File indexing completed on 2024-04-28 05:30:16

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 1999, 2000 Matthias Ettrich <ettrich@kde.org>
     SPDX-FileCopyrightText: 2003 Lubos Lunak <l.lunak@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 /*
 
  This file contains things relevant to handling incoming events.
 
 */
 
 #include "atoms.h"
 #include "cursor.h"
 #include "effect/effecthandler.h"
 #include "focuschain.h"
 #include "group.h"
 #include "netinfo.h"
 #include "rules.h"
 #include "screenedge.h"
 #include "useractions.h"
 #include "utils/xcbutils.h"
 #include "wayland/surface.h"
 #include "wayland/xwaylandshell_v1.h"
 #include "wayland_server.h"
 #include "workspace.h"
 #include "x11window.h"
 
 #if KWIN_BUILD_TABBOX
 #include "tabbox/tabbox.h"
 #endif
 
 #include <KDecoration2/Decoration>
 
 #include <QApplication>
 #include <QDebug>
 #include <QHoverEvent>
 #include <QKeyEvent>
 #include <QMouseEvent>
 #include <QStyleHints>
 #include <QWheelEvent>
 
 #include <kkeyserver.h>
 
 #include <xcb/damage.h>
 #include <xcb/sync.h>
 #include <xcb/xcb_icccm.h>
 
 #include "compositor.h"
 #include "x11eventfilter.h"
 
 #ifndef XCB_GE_GENERIC
 #define XCB_GE_GENERIC 35
 typedef struct xcb_ge_generic_event_t
 {
     uint8_t response_type; /**<  */
     uint8_t extension; /**<  */
     uint16_t sequence; /**<  */
     uint32_t length; /**<  */
     uint16_t event_type; /**<  */
     uint8_t pad0[22]; /**<  */
     uint32_t full_sequence; /**<  */
 } xcb_ge_generic_event_t;
 #endif
 
 namespace KWin
 {
 
 // ****************************************
 // Workspace
 // ****************************************
 
 static xcb_window_t findEventWindow(xcb_generic_event_t *event)
 {
     const uint8_t eventType = event->response_type & ~0x80;
     switch (eventType) {
     case XCB_KEY_PRESS:
     case XCB_KEY_RELEASE:
         return reinterpret_cast<xcb_key_press_event_t *>(event)->event;
     case XCB_BUTTON_PRESS:
     case XCB_BUTTON_RELEASE:
         return reinterpret_cast<xcb_button_press_event_t *>(event)->event;
     case XCB_MOTION_NOTIFY:
         return reinterpret_cast<xcb_motion_notify_event_t *>(event)->event;
     case XCB_ENTER_NOTIFY:
     case XCB_LEAVE_NOTIFY:
         return reinterpret_cast<xcb_enter_notify_event_t *>(event)->event;
     case XCB_FOCUS_IN:
     case XCB_FOCUS_OUT:
         return reinterpret_cast<xcb_focus_in_event_t *>(event)->event;
     case XCB_EXPOSE:
         return reinterpret_cast<xcb_expose_event_t *>(event)->window;
     case XCB_GRAPHICS_EXPOSURE:
         return reinterpret_cast<xcb_graphics_exposure_event_t *>(event)->drawable;
     case XCB_NO_EXPOSURE:
         return reinterpret_cast<xcb_no_exposure_event_t *>(event)->drawable;
     case XCB_VISIBILITY_NOTIFY:
         return reinterpret_cast<xcb_visibility_notify_event_t *>(event)->window;
     case XCB_CREATE_NOTIFY:
         return reinterpret_cast<xcb_create_notify_event_t *>(event)->window;
     case XCB_DESTROY_NOTIFY:
         return reinterpret_cast<xcb_destroy_notify_event_t *>(event)->window;
     case XCB_UNMAP_NOTIFY:
         return reinterpret_cast<xcb_unmap_notify_event_t *>(event)->window;
     case XCB_MAP_NOTIFY:
         return reinterpret_cast<xcb_map_notify_event_t *>(event)->window;
     case XCB_MAP_REQUEST:
         return reinterpret_cast<xcb_map_request_event_t *>(event)->window;
     case XCB_REPARENT_NOTIFY:
         return reinterpret_cast<xcb_reparent_notify_event_t *>(event)->window;
     case XCB_CONFIGURE_NOTIFY:
         return reinterpret_cast<xcb_configure_notify_event_t *>(event)->window;
     case XCB_CONFIGURE_REQUEST:
         return reinterpret_cast<xcb_configure_request_event_t *>(event)->window;
     case XCB_GRAVITY_NOTIFY:
         return reinterpret_cast<xcb_gravity_notify_event_t *>(event)->window;
     case XCB_RESIZE_REQUEST:
         return reinterpret_cast<xcb_resize_request_event_t *>(event)->window;
     case XCB_CIRCULATE_NOTIFY:
     case XCB_CIRCULATE_REQUEST:
         return reinterpret_cast<xcb_circulate_notify_event_t *>(event)->window;
     case XCB_PROPERTY_NOTIFY:
         return reinterpret_cast<xcb_property_notify_event_t *>(event)->window;
     case XCB_COLORMAP_NOTIFY:
         return reinterpret_cast<xcb_colormap_notify_event_t *>(event)->window;
     case XCB_CLIENT_MESSAGE:
         return reinterpret_cast<xcb_client_message_event_t *>(event)->window;
     default:
         // extension handling
         if (eventType == Xcb::Extensions::self()->shapeNotifyEvent()) {
             return reinterpret_cast<xcb_shape_notify_event_t *>(event)->affected_window;
         }
         if (eventType == Xcb::Extensions::self()->damageNotifyEvent()) {
             return reinterpret_cast<xcb_damage_notify_event_t *>(event)->drawable;
         }
         return XCB_WINDOW_NONE;
     }
 }
 
 /**
  * Handles workspace specific XCB event
  */
 bool Workspace::workspaceEvent(xcb_generic_event_t *e)
 {
     const uint8_t eventType = e->response_type & ~0x80;
 
     const xcb_window_t eventWindow = findEventWindow(e);
     if (eventWindow != XCB_WINDOW_NONE) {
         if (X11Window *window = findClient(Predicate::WindowMatch, eventWindow)) {
             if (window->windowEvent(e)) {
                 return true;
             }
         } else if (X11Window *window = findClient(Predicate::WrapperIdMatch, eventWindow)) {
             if (window->windowEvent(e)) {
                 return true;
             }
         } else if (X11Window *window = findClient(Predicate::FrameIdMatch, eventWindow)) {
             if (window->windowEvent(e)) {
                 return true;
             }
         } else if (X11Window *window = findClient(Predicate::InputIdMatch, eventWindow)) {
             if (window->windowEvent(e)) {
                 return true;
             }
         } else if (X11Window *window = findUnmanaged(eventWindow)) {
             if (window->windowEvent(e)) {
                 return true;
             }
         }
     }
 
     switch (eventType) {
     case XCB_CREATE_NOTIFY: {
         const auto *event = reinterpret_cast<xcb_create_notify_event_t *>(e);
         if (event->parent == kwinApp()->x11RootWindow() && !QWidget::find(event->window) && !event->override_redirect) {
             // see comments for allowWindowActivation()
             kwinApp()->updateXTime();
             const xcb_timestamp_t t = xTime();
             xcb_change_property(kwinApp()->x11Connection(), XCB_PROP_MODE_REPLACE, event->window, atoms->kde_net_wm_user_creation_time, XCB_ATOM_CARDINAL, 32, 1, &t);
         }
         break;
     }
     case XCB_UNMAP_NOTIFY: {
         const auto *event = reinterpret_cast<xcb_unmap_notify_event_t *>(e);
         return (event->event != event->window); // hide wm typical event from Qt
     }
     case XCB_REPARENT_NOTIFY: {
         // do not confuse Qt with these events. After all, _we_ are the
         // window manager who does the reparenting.
         return true;
     }
     case XCB_MAP_REQUEST: {
         kwinApp()->updateXTime();
 
         const auto *event = reinterpret_cast<xcb_map_request_event_t *>(e);
         if (X11Window *window = findClient(Predicate::WindowMatch, event->window)) {
             // e->xmaprequest.window is different from e->xany.window
             // TODO this shouldn't be necessary now
             window->windowEvent(e);
             m_focusChain->update(window, FocusChain::Update);
         } else if (true /*|| e->xmaprequest.parent != root */) {
             // NOTICE don't check for the parent being the root window, this breaks when some app unmaps
             // a window, changes something and immediately maps it back, without giving KWin
             // a chance to reparent it back to root
             // since KWin can get MapRequest only for root window children and
             // children of WindowWrapper (=clients), the check is AFAIK useless anyway
             // NOTICE: The save-set support in X11Window::mapRequestEvent() actually requires that
             // this code doesn't check the parent to be root.
             if (!createX11Window(event->window, false)) {
                 xcb_map_window(kwinApp()->x11Connection(), event->window);
                 const uint32_t values[] = {XCB_STACK_MODE_ABOVE};
                 xcb_configure_window(kwinApp()->x11Connection(), event->window, XCB_CONFIG_WINDOW_STACK_MODE, values);
             }
         }
         return true;
     }
     case XCB_MAP_NOTIFY: {
         const auto *event = reinterpret_cast<xcb_map_notify_event_t *>(e);
         if (event->override_redirect) {
             X11Window *window = findUnmanaged(event->window);
             if (window == nullptr) {
                 window = createUnmanaged(event->window);
             }
             if (window) {
                 // if hasScheduledRelease is true, it means a unamp and map sequence has occurred.
                 // since release is scheduled after map notify, this old Unmanaged will get released
                 // before KWIN has chance to remanage it again. so release it right now.
                 if (window->hasScheduledRelease()) {
                     window->releaseWindow();
                     window = createUnmanaged(event->window);
                 }
                 if (window) {
                     return window->windowEvent(e);
                 }
             }
         }
         return (event->event != event->window); // hide wm typical event from Qt
     }
 
     case XCB_CONFIGURE_REQUEST: {
         const auto *event = reinterpret_cast<xcb_configure_request_event_t *>(e);
         if (event->parent == kwinApp()->x11RootWindow()) {
             uint32_t values[5] = {0, 0, 0, 0, 0};
             const uint32_t value_mask = event->value_mask
                 & (XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_BORDER_WIDTH);
             int i = 0;
             if (value_mask & XCB_CONFIG_WINDOW_X) {
                 values[i++] = event->x;
             }
             if (value_mask & XCB_CONFIG_WINDOW_Y) {
                 values[i++] = event->y;
             }
             if (value_mask & XCB_CONFIG_WINDOW_WIDTH) {
                 values[i++] = event->width;
             }
             if (value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
                 values[i++] = event->height;
             }
             if (value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) {
                 values[i++] = event->border_width;
             }
             xcb_configure_window(kwinApp()->x11Connection(), event->window, value_mask, values);
             return true;
         }
         break;
     }
     case XCB_CONFIGURE_NOTIFY: {
         const auto configureNotifyEvent = reinterpret_cast<xcb_configure_notify_event_t *>(e);
         if (configureNotifyEvent->override_redirect && configureNotifyEvent->event == kwinApp()->x11RootWindow()) {
             updateXStackingOrder();
         }
         break;
     }
     case XCB_FOCUS_IN: {
         const auto *event = reinterpret_cast<xcb_focus_in_event_t *>(e);
         if (event->event == kwinApp()->x11RootWindow()
             && (event->detail == XCB_NOTIFY_DETAIL_NONE || event->detail == XCB_NOTIFY_DETAIL_POINTER_ROOT || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)) {
             Xcb::CurrentInput currentInput;
             kwinApp()->updateXTime(); // focusToNull() uses xTime(), which is old now (FocusIn has no timestamp)
             // it seems we can "loose" focus reversions when the closing window hold a grab
             // => catch the typical pattern (though we don't want the focus on the root anyway) #348935
             const bool lostFocusPointerToRoot = currentInput->focus == kwinApp()->x11RootWindow() && event->detail == XCB_NOTIFY_DETAIL_INFERIOR;
             if (!currentInput.isNull() && (currentInput->focus == XCB_WINDOW_NONE || currentInput->focus == XCB_INPUT_FOCUS_POINTER_ROOT || lostFocusPointerToRoot)) {
                 // kWarning( 1212 ) << "X focus set to None/PointerRoot, reseting focus" ;
                 Window *window = mostRecentlyActivatedWindow();
                 if (window != nullptr) {
                     requestFocus(window, true);
                 } else if (activateNextWindow(nullptr)) {
                     ; // ok, activated
                 } else {
                     focusToNull();
                 }
             }
         }
     }
         // fall through
     case XCB_FOCUS_OUT:
         return true; // always eat these, they would tell Qt that KWin is the active app
     default:
         break;
     }
     return false;
 }
 
 // ****************************************
 // Client
 // ****************************************
 
 /**
  * General handler for XEvents concerning the client window
  */
 bool X11Window::windowEvent(xcb_generic_event_t *e)
 {
     if (isUnmanaged()) {
         NET::Properties dirtyProperties;
         NET::Properties2 dirtyProperties2;
         info->event(e, &dirtyProperties, &dirtyProperties2); // pass through the NET stuff
         if (dirtyProperties2 & NET::WM2Opacity) {
             if (Compositor::compositing()) {
                 setOpacity(info->opacityF());
             }
         }
         if (dirtyProperties2 & NET::WM2OpaqueRegion) {
             getWmOpaqueRegion();
         }
         if (dirtyProperties2.testFlag(NET::WM2WindowRole)) {
             Q_EMIT windowRoleChanged();
         }
         if (dirtyProperties2.testFlag(NET::WM2WindowClass)) {
             getResourceClass();
         }
         const uint8_t eventType = e->response_type & ~0x80;
         switch (eventType) {
         case XCB_DESTROY_NOTIFY:
             destroyWindow();
             break;
         case XCB_UNMAP_NOTIFY: {
             workspace()->updateFocusMousePosition(Cursors::self()->mouse()->pos()); // may cause leave event
 
             // unmap notify might have been emitted due to a destroy notify
             // but unmap notify gets emitted before the destroy notify, nevertheless at this
             // point the window is already destroyed. This means any XCB request with the window
             // will cause an error.
             // To not run into these errors we try to wait for the destroy notify. For this we
             // generate a round trip to the X server and wait a very short time span before
             // handling the release.
             kwinApp()->updateXTime();
             // using 1 msec to not just move it at the end of the event loop but add an very short
             // timespan to cover cases like unmap() followed by destroy(). The only other way to
             // ensure that the window is not destroyed when we do the release handling is to grab
             // the XServer which we do not want to do for an Unmanaged. The timespan of 1 msec is
             // short enough to not cause problems in the close window animations.
             // It's of course still possible that we miss the destroy in which case non-fatal
             // X errors are reported to the event loop and logged by Qt.
             m_releaseTimer.start(1);
             break;
         }
         case XCB_CONFIGURE_NOTIFY:
             configureNotifyEvent(reinterpret_cast<xcb_configure_notify_event_t *>(e));
             break;
         case XCB_PROPERTY_NOTIFY:
             propertyNotifyEvent(reinterpret_cast<xcb_property_notify_event_t *>(e));
             break;
         case XCB_CLIENT_MESSAGE:
             clientMessageEvent(reinterpret_cast<xcb_client_message_event_t *>(e));
             break;
         default: {
             if (eventType == Xcb::Extensions::self()->shapeNotifyEvent()) {
                 detectShape();
                 Q_EMIT shapeChanged();
             }
             if (eventType == Xcb::Extensions::self()->damageNotifyEvent()) {
                 damageNotifyEvent();
             }
             break;
         }
         }
         return false; // don't eat events, even our own unmanaged widgets are tracked
     }
 
     if (findEventWindow(e) == window()) { // avoid doing stuff on frame or wrapper
         NET::Properties dirtyProperties;
         NET::Properties2 dirtyProperties2;
         info->event(e, &dirtyProperties, &dirtyProperties2); // pass through the NET stuff
 
         if ((dirtyProperties & NET::WMName) != 0) {
             fetchName();
         }
         if ((dirtyProperties & NET::WMIconName) != 0) {
             fetchIconicName();
         }
         if ((dirtyProperties & NET::WMStrut) != 0
             || (dirtyProperties2 & NET::WM2ExtendedStrut) != 0) {
             workspace()->updateClientArea();
         }
         if ((dirtyProperties & NET::WMIcon) != 0) {
             getIcons();
         }
         // Note there's a difference between userTime() and info->userTime()
         // info->userTime() is the value of the property, userTime() also includes
         // updates of the time done by KWin (ButtonPress on windowrapper etc.).
         if ((dirtyProperties2 & NET::WM2UserTime) != 0) {
             workspace()->setWasUserInteraction();
             updateUserTime(info->userTime());
         }
         if ((dirtyProperties2 & NET::WM2StartupId) != 0) {
             startupIdChanged();
         }
         if (dirtyProperties2 & NET::WM2Opacity) {
             if (Compositor::compositing()) {
                 setOpacity(info->opacityF());
             } else {
                 // forward to the frame if there's possibly another compositing manager running
                 NETWinInfo i(kwinApp()->x11Connection(), frameId(), kwinApp()->x11RootWindow(), NET::Properties(), NET::Properties2());
                 i.setOpacity(info->opacity());
             }
         }
         if (dirtyProperties2.testFlag(NET::WM2WindowRole)) {
             Q_EMIT windowRoleChanged();
         }
         if (dirtyProperties2.testFlag(NET::WM2WindowClass)) {
             getResourceClass();
         }
         if (dirtyProperties2.testFlag(NET::WM2BlockCompositing)) {
             setBlockingCompositing(info->isBlockingCompositing());
         }
         if (dirtyProperties2.testFlag(NET::WM2GroupLeader)) {
             checkGroup();
             updateAllowedActions(); // Group affects isMinimizable()
         }
         if (dirtyProperties2.testFlag(NET::WM2Urgency)) {
             updateUrgency();
         }
         if (dirtyProperties2 & NET::WM2OpaqueRegion) {
             getWmOpaqueRegion();
         }
         if (dirtyProperties2 & NET::WM2DesktopFileName) {
             setDesktopFileName(QString::fromUtf8(info->desktopFileName()));
         }
         if (dirtyProperties2 & NET::WM2GTKFrameExtents) {
             setClientFrameExtents(info->gtkFrameExtents());
         }
     }
 
     const uint8_t eventType = e->response_type & ~0x80;
     switch (eventType) {
     case XCB_UNMAP_NOTIFY:
         unmapNotifyEvent(reinterpret_cast<xcb_unmap_notify_event_t *>(e));
         break;
     case XCB_DESTROY_NOTIFY:
         destroyNotifyEvent(reinterpret_cast<xcb_destroy_notify_event_t *>(e));
         break;
     case XCB_MAP_REQUEST:
         // this one may pass the event to workspace
         return mapRequestEvent(reinterpret_cast<xcb_map_request_event_t *>(e));
     case XCB_CONFIGURE_REQUEST:
         configureRequestEvent(reinterpret_cast<xcb_configure_request_event_t *>(e));
         break;
     case XCB_PROPERTY_NOTIFY:
         propertyNotifyEvent(reinterpret_cast<xcb_property_notify_event_t *>(e));
         break;
     case XCB_KEY_PRESS:
         updateUserTime(reinterpret_cast<xcb_key_press_event_t *>(e)->time);
         break;
     case XCB_BUTTON_PRESS: {
         const auto *event = reinterpret_cast<xcb_button_press_event_t *>(e);
         updateUserTime(event->time);
         buttonPressEvent(event->event, event->detail, event->state,
                          event->event_x, event->event_y, event->root_x, event->root_y, event->time);
         break;
     }
     case XCB_KEY_RELEASE:
         // don't update user time on releases
         // e.g. if the user presses Alt+F2, the Alt release
         // would appear as user input to the currently active window
         break;
     case XCB_BUTTON_RELEASE: {
         const auto *event = reinterpret_cast<xcb_button_release_event_t *>(e);
         // don't update user time on releases
         // e.g. if the user presses Alt+F2, the Alt release
         // would appear as user input to the currently active window
         buttonReleaseEvent(event->event, event->detail, event->state,
                            event->event_x, event->event_y, event->root_x, event->root_y);
         break;
     }
     case XCB_MOTION_NOTIFY: {
         const auto *event = reinterpret_cast<xcb_motion_notify_event_t *>(e);
 
         int x = Xcb::fromXNative(event->event_x);
         int y = Xcb::fromXNative(event->event_y);
         int root_x = Xcb::fromXNative(event->root_x);
         int root_y = Xcb::fromXNative(event->root_y);
 
         motionNotifyEvent(event->event, event->state,
                           x, y, root_x, root_y);
         workspace()->updateFocusMousePosition(QPointF(root_x, root_y));
         break;
     }
     case XCB_ENTER_NOTIFY: {
         auto *event = reinterpret_cast<xcb_enter_notify_event_t *>(e);
         enterNotifyEvent(event);
         // MotionNotify is guaranteed to be generated only if the mouse
         // move start and ends in the window; for cases when it only
         // starts or only ends there, Enter/LeaveNotify are generated.
         // Fake a MotionEvent in such cases to make handle of mouse
         // events simpler (Qt does that too).
         int x = Xcb::fromXNative(event->event_x);
         int y = Xcb::fromXNative(event->event_y);
         int root_x = Xcb::fromXNative(event->root_x);
         int root_y = Xcb::fromXNative(event->root_y);
 
         motionNotifyEvent(event->event, event->state,
                           x, y, root_x, root_y);
         workspace()->updateFocusMousePosition(QPointF(root_x, root_y));
         break;
     }
     case XCB_LEAVE_NOTIFY: {
         auto *event = reinterpret_cast<xcb_leave_notify_event_t *>(e);
 
         int x = Xcb::fromXNative(event->event_x);
         int y = Xcb::fromXNative(event->event_y);
         int root_x = Xcb::fromXNative(event->root_x);
         int root_y = Xcb::fromXNative(event->root_y);
         motionNotifyEvent(event->event, event->state,
                           x, y, root_x, root_y);
         leaveNotifyEvent(event);
         // not here, it'd break following enter notify handling
         // workspace()->updateFocusMousePosition( QPoint( e->xcrossing.x_root, e->xcrossing.y_root ));
         break;
     }
     case XCB_FOCUS_IN:
         focusInEvent(reinterpret_cast<xcb_focus_in_event_t *>(e));
         break;
     case XCB_FOCUS_OUT:
         focusOutEvent(reinterpret_cast<xcb_focus_out_event_t *>(e));
         break;
     case XCB_REPARENT_NOTIFY:
         break;
     case XCB_CLIENT_MESSAGE:
         clientMessageEvent(reinterpret_cast<xcb_client_message_event_t *>(e));
         break;
     case XCB_EXPOSE: {
         xcb_expose_event_t *event = reinterpret_cast<xcb_expose_event_t *>(e);
         if (event->window == frameId() && !Compositor::self()->isActive()) {
             // TODO: only repaint required areas
             triggerDecorationRepaint();
         }
         break;
     }
     default:
         if (eventType == Xcb::Extensions::self()->shapeNotifyEvent() && reinterpret_cast<xcb_shape_notify_event_t *>(e)->affected_window == window()) {
             detectShape(); // workaround for #19644
             updateShape();
         }
         if (eventType == Xcb::Extensions::self()->damageNotifyEvent() && reinterpret_cast<xcb_damage_notify_event_t *>(e)->drawable == frameId()) {
             damageNotifyEvent();
         }
         break;
     }
     return true; // eat all events
 }
 
 /**
  * Handles map requests of the client window
  */
 bool X11Window::mapRequestEvent(xcb_map_request_event_t *e)
 {
     if (e->window != window()) {
         // Special support for the save-set feature, which is a bit broken.
         // If there's a window from one client embedded in another one,
         // e.g. using XEMBED, and the embedder suddenly loses its X connection,
         // save-set will reparent the embedded window to its closest ancestor
         // that will remains. Unfortunately, with reparenting window managers,
         // this is not the root window, but the frame (or in KWin's case,
         // it's the wrapper for the client window). In this case,
         // the wrapper will get ReparentNotify for a window it won't know,
         // which will be ignored, and then it gets MapRequest, as save-set
         // always maps. Returning true here means that Workspace::workspaceEvent()
         // will handle this MapRequest and manage this window (i.e. act as if
         // it was reparented to root window).
         if (e->parent == wrapperId()) {
             return false;
         }
         return true; // no messing with frame etc.
     }
     // also copied in clientMessage()
     if (isMinimized()) {
         setMinimized(false);
     }
     if (isShade()) {
         setShade(ShadeNone);
     }
     if (!isOnCurrentDesktop()) {
         if (allowWindowActivation()) {
             workspace()->activateWindow(this);
         } else {
             demandAttention();
         }
     }
     return true;
 }
 
 /**
  * Handles unmap notify events of the client window
  */
 void X11Window::unmapNotifyEvent(xcb_unmap_notify_event_t *e)
 {
     if (e->window != window()) {
         return;
     }
     if (e->event != wrapperId()) {
         // most probably event from root window when initially reparenting
         bool ignore = true;
         if (e->event == kwinApp()->x11RootWindow() && (e->response_type & 0x80)) {
             ignore = false; // XWithdrawWindow()
         }
         if (ignore) {
             return;
         }
     }
 
     // check whether this is result of an XReparentWindow - window then won't be parented by wrapper
     // in this case do not release the window (causes reparent to root, removal from saveSet and what not)
     // but just destroy the window
     Xcb::Tree tree(m_client);
     xcb_window_t daddy = tree.parent();
     if (daddy == m_wrapper) {
         releaseWindow(); // unmapped from a regular window state
     } else {
         destroyWindow(); // the window was moved to some other parent
     }
 }
 
 void X11Window::destroyNotifyEvent(xcb_destroy_notify_event_t *e)
 {
     if (e->window != window()) {
         return;
     }
     destroyWindow();
 }
 
 /**
  * Handles client messages for the client window
  */
 void X11Window::clientMessageEvent(xcb_client_message_event_t *e)
 {
     if (e->type == atoms->wl_surface_serial) {
         m_surfaceSerial = (uint64_t(e->data.data32[1]) << 32) | e->data.data32[0];
         if (auto w = waylandServer()) {
             if (XwaylandSurfaceV1Interface *xwaylandSurface = w->xwaylandShell()->findSurface(m_surfaceSerial)) {
                 setSurface(xwaylandSurface->surface());
             }
         }
     } else if (e->type == atoms->wl_surface_id) {
         m_pendingSurfaceId = e->data.data32[0];
         if (auto w = waylandServer()) {
             if (auto s = SurfaceInterface::get(m_pendingSurfaceId, w->xWaylandConnection())) {
                 setSurface(s);
             }
         }
     }
 
     if (e->window != window()) {
         return; // ignore frame/wrapper
     }
     // WM_STATE
     if (e->type == atoms->wm_change_state) {
         if (e->data.data32[0] == XCB_ICCCM_WM_STATE_ICONIC) {
             setMinimized(true);
         }
         return;
     }
 }
 
 void X11Window::configureNotifyEvent(xcb_configure_notify_event_t *e)
 {
     if (effects) {
         effects->checkInputWindowStacking(); // keep them on top
     }
     QRectF newgeom(Xcb::fromXNative(e->x), Xcb::fromXNative(e->y), Xcb::fromXNative(e->width), Xcb::fromXNative(e->height));
     if (newgeom != m_frameGeometry) {
         Q_EMIT frameGeometryAboutToChange();
 
         QRectF old = m_frameGeometry;
         m_clientGeometry = newgeom;
         m_frameGeometry = newgeom;
         m_bufferGeometry = newgeom;
         checkOutput();
         Q_EMIT bufferGeometryChanged(old);
         Q_EMIT clientGeometryChanged(old);
         Q_EMIT frameGeometryChanged(old);
         Q_EMIT shapeChanged();
     }
 }
 
 /**
  * Handles configure  requests of the client window
  */
 void X11Window::configureRequestEvent(xcb_configure_request_event_t *e)
 {
     if (e->window != window()) {
         return; // ignore frame/wrapper
     }
     if (isInteractiveResize() || isInteractiveMove()) {
         return; // we have better things to do right now
     }
 
     if (m_fullscreenMode == FullScreenNormal) { // refuse resizing of fullscreen windows
         // but allow resizing fullscreen hacks in order to let them cancel fullscreen mode
         sendSyntheticConfigureNotify();
         return;
     }
     if (isSplash()) { // no manipulations with splashscreens either
         sendSyntheticConfigureNotify();
         return;
     }
 
     if (e->value_mask & XCB_CONFIG_WINDOW_BORDER_WIDTH) {
         // first, get rid of a window border
         m_client.setBorderWidth(0);
     }
 
     if (e->value_mask & (XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_WIDTH)) {
         configureRequest(e->value_mask, Xcb::fromXNative(e->x),
                          Xcb::fromXNative(e->y), Xcb::fromXNative(e->width), Xcb::fromXNative(e->height), 0, false);
     }
     if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE) {
         restackWindow(e->sibling, e->stack_mode, NET::FromApplication, userTime(), false);
     }
 
     // Sending a synthetic configure notify always is fine, even in cases where
     // the ICCCM doesn't require this - it can be though of as 'the WM decided to move
     // the window later'. The window should not cause that many configure request,
     // so this should not have any significant impact. With user moving/resizing
     // the it should be optimized though (see also X11Window::setGeometry()/resize()/move()).
     sendSyntheticConfigureNotify();
 
     // SELI TODO accept configure requests for isDesktop windows (because kdesktop
     // may get XRANDR resize event before kwin), but check it's still at the bottom?
 }
 
 /**
  * Handles property changes of the client window
  */
 void X11Window::propertyNotifyEvent(xcb_property_notify_event_t *e)
 {
     if (e->window != window()) {
         return; // ignore frame/wrapper
     }
     switch (e->atom) {
     case XCB_ATOM_WM_NORMAL_HINTS:
         getWmNormalHints();
         break;
     case XCB_ATOM_WM_NAME:
         fetchName();
         break;
     case XCB_ATOM_WM_ICON_NAME:
         fetchIconicName();
         break;
     case XCB_ATOM_WM_TRANSIENT_FOR:
         readTransient();
         break;
     case XCB_ATOM_WM_HINTS:
         getIcons(); // because KWin::icon() uses WMHints as fallback
         break;
     default:
         if (e->atom == atoms->motif_wm_hints) {
             getMotifHints();
         } else if (e->atom == atoms->net_wm_sync_request_counter) {
             getSyncCounter();
         } else if (e->atom == atoms->activities) {
             checkActivities();
         } else if (e->atom == atoms->kde_color_sheme) {
             updateColorScheme();
         } else if (e->atom == atoms->kde_screen_edge_show) {
             updateShowOnScreenEdge();
         } else if (e->atom == atoms->kde_net_wm_appmenu_service_name) {
             checkApplicationMenuServiceName();
         } else if (e->atom == atoms->kde_net_wm_appmenu_object_path) {
             checkApplicationMenuObjectPath();
         } else if (e->atom == atoms->wm_client_leader) {
             getWmClientLeader();
         } else if (e->atom == atoms->kde_net_wm_shadow) {
             updateShadow();
         } else if (e->atom == atoms->kde_skip_close_animation) {
             getSkipCloseAnimation();
         }
         break;
     }
 }
 
 void X11Window::enterNotifyEvent(xcb_enter_notify_event_t *e)
 {
     if (waylandServer()) {
         return;
     }
     if (e->event != frameId()) {
         return; // care only about entering the whole frame
     }
 
     const bool mouseDrivenFocus = !options->focusPolicyIsReasonable() || (options->focusPolicy() == Options::FocusFollowsMouse && options->isNextFocusPrefersMouse());
     if (e->mode == XCB_NOTIFY_MODE_NORMAL || (e->mode == XCB_NOTIFY_MODE_UNGRAB && mouseDrivenFocus)) {
         pointerEnterEvent(QPoint(e->root_x, e->root_y));
         return;
     }
 }
 
 void X11Window::leaveNotifyEvent(xcb_leave_notify_event_t *e)
 {
     if (waylandServer()) {
         return;
     }
     if (e->event != frameId()) {
         return; // care only about leaving the whole frame
     }
     if (e->mode == XCB_NOTIFY_MODE_NORMAL) {
         if (!isInteractiveMoveResizePointerButtonDown()) {
             setInteractiveMoveResizeGravity(Gravity::None);
             updateCursor();
         }
         bool lostMouse = !exclusiveContains(rect(), QPointF(e->event_x, e->event_y));
         // 'lostMouse' wouldn't work with e.g. B2 or Keramik, which have non-rectangular decorations
         // (i.e. the LeaveNotify event comes before leaving the rect and no LeaveNotify event
         // comes after leaving the rect) - so lets check if the pointer is really outside the window
 
         // TODO this still sucks if a window appears above this one - it should lose the mouse
         // if this window is another window, but not if it's a popup ... maybe after KDE3.1 :(
         // (repeat after me 'AARGHL!')
         if (!lostMouse && e->detail != XCB_NOTIFY_DETAIL_INFERIOR) {
             Xcb::Pointer pointer(frameId());
             if (!pointer || !pointer->same_screen || pointer->child == XCB_WINDOW_NONE) {
                 // really lost the mouse
                 lostMouse = true;
             }
         }
         if (lostMouse) {
             pointerLeaveEvent();
             if (isDecorated()) {
                 // sending a move instead of a leave. With leave we need to send proper coords, with move it's handled internally
                 QHoverEvent leaveEvent(QEvent::HoverMove, QPointF(-1, -1), QPointF(-1, -1), Qt::NoModifier);
                 QCoreApplication::sendEvent(decoration(), &leaveEvent);
             }
         }
         if (options->focusPolicy() == Options::FocusStrictlyUnderMouse && isActive() && lostMouse) {
             workspace()->requestDelayFocus(nullptr);
         }
         return;
     }
 }
 
 static uint16_t x11CommandAllModifier()
 {
     switch (options->commandAllModifier()) {
     case Qt::MetaModifier:
         return KKeyServer::modXMeta();
     case Qt::AltModifier:
         return KKeyServer::modXAlt();
     default:
         return 0;
     }
 }
 
 #define XCapL KKeyServer::modXLock()
 #define XNumL KKeyServer::modXNumLock()
 #define XScrL KKeyServer::modXScrollLock()
 void X11Window::establishCommandWindowGrab(uint8_t button)
 {
     // Unfortunately there are a lot of possible modifier combinations that we need to take into
     // account. We tackle that problem in a kind of smart way. First, we grab the button with all
     // possible modifiers, then we ungrab the ones that are relevant only to commandAllx().
 
     m_wrapper.grabButton(XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, XCB_MOD_MASK_ANY, button);
 
     uint16_t x11Modifier = x11CommandAllModifier();
 
     unsigned int mods[8] = {
         0, XCapL, XNumL, XNumL | XCapL,
         XScrL, XScrL | XCapL,
         XScrL | XNumL, XScrL | XNumL | XCapL};
     for (int i = 0; i < 8; ++i) {
         m_wrapper.ungrabButton(x11Modifier | mods[i], button);
     }
 }
 
 void X11Window::establishCommandAllGrab(uint8_t button)
 {
     uint16_t x11Modifier = x11CommandAllModifier();
 
     unsigned int mods[8] = {
         0, XCapL, XNumL, XNumL | XCapL,
         XScrL, XScrL | XCapL,
         XScrL | XNumL, XScrL | XNumL | XCapL};
     for (int i = 0; i < 8; ++i) {
         m_wrapper.grabButton(XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, x11Modifier | mods[i], button);
     }
 }
 #undef XCapL
 #undef XNumL
 #undef XScrL
 
 void X11Window::updateMouseGrab()
 {
     if (waylandServer()) {
         return;
     }
 
     xcb_ungrab_button(kwinApp()->x11Connection(), XCB_BUTTON_INDEX_ANY, m_wrapper, XCB_MOD_MASK_ANY);
 
 #if KWIN_BUILD_TABBOX
     if (workspace()->tabbox()->forcedGlobalMouseGrab()) { // see TabBox::establishTabBoxGrab()
         m_wrapper.grabButton(XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
         return;
     }
 #endif
 
     // When a passive grab is activated or deactivated, the X server will generate crossing
     // events as if the pointer were suddenly to warp from its current position to some position
     // in the grab window. Some /broken/ X11 clients do get confused by such EnterNotify and
     // LeaveNotify events so we release the passive grab for the active window.
     //
     // The passive grab below is established so the window can be raised or activated when it
     // is clicked.
     if ((options->focusPolicyIsReasonable() && !isActive()) || (options->isClickRaise() && !isMostRecentlyRaised())) {
         if (options->commandWindow1() != Options::MouseNothing) {
             establishCommandWindowGrab(XCB_BUTTON_INDEX_1);
         }
         if (options->commandWindow2() != Options::MouseNothing) {
             establishCommandWindowGrab(XCB_BUTTON_INDEX_2);
         }
         if (options->commandWindow3() != Options::MouseNothing) {
             establishCommandWindowGrab(XCB_BUTTON_INDEX_3);
         }
         if (options->commandWindowWheel() != Options::MouseNothing) {
             establishCommandWindowGrab(XCB_BUTTON_INDEX_4);
             establishCommandWindowGrab(XCB_BUTTON_INDEX_5);
         }
     }
 
     // We want to grab <command modifier> + buttons no matter what state the window is in. The
     // window will receive funky EnterNotify and LeaveNotify events, but there is nothing that
     // we can do about it, unfortunately.
 
     if (!workspace()->globalShortcutsDisabled()) {
         if (options->commandAll1() != Options::MouseNothing) {
             establishCommandAllGrab(XCB_BUTTON_INDEX_1);
         }
         if (options->commandAll2() != Options::MouseNothing) {
             establishCommandAllGrab(XCB_BUTTON_INDEX_2);
         }
         if (options->commandAll3() != Options::MouseNothing) {
             establishCommandAllGrab(XCB_BUTTON_INDEX_3);
         }
         if (options->commandAllWheel() != Options::MouseWheelNothing) {
             establishCommandAllGrab(XCB_BUTTON_INDEX_4);
             establishCommandAllGrab(XCB_BUTTON_INDEX_5);
         }
     }
 }
 
 static bool modKeyDown(int state)
 {
     const uint keyModX = (options->keyCmdAllModKey() == Qt::Key_Meta) ? KKeyServer::modXMeta() : KKeyServer::modXAlt();
     return keyModX && (state & KKeyServer::accelModMaskX()) == keyModX;
 }
 
 // return value matters only when filtering events before decoration gets them
 bool X11Window::buttonPressEvent(xcb_window_t w, int button, int state, int x, int y, int x_root, int y_root, xcb_timestamp_t time)
 {
     if (waylandServer()) {
         return true;
     }
     if (isInteractiveMoveResizePointerButtonDown()) {
         if (w == wrapperId()) {
             xcb_allow_events(kwinApp()->x11Connection(), XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME); // xTime());
         }
         return true;
     }
 
     if (w == wrapperId() || w == frameId() || w == inputId()) {
         // FRAME neco s tohohle by se melo zpracovat, nez to dostane dekorace
         updateUserTime(time);
         const bool bModKeyHeld = modKeyDown(state);
 
         if (isSplash()
             && button == XCB_BUTTON_INDEX_1 && !bModKeyHeld) {
             // hide splashwindow if the user clicks on it
             setHidden(true);
             if (w == wrapperId()) {
                 xcb_allow_events(kwinApp()->x11Connection(), XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME); // xTime());
             }
             return true;
         }
 
         Options::MouseCommand com = Options::MouseNothing;
         bool was_action = false;
         if (bModKeyHeld) {
             was_action = true;
             switch (button) {
             case XCB_BUTTON_INDEX_1:
                 com = options->commandAll1();
                 break;
             case XCB_BUTTON_INDEX_2:
                 com = options->commandAll2();
                 break;
             case XCB_BUTTON_INDEX_3:
                 com = options->commandAll3();
                 break;
             case XCB_BUTTON_INDEX_4:
             case XCB_BUTTON_INDEX_5:
                 com = options->operationWindowMouseWheel(button == XCB_BUTTON_INDEX_4 ? 120 : -120);
                 break;
             }
         } else {
             if (w == wrapperId()) {
                 if (button < 4) {
                     com = getMouseCommand(x11ToQtMouseButton(button), &was_action);
                 } else if (button < 6) {
                     com = getWheelCommand(Qt::Vertical, &was_action);
                 }
             }
         }
         if (was_action) {
             bool replay = performMouseCommand(com, QPoint(x_root, y_root));
 
             if (isSpecialWindow()) {
                 replay = true;
             }
 
             if (w == wrapperId()) { // these can come only from a grab
                 xcb_allow_events(kwinApp()->x11Connection(), replay ? XCB_ALLOW_REPLAY_POINTER : XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME); // xTime());
             }
             return true;
         }
     }
 
     if (w == wrapperId()) { // these can come only from a grab
         xcb_allow_events(kwinApp()->x11Connection(), XCB_ALLOW_REPLAY_POINTER, XCB_TIME_CURRENT_TIME); // xTime());
         return true;
     }
     if (w == inputId()) {
         x = x_root - frameGeometry().x();
         y = y_root - frameGeometry().y();
         // New API processes core events FIRST and only passes unused ones to the decoration
         QMouseEvent ev(QMouseEvent::MouseButtonPress,
                        QPoint(x, y),
                        QPoint(x_root, y_root),
                        x11ToQtMouseButton(button),
                        x11ToQtMouseButtons(state) | x11ToQtMouseButton(button),
                        Qt::KeyboardModifiers());
         return processDecorationButtonPress(&ev, true);
     }
     if (w == frameId() && isDecorated()) {
         if (button >= 4 && button <= 7) {
             const Qt::KeyboardModifiers modifiers = x11ToQtKeyboardModifiers(state);
             // Logic borrowed from qapplication_x11.cpp
             const int delta = 120 * ((button == 4 || button == 6) ? 1 : -1);
             const bool hor = (((button == 4 || button == 5) && (modifiers & Qt::AltModifier))
                               || (button == 6 || button == 7));
 
             const QPoint angle = hor ? QPoint(delta, 0) : QPoint(0, delta);
             QWheelEvent event(QPointF(x, y),
                               QPointF(x_root, y_root),
                               QPoint(),
                               angle,
                               x11ToQtMouseButtons(state),
                               modifiers,
                               Qt::NoScrollPhase,
                               false);
             event.setAccepted(false);
             QCoreApplication::sendEvent(decoration(), &event);
             if (!event.isAccepted() && !hor) {
                 if (titlebarPositionUnderMouse()) {
                     performMouseCommand(options->operationTitlebarMouseWheel(delta), QPoint(x_root, y_root));
                 }
             }
         } else {
             QMouseEvent event(QEvent::MouseButtonPress,
                               QPointF(x, y),
                               QPointF(x_root, y_root),
                               x11ToQtMouseButton(button),
                               x11ToQtMouseButtons(state) | x11ToQtMouseButton(button),
                               x11ToQtKeyboardModifiers(state));
             event.setTimestamp(time);
             event.setAccepted(false);
             QCoreApplication::sendEvent(decoration(), &event);
             if (!event.isAccepted()) {
                 processDecorationButtonPress(&event);
             }
         }
         return true;
     }
     return true;
 }
 
 // return value matters only when filtering events before decoration gets them
 bool X11Window::buttonReleaseEvent(xcb_window_t w, int button, int state, int x, int y, int x_root, int y_root)
 {
     if (waylandServer()) {
         return true;
     }
     if (w == frameId() && isDecorated()) {
         // wheel handled on buttonPress
         if (button < 4 || button > 7) {
             QMouseEvent event(QEvent::MouseButtonRelease,
                               QPointF(x, y),
                               QPointF(x_root, y_root),
                               x11ToQtMouseButton(button),
                               x11ToQtMouseButtons(state) & ~x11ToQtMouseButton(button),
                               x11ToQtKeyboardModifiers(state));
             event.setAccepted(false);
             QCoreApplication::sendEvent(decoration(), &event);
             if (event.isAccepted() || !titlebarPositionUnderMouse()) {
                 invalidateDecorationDoubleClickTimer(); // click was for the deco and shall not init a doubleclick
             }
         }
     }
     if (w == wrapperId()) {
         xcb_allow_events(kwinApp()->x11Connection(), XCB_ALLOW_SYNC_POINTER, XCB_TIME_CURRENT_TIME); // xTime());
         return true;
     }
     if (w != frameId() && w != inputId() && w != moveResizeGrabWindow()) {
         return true;
     }
     if (w == frameId() && workspace()->userActionsMenu() && workspace()->userActionsMenu()->isShown()) {
         workspace()->userActionsMenu()->grabInput();
     }
     x = this->x(); // translate from grab window to local coords
     y = this->y();
 
     // Check whether other buttons are still left pressed
     int buttonMask = XCB_BUTTON_MASK_1 | XCB_BUTTON_MASK_2 | XCB_BUTTON_MASK_3;
     if (button == XCB_BUTTON_INDEX_1) {
         buttonMask &= ~XCB_BUTTON_MASK_1;
     } else if (button == XCB_BUTTON_INDEX_2) {
         buttonMask &= ~XCB_BUTTON_MASK_2;
     } else if (button == XCB_BUTTON_INDEX_3) {
         buttonMask &= ~XCB_BUTTON_MASK_3;
     }
 
     if ((state & buttonMask) == 0) {
         endInteractiveMoveResize();
     }
     return true;
 }
 
 // return value matters only when filtering events before decoration gets them
 bool X11Window::motionNotifyEvent(xcb_window_t w, int state, int x, int y, int x_root, int y_root)
 {
     if (waylandServer()) {
         return true;
     }
     if (w == frameId() && isDecorated() && !isMinimized()) {
         // TODO Mouse move event dependent on state
         QHoverEvent event(QEvent::HoverMove, QPointF(x, y), QPointF(x, y));
         QCoreApplication::instance()->sendEvent(decoration(), &event);
     }
     if (w != frameId() && w != inputId() && w != moveResizeGrabWindow()) {
         return true; // care only about the whole frame
     }
     if (!isInteractiveMoveResizePointerButtonDown()) {
         if (w == inputId()) {
             int x = x_root - frameGeometry().x(); // + padding_left;
             int y = y_root - frameGeometry().y(); // + padding_top;
 
             if (isDecorated()) {
                 QHoverEvent event(QEvent::HoverMove, QPointF(x, y), QPointF(x, y));
                 QCoreApplication::instance()->sendEvent(decoration(), &event);
             }
         }
         Gravity newGravity = modKeyDown(state) ? Gravity::None : mouseGravity();
         if (newGravity != interactiveMoveResizeGravity()) {
             setInteractiveMoveResizeGravity(newGravity);
             updateCursor();
         }
         return false;
     }
     if (w == moveResizeGrabWindow()) {
         x = this->x(); // translate from grab window to local coords
         y = this->y();
     }
 
     handleInteractiveMoveResize(QPoint(x, y), QPoint(x_root, y_root));
     if (isInteractiveMove()) {
         workspace()->screenEdges()->check(QPoint(x_root, y_root), QDateTime::fromMSecsSinceEpoch(xTime(), Qt::UTC));
     }
 
     return true;
 }
 
 void X11Window::focusInEvent(xcb_focus_in_event_t *e)
 {
     if (e->event != window()) {
         return; // only window gets focus
     }
     if (e->mode == XCB_NOTIFY_MODE_UNGRAB) {
         return; // we don't care
     }
     if (e->detail == XCB_NOTIFY_DETAIL_POINTER) {
         return; // we don't care
     }
     if (isShade() || !isShown() || !isOnCurrentDesktop()) { // we unmapped it, but it got focus meanwhile ->
         return; // activateNextWindow() already transferred focus elsewhere
     }
     workspace()->forEachClient([](X11Window *window) {
         window->cancelFocusOutTimer();
     });
     // check if this window is in should_get_focus list or if activation is allowed
     bool activate = allowWindowActivation(-1U, true);
     workspace()->gotFocusIn(this); // remove from should_get_focus list
     if (activate) {
         setActive(true);
     } else {
         if (workspace()->restoreFocus()) {
             demandAttention();
         } else {
             qCWarning(KWIN_CORE, "Failed to restore focus. Activating 0x%x", window());
             setActive(true);
         }
     }
 }
 
 void X11Window::focusOutEvent(xcb_focus_out_event_t *e)
 {
     if (e->event != window()) {
         return; // only window gets focus
     }
     if (e->mode == XCB_NOTIFY_MODE_GRAB) {
         return; // we don't care
     }
     if (isShade()) {
         return; // here neither
     }
     if (e->detail != XCB_NOTIFY_DETAIL_NONLINEAR
         && e->detail != XCB_NOTIFY_DETAIL_NONLINEAR_VIRTUAL) {
         // SELI check all this
         return; // hack for motif apps like netscape
     }
     if (QApplication::activePopupWidget()) {
         return;
     }
 
     // When a window loses focus, FocusOut events are usually immediatelly
     // followed by FocusIn events for another window that gains the focus
     // (unless the focus goes to another screen, or to the nofocus widget).
     // Without this check, the former focused window would have to be
     // deactivated, and after that, the new one would be activated, with
     // a short time when there would be no active window. This can cause
     // flicker sometimes, e.g. when a fullscreen is shown, and focus is transferred
     // from it to its transient, the fullscreen would be kept in the Active layer
     // at the beginning and at the end, but not in the middle, when the active
     // window would be temporarily none (see X11Window::belongToLayer() ).
     // Therefore the setActive(false) call is moved to the end of the current
     // event queue. If there is a matching FocusIn event in the current queue
     // this will be processed before the setActive(false) call and the activation
     // of the window which gained FocusIn will automatically deactivate the
     // previously active window.
     if (!m_focusOutTimer) {
         m_focusOutTimer = new QTimer(this);
         m_focusOutTimer->setSingleShot(true);
         m_focusOutTimer->setInterval(0);
         connect(m_focusOutTimer, &QTimer::timeout, this, [this]() {
             setActive(false);
         });
     }
     m_focusOutTimer->start();
 }
 
 // performs _NET_WM_MOVERESIZE
 void X11Window::NETMoveResize(qreal x_root, qreal y_root, NET::Direction direction)
 {
     if (direction == NET::Move) {
         // move cursor to the provided position to prevent the window jumping there on first movement
         // the expectation is that the cursor is already at the provided position,
         // thus it's more a safety measurement
         Cursors::self()->mouse()->setPos(QPointF(x_root, y_root));
         performMouseCommand(Options::MouseMove, QPointF(x_root, y_root));
     } else if (isInteractiveMoveResize() && direction == NET::MoveResizeCancel) {
         finishInteractiveMoveResize(true);
         setInteractiveMoveResizePointerButtonDown(false);
         updateCursor();
     } else if (direction >= NET::TopLeft && direction <= NET::Left) {
         static const Gravity convert[] = {
             Gravity::TopLeft,
             Gravity::Top,
             Gravity::TopRight,
             Gravity::Right,
             Gravity::BottomRight,
             Gravity::Bottom,
             Gravity::BottomLeft,
             Gravity::Left};
         if (!isResizable() || isShade()) {
             return;
         }
         if (isInteractiveMoveResize()) {
             finishInteractiveMoveResize(false);
         }
         setInteractiveMoveResizePointerButtonDown(true);
         setInteractiveMoveOffset(QPointF(x_root - x(), y_root - y())); // map from global
         setInvertedInteractiveMoveOffset(rect().bottomRight() - interactiveMoveOffset());
         setUnrestrictedInteractiveMoveResize(false);
         setInteractiveMoveResizeGravity(convert[direction]);
         if (!startInteractiveMoveResize()) {
             setInteractiveMoveResizePointerButtonDown(false);
         }
         updateCursor();
     } else if (direction == NET::KeyboardMove) {
         // ignore mouse coordinates given in the message, mouse position is used by the moving algorithm
         Cursors::self()->mouse()->setPos(frameGeometry().center());
         performMouseCommand(Options::MouseUnrestrictedMove, frameGeometry().center());
     } else if (direction == NET::KeyboardSize) {
         // ignore mouse coordinates given in the message, mouse position is used by the resizing algorithm
         Cursors::self()->mouse()->setPos(frameGeometry().bottomRight());
         performMouseCommand(Options::MouseUnrestrictedResize, frameGeometry().bottomRight());
     }
 }
 
 void X11Window::keyPressEvent(uint key_code, xcb_timestamp_t time)
 {
     updateUserTime(time);
     Window::keyPressEvent(key_code);
 }
 
 } // namespace