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kwin/src/events.cpp
Ahmad Samir 9f41691684 fix clazy warning: Pass a context object as 3rd connect parameter 
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2021-08-23 23:02:46 +00:00

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/*
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 "x11client.h"
#include "cursor.h"
#include "focuschain.h"
#include "netinfo.h"
#include "workspace.h"
#include "atoms.h"
#ifdef KWIN_BUILD_TABBOX
#include "tabbox.h"
#endif
#include "group.h"
#include "rules.h"
#include "unmanaged.h"
#include "useractions.h"
#include "effects.h"
#include "screens.h"
#include "xcbutils.h"
#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>
#ifdef XCB_ICCCM_FOUND
#include <xcb/xcb_icccm.h>
#endif
#include "composite.h"
#include "x11eventfilter.h"
#include "wayland_server.h"
#include <KWaylandServer/surface_interface.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;
if (effects && static_cast< EffectsHandlerImpl* >(effects)->hasKeyboardGrab()
&& (eventType == XCB_KEY_PRESS || eventType == XCB_KEY_RELEASE))
return false; // let Qt process it, it'll be intercepted again in eventFilter()
// events that should be handled before Clients can get them
switch (eventType) {
case XCB_CONFIGURE_NOTIFY:
if (reinterpret_cast<xcb_configure_notify_event_t*>(e)->event == rootWindow())
markXStackingOrderAsDirty();
break;
};
const xcb_window_t eventWindow = findEventWindow(e);
if (eventWindow != XCB_WINDOW_NONE) {
if (X11Client *c = findClient(Predicate::WindowMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (X11Client *c = findClient(Predicate::WrapperIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (X11Client *c = findClient(Predicate::FrameIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (X11Client *c = findClient(Predicate::InputIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (Unmanaged* c = findUnmanaged(eventWindow)) {
if (c->windowEvent(e))
return true;
}
}
switch (eventType) {
case XCB_CREATE_NOTIFY: {
const auto *event = reinterpret_cast<xcb_create_notify_event_t*>(e);
if (event->parent == rootWindow() &&
!QWidget::find(event->window) &&
!event->override_redirect) {
// see comments for allowClientActivation()
updateXTime();
const xcb_timestamp_t t = xTime();
xcb_change_property(connection(), 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: {
updateXTime();
const auto *event = reinterpret_cast<xcb_map_request_event_t*>(e);
if (X11Client *c = findClient(Predicate::WindowMatch, event->window)) {
// e->xmaprequest.window is different from e->xany.window
// TODO this shouldn't be necessary now
c->windowEvent(e);
FocusChain::self()->update(c, 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 X11Client::mapRequestEvent() actually requires that
// this code doesn't check the parent to be root.
if (!createClient(event->window, false)) {
xcb_map_window(connection(), event->window);
const uint32_t values[] = { XCB_STACK_MODE_ABOVE };
xcb_configure_window(connection(), 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) {
Unmanaged* c = findUnmanaged(event->window);
if (c == nullptr)
c = createUnmanaged(event->window);
if (c) {
// 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 (c->hasScheduledRelease()) {
c->release();
c = createUnmanaged(event->window);
}
if (c)
return c->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 == rootWindow()) {
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(connection(), event->window, value_mask, values);
return true;
}
break;
}
case XCB_FOCUS_IN: {
const auto *event = reinterpret_cast<xcb_focus_in_event_t*>(e);
if (event->event == rootWindow()
&& (event->detail == XCB_NOTIFY_DETAIL_NONE || event->detail == XCB_NOTIFY_DETAIL_POINTER_ROOT || event->detail == XCB_NOTIFY_DETAIL_INFERIOR)) {
Xcb::CurrentInput currentInput;
updateXTime(); // focusToNull() uses xTime(), which is old now (FocusIn has no timestamp)
// it seems we can "loose" focus reversions when the closing client hold a grab
// => catch the typical pattern (though we don't want the focus on the root anyway) #348935
const bool lostFocusPointerToRoot = currentInput->focus == rootWindow() && 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" ;
AbstractClient *c = mostRecentlyActivatedClient();
if (c != nullptr)
requestFocus(c, true);
else if (activateNextClient(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;
}
// Used only to filter events that need to be processed by Qt first
// (e.g. keyboard input to be composed), otherwise events are
// handle by the XEvent filter above
bool Workspace::workspaceEvent(QEvent* e)
{
if ((e->type() == QEvent::KeyPress || e->type() == QEvent::KeyRelease || e->type() == QEvent::ShortcutOverride)
&& effects && static_cast< EffectsHandlerImpl* >(effects)->hasKeyboardGrab()) {
static_cast< EffectsHandlerImpl* >(effects)->grabbedKeyboardEvent(static_cast< QKeyEvent* >(e));
return true;
}
return false;
}
// ****************************************
// Client
// ****************************************
/**
* General handler for XEvents concerning the client window
*/
bool X11Client::windowEvent(xcb_generic_event_t *e)
{
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(connection(), frameId(), rootWindow(), 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(QByteArray(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);
motionNotifyEvent(event->event, event->state,
event->event_x, event->event_y, event->root_x, event->root_y);
workspace()->updateFocusMousePosition(QPoint(event->root_x, event->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).
motionNotifyEvent(event->event, event->state,
event->event_x, event->event_y, event->root_x, event->root_y);
workspace()->updateFocusMousePosition(QPoint(event->root_x, event->root_y));
break;
}
case XCB_LEAVE_NOTIFY: {
auto *event = reinterpret_cast<xcb_leave_notify_event_t*>(e);
motionNotifyEvent(event->event, event->state,
event->event_x, event->event_y, event->root_x, event->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(window()); // 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 X11Client::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())
unminimize();
if (isShade())
setShade(ShadeNone);
if (!isOnCurrentDesktop()) {
if (workspace()->allowClientActivation(this))
workspace()->activateClient(this);
else
demandAttention();
}
return true;
}
/**
* Handles unmap notify events of the client window
*/
void X11Client::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 == rootWindow() && (e->response_type & 0x80))
ignore = false; // XWithdrawWindow()
if (ignore)
return;
}
// check whether this is result of an XReparentWindow - client then won't be parented by wrapper
// in this case do not release the client (causes reparent to root, removal from saveSet and what not)
// but just destroy the client
Xcb::Tree tree(m_client);
xcb_window_t daddy = tree.parent();
if (daddy == m_wrapper) {
releaseWindow(); // unmapped from a regular client state
} else {
destroyClient(); // the client was moved to some other parent
}
}
void X11Client::destroyNotifyEvent(xcb_destroy_notify_event_t *e)
{
if (e->window != window())
return;
destroyClient();
}
/**
* Handles client messages for the client window
*/
void X11Client::clientMessageEvent(xcb_client_message_event_t *e)
{
Toplevel::clientMessageEvent(e);
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)
minimize();
return;
}
}
/**
* Handles configure requests of the client window
*/
void X11Client::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, e->x, e->y, e->width, 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 client 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 X11Client::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 X11Client::propertyNotifyEvent(xcb_property_notify_event_t *e)
{
Toplevel::propertyNotifyEvent(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_first_in_window_list)
updateFirstInTabBox();
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();
break;
}
}
void X11Client::enterNotifyEvent(xcb_enter_notify_event_t *e)
{
if (waylandServer()) {
return;
}
if (e->event != frameId())
return; // care only about entering the whole frame
#define MOUSE_DRIVEN_FOCUS (!options->focusPolicyIsReasonable() || \
(options->focusPolicy() == Options::FocusFollowsMouse && options->isNextFocusPrefersMouse()))
if (e->mode == XCB_NOTIFY_MODE_NORMAL || (e->mode == XCB_NOTIFY_MODE_UNGRAB && MOUSE_DRIVEN_FOCUS)) {
#undef MOUSE_DRIVEN_FOCUS
enterEvent(QPoint(e->root_x, e->root_y));
return;
}
}
void X11Client::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()) {
setInteractiveMoveResizePointerMode(PositionCenter);
updateCursor();
}
bool lostMouse = !rect().contains(QPoint(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 client, 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) {
leaveEvent();
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 X11Client::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 X11Client::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 X11Client::updateMouseGrab()
{
if (waylandServer()) {
return;
}
xcb_ungrab_button(connection(), XCB_BUTTON_INDEX_ANY, m_wrapper, XCB_MOD_MASK_ANY);
if (TabBox::TabBox::self()->forcedGlobalMouseGrab()) { // see TabBox::establishTabBoxGrab()
m_wrapper.grabButton(XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
return;
}
// 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
// client 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 X11Client::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(connection(), 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
hideClient(true);
if (w == wrapperId())
xcb_allow_events(connection(), 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(connection(), 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(connection(), 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), 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,
delta,
hor ? Qt::Horizontal : Qt::Vertical,
x11ToQtMouseButtons(state),
modifiers);
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), x11ToQtKeyboardModifiers(state));
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 X11Client::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(connection(), 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()) {
const_cast<UserActionsMenu*>(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 X11Client::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);
}
}
Position newmode = modKeyDown(state) ? PositionCenter : mousePosition();
if (newmode != interactiveMoveResizePointerMode()) {
setInteractiveMoveResizePointerMode(newmode);
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));
return true;
}
void X11Client::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 (!isShown(false) || !isOnCurrentDesktop()) // we unmapped it, but it got focus meanwhile ->
return; // activateNextClient() already transferred focus elsewhere
workspace()->forEachClient([](X11Client *client) {
client->cancelFocusOutTimer();
});
// check if this client is in should_get_focus list or if activation is allowed
bool activate = workspace()->allowClientActivation(this, -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 X11Client::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 client loses focus, FocusOut events are usually immediatelly
// followed by FocusIn events for another client that gains the focus
// (unless the focus goes to another screen, or to the nofocus widget).
// Without this check, the former focused client would have to be
// deactivated, and after that, the new one would be activated, with
// a short time when there would be no active client. 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
// client would be temporarily none (see X11Client::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 Client which gained FocusIn will automatically deactivate the
// previously active client.
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 X11Client::NETMoveResize(int x_root, int 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(QPoint(x_root, y_root));
performMouseCommand(Options::MouseMove, QPoint(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 Position convert[] = {
PositionTopLeft,
PositionTop,
PositionTopRight,
PositionRight,
PositionBottomRight,
PositionBottom,
PositionBottomLeft,
PositionLeft
};
if (!isResizable() || isShade())
return;
if (isInteractiveMoveResize())
finishInteractiveMoveResize(false);
setInteractiveMoveResizePointerButtonDown(true);
setInteractiveMoveOffset(QPoint(x_root - x(), y_root - y())); // map from global
setInvertedInteractiveMoveOffset(rect().bottomRight() - interactiveMoveOffset());
setUnrestrictedInteractiveMoveResize(false);
setInteractiveMoveResizePointerMode(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 X11Client::keyPressEvent(uint key_code, xcb_timestamp_t time)
{
updateUserTime(time);
AbstractClient::keyPressEvent(key_code);
}
// ****************************************
// Unmanaged
// ****************************************
bool Unmanaged::windowEvent(xcb_generic_event_t *e)
{
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:
release(ReleaseReason::Destroyed);
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.
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_scheduledRelease = true;
QTimer::singleShot(1, this, [this]() { release(); });
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(window());
addRepaintFull();
addWorkspaceRepaint(frameGeometry()); // in case shape change removes part of this window
Q_EMIT geometryShapeChanged(this, frameGeometry());
}
if (eventType == Xcb::Extensions::self()->damageNotifyEvent())
damageNotifyEvent();
break;
}
}
return false; // don't eat events, even our own unmanaged widgets are tracked
}
void Unmanaged::configureNotifyEvent(xcb_configure_notify_event_t *e)
{
if (effects)
static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowStacking(); // keep them on top
QRect newgeom(e->x, e->y, e->width, e->height);
if (newgeom != m_frameGeometry) {
QRect old = m_frameGeometry;
m_clientGeometry = newgeom;
m_frameGeometry = newgeom;
m_bufferGeometry = newgeom;
Q_EMIT bufferGeometryChanged(this, old);
Q_EMIT clientGeometryChanged(this, old);
Q_EMIT frameGeometryChanged(this, old);
Q_EMIT geometryShapeChanged(this, old);
}
}
// ****************************************
// Toplevel
// ****************************************
void Toplevel::propertyNotifyEvent(xcb_property_notify_event_t *e)
{
if (e->window != window())
return; // ignore frame/wrapper
switch(e->atom) {
default:
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 Toplevel::clientMessageEvent(xcb_client_message_event_t *e)
{
if (e->type == atoms->wl_surface_id) {
m_surfaceId = e->data.data32[0];
if (auto w = waylandServer()) {
if (auto s = KWaylandServer::SurfaceInterface::get(m_surfaceId, w->xWaylandConnection())) {
setSurface(s);
}
}
Q_EMIT surfaceIdChanged(m_surfaceId);
}
}
} // namespace
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