaveProximityEvent(ulong timestamp, int deviceType, int pointerType, qint64 uid)
{
    const QPointingDevice *device = QPointingDevicePrivate::tabletDevice(QInputDevice::DeviceType(deviceType),
                                                                         QPointingDevice::PointerType(pointerType),
                                                                         QPointingDeviceUniqueId::fromNumericId(uid));
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::TabletLeaveProximityEvent>(timestamp, device);
}
 
void QWindowSystemInterface::handleTabletLeaveProximityEvent(int deviceType, int pointerType, qint64 uid)
{
    ulong time = QWindowSystemInterfacePrivate::eventTime.elapsed();
    handleTabletLeaveProximityEvent(time, deviceType, pointerType, uid);
}
 
#ifndef QT_NO_GESTURES
bool QWindowSystemInterface::handleGestureEvent(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                                Qt::NativeGestureType type, const QPointF &local, const QPointF &global, int fingerCount)
{
    return handleGestureEventWithValueAndDelta(window, timestamp, device, type, {}, {}, local, global, fingerCount);
}
 
bool QWindowSystemInterface::handleGestureEventWithRealValue(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                                             Qt::NativeGestureType type, qreal value, const QPointF &local, const QPointF &global, int fingerCount)
{
    return handleGestureEventWithValueAndDelta(window, timestamp, device, type, value, {}, local, global, fingerCount);
}
 
bool QWindowSystemInterface::handleGestureEventWithValueAndDelta(QWindow *window, ulong timestamp, const QPointingDevice *device,
                                                                 Qt::NativeGestureType type, qreal value, const QPointF &delta,
                                                                 const QPointF &local, const QPointF &global, int fingerCount)
{
    auto localPos = QHighDpi::fromNativeLocalPosition(local, window);
    auto globalPos = QHighDpi::fromNativeGlobalPosition(global, window);
 
    return handleWindowSystemEvent<QWindowSystemInterfacePrivate::GestureEvent>(window,
        timestamp, type, device, fingerCount, localPos, globalPos, value, delta);
}
#endif // QT_NO_GESTURES
 
void QWindowSystemInterface::handlePlatformPanelEvent(QWindow *w)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::PlatformPanelEvent>(w);
}
 
#ifndef QT_NO_CONTEXTMENU
void QWindowSystemInterface::handleContextMenuEvent(QWindow *window, bool mouseTriggered,
                                                    const QPoint &pos, const QPoint &globalPos,
                                                    Qt::KeyboardModifiers modifiers)
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::ContextMenuEvent>(window,
        mouseTriggered, pos, globalPos, modifiers);
}
#endif
 
#if QT_CONFIG(whatsthis)
void QWindowSystemInterface::handleEnterWhatsThisEvent()
{
    handleWindowSystemEvent<QWindowSystemInterfacePrivate::WindowSystemEvent>(
        QWindowSystemInterfacePrivate::EnterWhatsThisMode);
}
#endif
 
#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug dbg, const QWindowSystemInterface::TouchPoint &p)
{
    QDebugStateSaver saver(dbg);
    dbg.nospace() << "TouchPoint(" << p.id << " @" << p.area << " normalized " << p.normalPosition
                  << " press " << p.pressure << " vel " << p.velocity << " state " << (int)p.state;
    return dbg;
}
#endif
 
// ------------------ Event dispatcher functionality ------------------
 
bool QWindowSystemInterface::flushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
{
    const qsizetype count = QWindowSystemInterfacePrivate::windowSystemEventQueue.count();
    if (!count)
        return false;
    if (!QGuiApplication::instance()) {
        qWarning().nospace()
            << "QWindowSystemInterface::flushWindowSystemEvents() invoked after "
               "QGuiApplication destruction, discarding " << count << " events.";
        QWindowSystemInterfacePrivate::windowSystemEventQueue.clear();
        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);
        handleWindowSystemEvent<QWindowSystemInterfacePrivate::FlushEventsEvent, AsynchronousDelivery>(flags);
        QWindowSystemInterfacePrivate::eventsFlushed.wait(&QWindowSystemInterfacePrivate::flushEventMutex);
    } else {
        sendWindowSystemEvents(flags);
    }
    return QWindowSystemInterfacePrivate::eventAccepted.loadRelaxed() > 0;
}
 
void QWindowSystemInterface::deferredFlushWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
{
    Q_ASSERT(QThread::currentThread() == QGuiApplication::instance()->thread());
 
    QMutexLocker locker(&QWindowSystemInterfacePrivate::flushEventMutex);
    sendWindowSystemEvents(flags);
    QWindowSystemInterfacePrivate::eventsFlushed.wakeOne();
}
 
bool QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::ProcessEventsFlags flags)
{
    int nevents = 0;
 
    while (QWindowSystemInterfacePrivate::windowSystemEventsQueued()) {
        QWindowSystemInterfacePrivate::WindowSystemEvent *event =
                flags & QEventLoop::ExcludeUserInputEvents ?
                        QWindowSystemInterfacePrivate::getNonUserInputWindowSystemEvent() :
                        QWindowSystemInterfacePrivate::getWindowSystemEvent();
        if (!event)
            break;
 
        if (QWindowSystemInterfacePrivate::eventHandler) {
            if (QWindowSystemInterfacePrivate::eventHandler->sendEvent(event))
                nevents++;
        } else {
            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.storeRelaxed(event->eventAccepted);
 
        delete event;
    }
 
    return (nevents > 0);
}
 
void QWindowSystemInterface::setSynchronousWindowSystemEvents(bool enable)
{
    QWindowSystemInterfacePrivate::synchronousWindowSystemEvents = enable;
}
 
int QWindowSystemInterface::windowSystemEventsQueued()
{
    return QWindowSystemInterfacePrivate::windowSystemEventsQueued();
}
 
bool QWindowSystemInterface::nonUserInputEventsQueued()
{
    return QWindowSystemInterfacePrivate::nonUserInputEventsQueued();
}
 
// --------------------- QtTestLib support ---------------------
 
// The following functions are used by testlib, and need to be synchronous to avoid
// race conditions with plugins delivering native events from secondary threads.
// FIXME: It seems unnecessary to export these wrapper functions, when qtestlib could access
// QWindowSystemInterface directly (by adding dependency to gui-private), see QTBUG-63146.
 
Q_GUI_EXPORT void qt_handleMouseEvent(QWindow *window, const QPointF &local, const QPointF &global,
                                      Qt::MouseButtons state, Qt::MouseButton button,
                                      QEvent::Type type, Qt::KeyboardModifiers mods, int timestamp)
{
    QPointF nativeLocal = QHighDpi::toNativeLocalPosition(local, window);
    QPointF nativeGlobal = QHighDpi::toNativeGlobalPosition(global, window);
    QWindowSystemInterface::handleMouseEvent<QWindowSystemInterface::SynchronousDelivery>(window,
                timestamp, nativeLocal, nativeGlobal, state, button, type, mods);
}
 
/*
    Used by QTest::simulateEvent() to synthesize key events during testing
*/
Q_GUI_EXPORT void qt_handleKeyEvent(QWindow *window, QEvent::Type t, int k, Qt::KeyboardModifiers mods, const QString & text = QString(), bool autorep = false, ushort count = 1)
{
#if defined(Q_OS_MACOS)
    // FIXME: Move into QTest::simulateEvent() and align with QGuiApplicationPrivate::processKeyEvent()
    auto timestamp = QWindowSystemInterfacePrivate::eventTime.elapsed();
    if (t == QEvent::KeyPress && QWindowSystemInterface::handleShortcutEvent(window, timestamp, k, mods, 0, 0, 0, text, autorep, count))
        return;
#endif
 
    QWindowSystemInterface::handleKeyEvent<QWindowSystemInterface::SynchronousDelivery>(window, t, k, mods, text, autorep, count);
}
 
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)
{
#if QT_CONFIG(shortcut)
 
    // FIXME: This method should not allow targeting a specific object, but should
    // instead forward the event to a window, which then takes care of normal event
    // propagation. We need to fix a lot of tests before we can refactor this (the
    // window needs to be exposed and active and have a focus object), so we leave
    // it as is for now. See QTBUG-48577.
 
    QGuiApplicationPrivate::modifier_buttons = mods;
 
    QKeyEvent qevent(QEvent::ShortcutOverride, k, mods, text, autorep, count);
    qevent.setTimestamp(timestamp);
 
    QShortcutMap &shortcutMap = QGuiApplicationPrivate::instance()->shortcutMap;
    if (shortcutMap.state() == QKeySequence::NoMatch) {
        // Try sending as QKeyEvent::ShortcutOverride first
        QCoreApplication::sendEvent(o, &qevent);
        if (qevent.isAccepted())
            return false;
    }
 
    // Then as QShortcutEvent
    return shortcutMap.tryShortcut(&qevent);
#else
    Q_UNUSED(o);
    Q_UNUSED(timestamp);
    Q_UNUSED(k);
    Q_UNUSED(mods);
    Q_UNUSED(text);
    Q_UNUSED(autorep);
    Q_UNUSED(count);
    return false;
#endif
}
 
namespace QTest
{
    Q_GUI_EXPORT QPointingDevice * createTouchDevice(QInputDevice::DeviceType devType,
                                                     QInputDevice::Capabilities caps)
    {
        static qint64 nextId = 0x100000000;
        QPointingDevice *ret = new QPointingDevice("test touch device"_L1, nextId++,
                                                   devType, QPointingDevice::PointerType::Finger,
                                                   caps, 8, 0);
        QWindowSystemInterface::registerInputDevice(ret);
        return ret;
    }
}
 
Q_GUI_EXPORT bool qt_handleTouchEventv2(QWindow *window, const QPointingDevice *device,
                                const QList<QEventPoint> &points,
                                Qt::KeyboardModifiers mods)
{
    return QWindowSystemInterface::handleTouchEvent<QWindowSystemInterface::SynchronousDelivery>(window, device,
        QWindowSystemInterfacePrivate::toNativeTouchPoints(points, window), mods);
}
 
Q_GUI_EXPORT void qt_handleTouchEvent(QWindow *window, const QPointingDevice *device,
                                const QList<QEventPoint> &points,
                                Qt::KeyboardModifiers mods)
{
    qt_handleTouchEventv2(window, device, points, mods);
}
 
QT_END_NAMESPACE