File indexing completed on 2024-04-28 05:30:28

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2013, 2016 Martin Gräßlin <mgraesslin@kde.org>
     SPDX-FileCopyrightText: 2018 Roman Gilg <subdiff@gmail.com>
     SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
     SPDX-FileCopyrightText: 2023 Harald Sitter <sitter@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "pointer_input.h"
 
 #include <config-kwin.h>
 
 #include "core/output.h"
 #include "cursorsource.h"
 #include "decorations/decoratedclient.h"
 #include "effect/effecthandler.h"
 #include "input_event.h"
 #include "input_event_spy.h"
 #include "mousebuttons.h"
 #include "osd.h"
 #include "wayland/display.h"
 #include "wayland/pointer.h"
 #include "wayland/pointerconstraints_v1.h"
 #include "wayland/seat.h"
 #include "wayland/surface.h"
 #include "wayland_server.h"
 #include "workspace.h"
 #include "x11window.h"
 // KDecoration
 #include <KDecoration2/Decoration>
 // screenlocker
 #if KWIN_BUILD_SCREENLOCKER
 #include <KScreenLocker/KsldApp>
 #endif
 
 #include <KLocalizedString>
 
 #include <QHoverEvent>
 #include <QPainter>
 #include <QWindow>
 
 #include <linux/input.h>
 
 #include <cmath>
 
 namespace KWin
 {
 
 static bool screenContainsPos(const QPointF &pos)
 {
     const auto outputs = workspace()->outputs();
     for (const Output *output : outputs) {
         if (output->geometry().contains(flooredPoint(pos))) {
             return true;
         }
     }
     return false;
 }
 
 static QPointF confineToBoundingBox(const QPointF &pos, const QRectF &boundingBox)
 {
     return QPointF(
         std::clamp(pos.x(), boundingBox.left(), boundingBox.right() - 1.0),
         std::clamp(pos.y(), boundingBox.top(), boundingBox.bottom() - 1.0));
 }
 
 PointerInputRedirection::PointerInputRedirection(InputRedirection *parent)
     : InputDeviceHandler(parent)
     , m_cursor(nullptr)
 {
 }
 
 PointerInputRedirection::~PointerInputRedirection() = default;
 
 void PointerInputRedirection::init()
 {
     Q_ASSERT(!inited());
     waylandServer()->seat()->setHasPointer(input()->hasPointer());
     connect(input(), &InputRedirection::hasPointerChanged,
             waylandServer()->seat(), &SeatInterface::setHasPointer);
 
     m_cursor = new CursorImage(this);
     setInited(true);
     InputDeviceHandler::init();
 
     if (!input()->hasPointer()) {
         Cursors::self()->hideCursor();
     }
     connect(input(), &InputRedirection::hasPointerChanged, this, []() {
         if (input()->hasPointer()) {
             Cursors::self()->showCursor();
         } else {
             Cursors::self()->hideCursor();
         }
     });
 
     connect(Cursors::self()->mouse(), &Cursor::rendered, m_cursor, &CursorImage::markAsRendered);
     connect(m_cursor, &CursorImage::changed, Cursors::self()->mouse(), [this] {
         Cursors::self()->mouse()->setSource(m_cursor->source());
         m_cursor->updateCursorOutputs(m_pos);
     });
     Q_EMIT m_cursor->changed();
 
     connect(workspace(), &Workspace::outputsChanged, this, &PointerInputRedirection::updateAfterScreenChange);
 #if KWIN_BUILD_SCREENLOCKER
     if (waylandServer()->hasScreenLockerIntegration()) {
         connect(ScreenLocker::KSldApp::self(), &ScreenLocker::KSldApp::lockStateChanged, this, [this]() {
             if (waylandServer()->seat()->hasPointer()) {
                 waylandServer()->seat()->cancelPointerPinchGesture();
                 waylandServer()->seat()->cancelPointerSwipeGesture();
             }
             update();
         });
     }
 #endif
     connect(workspace(), &QObject::destroyed, this, [this] {
         setInited(false);
     });
     connect(waylandServer(), &QObject::destroyed, this, [this] {
         setInited(false);
     });
     connect(waylandServer()->seat(), &SeatInterface::dragEnded, this, [this]() {
         // need to force a focused pointer change
         setFocus(nullptr);
         update();
     });
     // connect the move resize of all window
     auto setupMoveResizeConnection = [this](Window *window) {
         connect(window, &Window::interactiveMoveResizeStarted, this, &PointerInputRedirection::updateOnStartMoveResize);
         connect(window, &Window::interactiveMoveResizeFinished, this, &PointerInputRedirection::update);
     };
     const auto clients = workspace()->windows();
     std::for_each(clients.begin(), clients.end(), setupMoveResizeConnection);
     connect(workspace(), &Workspace::windowAdded, this, setupMoveResizeConnection);
 
     // warp the cursor to center of screen containing the workspace center
     if (const Output *output = workspace()->outputAt(workspace()->geometry().center())) {
         warp(output->geometry().center());
     }
     updateAfterScreenChange();
 }
 
 void PointerInputRedirection::updateOnStartMoveResize()
 {
     breakPointerConstraints(focus() ? focus()->surface() : nullptr);
     disconnectPointerConstraintsConnection();
     setFocus(nullptr);
 }
 
 void PointerInputRedirection::updateToReset()
 {
     if (decoration()) {
         QHoverEvent event(QEvent::HoverLeave, QPointF(), QPointF());
         QCoreApplication::instance()->sendEvent(decoration()->decoration(), &event);
         setDecoration(nullptr);
     }
     if (focus()) {
         if (focus()->isClient()) {
             focus()->pointerLeaveEvent();
         }
         disconnect(m_focusGeometryConnection);
         m_focusGeometryConnection = QMetaObject::Connection();
         breakPointerConstraints(focus()->surface());
         disconnectPointerConstraintsConnection();
         setFocus(nullptr);
     }
 }
 
 class PositionUpdateBlocker
 {
 public:
     PositionUpdateBlocker(PointerInputRedirection *pointer)
         : m_pointer(pointer)
     {
         s_counter++;
     }
     ~PositionUpdateBlocker()
     {
         s_counter--;
         if (s_counter == 0) {
             if (!s_scheduledPositions.isEmpty()) {
                 const auto pos = s_scheduledPositions.takeFirst();
                 m_pointer->processMotionInternal(pos.pos, pos.delta, pos.deltaNonAccelerated, pos.time, nullptr);
             }
         }
     }
 
     static bool isPositionBlocked()
     {
         return s_counter > 0;
     }
 
     static void schedulePosition(const QPointF &pos, const QPointF &delta, const QPointF &deltaNonAccelerated, std::chrono::microseconds time)
     {
         s_scheduledPositions.append({pos, delta, deltaNonAccelerated, time});
     }
 
 private:
     static int s_counter;
     struct ScheduledPosition
     {
         QPointF pos;
         QPointF delta;
         QPointF deltaNonAccelerated;
         std::chrono::microseconds time;
     };
     static QList<ScheduledPosition> s_scheduledPositions;
 
     PointerInputRedirection *m_pointer;
 };
 
 int PositionUpdateBlocker::s_counter = 0;
 QList<PositionUpdateBlocker::ScheduledPosition> PositionUpdateBlocker::s_scheduledPositions;
 
 void PointerInputRedirection::processMotionAbsolute(const QPointF &pos, std::chrono::microseconds time, InputDevice *device)
 {
     processMotionInternal(pos, QPointF(), QPointF(), time, device);
 }
 
 void PointerInputRedirection::processMotion(const QPointF &delta, const QPointF &deltaNonAccelerated, std::chrono::microseconds time, InputDevice *device)
 {
     processMotionInternal(m_pos + delta, delta, deltaNonAccelerated, time, device);
 }
 
 void PointerInputRedirection::processMotionInternal(const QPointF &pos, const QPointF &delta, const QPointF &deltaNonAccelerated, std::chrono::microseconds time, InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     if (PositionUpdateBlocker::isPositionBlocked()) {
         PositionUpdateBlocker::schedulePosition(pos, delta, deltaNonAccelerated, time);
         return;
     }
 
     PositionUpdateBlocker blocker(this);
     updatePosition(pos);
     MouseEvent event(QEvent::MouseMove, m_pos, Qt::NoButton, m_qtButtons,
                      input()->keyboardModifiers(), time,
                      delta, deltaNonAccelerated, device);
     event.setModifiersRelevantForGlobalShortcuts(input()->modifiersRelevantForGlobalShortcuts());
 
     update();
     input()->processSpies(std::bind(&InputEventSpy::pointerEvent, std::placeholders::_1, &event));
     input()->processFilters(std::bind(&InputEventFilter::pointerEvent, std::placeholders::_1, &event, 0));
 }
 
 void PointerInputRedirection::processButton(uint32_t button, InputRedirection::PointerButtonState state, std::chrono::microseconds time, InputDevice *device)
 {
     input()->setLastInputHandler(this);
     QEvent::Type type;
     switch (state) {
     case InputRedirection::PointerButtonReleased:
         type = QEvent::MouseButtonRelease;
         break;
     case InputRedirection::PointerButtonPressed:
         type = QEvent::MouseButtonPress;
         update();
         break;
     default:
         Q_UNREACHABLE();
         return;
     }
 
     updateButton(button, state);
 
     MouseEvent event(type, m_pos, buttonToQtMouseButton(button), m_qtButtons,
                      input()->keyboardModifiers(), time, QPointF(), QPointF(), device);
     event.setModifiersRelevantForGlobalShortcuts(input()->modifiersRelevantForGlobalShortcuts());
     event.setNativeButton(button);
 
     input()->processSpies(std::bind(&InputEventSpy::pointerEvent, std::placeholders::_1, &event));
 
     if (!inited()) {
         return;
     }
 
     input()->processFilters(std::bind(&InputEventFilter::pointerEvent, std::placeholders::_1, &event, button));
 
     if (state == InputRedirection::PointerButtonReleased) {
         update();
     }
 }
 
 void PointerInputRedirection::processAxis(InputRedirection::PointerAxis axis, qreal delta, qint32 deltaV120,
                                           InputRedirection::PointerAxisSource source, std::chrono::microseconds time, InputDevice *device)
 {
     input()->setLastInputHandler(this);
     update();
 
     Q_EMIT input()->pointerAxisChanged(axis, delta);
 
     WheelEvent wheelEvent(m_pos, delta, deltaV120,
                           (axis == InputRedirection::PointerAxisHorizontal) ? Qt::Horizontal : Qt::Vertical,
                           m_qtButtons, input()->keyboardModifiers(), source, time, device);
     wheelEvent.setModifiersRelevantForGlobalShortcuts(input()->modifiersRelevantForGlobalShortcuts());
 
     input()->processSpies(std::bind(&InputEventSpy::wheelEvent, std::placeholders::_1, &wheelEvent));
 
     if (!inited()) {
         return;
     }
     input()->processFilters(std::bind(&InputEventFilter::wheelEvent, std::placeholders::_1, &wheelEvent));
 }
 
 void PointerInputRedirection::processSwipeGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
 
     input()->processSpies(std::bind(&InputEventSpy::swipeGestureBegin, std::placeholders::_1, fingerCount, time));
     input()->processFilters(std::bind(&InputEventFilter::swipeGestureBegin, std::placeholders::_1, fingerCount, time));
 }
 
 void PointerInputRedirection::processSwipeGestureUpdate(const QPointF &delta, std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::swipeGestureUpdate, std::placeholders::_1, delta, time));
     input()->processFilters(std::bind(&InputEventFilter::swipeGestureUpdate, std::placeholders::_1, delta, time));
 }
 
 void PointerInputRedirection::processSwipeGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::swipeGestureEnd, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::swipeGestureEnd, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processSwipeGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::swipeGestureCancelled, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::swipeGestureCancelled, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processPinchGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::pinchGestureBegin, std::placeholders::_1, fingerCount, time));
     input()->processFilters(std::bind(&InputEventFilter::pinchGestureBegin, std::placeholders::_1, fingerCount, time));
 }
 
 void PointerInputRedirection::processPinchGestureUpdate(qreal scale, qreal angleDelta, const QPointF &delta, std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::pinchGestureUpdate, std::placeholders::_1, scale, angleDelta, delta, time));
     input()->processFilters(std::bind(&InputEventFilter::pinchGestureUpdate, std::placeholders::_1, scale, angleDelta, delta, time));
 }
 
 void PointerInputRedirection::processPinchGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::pinchGestureEnd, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::pinchGestureEnd, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processPinchGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     input()->setLastInputHandler(this);
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::pinchGestureCancelled, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::pinchGestureCancelled, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processHoldGestureBegin(int fingerCount, std::chrono::microseconds time, KWin::InputDevice *device)
 {
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::holdGestureBegin, std::placeholders::_1, fingerCount, time));
     input()->processFilters(std::bind(&InputEventFilter::holdGestureBegin, std::placeholders::_1, fingerCount, time));
 }
 
 void PointerInputRedirection::processHoldGestureEnd(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::holdGestureEnd, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::holdGestureEnd, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processHoldGestureCancelled(std::chrono::microseconds time, KWin::InputDevice *device)
 {
     if (!inited()) {
         return;
     }
     update();
 
     input()->processSpies(std::bind(&InputEventSpy::holdGestureCancelled, std::placeholders::_1, time));
     input()->processFilters(std::bind(&InputEventFilter::holdGestureCancelled, std::placeholders::_1, time));
 }
 
 void PointerInputRedirection::processFrame(KWin::InputDevice *device)
 {
     if (!inited()) {
         return;
     }
 
     input()->processFilters(std::bind(&InputEventFilter::pointerFrame, std::placeholders::_1));
 }
 
 bool PointerInputRedirection::areButtonsPressed() const
 {
     for (auto state : m_buttons) {
         if (state == InputRedirection::PointerButtonPressed) {
             return true;
         }
     }
     return false;
 }
 
 bool PointerInputRedirection::focusUpdatesBlocked()
 {
     if (waylandServer()->seat()->isDragPointer()) {
         // ignore during drag and drop
         return true;
     }
     if (waylandServer()->seat()->isTouchSequence()) {
         // ignore during touch operations
         return true;
     }
     if (input()->isSelectingWindow()) {
         return true;
     }
     if (areButtonsPressed()) {
         return true;
     }
     return false;
 }
 
 void PointerInputRedirection::cleanupDecoration(Decoration::DecoratedClientImpl *old, Decoration::DecoratedClientImpl *now)
 {
     disconnect(m_decorationGeometryConnection);
     m_decorationGeometryConnection = QMetaObject::Connection();
 
     disconnect(m_decorationDestroyedConnection);
     m_decorationDestroyedConnection = QMetaObject::Connection();
 
     disconnect(m_decorationClosedConnection);
     m_decorationClosedConnection = QMetaObject::Connection();
 
     if (old) {
         // send leave event to old decoration
         QHoverEvent event(QEvent::HoverLeave, QPointF(-1, -1), QPointF());
         QCoreApplication::instance()->sendEvent(old->decoration(), &event);
     }
     if (!now) {
         // left decoration
         return;
     }
 
     auto pos = m_pos - now->window()->pos();
     QHoverEvent event(QEvent::HoverEnter, pos, QPointF(-1, -1));
     QCoreApplication::instance()->sendEvent(now->decoration(), &event);
     now->window()->processDecorationMove(pos, m_pos);
 
     m_decorationGeometryConnection = connect(decoration()->window(), &Window::frameGeometryChanged, this, [this]() {
         // ensure maximize button gets the leave event when maximizing/restore a window, see BUG 385140
         const auto oldDeco = decoration();
         update();
         if (oldDeco && oldDeco == decoration() && !decoration()->window()->isInteractiveMove() && !decoration()->window()->isInteractiveResize() && !areButtonsPressed()) {
             // position of window did not change, we need to send HoverMotion manually
             const QPointF p = m_pos - decoration()->window()->pos();
             QHoverEvent event(QEvent::HoverMove, p, p);
             QCoreApplication::instance()->sendEvent(decoration()->decoration(), &event);
         }
     });
 
     auto resetDecoration = [this]() {
         setDecoration(nullptr); // explicitly reset decoration if focus updates are blocked
         update();
     };
 
     m_decorationClosedConnection = connect(decoration()->window(), &Window::closed, this, resetDecoration);
     m_decorationDestroyedConnection = connect(now, &QObject::destroyed, this, resetDecoration);
 }
 
 void PointerInputRedirection::focusUpdate(Window *focusOld, Window *focusNow)
 {
     if (focusOld && focusOld->isClient()) {
         focusOld->pointerLeaveEvent();
         breakPointerConstraints(focusOld->surface());
         disconnectPointerConstraintsConnection();
     }
     disconnect(m_focusGeometryConnection);
     m_focusGeometryConnection = QMetaObject::Connection();
 
     if (focusNow && focusNow->isClient()) {
         focusNow->pointerEnterEvent(m_pos);
     }
 
     auto seat = waylandServer()->seat();
     if (!focusNow || !focusNow->surface()) {
         seat->notifyPointerLeave();
         return;
     }
 
     seat->notifyPointerEnter(focusNow->surface(), m_pos, focusNow->inputTransformation());
 
     m_focusGeometryConnection = connect(focusNow, &Window::inputTransformationChanged, this, [this]() {
         // TODO: why no assert possible?
         if (!focus()) {
             return;
         }
         // TODO: can we check on the window instead?
         if (workspace()->moveResizeWindow()) {
             // don't update while moving
             return;
         }
         auto seat = waylandServer()->seat();
         if (focus()->surface() != seat->focusedPointerSurface()) {
             return;
         }
         seat->setFocusedPointerSurfaceTransformation(focus()->inputTransformation());
     });
 
     m_constraintsConnection = connect(focusNow->surface(), &SurfaceInterface::pointerConstraintsChanged,
                                       this, &PointerInputRedirection::updatePointerConstraints);
     m_constraintsActivatedConnection = connect(workspace(), &Workspace::windowActivated,
                                                this, &PointerInputRedirection::updatePointerConstraints);
     updatePointerConstraints();
 }
 
 void PointerInputRedirection::breakPointerConstraints(SurfaceInterface *surface)
 {
     // cancel pointer constraints
     if (surface) {
         auto c = surface->confinedPointer();
         if (c && c->isConfined()) {
             c->setConfined(false);
         }
         auto l = surface->lockedPointer();
         if (l && l->isLocked()) {
             l->setLocked(false);
         }
     }
     disconnectConfinedPointerRegionConnection();
     m_confined = false;
     m_locked = false;
 }
 
 void PointerInputRedirection::disconnectConfinedPointerRegionConnection()
 {
     disconnect(m_confinedPointerRegionConnection);
     m_confinedPointerRegionConnection = QMetaObject::Connection();
 }
 
 void PointerInputRedirection::disconnectLockedPointerAboutToBeUnboundConnection()
 {
     disconnect(m_lockedPointerAboutToBeUnboundConnection);
     m_lockedPointerAboutToBeUnboundConnection = QMetaObject::Connection();
 }
 
 void PointerInputRedirection::disconnectPointerConstraintsConnection()
 {
     disconnect(m_constraintsConnection);
     m_constraintsConnection = QMetaObject::Connection();
 
     disconnect(m_constraintsActivatedConnection);
     m_constraintsActivatedConnection = QMetaObject::Connection();
 }
 
 void PointerInputRedirection::setEnableConstraints(bool set)
 {
     if (m_enableConstraints == set) {
         return;
     }
     m_enableConstraints = set;
     updatePointerConstraints();
 }
 
 void PointerInputRedirection::updatePointerConstraints()
 {
     if (!focus()) {
         return;
     }
     const auto s = focus()->surface();
     if (!s) {
         return;
     }
     if (s != waylandServer()->seat()->focusedPointerSurface()) {
         return;
     }
     if (!supportsWarping()) {
         return;
     }
     const bool canConstrain = m_enableConstraints && focus() == workspace()->activeWindow();
     const auto cf = s->confinedPointer();
     if (cf) {
         if (cf->isConfined()) {
             if (!canConstrain) {
                 cf->setConfined(false);
                 m_confined = false;
                 disconnectConfinedPointerRegionConnection();
             }
             return;
         }
         if (canConstrain && cf->region().contains(flooredPoint(focus()->mapToLocal(m_pos)))) {
             cf->setConfined(true);
             m_confined = true;
             m_confinedPointerRegionConnection = connect(cf, &ConfinedPointerV1Interface::regionChanged, this, [this]() {
                 if (!focus()) {
                     return;
                 }
                 const auto s = focus()->surface();
                 if (!s) {
                     return;
                 }
                 const auto cf = s->confinedPointer();
                 if (!cf->region().contains(flooredPoint(focus()->mapToLocal(m_pos)))) {
                     // pointer no longer in confined region, break the confinement
                     cf->setConfined(false);
                     m_confined = false;
                 } else {
                     if (!cf->isConfined()) {
                         cf->setConfined(true);
                         m_confined = true;
                     }
                 }
             });
             return;
         }
     } else {
         m_confined = false;
         disconnectConfinedPointerRegionConnection();
     }
     const auto lock = s->lockedPointer();
     if (lock) {
         if (lock->isLocked()) {
             if (!canConstrain) {
                 const auto hint = lock->cursorPositionHint();
                 lock->setLocked(false);
                 m_locked = false;
                 disconnectLockedPointerAboutToBeUnboundConnection();
                 if (!(hint.x() < 0 || hint.y() < 0) && focus()) {
                     processMotionAbsolute(focus()->mapFromLocal(hint), waylandServer()->seat()->timestamp());
                 }
             }
             return;
         }
         if (canConstrain && lock->region().contains(flooredPoint(focus()->mapToLocal(m_pos)))) {
             lock->setLocked(true);
             m_locked = true;
 
             // The client might cancel pointer locking from its side by unbinding the LockedPointerInterface.
             // In this case the cached cursor position hint must be fetched before the resource goes away
             m_lockedPointerAboutToBeUnboundConnection = connect(lock, &LockedPointerV1Interface::aboutToBeDestroyed, this, [this, lock]() {
                 const auto hint = lock->cursorPositionHint();
                 if (hint.x() < 0 || hint.y() < 0 || !focus()) {
                     return;
                 }
                 auto globalHint = focus()->mapFromLocal(hint);
 
                 // When the resource finally goes away, reposition the cursor according to the hint
                 connect(lock, &LockedPointerV1Interface::destroyed, this, [this, globalHint]() {
                     processMotionAbsolute(globalHint, waylandServer()->seat()->timestamp());
                 });
             });
             // TODO: connect to region change - is it needed at all? If the pointer is locked it's always in the region
         }
     } else {
         m_locked = false;
         disconnectLockedPointerAboutToBeUnboundConnection();
     }
 }
 
 QPointF PointerInputRedirection::applyPointerConfinement(const QPointF &pos) const
 {
     if (!focus()) {
         return pos;
     }
     auto s = focus()->surface();
     if (!s) {
         return pos;
     }
     auto cf = s->confinedPointer();
     if (!cf) {
         return pos;
     }
     if (!cf->isConfined()) {
         return pos;
     }
 
     const QPointF localPos = focus()->mapToLocal(pos);
     if (cf->region().contains(flooredPoint(localPos))) {
         return pos;
     }
 
     const QPointF currentPos = focus()->mapToLocal(m_pos);
 
     // allow either x or y to pass
     QPointF p(currentPos.x(), localPos.y());
     if (cf->region().contains(flooredPoint(p))) {
         return focus()->mapFromLocal(p);
     }
 
     p = QPointF(localPos.x(), currentPos.y());
     if (cf->region().contains(flooredPoint(p))) {
         return focus()->mapFromLocal(p);
     }
 
     return m_pos;
 }
 
 void PointerInputRedirection::updatePosition(const QPointF &pos)
 {
     if (m_locked) {
         // locked pointer should not move
         return;
     }
     // verify that at least one screen contains the pointer position
     const Output *currentOutput = workspace()->outputAt(pos);
     QPointF p = confineToBoundingBox(pos, currentOutput->geometry());
     p = applyPointerConfinement(p);
     if (p == m_pos) {
         // didn't change due to confinement
         return;
     }
     // verify screen confinement
     if (!screenContainsPos(p)) {
         return;
     }
 
     m_pos = p;
 
     workspace()->setActiveCursorOutput(m_pos);
     m_cursor->updateCursorOutputs(m_pos);
 
     Q_EMIT input()->globalPointerChanged(m_pos);
 }
 
 void PointerInputRedirection::updateButton(uint32_t button, InputRedirection::PointerButtonState state)
 {
     m_buttons[button] = state;
 
     // update Qt buttons
     m_qtButtons = Qt::NoButton;
     for (auto it = m_buttons.constBegin(); it != m_buttons.constEnd(); ++it) {
         if (it.value() == InputRedirection::PointerButtonReleased) {
             continue;
         }
         m_qtButtons |= buttonToQtMouseButton(it.key());
     }
 
     Q_EMIT input()->pointerButtonStateChanged(button, state);
 }
 
 void PointerInputRedirection::warp(const QPointF &pos)
 {
     if (supportsWarping()) {
         processMotionAbsolute(pos, waylandServer()->seat()->timestamp());
     }
 }
 
 bool PointerInputRedirection::supportsWarping() const
 {
     return inited();
 }
 
 void PointerInputRedirection::updateAfterScreenChange()
 {
     if (!inited()) {
         return;
     }
 
     Output *output = nullptr;
     if (m_lastOutputWasPlaceholder) {
         // previously we've positioned our pointer on a placeholder screen, try
         // to get us onto the real "primary" screen instead.
         output = workspace()->outputOrder().at(0);
     } else {
         if (screenContainsPos(m_pos)) {
             // pointer still on a screen
             return;
         }
 
         // pointer no longer on a screen, reposition to closes screen
         output = workspace()->outputAt(m_pos);
     }
 
     m_lastOutputWasPlaceholder = output->isPlaceholder();
     // TODO: better way to get timestamps
     processMotionAbsolute(output->geometry().center(), waylandServer()->seat()->timestamp());
 }
 
 QPointF PointerInputRedirection::position() const
 {
     return m_pos;
 }
 
 void PointerInputRedirection::setEffectsOverrideCursor(Qt::CursorShape shape)
 {
     if (!inited()) {
         return;
     }
     // current pointer focus window should get a leave event
     update();
     m_cursor->setEffectsOverrideCursor(shape);
 }
 
 void PointerInputRedirection::removeEffectsOverrideCursor()
 {
     if (!inited()) {
         return;
     }
     // cursor position might have changed while there was an effect in place
     update();
     m_cursor->removeEffectsOverrideCursor();
 }
 
 void PointerInputRedirection::setWindowSelectionCursor(const QByteArray &shape)
 {
     if (!inited()) {
         return;
     }
     // send leave to current pointer focus window
     updateToReset();
     m_cursor->setWindowSelectionCursor(shape);
 }
 
 void PointerInputRedirection::removeWindowSelectionCursor()
 {
     if (!inited()) {
         return;
     }
     update();
     m_cursor->removeWindowSelectionCursor();
 }
 
 CursorImage::CursorImage(PointerInputRedirection *parent)
     : QObject(parent)
     , m_pointer(parent)
 {
     m_effectsCursor = std::make_unique<ShapeCursorSource>();
     m_fallbackCursor = std::make_unique<ShapeCursorSource>();
     m_moveResizeCursor = std::make_unique<ShapeCursorSource>();
     m_windowSelectionCursor = std::make_unique<ShapeCursorSource>();
     m_decoration.cursor = std::make_unique<ShapeCursorSource>();
     m_serverCursor.surface = std::make_unique<SurfaceCursorSource>();
     m_serverCursor.shape = std::make_unique<ShapeCursorSource>();
 
 #if KWIN_BUILD_SCREENLOCKER
     if (waylandServer()->hasScreenLockerIntegration()) {
         connect(ScreenLocker::KSldApp::self(), &ScreenLocker::KSldApp::lockStateChanged, this, &CursorImage::reevaluteSource);
     }
 #endif
     connect(m_pointer, &PointerInputRedirection::decorationChanged, this, &CursorImage::updateDecoration);
     // connect the move resize of all window
     auto setupMoveResizeConnection = [this](Window *window) {
         connect(window, &Window::moveResizedChanged, this, &CursorImage::updateMoveResize);
         connect(window, &Window::moveResizeCursorChanged, this, &CursorImage::updateMoveResize);
     };
     const auto clients = workspace()->windows();
     std::for_each(clients.begin(), clients.end(), setupMoveResizeConnection);
     connect(workspace(), &Workspace::windowAdded, this, setupMoveResizeConnection);
 
     m_fallbackCursor->setShape(Qt::ArrowCursor);
 
     m_effectsCursor->setTheme(m_waylandImage.theme());
     m_fallbackCursor->setTheme(m_waylandImage.theme());
     m_moveResizeCursor->setTheme(m_waylandImage.theme());
     m_windowSelectionCursor->setTheme(m_waylandImage.theme());
     m_decoration.cursor->setTheme(m_waylandImage.theme());
     m_serverCursor.shape->setTheme(m_waylandImage.theme());
 
     connect(&m_waylandImage, &WaylandCursorImage::themeChanged, this, [this] {
         m_effectsCursor->setTheme(m_waylandImage.theme());
         m_fallbackCursor->setTheme(m_waylandImage.theme());
         m_moveResizeCursor->setTheme(m_waylandImage.theme());
         m_windowSelectionCursor->setTheme(m_waylandImage.theme());
         m_decoration.cursor->setTheme(m_waylandImage.theme());
         m_serverCursor.shape->setTheme(m_waylandImage.theme());
     });
 
     PointerInterface *pointer = waylandServer()->seat()->pointer();
 
     connect(pointer, &PointerInterface::focusedSurfaceChanged,
             this, &CursorImage::handleFocusedSurfaceChanged);
 
     reevaluteSource();
 }
 
 CursorImage::~CursorImage() = default;
 
 void CursorImage::updateCursorOutputs(const QPointF &pos)
 {
     if (m_currentSource == m_serverCursor.surface.get()) {
         auto cursorSurface = m_serverCursor.surface->surface();
         if (cursorSurface) {
             const QRectF cursorGeometry(pos - m_currentSource->hotspot(), m_currentSource->size());
             cursorSurface->setOutputs(waylandServer()->display()->outputsIntersecting(cursorGeometry.toAlignedRect()),
                                       waylandServer()->display()->largestIntersectingOutput(cursorGeometry.toAlignedRect()));
         }
     }
 }
 
 void CursorImage::markAsRendered(std::chrono::milliseconds timestamp)
 {
     if (m_currentSource == m_serverCursor.surface.get()) {
         if (auto cursorSurface = m_serverCursor.surface->surface()) {
             cursorSurface->traverseTree([&timestamp](SurfaceInterface *surface) {
                 surface->frameRendered(timestamp.count());
             });
         }
     }
 }
 
 void CursorImage::handleFocusedSurfaceChanged()
 {
     PointerInterface *pointer = waylandServer()->seat()->pointer();
     disconnect(m_serverCursor.connection);
 
     if (pointer->focusedSurface()) {
         m_serverCursor.connection = connect(pointer, &PointerInterface::cursorChanged,
                                             this, &CursorImage::updateServerCursor);
     } else {
         m_serverCursor.connection = QMetaObject::Connection();
         reevaluteSource();
     }
 }
 
 void CursorImage::updateDecoration()
 {
     disconnect(m_decoration.connection);
     auto deco = m_pointer->decoration();
     Window *window = deco ? deco->window() : nullptr;
     if (window) {
         m_decoration.connection = connect(window, &Window::moveResizeCursorChanged, this, &CursorImage::updateDecorationCursor);
     } else {
         m_decoration.connection = QMetaObject::Connection();
     }
     updateDecorationCursor();
 }
 
 void CursorImage::updateDecorationCursor()
 {
     auto deco = m_pointer->decoration();
     if (Window *window = deco ? deco->window() : nullptr) {
         m_decoration.cursor->setShape(window->cursor().name());
     }
     reevaluteSource();
 }
 
 void CursorImage::updateMoveResize()
 {
     if (Window *window = workspace()->moveResizeWindow()) {
         m_moveResizeCursor->setShape(window->cursor().name());
     }
     reevaluteSource();
 }
 
 void CursorImage::updateServerCursor(const PointerCursor &cursor)
 {
     if (auto surfaceCursor = std::get_if<PointerSurfaceCursor *>(&cursor)) {
         m_serverCursor.surface->update((*surfaceCursor)->surface(), (*surfaceCursor)->hotspot());
         m_serverCursor.cursor = m_serverCursor.surface.get();
     } else if (auto shapeCursor = std::get_if<QByteArray>(&cursor)) {
         m_serverCursor.shape->setShape(*shapeCursor);
         m_serverCursor.cursor = m_serverCursor.shape.get();
     }
     reevaluteSource();
 }
 
 void CursorImage::setEffectsOverrideCursor(Qt::CursorShape shape)
 {
     m_effectsCursor->setShape(shape);
     reevaluteSource();
 }
 
 void CursorImage::removeEffectsOverrideCursor()
 {
     reevaluteSource();
 }
 
 void CursorImage::setWindowSelectionCursor(const QByteArray &shape)
 {
     if (shape.isEmpty()) {
         m_windowSelectionCursor->setShape(Qt::CrossCursor);
     } else {
         m_windowSelectionCursor->setShape(shape);
     }
     reevaluteSource();
 }
 
 void CursorImage::removeWindowSelectionCursor()
 {
     reevaluteSource();
 }
 
 WaylandCursorImage::WaylandCursorImage(QObject *parent)
     : QObject(parent)
 {
     Cursor *pointerCursor = Cursors::self()->mouse();
     updateCursorTheme();
 
     connect(pointerCursor, &Cursor::themeChanged, this, &WaylandCursorImage::updateCursorTheme);
     connect(workspace(), &Workspace::outputsChanged, this, &WaylandCursorImage::updateCursorTheme);
 }
 
 KXcursorTheme WaylandCursorImage::theme() const
 {
     return m_cursorTheme;
 }
 
 void WaylandCursorImage::updateCursorTheme()
 {
     const Cursor *pointerCursor = Cursors::self()->mouse();
     qreal targetDevicePixelRatio = 1;
 
     const auto outputs = workspace()->outputs();
     for (const Output *output : outputs) {
         if (output->scale() > targetDevicePixelRatio) {
             targetDevicePixelRatio = output->scale();
         }
     }
 
     m_cursorTheme = KXcursorTheme(pointerCursor->themeName(), pointerCursor->themeSize(), targetDevicePixelRatio);
     if (m_cursorTheme.isEmpty()) {
         m_cursorTheme = KXcursorTheme(Cursor::defaultThemeName(), Cursor::defaultThemeSize(), targetDevicePixelRatio);
     }
 
     Q_EMIT themeChanged();
 }
 
 void CursorImage::reevaluteSource()
 {
     if (waylandServer()->isScreenLocked()) {
         setSource(m_serverCursor.cursor);
         return;
     }
     if (input()->isSelectingWindow()) {
         setSource(m_windowSelectionCursor.get());
         return;
     }
     if (effects && effects->isMouseInterception()) {
         setSource(m_effectsCursor.get());
         return;
     }
     if (workspace() && workspace()->moveResizeWindow()) {
         setSource(m_moveResizeCursor.get());
         return;
     }
     if (m_pointer->decoration()) {
         setSource(m_decoration.cursor.get());
         return;
     }
     const PointerInterface *pointer = waylandServer()->seat()->pointer();
     if (pointer && pointer->focusedSurface()) {
         setSource(m_serverCursor.cursor);
         return;
     }
     setSource(m_fallbackCursor.get());
 }
 
 CursorSource *CursorImage::source() const
 {
     return m_currentSource;
 }
 
 void CursorImage::setSource(CursorSource *source)
 {
     if (m_currentSource == source) {
         return;
     }
     m_currentSource = source;
     Q_EMIT changed();
 }
 
 KXcursorTheme CursorImage::theme() const
 {
     return m_waylandImage.theme();
 }
 
 InputRedirectionCursor::InputRedirectionCursor()
     : Cursor()
     , m_currentButtons(Qt::NoButton)
 {
     Cursors::self()->setMouse(this);
     connect(input(), &InputRedirection::globalPointerChanged,
             this, &InputRedirectionCursor::slotPosChanged);
     connect(input(), &InputRedirection::pointerButtonStateChanged,
             this, &InputRedirectionCursor::slotPointerButtonChanged);
 #ifndef KCMRULES
     connect(input(), &InputRedirection::keyboardModifiersChanged,
             this, &InputRedirectionCursor::slotModifiersChanged);
 #endif
 }
 
 InputRedirectionCursor::~InputRedirectionCursor()
 {
 }
 
 void InputRedirectionCursor::doSetPos()
 {
     if (input()->supportsPointerWarping()) {
         input()->warpPointer(currentPos());
     }
     slotPosChanged(input()->globalPointer());
     Q_EMIT posChanged(currentPos());
 }
 
 void InputRedirectionCursor::slotPosChanged(const QPointF &pos)
 {
     const QPointF oldPos = currentPos();
     updatePos(pos);
     Q_EMIT mouseChanged(pos, oldPos, m_currentButtons, m_currentButtons,
                         input()->keyboardModifiers(), input()->keyboardModifiers());
 }
 
 void InputRedirectionCursor::slotModifiersChanged(Qt::KeyboardModifiers mods, Qt::KeyboardModifiers oldMods)
 {
     Q_EMIT mouseChanged(currentPos(), currentPos(), m_currentButtons, m_currentButtons, mods, oldMods);
 }
 
 void InputRedirectionCursor::slotPointerButtonChanged()
 {
     const Qt::MouseButtons oldButtons = m_currentButtons;
     m_currentButtons = input()->qtButtonStates();
     const QPointF pos = currentPos();
     Q_EMIT mouseChanged(pos, pos, m_currentButtons, oldButtons, input()->keyboardModifiers(), input()->keyboardModifiers());
 }
 
 }
 
 #include "moc_pointer_input.cpp"