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events.cpp
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events.cpp
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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
/*
This file contains things relevant to handling incoming events.
*/
#include "client.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 "overlaywindow.h"
#include "rules.h"
#include "unmanaged.h"
#include "useractions.h"
#include "effects.h"
#include "screenedge.h"
#include "screens.h"
#include "xcbutils.h"
#include <KDecoration2/Decoration>
#include <QApplication>
#include <QDebug>
#include <QHoverEvent>
#include <QKeyEvent>
#include <QMouseEvent>
#include <QStyleHints>
#include <QWhatsThis>
#include <QWheelEvent>
#include <kkeyserver.h>
#include <xcb/sync.h>
#ifdef XCB_ICCCM_FOUND
#include <xcb/xcb_icccm.h>
#endif
#include "composite.h"
#include "killwindow.h"
#include "x11eventfilter.h"
#include "wayland_server.h"
#include <KWayland/Server/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
{
extern int currentRefreshRate();
// ****************************************
// 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;
}
}
QVector<QByteArray> s_xcbEerrors({
QByteArrayLiteral("Success"),
QByteArrayLiteral("BadRequest"),
QByteArrayLiteral("BadValue"),
QByteArrayLiteral("BadWindow"),
QByteArrayLiteral("BadPixmap"),
QByteArrayLiteral("BadAtom"),
QByteArrayLiteral("BadCursor"),
QByteArrayLiteral("BadFont"),
QByteArrayLiteral("BadMatch"),
QByteArrayLiteral("BadDrawable"),
QByteArrayLiteral("BadAccess"),
QByteArrayLiteral("BadAlloc"),
QByteArrayLiteral("BadColor"),
QByteArrayLiteral("BadGC"),
QByteArrayLiteral("BadIDChoice"),
QByteArrayLiteral("BadName"),
QByteArrayLiteral("BadLength"),
QByteArrayLiteral("BadImplementation"),
QByteArrayLiteral("Unknown")});
void Workspace::registerEventFilter(X11EventFilter *filter)
{
if (filter->eventType() == XCB_GE_GENERIC)
m_genericEventFilters.append(filter);
else
m_eventFilters.append(filter);
}
void Workspace::unregisterEventFilter(X11EventFilter *filter)
{
if (filter->eventType() == XCB_GE_GENERIC)
m_genericEventFilters.removeOne(filter);
else
m_eventFilters.removeOne(filter);
}
/*!
Handles workspace specific XCB event
*/
bool Workspace::workspaceEvent(xcb_generic_event_t *e)
{
const uint8_t eventType = e->response_type & ~0x80;
if (!eventType) {
// let's check whether it's an error from one of the extensions KWin uses
xcb_generic_error_t *error = reinterpret_cast<xcb_generic_error_t*>(e);
const QVector<Xcb::ExtensionData> extensions = Xcb::Extensions::self()->extensions();
for (const auto &extension : extensions) {
if (error->major_code == extension.majorOpcode) {
QByteArray errorName;
if (error->error_code < s_xcbEerrors.size()) {
errorName = s_xcbEerrors.at(error->error_code);
} else if (error->error_code >= extension.errorBase) {
const int index = error->error_code - extension.errorBase;
if (index >= 0 && index < extension.errorCodes.size()) {
errorName = extension.errorCodes.at(index);
}
}
if (errorName.isEmpty()) {
errorName = QByteArrayLiteral("Unknown");
}
qCWarning(KWIN_CORE, "XCB error: %d (%s), sequence: %d, resource id: %d, major code: %d (%s), minor code: %d (%s)",
int(error->error_code), errorName.constData(),
int(error->sequence), int(error->resource_id),
int(error->major_code), extension.name.constData(),
int(error->minor_code),
extension.opCodes.size() > error->minor_code ? extension.opCodes.at(error->minor_code).constData() : "Unknown");
return true;
}
}
return false;
}
if (eventType == XCB_GE_GENERIC) {
xcb_ge_generic_event_t *ge = reinterpret_cast<xcb_ge_generic_event_t *>(e);
foreach (X11EventFilter *filter, m_genericEventFilters) {
if (filter->extension() == ge->extension && filter->genericEventType() == ge->event_type && filter->event(e)) {
return true;
}
}
} else {
foreach (X11EventFilter *filter, m_eventFilters) {
if (filter->eventType() == eventType && filter->event(e)) {
return true;
}
}
}
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()
if (!m_windowKiller.isNull() && m_windowKiller->isActive() && m_windowKiller->isResponsibleForEvent(eventType)) {
m_windowKiller->processEvent(e);
// filter out the event
return true;
}
if (eventType == XCB_PROPERTY_NOTIFY || eventType == XCB_CLIENT_MESSAGE) {
NET::Properties dirtyProtocols;
NET::Properties2 dirtyProtocols2;
rootInfo()->event(e, &dirtyProtocols, &dirtyProtocols2);
if (dirtyProtocols & NET::DesktopNames)
VirtualDesktopManager::self()->save();
if (dirtyProtocols2 & NET::WM2DesktopLayout)
VirtualDesktopManager::self()->updateLayout();
}
// events that should be handled before Clients can get them
switch (eventType) {
case XCB_BUTTON_PRESS:
case XCB_BUTTON_RELEASE: {
was_user_interaction = true;
auto *mouseEvent = reinterpret_cast<xcb_button_press_event_t*>(e);
#ifdef KWIN_BUILD_TABBOX
if (TabBox::TabBox::self()->isGrabbed()) {
return TabBox::TabBox::self()->handleMouseEvent(mouseEvent);
}
#endif
if (effects && static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowEvent(mouseEvent)) {
return true;
}
break;
}
case XCB_MOTION_NOTIFY: {
auto *mouseEvent = reinterpret_cast<xcb_motion_notify_event_t*>(e);
const QPoint rootPos(mouseEvent->root_x, mouseEvent->root_y);
#ifdef KWIN_BUILD_TABBOX
if (TabBox::TabBox::self()->isGrabbed()) {
ScreenEdges::self()->check(rootPos, QDateTime::fromMSecsSinceEpoch(xTime()), true);
return TabBox::TabBox::self()->handleMouseEvent(mouseEvent);
}
#endif
if (effects && static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowEvent(mouseEvent)) {
return true;
}
if (QWidget::mouseGrabber()) {
ScreenEdges::self()->check(rootPos, QDateTime::fromMSecsSinceEpoch(xTime()), true);
} else {
ScreenEdges::self()->check(rootPos, QDateTime::fromMSecsSinceEpoch(mouseEvent->time));
}
break;
}
case XCB_KEY_PRESS: {
was_user_interaction = true;
int keyQt;
xcb_key_press_event_t *event = reinterpret_cast<xcb_key_press_event_t*>(e);
KKeyServer::xcbKeyPressEventToQt(event, &keyQt);
// qDebug() << "Workspace::keyPress( " << keyQt << " )";
if (Client *c = dynamic_cast<Client*>(movingClient)) {
c->keyPressEvent(keyQt, event->time);
return true;
}
#ifdef KWIN_BUILD_TABBOX
if (TabBox::TabBox::self()->isGrabbed()) {
TabBox::TabBox::self()->keyPress(keyQt);
return true;
}
#endif
break;
}
case XCB_KEY_RELEASE:
was_user_interaction = true;
#ifdef KWIN_BUILD_TABBOX
if (TabBox::TabBox::self()->isGrabbed()) {
TabBox::TabBox::self()->keyRelease(reinterpret_cast<xcb_key_release_event_t*>(e));
return true;
}
#endif
break;
case XCB_CONFIGURE_NOTIFY:
if (reinterpret_cast<xcb_configure_notify_event_t*>(e)->event == rootWindow())
x_stacking_dirty = true;
break;
};
const xcb_window_t eventWindow = findEventWindow(e);
if (eventWindow != XCB_WINDOW_NONE) {
if (Client* c = findClient(Predicate::WindowMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (Client* c = findClient(Predicate::WrapperIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (Client* c = findClient(Predicate::FrameIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (Client *c = findClient(Predicate::InputIdMatch, eventWindow)) {
if (c->windowEvent(e))
return true;
} else if (Unmanaged* c = findUnmanaged(eventWindow)) {
if (c->windowEvent(e))
return true;
} else {
// We want to pass root window property events to effects
if (eventType == XCB_PROPERTY_NOTIFY) {
auto *event = reinterpret_cast<xcb_property_notify_event_t*>(e);
if (event->window == rootWindow()) {
emit propertyNotify(event->atom);
}
}
}
}
if (Client *c = dynamic_cast<Client*>(movingClient)) {
if (eventType == XCB_BUTTON_PRESS || eventType == XCB_BUTTON_RELEASE || eventType == XCB_MOTION_NOTIFY) {
if (c->moveResizeGrabWindow() == reinterpret_cast<xcb_button_press_event_t*>(e)->event && 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_DESTROY_NOTIFY: {
return false;
}
case XCB_MAP_REQUEST: {
updateXTime();
const auto *event = reinterpret_cast<xcb_map_request_event_t*>(e);
if (Client* 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 Client::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 == NULL)
c = createUnmanaged(event->window);
if (c)
return c->windowEvent(e);
}
return (event->event != event->window); // hide wm typical event from Qt
}
case XCB_ENTER_NOTIFY: {
if (QWhatsThis::inWhatsThisMode()) {
QWidget* w = QWidget::find(reinterpret_cast<xcb_enter_notify_event_t*>(e)->event);
if (w)
QWhatsThis::leaveWhatsThisMode();
}
if (ScreenEdges::self()->isEntered(reinterpret_cast<xcb_enter_notify_event_t*>(e)))
return true;
break;
}
case XCB_LEAVE_NOTIFY: {
if (!QWhatsThis::inWhatsThisMode())
break;
// TODO is this cliente ever found, given that client events are searched above?
const auto *event = reinterpret_cast<xcb_leave_notify_event_t*>(e);
Client* c = findClient(Predicate::FrameIdMatch, event->event);
if (c && event->detail != XCB_NOTIFY_DETAIL_INFERIOR)
QWhatsThis::leaveWhatsThisMode();
break;
}
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 != NULL)
requestFocus(c, true);
else if (activateNextClient(NULL))
; // 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
case XCB_CLIENT_MESSAGE:
if (ScreenEdges::self()->isEntered(reinterpret_cast<xcb_client_message_event_t*>(e)))
return true;
break;
case XCB_EXPOSE: {
const auto *event = reinterpret_cast<xcb_expose_event_t*>(e);
if (compositing()
&& (event->window == rootWindow() // root window needs repainting
|| (m_compositor->overlayWindow() != XCB_WINDOW_NONE && event->window == m_compositor->overlayWindow()))) { // overlay needs repainting
m_compositor->addRepaint(event->x, event->y, event->width, event->height);
}
break;
}
case XCB_VISIBILITY_NOTIFY: {
const auto *event = reinterpret_cast<xcb_visibility_notify_event_t*>(e);
if (compositing() && m_compositor->overlayWindow() != XCB_WINDOW_NONE && event->window == m_compositor->overlayWindow()) {
bool was_visible = m_compositor->isOverlayWindowVisible();
m_compositor->setOverlayWindowVisibility((event->state != XCB_VISIBILITY_FULLY_OBSCURED));
if (!was_visible && m_compositor->isOverlayWindowVisible()) {
// hack for #154825
m_compositor->addRepaintFull();
QTimer::singleShot(2000, m_compositor, SLOT(addRepaintFull()));
}
m_compositor->scheduleRepaint();
}
break;
}
default:
if (eventType == Xcb::Extensions::self()->randrNotifyEvent() && Xcb::Extensions::self()->isRandrAvailable()) {
auto *event = reinterpret_cast<xcb_randr_screen_change_notify_event_t*>(e);
xcb_screen_t *screen = defaultScreen();
if (event->rotation & (XCB_RANDR_ROTATION_ROTATE_90 | XCB_RANDR_ROTATION_ROTATE_270)) {
screen->width_in_pixels = event->height;
screen->height_in_pixels = event->width;
screen->width_in_millimeters = event->mheight;
screen->height_in_millimeters = event->mwidth;
} else {
screen->width_in_pixels = event->width;
screen->height_in_pixels = event->height;
screen->width_in_millimeters = event->mwidth;
screen->height_in_millimeters = event->mheight;
}
if (compositing()) {
// desktopResized() should take care of when the size or
// shape of the desktop has changed, but we also want to
// catch refresh rate changes
if (m_compositor->xrrRefreshRate() != currentRefreshRate())
m_compositor->setCompositeResetTimer(0);
}
} else if (eventType == Xcb::Extensions::self()->syncAlarmNotifyEvent() && Xcb::Extensions::self()->isSyncAvailable()) {
for (Client *c : clients)
c->syncEvent(reinterpret_cast< xcb_sync_alarm_notify_event_t* >(e));
for (Client *c : desktops)
c->syncEvent(reinterpret_cast< xcb_sync_alarm_notify_event_t* >(e));
} else if (eventType == Xcb::Extensions::self()->fixesCursorNotifyEvent() && Xcb::Extensions::self()->isFixesAvailable()) {
Cursor::self()->notifyCursorChanged(reinterpret_cast<xcb_xfixes_cursor_notify_event_t*>(e)->cursor_serial);
}
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 Client::windowEvent(xcb_generic_event_t *e)
{
if (findEventWindow(e) == window()) { // avoid doing stuff on frame or wrapper
NET::Properties dirtyProperties;
NET::Properties2 dirtyProperties2;
double old_opacity = opacity();
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 (compositing()) {
addRepaintFull();
emit opacityChanged(this, old_opacity);
} else {
// forward to the frame if there's possibly another compositing manager running
NETWinInfo i(connection(), frameId(), rootWindow(), 0, 0);
i.setOpacity(info->opacity());
}
}
if (dirtyProperties2 & NET::WM2FrameOverlap) {
// ### Inform the decoration
}
if (dirtyProperties2.testFlag(NET::WM2WindowRole)) {
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();
}
}
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);
workspace()->setWasUserInteraction();
break;
case XCB_BUTTON_PRESS: {
const auto *event = reinterpret_cast<xcb_button_press_event_t*>(e);
updateUserTime(event->time);
workspace()->setWasUserInteraction();
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 Client::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 Client::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 Client::destroyNotifyEvent(xcb_destroy_notify_event_t *e)
{
if (e->window != window())
return;
destroyClient();
}
/*!
Handles client messages for the client window
*/
void Client::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 Client::configureRequestEvent(xcb_configure_request_event_t *e)
{
if (e->window != window())
return; // ignore frame/wrapper
if (isResize() || isMove())
return; // we have better things to do right now
if (fullscreen_mode == 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 Client::setGeometry()/plainResize()/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 Client::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->gtk_frame_extents)
detectGtkFrameExtents();
break;
}
}
void Client::enterNotifyEvent(xcb_enter_notify_event_t *e)
{
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)) {
if (options->isShadeHover()) {
cancelShadeHoverTimer();
if (isShade()) {
shadeHoverTimer = new QTimer(this);
connect(shadeHoverTimer, SIGNAL(timeout()), this, SLOT(shadeHover()));
shadeHoverTimer->setSingleShot(true);
shadeHoverTimer->start(options->shadeHoverInterval());
}
}
#undef MOUSE_DRIVEN_FOCUS
enterEvent(QPoint(e->root_x, e->root_y));
return;
}
}
void Client::leaveNotifyEvent(xcb_leave_notify_event_t *e)
{
if (e->event != frameId())
return; // care only about leaving the whole frame
if (e->mode == XCB_NOTIFY_MODE_NORMAL) {
if (!isMoveResizePointerButtonDown()) {
setMoveResizePointerMode(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();
cancelShadeHoverTimer();
if (shade_mode == ShadeHover && !isMoveResize() && !isMoveResizePointerButtonDown()) {
shadeHoverTimer = new QTimer(this);
connect(shadeHoverTimer, SIGNAL(timeout()), this, SLOT(shadeUnhover()));
shadeHoverTimer->setSingleShot(true);
shadeHoverTimer->start(options->shadeHoverInterval());
}
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(0);
}
return;
}
}