diff --git a/abstract_client.cpp b/abstract_client.cpp
index cdfcc728c..ebba445a5 100644
--- a/abstract_client.cpp
+++ b/abstract_client.cpp
@@ -1,3273 +1,3294 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 #include "abstract_client.h"
 
 #include "appmenu.h"
 #include "decorations/decoratedclient.h"
 #include "decorations/decorationpalette.h"
 #include "decorations/decorationbridge.h"
 #include "cursor.h"
 #include "effects.h"
 #include "focuschain.h"
 #include "outline.h"
 #include "screens.h"
 #ifdef KWIN_BUILD_TABBOX
 #include "tabbox.h"
 #endif
 #include "screenedge.h"
 #include "useractions.h"
 #include "workspace.h"
 
 #include "wayland_server.h"
 #include <KWayland/Server/plasmawindowmanagement_interface.h>
 
 #include <KDecoration2/Decoration>
 
 #include <KDesktopFile>
 
 #include <QMouseEvent>
 #include <QStyleHints>
 
 namespace KWin
 {
 
 static inline int sign(int v)
 {
     return (v > 0) - (v < 0);
 }
 
 QHash<QString, std::weak_ptr<Decoration::DecorationPalette>> AbstractClient::s_palettes;
 std::shared_ptr<Decoration::DecorationPalette> AbstractClient::s_defaultPalette;
 
 AbstractClient::AbstractClient()
     : Toplevel()
 #ifdef KWIN_BUILD_TABBOX
     , m_tabBoxClient(QSharedPointer<TabBox::TabBoxClientImpl>(new TabBox::TabBoxClientImpl(this)))
 #endif
     , m_colorScheme(QStringLiteral("kdeglobals"))
 {
     connect(this, &AbstractClient::clientStartUserMovedResized,  this, &AbstractClient::moveResizedChanged);
     connect(this, &AbstractClient::clientFinishUserMovedResized, this, &AbstractClient::moveResizedChanged);
     connect(this, &AbstractClient::clientStartUserMovedResized,  this, &AbstractClient::removeCheckScreenConnection);
     connect(this, &AbstractClient::clientFinishUserMovedResized, this, &AbstractClient::setupCheckScreenConnection);
 
     connect(this, &AbstractClient::paletteChanged, this, &AbstractClient::triggerDecorationRepaint);
 
     connect(Decoration::DecorationBridge::self(), &QObject::destroyed, this, &AbstractClient::destroyDecoration);
 
     // If the user manually moved the window, don't restore it after the keyboard closes
     connect(this, &AbstractClient::clientFinishUserMovedResized, this, [this] () {
         m_keyboardGeometryRestore = QRect();
     });
     connect(this, qOverload<AbstractClient *, bool, bool>(&AbstractClient::clientMaximizedStateChanged), this, [this] () {
         m_keyboardGeometryRestore = QRect();
     });
     connect(this, &AbstractClient::fullScreenChanged, this, [this] () {
         m_keyboardGeometryRestore = QRect();
     });
 
     // replace on-screen-display on size changes
     connect(this, &AbstractClient::frameGeometryChanged, this,
         [this] (Toplevel *c, const QRect &old) {
             Q_UNUSED(c)
             if (isOnScreenDisplay() && !frameGeometry().isEmpty() && old.size() != frameGeometry().size() && !isInitialPositionSet()) {
                 GeometryUpdatesBlocker blocker(this);
                 const QRect area = workspace()->clientArea(PlacementArea, Screens::self()->current(), desktop());
                 Placement::self()->place(this, area);
                 setGeometryRestore(frameGeometry());
             }
         }
     );
 
     connect(this, &AbstractClient::paddingChanged, this, [this]() {
         m_visibleRectBeforeGeometryUpdate = visibleRect();
     });
 
     connect(ApplicationMenu::self(), &ApplicationMenu::applicationMenuEnabledChanged, this, [this] {
         emit hasApplicationMenuChanged(hasApplicationMenu());
     });
 }
 
 AbstractClient::~AbstractClient()
 {
     Q_ASSERT(m_blockGeometryUpdates == 0);
     Q_ASSERT(m_decoration.decoration == nullptr);
 }
 
 void AbstractClient::updateMouseGrab()
 {
 }
 
 bool AbstractClient::belongToSameApplication(const AbstractClient *c1, const AbstractClient *c2, SameApplicationChecks checks)
 {
     return c1->belongsToSameApplication(c2, checks);
 }
 
 bool AbstractClient::isTransient() const
 {
     return false;
 }
 
 void AbstractClient::setClientShown(bool shown)
 {
     Q_UNUSED(shown)
 }
 
 xcb_timestamp_t AbstractClient::userTime() const
 {
     return XCB_TIME_CURRENT_TIME;
 }
 
 void AbstractClient::setSkipSwitcher(bool set)
 {
     set = rules()->checkSkipSwitcher(set);
     if (set == skipSwitcher())
         return;
     m_skipSwitcher = set;
     doSetSkipSwitcher();
     updateWindowRules(Rules::SkipSwitcher);
     emit skipSwitcherChanged();
 }
 
 void AbstractClient::setSkipPager(bool b)
 {
     b = rules()->checkSkipPager(b);
     if (b == skipPager())
         return;
     m_skipPager = b;
     doSetSkipPager();
     updateWindowRules(Rules::SkipPager);
     emit skipPagerChanged();
 }
 
 void AbstractClient::doSetSkipPager()
 {
 }
 
 void AbstractClient::setSkipTaskbar(bool b)
 {
     int was_wants_tab_focus = wantsTabFocus();
     if (b == skipTaskbar())
         return;
     m_skipTaskbar = b;
     doSetSkipTaskbar();
     updateWindowRules(Rules::SkipTaskbar);
     if (was_wants_tab_focus != wantsTabFocus()) {
         FocusChain::self()->update(this, isActive() ? FocusChain::MakeFirst : FocusChain::Update);
     }
     emit skipTaskbarChanged();
 }
 
 void AbstractClient::setOriginalSkipTaskbar(bool b)
 {
     m_originalSkipTaskbar = rules()->checkSkipTaskbar(b);
     setSkipTaskbar(m_originalSkipTaskbar);
 }
 
 void AbstractClient::doSetSkipTaskbar()
 {
 
 }
 
 void AbstractClient::doSetSkipSwitcher()
 {
 
 }
 
 void AbstractClient::setIcon(const QIcon &icon)
 {
     m_icon = icon;
     emit iconChanged();
 }
 
 void AbstractClient::setActive(bool act)
 {
     if (m_active == act) {
         return;
     }
     m_active = act;
     const int ruledOpacity = m_active
                              ? rules()->checkOpacityActive(qRound(opacity() * 100.0))
                              : rules()->checkOpacityInactive(qRound(opacity() * 100.0));
     setOpacity(ruledOpacity / 100.0);
     workspace()->setActiveClient(act ? this : nullptr);
 
     if (!m_active)
         cancelAutoRaise();
 
     if (!m_active && shadeMode() == ShadeActivated)
         setShade(ShadeNormal);
 
     StackingUpdatesBlocker blocker(workspace());
     workspace()->updateClientLayer(this);   // active windows may get different layer
     auto mainclients = mainClients();
     for (auto it = mainclients.constBegin();
             it != mainclients.constEnd();
             ++it)
         if ((*it)->isFullScreen())  // fullscreens go high even if their transient is active
             workspace()->updateClientLayer(*it);
 
     doSetActive();
     emit activeChanged();
     updateMouseGrab();
 }
 
 void AbstractClient::doSetActive()
 {
 }
 
 Layer AbstractClient::layer() const
 {
     if (m_layer == UnknownLayer)
         const_cast< AbstractClient* >(this)->m_layer = belongsToLayer();
     return m_layer;
 }
 
 void AbstractClient::updateLayer()
 {
     if (layer() == belongsToLayer())
         return;
     StackingUpdatesBlocker blocker(workspace());
     invalidateLayer(); // invalidate, will be updated when doing restacking
     for (auto it = transients().constBegin(),
                                   end = transients().constEnd(); it != end; ++it)
         (*it)->updateLayer();
 }
 
 void AbstractClient::placeIn(const QRect &area)
 {
     // TODO: Get rid of this method eventually. We need to call setGeometryRestore() because
     // checkWorkspacePosition() operates on geometryRestore() and because of quick tiling.
     Placement::self()->place(this, area);
     setGeometryRestore(frameGeometry());
 }
 
 void AbstractClient::invalidateLayer()
 {
     m_layer = UnknownLayer;
 }
 
 Layer AbstractClient::belongsToLayer() const
 {
     // NOTICE while showingDesktop, desktops move to the AboveLayer
     // (interchangeable w/ eg. yakuake etc. which will at first remain visible)
     // and the docks move into the NotificationLayer (which is between Above- and
     // ActiveLayer, so that active fullscreen windows will still cover everything)
     // Since the desktop is also activated, nothing should be in the ActiveLayer, though
     if (isInternal())
         return UnmanagedLayer;
     if (isDesktop())
         return workspace()->showingDesktop() ? AboveLayer : DesktopLayer;
     if (isSplash())          // no damn annoying splashscreens
         return NormalLayer; // getting in the way of everything else
     if (isDock()) {
         if (workspace()->showingDesktop())
             return NotificationLayer;
         return layerForDock();
     }
     if (isOnScreenDisplay())
         return OnScreenDisplayLayer;
     if (isNotification())
         return NotificationLayer;
     if (isCriticalNotification())
         return CriticalNotificationLayer;
     if (workspace()->showingDesktop() && belongsToDesktop()) {
         return AboveLayer;
     }
     if (keepBelow())
         return BelowLayer;
     if (isActiveFullScreen())
         return ActiveLayer;
     if (keepAbove())
         return AboveLayer;
 
     return NormalLayer;
 }
 
 bool AbstractClient::belongsToDesktop() const
 {
     return false;
 }
 
 Layer AbstractClient::layerForDock() const
 {
     // slight hack for the 'allow window to cover panel' Kicker setting
     // don't move keepbelow docks below normal window, but only to the same
     // layer, so that both may be raised to cover the other
     if (keepBelow())
         return NormalLayer;
     if (keepAbove()) // slight hack for the autohiding panels
         return AboveLayer;
     return DockLayer;
 }
 
 void AbstractClient::setKeepAbove(bool b)
 {
     b = rules()->checkKeepAbove(b);
     if (b && !rules()->checkKeepBelow(false))
         setKeepBelow(false);
     if (b == keepAbove()) {
         return;
     }
     m_keepAbove = b;
     doSetKeepAbove();
     workspace()->updateClientLayer(this);
     updateWindowRules(Rules::Above);
 
     emit keepAboveChanged(m_keepAbove);
 }
 
 void AbstractClient::doSetKeepAbove()
 {
 }
 
 void AbstractClient::setKeepBelow(bool b)
 {
     b = rules()->checkKeepBelow(b);
     if (b && !rules()->checkKeepAbove(false))
         setKeepAbove(false);
     if (b == keepBelow()) {
         return;
     }
     m_keepBelow = b;
     doSetKeepBelow();
     workspace()->updateClientLayer(this);
     updateWindowRules(Rules::Below);
 
     emit keepBelowChanged(m_keepBelow);
 }
 
 void AbstractClient::doSetKeepBelow()
 {
 }
 
 void AbstractClient::startAutoRaise()
 {
     delete m_autoRaiseTimer;
     m_autoRaiseTimer = new QTimer(this);
     connect(m_autoRaiseTimer, &QTimer::timeout, this, &AbstractClient::autoRaise);
     m_autoRaiseTimer->setSingleShot(true);
     m_autoRaiseTimer->start(options->autoRaiseInterval());
 }
 
 void AbstractClient::cancelAutoRaise()
 {
     delete m_autoRaiseTimer;
     m_autoRaiseTimer = nullptr;
 }
 
 void AbstractClient::autoRaise()
 {
     workspace()->raiseClient(this);
     cancelAutoRaise();
 }
 
 bool AbstractClient::wantsTabFocus() const
 {
     return (isNormalWindow() || isDialog()) && wantsInput();
 }
 
 bool AbstractClient::isSpecialWindow() const
 {
     // TODO
     return isDesktop() || isDock() || isSplash() || isToolbar() || isNotification() || isOnScreenDisplay() || isCriticalNotification();
 }
 
 void AbstractClient::demandAttention(bool set)
 {
     if (isActive())
         set = false;
     if (m_demandsAttention == set)
         return;
     m_demandsAttention = set;
     doSetDemandsAttention();
     workspace()->clientAttentionChanged(this, set);
     emit demandsAttentionChanged();
 }
 
 void AbstractClient::doSetDemandsAttention()
 {
 }
 
 void AbstractClient::setDesktop(int desktop)
 {
     const int numberOfDesktops = VirtualDesktopManager::self()->count();
     if (desktop != NET::OnAllDesktops)   // Do range check
         desktop = qMax(1, qMin(numberOfDesktops, desktop));
     desktop = qMin(numberOfDesktops, rules()->checkDesktop(desktop));
 
     QVector<VirtualDesktop *> desktops;
     if (desktop != NET::OnAllDesktops) {
        desktops << VirtualDesktopManager::self()->desktopForX11Id(desktop);
     }
     setDesktops(desktops);
 }
 
 void AbstractClient::setDesktops(QVector<VirtualDesktop*> desktops)
 {
     //on x11 we can have only one desktop at a time
     if (kwinApp()->operationMode() == Application::OperationModeX11 && desktops.size() > 1) {
         desktops = QVector<VirtualDesktop*>({desktops.last()});
     }
 
     if (desktops == m_desktops) {
         return;
     }
 
     int was_desk = AbstractClient::desktop();
     const bool wasOnCurrentDesktop = isOnCurrentDesktop() && was_desk >= 0;
 
     m_desktops = desktops;
 
     if (windowManagementInterface()) {
         if (m_desktops.isEmpty()) {
             windowManagementInterface()->setOnAllDesktops(true);
         } else {
             windowManagementInterface()->setOnAllDesktops(false);
             auto currentDesktops = windowManagementInterface()->plasmaVirtualDesktops();
             for (auto desktop: m_desktops) {
                 if (!currentDesktops.contains(desktop->id())) {
                     windowManagementInterface()->addPlasmaVirtualDesktop(desktop->id());
                 } else {
                     currentDesktops.removeOne(desktop->id());
                 }
             }
             for (auto desktopId: currentDesktops) {
                 windowManagementInterface()->removePlasmaVirtualDesktop(desktopId);
             }
         }
     }
     if (info) {
         info->setDesktop(desktop());
     }
 
     if ((was_desk == NET::OnAllDesktops) != (desktop() == NET::OnAllDesktops)) {
         // onAllDesktops changed
         workspace()->updateOnAllDesktopsOfTransients(this);
     }
 
     auto transients_stacking_order = workspace()->ensureStackingOrder(transients());
     for (auto it = transients_stacking_order.constBegin();
             it != transients_stacking_order.constEnd();
             ++it)
         (*it)->setDesktops(desktops);
 
     if (isModal())  // if a modal dialog is moved, move the mainwindow with it as otherwise
         // the (just moved) modal dialog will confusingly return to the mainwindow with
         // the next desktop change
     {
         foreach (AbstractClient * c2, mainClients())
         c2->setDesktops(desktops);
     }
 
     doSetDesktop();
 
     FocusChain::self()->update(this, FocusChain::MakeFirst);
     updateWindowRules(Rules::Desktop);
 
     emit desktopChanged();
     if (wasOnCurrentDesktop != isOnCurrentDesktop())
         emit desktopPresenceChanged(this, was_desk);
     emit x11DesktopIdsChanged();
 }
 
 void AbstractClient::doSetDesktop()
 {
 }
 
 void AbstractClient::enterDesktop(VirtualDesktop *virtualDesktop)
 {
     if (m_desktops.contains(virtualDesktop)) {
         return;
     }
     auto desktops = m_desktops;
     desktops.append(virtualDesktop);
     setDesktops(desktops);
 }
 
 void AbstractClient::leaveDesktop(VirtualDesktop *virtualDesktop)
 {
     QVector<VirtualDesktop*> currentDesktops;
     if (m_desktops.isEmpty()) {
         currentDesktops = VirtualDesktopManager::self()->desktops();
     } else {
         currentDesktops = m_desktops;
     }
 
     if (!currentDesktops.contains(virtualDesktop)) {
         return;
     }
     auto desktops = currentDesktops;
     desktops.removeOne(virtualDesktop);
     setDesktops(desktops);
 }
 
 void AbstractClient::setOnAllDesktops(bool b)
 {
     if ((b && isOnAllDesktops()) ||
             (!b && !isOnAllDesktops()))
         return;
     if (b)
         setDesktop(NET::OnAllDesktops);
     else
         setDesktop(VirtualDesktopManager::self()->current());
 }
 
 QVector<uint> AbstractClient::x11DesktopIds() const
 {
     const auto desks = desktops();
     QVector<uint> x11Ids;
     x11Ids.reserve(desks.count());
     std::transform(desks.constBegin(), desks.constEnd(),
         std::back_inserter(x11Ids),
         [] (const VirtualDesktop *vd) {
             return vd->x11DesktopNumber();
         }
     );
     return x11Ids;
 }
 
 bool AbstractClient::isShadeable() const
 {
     return false;
 }
 
 void AbstractClient::setShade(bool set)
 {
     set ? setShade(ShadeNormal) : setShade(ShadeNone);
 }
 
 void AbstractClient::setShade(ShadeMode mode)
 {
     Q_UNUSED(mode)
 }
 
 ShadeMode AbstractClient::shadeMode() const
 {
     return ShadeNone;
 }
 
 AbstractClient::Position AbstractClient::titlebarPosition() const
 {
     // TODO: still needed, remove?
     return PositionTop;
 }
 
 bool AbstractClient::titlebarPositionUnderMouse() const
 {
     if (!isDecorated()) {
         return false;
     }
     const auto sectionUnderMouse = decoration()->sectionUnderMouse();
     if (sectionUnderMouse == Qt::TitleBarArea) {
         return true;
     }
     // check other sections based on titlebarPosition
     switch (titlebarPosition()) {
     case AbstractClient::PositionTop:
         return (sectionUnderMouse == Qt::TopLeftSection || sectionUnderMouse == Qt::TopSection || sectionUnderMouse == Qt::TopRightSection);
     case AbstractClient::PositionLeft:
         return (sectionUnderMouse == Qt::TopLeftSection || sectionUnderMouse == Qt::LeftSection || sectionUnderMouse == Qt::BottomLeftSection);
     case AbstractClient::PositionRight:
         return (sectionUnderMouse == Qt::BottomRightSection || sectionUnderMouse == Qt::RightSection || sectionUnderMouse == Qt::TopRightSection);
     case AbstractClient::PositionBottom:
         return (sectionUnderMouse == Qt::BottomLeftSection || sectionUnderMouse == Qt::BottomSection || sectionUnderMouse == Qt::BottomRightSection);
     default:
         // nothing
         return false;
     }
 }
 
 void AbstractClient::setMinimized(bool set)
 {
     set ? minimize() : unminimize();
 }
 
 void AbstractClient::minimize(bool avoid_animation)
 {
     if (!isMinimizable() || isMinimized())
         return;
 
     m_minimized = true;
     doMinimize();
 
     updateWindowRules(Rules::Minimize);
     FocusChain::self()->update(this, FocusChain::MakeFirstMinimized);
     // TODO: merge signal with s_minimized
     addWorkspaceRepaint(visibleRect());
     emit clientMinimized(this, !avoid_animation);
     emit minimizedChanged();
 }
 
 void AbstractClient::unminimize(bool avoid_animation)
 {
     if (!isMinimized())
         return;
 
     if (rules()->checkMinimize(false)) {
         return;
     }
 
     m_minimized = false;
     doMinimize();
 
     updateWindowRules(Rules::Minimize);
     emit clientUnminimized(this, !avoid_animation);
     emit minimizedChanged();
 }
 
 void AbstractClient::doMinimize()
 {
 }
 
 QPalette AbstractClient::palette() const
 {
     if (!m_palette) {
         return QPalette();
     }
     return m_palette->palette();
 }
 
 const Decoration::DecorationPalette *AbstractClient::decorationPalette() const
 {
     return m_palette.get();
 }
 
 void AbstractClient::updateColorScheme(QString path)
 {
     if (path.isEmpty()) {
         path = QStringLiteral("kdeglobals");
     }
 
     if (!m_palette || m_colorScheme != path) {
         m_colorScheme = path;
 
         if (m_palette) {
             disconnect(m_palette.get(), &Decoration::DecorationPalette::changed, this, &AbstractClient::handlePaletteChange);
         }
 
         auto it = s_palettes.find(m_colorScheme);
 
         if (it == s_palettes.end() || it->expired()) {
             m_palette = std::make_shared<Decoration::DecorationPalette>(m_colorScheme);
             if (m_palette->isValid()) {
                 s_palettes[m_colorScheme] = m_palette;
             } else {
                 if (!s_defaultPalette) {
                     s_defaultPalette = std::make_shared<Decoration::DecorationPalette>(QStringLiteral("kdeglobals"));
                     s_palettes[QStringLiteral("kdeglobals")] = s_defaultPalette;
                 }
 
                 m_palette = s_defaultPalette;
             }
 
             if (m_colorScheme == QStringLiteral("kdeglobals")) {
                 s_defaultPalette = m_palette;
             }
         } else {
             m_palette = it->lock();
         }
 
         connect(m_palette.get(), &Decoration::DecorationPalette::changed, this, &AbstractClient::handlePaletteChange);
 
         emit paletteChanged(palette());
         emit colorSchemeChanged();
     }
 }
 
 void AbstractClient::handlePaletteChange()
 {
     emit paletteChanged(palette());
 }
 
 void AbstractClient::keepInArea(QRect area, bool partial)
 {
     if (partial) {
         // increase the area so that can have only 100 pixels in the area
         area.setLeft(qMin(area.left() - width() + 100, area.left()));
         area.setTop(qMin(area.top() - height() + 100, area.top()));
         area.setRight(qMax(area.right() + width() - 100, area.right()));
         area.setBottom(qMax(area.bottom() + height() - 100, area.bottom()));
     }
     if (!partial) {
         // resize to fit into area
         if (area.width() < width() || area.height() < height())
             resizeWithChecks(qMin(area.width(), width()), qMin(area.height(), height()));
     }
     int tx = x(), ty = y();
     if (frameGeometry().right() > area.right() && width() <= area.width())
         tx = area.right() - width() + 1;
     if (frameGeometry().bottom() > area.bottom() && height() <= area.height())
         ty = area.bottom() - height() + 1;
     if (!area.contains(frameGeometry().topLeft())) {
         if (tx < area.x())
             tx = area.x();
         if (ty < area.y())
             ty = area.y();
     }
     if (tx != x() || ty != y())
         move(tx, ty);
 }
 
 /**
  * Returns the maximum client size, not the maximum frame size.
  */
 QSize AbstractClient::maxSize() const
 {
     return rules()->checkMaxSize(QSize(INT_MAX, INT_MAX));
 }
 
 /**
  * Returns the minimum client size, not the minimum frame size.
  */
 QSize AbstractClient::minSize() const
 {
     return rules()->checkMinSize(QSize(0, 0));
 }
 
 void AbstractClient::blockGeometryUpdates(bool block)
 {
     if (block) {
         if (m_blockGeometryUpdates == 0)
             m_pendingGeometryUpdate = PendingGeometryNone;
         ++m_blockGeometryUpdates;
     } else {
         if (--m_blockGeometryUpdates == 0) {
             if (m_pendingGeometryUpdate != PendingGeometryNone) {
                 if (isShade())
                     setFrameGeometry(QRect(pos(), adjustedSize()), NormalGeometrySet);
                 else
                     setFrameGeometry(frameGeometry(), NormalGeometrySet);
                 m_pendingGeometryUpdate = PendingGeometryNone;
             }
         }
     }
 }
 
 void AbstractClient::maximize(MaximizeMode m)
 {
     setMaximize(m & MaximizeVertical, m & MaximizeHorizontal);
 }
 
 void AbstractClient::setMaximize(bool vertically, bool horizontally)
 {
     // changeMaximize() flips the state, so change from set->flip
     const MaximizeMode oldMode = maximizeMode();
     changeMaximize(
         oldMode & MaximizeHorizontal ? !horizontally : horizontally,
         oldMode & MaximizeVertical ? !vertically : vertically,
         false);
     const MaximizeMode newMode = maximizeMode();
     if (oldMode != newMode) {
         emit clientMaximizedStateChanged(this, newMode);
         emit clientMaximizedStateChanged(this, vertically, horizontally);
     }
 }
 
 void AbstractClient::move(int x, int y, ForceGeometry_t force)
 {
     // resuming geometry updates is handled only in setGeometry()
     Q_ASSERT(pendingGeometryUpdate() == PendingGeometryNone || areGeometryUpdatesBlocked());
     QPoint p(x, y);
     if (!areGeometryUpdatesBlocked() && p != rules()->checkPosition(p)) {
         qCDebug(KWIN_CORE) << "forced position fail:" << p << ":" << rules()->checkPosition(p);
     }
     if (force == NormalGeometrySet && m_frameGeometry.topLeft() == p)
         return;
     m_frameGeometry.moveTopLeft(p);
     if (areGeometryUpdatesBlocked()) {
         if (pendingGeometryUpdate() == PendingGeometryForced)
             {} // maximum, nothing needed
         else if (force == ForceGeometrySet)
             setPendingGeometryUpdate(PendingGeometryForced);
         else
             setPendingGeometryUpdate(PendingGeometryNormal);
         return;
     }
     doMove(x, y);
     updateWindowRules(Rules::Position);
     screens()->setCurrent(this);
     workspace()->updateStackingOrder();
     // client itself is not damaged
     emit frameGeometryChanged(this, frameGeometryBeforeUpdateBlocking());
     addRepaintDuringGeometryUpdates();
     updateGeometryBeforeUpdateBlocking();
 }
 
 bool AbstractClient::startMoveResize()
 {
     Q_ASSERT(!isMoveResize());
     Q_ASSERT(QWidget::keyboardGrabber() == nullptr);
     Q_ASSERT(QWidget::mouseGrabber() == nullptr);
     stopDelayedMoveResize();
     if (QApplication::activePopupWidget() != nullptr)
         return false; // popups have grab
     if (isFullScreen() && (screens()->count() < 2 || !isMovableAcrossScreens()))
         return false;
     if (!doStartMoveResize()) {
         return false;
     }
 
     invalidateDecorationDoubleClickTimer();
 
     setMoveResize(true);
     workspace()->setMoveResizeClient(this);
 
     const Position mode = moveResizePointerMode();
     if (mode != PositionCenter) { // means "isResize()" but moveResizeMode = true is set below
         if (maximizeMode() == MaximizeFull) { // partial is cond. reset in finishMoveResize
             setGeometryRestore(frameGeometry()); // "restore" to current geometry
             setMaximize(false, false);
         }
     }
 
     if (quickTileMode() != QuickTileMode(QuickTileFlag::None) && mode != PositionCenter) { // Cannot use isResize() yet
         // Exit quick tile mode when the user attempts to resize a tiled window
         updateQuickTileMode(QuickTileFlag::None); // Do so without restoring original geometry
         setGeometryRestore(frameGeometry());
         emit quickTileModeChanged();
     }
 
     updateHaveResizeEffect();
     updateInitialMoveResizeGeometry();
     checkUnrestrictedMoveResize();
     emit clientStartUserMovedResized(this);
     if (ScreenEdges::self()->isDesktopSwitchingMovingClients())
         ScreenEdges::self()->reserveDesktopSwitching(true, Qt::Vertical|Qt::Horizontal);
     return true;
 }
 
 void AbstractClient::finishMoveResize(bool cancel)
 {
     GeometryUpdatesBlocker blocker(this);
     const bool wasResize = isResize(); // store across leaveMoveResize
     leaveMoveResize();
 
     if (cancel)
         setFrameGeometry(initialMoveResizeGeometry());
     else {
         const QRect &moveResizeGeom = moveResizeGeometry();
         if (wasResize) {
             const bool restoreH = maximizeMode() == MaximizeHorizontal &&
                                     moveResizeGeom.width() != initialMoveResizeGeometry().width();
             const bool restoreV = maximizeMode() == MaximizeVertical &&
                                     moveResizeGeom.height() != initialMoveResizeGeometry().height();
             if (restoreH || restoreV) {
                 changeMaximize(restoreH, restoreV, false);
             }
         }
         setFrameGeometry(moveResizeGeom);
     }
     checkScreen(); // needs to be done because clientFinishUserMovedResized has not yet re-activated online alignment
     if (screen() != moveResizeStartScreen()) {
         workspace()->sendClientToScreen(this, screen()); // checks rule validity
         if (maximizeMode() != MaximizeRestore)
             checkWorkspacePosition();
     }
 
     if (isElectricBorderMaximizing()) {
         setQuickTileMode(electricBorderMode());
         setElectricBorderMaximizing(false);
     } else if (!cancel) {
         QRect geom_restore = geometryRestore();
         if (!(maximizeMode() & MaximizeHorizontal)) {
             geom_restore.setX(frameGeometry().x());
             geom_restore.setWidth(frameGeometry().width());
         }
         if (!(maximizeMode() & MaximizeVertical)) {
             geom_restore.setY(frameGeometry().y());
             geom_restore.setHeight(frameGeometry().height());
         }
         setGeometryRestore(geom_restore);
     }
 // FRAME    update();
 
     emit clientFinishUserMovedResized(this);
 }
 
 // This function checks if it actually makes sense to perform a restricted move/resize.
 // If e.g. the titlebar is already outside of the workarea, there's no point in performing
 // a restricted move resize, because then e.g. resize would also move the window (#74555).
 // NOTE: Most of it is duplicated from handleMoveResize().
 void AbstractClient::checkUnrestrictedMoveResize()
 {
     if (isUnrestrictedMoveResize())
         return;
     const QRect &moveResizeGeom = moveResizeGeometry();
     QRect desktopArea = workspace()->clientArea(WorkArea, moveResizeGeom.center(), desktop());
     int left_marge, right_marge, top_marge, bottom_marge, titlebar_marge;
     // restricted move/resize - keep at least part of the titlebar always visible
     // how much must remain visible when moved away in that direction
     left_marge = qMin(100 + borderRight(), moveResizeGeom.width());
     right_marge = qMin(100 + borderLeft(), moveResizeGeom.width());
     // width/height change with opaque resizing, use the initial ones
     titlebar_marge = initialMoveResizeGeometry().height();
     top_marge = borderBottom();
     bottom_marge = borderTop();
     if (isResize()) {
         if (moveResizeGeom.bottom() < desktopArea.top() + top_marge)
             setUnrestrictedMoveResize(true);
         if (moveResizeGeom.top() > desktopArea.bottom() - bottom_marge)
             setUnrestrictedMoveResize(true);
         if (moveResizeGeom.right() < desktopArea.left() + left_marge)
             setUnrestrictedMoveResize(true);
         if (moveResizeGeom.left() > desktopArea.right() - right_marge)
             setUnrestrictedMoveResize(true);
         if (!isUnrestrictedMoveResize() && moveResizeGeom.top() < desktopArea.top())   // titlebar mustn't go out
             setUnrestrictedMoveResize(true);
     }
     if (isMove()) {
         if (moveResizeGeom.bottom() < desktopArea.top() + titlebar_marge - 1)
             setUnrestrictedMoveResize(true);
         // no need to check top_marge, titlebar_marge already handles it
         if (moveResizeGeom.top() > desktopArea.bottom() - bottom_marge + 1) // titlebar mustn't go out
             setUnrestrictedMoveResize(true);
         if (moveResizeGeom.right() < desktopArea.left() + left_marge)
             setUnrestrictedMoveResize(true);
         if (moveResizeGeom.left() > desktopArea.right() - right_marge)
             setUnrestrictedMoveResize(true);
     }
 }
 
 // When the user pressed mouse on the titlebar, don't activate move immediatelly,
 // since it may be just a click. Activate instead after a delay. Move used to be
 // activated only after moving by several pixels, but that looks bad.
 void AbstractClient::startDelayedMoveResize()
 {
     Q_ASSERT(!m_moveResize.delayedTimer);
     m_moveResize.delayedTimer = new QTimer(this);
     m_moveResize.delayedTimer->setSingleShot(true);
     connect(m_moveResize.delayedTimer, &QTimer::timeout, this,
         [this]() {
             Q_ASSERT(isMoveResizePointerButtonDown());
             if (!startMoveResize()) {
                 setMoveResizePointerButtonDown(false);
             }
             updateCursor();
             stopDelayedMoveResize();
         }
     );
     m_moveResize.delayedTimer->start(QApplication::startDragTime());
 }
 
 void AbstractClient::stopDelayedMoveResize()
 {
     delete m_moveResize.delayedTimer;
     m_moveResize.delayedTimer = nullptr;
 }
 
 void AbstractClient::updateMoveResize(const QPointF &currentGlobalCursor)
 {
     handleMoveResize(pos(), currentGlobalCursor.toPoint());
 }
 
 void AbstractClient::handleMoveResize(const QPoint &local, const QPoint &global)
 {
     const QRect oldGeo = frameGeometry();
     handleMoveResize(local.x(), local.y(), global.x(), global.y());
     if (!isFullScreen() && isMove()) {
         if (quickTileMode() != QuickTileMode(QuickTileFlag::None) && oldGeo != frameGeometry()) {
             GeometryUpdatesBlocker blocker(this);
             setQuickTileMode(QuickTileFlag::None);
             const QRect &geom_restore = geometryRestore();
             setMoveOffset(QPoint(double(moveOffset().x()) / double(oldGeo.width()) * double(geom_restore.width()),
                                  double(moveOffset().y()) / double(oldGeo.height()) * double(geom_restore.height())));
             if (rules()->checkMaximize(MaximizeRestore) == MaximizeRestore)
                 setMoveResizeGeometry(geom_restore);
             handleMoveResize(local.x(), local.y(), global.x(), global.y()); // fix position
         } else if (quickTileMode() == QuickTileMode(QuickTileFlag::None) && isResizable()) {
             checkQuickTilingMaximizationZones(global.x(), global.y());
         }
     }
 }
 
 void AbstractClient::handleMoveResize(int x, int y, int x_root, int y_root)
 {
     if (isWaitingForMoveResizeSync())
         return; // we're still waiting for the client or the timeout
 
     const Position mode = moveResizePointerMode();
     if ((mode == PositionCenter && !isMovableAcrossScreens())
             || (mode != PositionCenter && (isShade() || !isResizable())))
         return;
 
     if (!isMoveResize()) {
         QPoint p(QPoint(x/* - padding_left*/, y/* - padding_top*/) - moveOffset());
         if (p.manhattanLength() >= QApplication::startDragDistance()) {
             if (!startMoveResize()) {
                 setMoveResizePointerButtonDown(false);
                 updateCursor();
                 return;
             }
             updateCursor();
         } else
             return;
     }
 
     // ShadeHover or ShadeActive, ShadeNormal was already avoided above
     if (mode != PositionCenter && shadeMode() != ShadeNone)
         setShade(ShadeNone);
 
     QPoint globalPos(x_root, y_root);
     // these two points limit the geometry rectangle, i.e. if bottomleft resizing is done,
     // the bottomleft corner should be at is at (topleft.x(), bottomright().y())
     QPoint topleft = globalPos - moveOffset();
     QPoint bottomright = globalPos + invertedMoveOffset();
     QRect previousMoveResizeGeom = moveResizeGeometry();
 
     // TODO move whole group when moving its leader or when the leader is not mapped?
 
     auto titleBarRect = [this](bool &transposed, int &requiredPixels) -> QRect {
         const QRect &moveResizeGeom = moveResizeGeometry();
         QRect r(moveResizeGeom);
         r.moveTopLeft(QPoint(0,0));
         switch (titlebarPosition()) {
         default:
         case PositionTop:
             r.setHeight(borderTop());
             break;
         case PositionLeft:
             r.setWidth(borderLeft());
             transposed = true;
             break;
         case PositionBottom:
             r.setTop(r.bottom() - borderBottom());
             break;
         case PositionRight:
             r.setLeft(r.right() - borderRight());
             transposed = true;
             break;
         }
         // When doing a restricted move we must always keep 100px of the titlebar
         // visible to allow the user to be able to move it again.
         requiredPixels = qMin(100 * (transposed ? r.width() : r.height()),
                               moveResizeGeom.width() * moveResizeGeom.height());
         return r;
     };
 
     bool update = false;
     if (isResize()) {
         QRect orig = initialMoveResizeGeometry();
         SizeMode sizeMode = SizeModeAny;
         auto calculateMoveResizeGeom = [this, &topleft, &bottomright, &orig, &sizeMode, &mode]() {
             switch(mode) {
             case PositionTopLeft:
                 setMoveResizeGeometry(QRect(topleft, orig.bottomRight()));
                 break;
             case PositionBottomRight:
                 setMoveResizeGeometry(QRect(orig.topLeft(), bottomright));
                 break;
             case PositionBottomLeft:
                 setMoveResizeGeometry(QRect(QPoint(topleft.x(), orig.y()), QPoint(orig.right(), bottomright.y())));
                 break;
             case PositionTopRight:
                 setMoveResizeGeometry(QRect(QPoint(orig.x(), topleft.y()), QPoint(bottomright.x(), orig.bottom())));
                 break;
             case PositionTop:
                 setMoveResizeGeometry(QRect(QPoint(orig.left(), topleft.y()), orig.bottomRight()));
                 sizeMode = SizeModeFixedH; // try not to affect height
                 break;
             case PositionBottom:
                 setMoveResizeGeometry(QRect(orig.topLeft(), QPoint(orig.right(), bottomright.y())));
                 sizeMode = SizeModeFixedH;
                 break;
             case PositionLeft:
                 setMoveResizeGeometry(QRect(QPoint(topleft.x(), orig.top()), orig.bottomRight()));
                 sizeMode = SizeModeFixedW;
                 break;
             case PositionRight:
                 setMoveResizeGeometry(QRect(orig.topLeft(), QPoint(bottomright.x(), orig.bottom())));
                 sizeMode = SizeModeFixedW;
                 break;
             case PositionCenter:
             default:
                 abort();
                 break;
             }
         };
 
         // first resize (without checking constrains), then snap, then check bounds, then check constrains
         calculateMoveResizeGeom();
         // adjust new size to snap to other windows/borders
         setMoveResizeGeometry(workspace()->adjustClientSize(this, moveResizeGeometry(), mode));
 
         if (!isUnrestrictedMoveResize()) {
             // Make sure the titlebar isn't behind a restricted area. We don't need to restrict
             // the other directions. If not visible enough, move the window to the closest valid
             // point. We bruteforce this by slowly moving the window back to its previous position
             QRegion availableArea(workspace()->clientArea(FullArea, -1, 0));   // On the screen
             availableArea -= workspace()->restrictedMoveArea(desktop());   // Strut areas
             bool transposed = false;
             int requiredPixels;
             QRect bTitleRect = titleBarRect(transposed, requiredPixels);
             int lastVisiblePixels = -1;
             QRect lastTry = moveResizeGeometry();
             bool titleFailed = false;
             for (;;) {
                 const QRect titleRect(bTitleRect.translated(moveResizeGeometry().topLeft()));
                 int visiblePixels = 0;
                 int realVisiblePixels = 0;
                 for (const QRect &rect : availableArea) {
                     const QRect r = rect & titleRect;
                     realVisiblePixels += r.width() * r.height();
                     if ((transposed && r.width() == titleRect.width()) || // Only the full size regions...
                         (!transposed && r.height() == titleRect.height())) // ...prevents long slim areas
                         visiblePixels += r.width() * r.height();
                 }
 
                 if (visiblePixels >= requiredPixels)
                     break; // We have reached a valid position
 
                 if (realVisiblePixels <= lastVisiblePixels) {
                     if (titleFailed && realVisiblePixels < lastVisiblePixels)
                         break; // we won't become better
                     else {
                         if (!titleFailed)
                             setMoveResizeGeometry(lastTry);
                         titleFailed = true;
                     }
                 }
                 lastVisiblePixels = realVisiblePixels;
                 QRect moveResizeGeom = moveResizeGeometry();
                 lastTry = moveResizeGeom;
 
                 // Not visible enough, move the window to the closest valid point. We bruteforce
                 // this by slowly moving the window back to its previous position.
                 // The geometry changes at up to two edges, the one with the title (if) shall take
                 // precedence. The opposing edge has no impact on visiblePixels and only one of
                 // the adjacent can alter at a time, ie. it's enough to ignore adjacent edges
                 // if the title edge altered
                 bool leftChanged  = previousMoveResizeGeom.left()   != moveResizeGeom.left();
                 bool rightChanged = previousMoveResizeGeom.right()  != moveResizeGeom.right();
                 bool topChanged   = previousMoveResizeGeom.top()    != moveResizeGeom.top();
                 bool btmChanged   = previousMoveResizeGeom.bottom() != moveResizeGeom.bottom();
                 auto fixChangedState = [titleFailed](bool &major, bool &counter, bool &ad1, bool &ad2) {
                     counter = false;
                     if (titleFailed)
                         major = false;
                     if (major)
                         ad1 = ad2 = false;
                 };
                 switch (titlebarPosition()) {
                 default:
                 case PositionTop:
                     fixChangedState(topChanged, btmChanged, leftChanged, rightChanged);
                     break;
                 case PositionLeft:
                     fixChangedState(leftChanged, rightChanged, topChanged, btmChanged);
                     break;
                 case PositionBottom:
                     fixChangedState(btmChanged, topChanged, leftChanged, rightChanged);
                     break;
                 case PositionRight:
                     fixChangedState(rightChanged, leftChanged, topChanged, btmChanged);
                     break;
                 }
                 if (topChanged)
                     moveResizeGeom.setTop(moveResizeGeom.y() + sign(previousMoveResizeGeom.y() - moveResizeGeom.y()));
                 else if (leftChanged)
                     moveResizeGeom.setLeft(moveResizeGeom.x() + sign(previousMoveResizeGeom.x() - moveResizeGeom.x()));
                 else if (btmChanged)
                     moveResizeGeom.setBottom(moveResizeGeom.bottom() + sign(previousMoveResizeGeom.bottom() - moveResizeGeom.bottom()));
                 else if (rightChanged)
                     moveResizeGeom.setRight(moveResizeGeom.right() + sign(previousMoveResizeGeom.right() - moveResizeGeom.right()));
                 else
                     break; // no position changed - that's certainly not good
                 setMoveResizeGeometry(moveResizeGeom);
             }
         }
 
         // Always obey size hints, even when in "unrestricted" mode
         QSize size = constrainFrameSize(moveResizeGeometry().size(), sizeMode);
         // the new topleft and bottomright corners (after checking size constrains), if they'll be needed
         topleft = QPoint(moveResizeGeometry().right() - size.width() + 1, moveResizeGeometry().bottom() - size.height() + 1);
         bottomright = QPoint(moveResizeGeometry().left() + size.width() - 1, moveResizeGeometry().top() + size.height() - 1);
         orig = moveResizeGeometry();
 
         // if aspect ratios are specified, both dimensions may change.
         // Therefore grow to the right/bottom if needed.
         // TODO it should probably obey gravity rather than always using right/bottom ?
         if (sizeMode == SizeModeFixedH)
             orig.setRight(bottomright.x());
         else if (sizeMode == SizeModeFixedW)
             orig.setBottom(bottomright.y());
 
         calculateMoveResizeGeom();
 
         if (moveResizeGeometry().size() != previousMoveResizeGeom.size())
             update = true;
     } else if (isMove()) {
         Q_ASSERT(mode == PositionCenter);
         if (!isMovable()) { // isMovableAcrossScreens() must have been true to get here
             // Special moving of maximized windows on Xinerama screens
             int screen = screens()->number(globalPos);
             if (isFullScreen())
                 setMoveResizeGeometry(workspace()->clientArea(FullScreenArea, screen, 0));
             else {
                 QRect moveResizeGeom = workspace()->clientArea(MaximizeArea, screen, 0);
                 QSize adjSize = constrainFrameSize(moveResizeGeom.size(), SizeModeMax);
                 if (adjSize != moveResizeGeom.size()) {
                     QRect r(moveResizeGeom);
                     moveResizeGeom.setSize(adjSize);
                     moveResizeGeom.moveCenter(r.center());
                 }
                 setMoveResizeGeometry(moveResizeGeom);
             }
         } else {
             // first move, then snap, then check bounds
             QRect moveResizeGeom = moveResizeGeometry();
             moveResizeGeom.moveTopLeft(topleft);
             moveResizeGeom.moveTopLeft(workspace()->adjustClientPosition(this, moveResizeGeom.topLeft(),
                                        isUnrestrictedMoveResize()));
             setMoveResizeGeometry(moveResizeGeom);
 
             if (!isUnrestrictedMoveResize()) {
                 const QRegion strut = workspace()->restrictedMoveArea(desktop());   // Strut areas
                 QRegion availableArea(workspace()->clientArea(FullArea, -1, 0));   // On the screen
                 availableArea -= strut;   // Strut areas
                 bool transposed = false;
                 int requiredPixels;
                 QRect bTitleRect = titleBarRect(transposed, requiredPixels);
                 for (;;) {
                     QRect moveResizeGeom = moveResizeGeometry();
                     const QRect titleRect(bTitleRect.translated(moveResizeGeom.topLeft()));
                     int visiblePixels = 0;
                     for (const QRect &rect : availableArea) {
                         const QRect r = rect & titleRect;
                         if ((transposed && r.width() == titleRect.width()) || // Only the full size regions...
                             (!transposed && r.height() == titleRect.height())) // ...prevents long slim areas
                             visiblePixels += r.width() * r.height();
                     }
                     if (visiblePixels >= requiredPixels)
                         break; // We have reached a valid position
 
                     // (esp.) if there're more screens with different struts (panels) it the titlebar
                     // will be movable outside the movearea (covering one of the panels) until it
                     // crosses the panel "too much" (not enough visiblePixels) and then stucks because
                     // it's usually only pushed by 1px to either direction
                     // so we first check whether we intersect suc strut and move the window below it
                     // immediately (it's still possible to hit the visiblePixels >= titlebarArea break
                     // by moving the window slightly downwards, but it won't stuck)
                     // see bug #274466
                     // and bug #301805 for why we can't just match the titlearea against the screen
                     if (screens()->count() > 1) { // optimization
                         // TODO: could be useful on partial screen struts (half-width panels etc.)
                         int newTitleTop = -1;
                         for (const QRect &r : strut) {
                             if (r.top() == 0 && r.width() > r.height() && // "top panel"
                                 r.intersects(moveResizeGeom) && moveResizeGeom.top() < r.bottom()) {
                                 newTitleTop = r.bottom() + 1;
                                 break;
                             }
                         }
                         if (newTitleTop > -1) {
                             moveResizeGeom.moveTop(newTitleTop); // invalid position, possibly on screen change
                             setMoveResizeGeometry(moveResizeGeom);
                             break;
                         }
                     }
 
                     int dx = sign(previousMoveResizeGeom.x() - moveResizeGeom.x()),
                         dy = sign(previousMoveResizeGeom.y() - moveResizeGeom.y());
                     if (visiblePixels && dx) // means there's no full width cap -> favor horizontally
                         dy = 0;
                     else if (dy)
                         dx = 0;
 
                     // Move it back
                     moveResizeGeom.translate(dx, dy);
                     setMoveResizeGeometry(moveResizeGeom);
 
                     if (moveResizeGeom == previousMoveResizeGeom) {
                         break; // Prevent lockup
                     }
                 }
             }
         }
         if (moveResizeGeometry().topLeft() != previousMoveResizeGeom.topLeft())
             update = true;
     } else
         abort();
 
     if (!update)
         return;
 
     if (isResize() && !haveResizeEffect()) {
         doResizeSync();
     } else
         performMoveResize();
 
     if (isMove()) {
         ScreenEdges::self()->check(globalPos, QDateTime::fromMSecsSinceEpoch(xTime(), Qt::UTC));
     }
 }
 
 void AbstractClient::performMoveResize()
 {
     const QRect &moveResizeGeom = moveResizeGeometry();
     if (isMove() || (isResize() && !haveResizeEffect())) {
         setFrameGeometry(moveResizeGeom);
     }
     doPerformMoveResize();
     positionGeometryTip();
     emit clientStepUserMovedResized(this, moveResizeGeom);
 }
 
 bool AbstractClient::hasStrut() const
 {
     return false;
 }
 
 void AbstractClient::setupWindowManagementInterface()
 {
     if (m_windowManagementInterface) {
         // already setup
         return;
     }
     if (!waylandServer() || !surface()) {
         return;
     }
     if (!waylandServer()->windowManagement()) {
         return;
     }
     using namespace KWayland::Server;
     auto w = waylandServer()->windowManagement()->createWindow(waylandServer()->windowManagement());
     w->setTitle(caption());
     w->setVirtualDesktop(isOnAllDesktops() ? 0 : desktop() - 1);
     w->setActive(isActive());
     w->setFullscreen(isFullScreen());
     w->setKeepAbove(keepAbove());
     w->setKeepBelow(keepBelow());
     w->setMaximized(maximizeMode() == KWin::MaximizeFull);
     w->setMinimized(isMinimized());
     w->setOnAllDesktops(isOnAllDesktops());
     w->setDemandsAttention(isDemandingAttention());
     w->setCloseable(isCloseable());
     w->setMaximizeable(isMaximizable());
     w->setMinimizeable(isMinimizable());
     w->setFullscreenable(isFullScreenable());
     w->setIcon(icon());
     auto updateAppId = [this, w] {
         w->setAppId(QString::fromUtf8(m_desktopFileName.isEmpty() ? resourceClass() : m_desktopFileName));
     };
     updateAppId();
     w->setSkipTaskbar(skipTaskbar());
     w->setSkipSwitcher(skipSwitcher());
     w->setPid(pid());
     w->setShadeable(isShadeable());
     w->setShaded(isShade());
     w->setResizable(isResizable());
     w->setMovable(isMovable());
     w->setVirtualDesktopChangeable(true); // FIXME Matches X11Client::actionSupported(), but both should be implemented.
     w->setParentWindow(transientFor() ? transientFor()->windowManagementInterface() : nullptr);
     w->setGeometry(frameGeometry());
     connect(this, &AbstractClient::skipTaskbarChanged, w,
         [w, this] {
             w->setSkipTaskbar(skipTaskbar());
         }
     );
     connect(this, &AbstractClient::skipSwitcherChanged, w,
          [w, this] {
             w->setSkipSwitcher(skipSwitcher());
         }
     );
     connect(this, &AbstractClient::captionChanged, w, [w, this] { w->setTitle(caption()); });
 
     connect(this, &AbstractClient::activeChanged, w, [w, this] { w->setActive(isActive()); });
     connect(this, &AbstractClient::fullScreenChanged, w, [w, this] { w->setFullscreen(isFullScreen()); });
     connect(this, &AbstractClient::keepAboveChanged, w, &PlasmaWindowInterface::setKeepAbove);
     connect(this, &AbstractClient::keepBelowChanged, w, &PlasmaWindowInterface::setKeepBelow);
     connect(this, &AbstractClient::minimizedChanged, w, [w, this] { w->setMinimized(isMinimized()); });
     connect(this, static_cast<void (AbstractClient::*)(AbstractClient*,MaximizeMode)>(&AbstractClient::clientMaximizedStateChanged), w,
         [w] (KWin::AbstractClient *c, MaximizeMode mode) {
             Q_UNUSED(c);
             w->setMaximized(mode == KWin::MaximizeFull);
         }
     );
     connect(this, &AbstractClient::demandsAttentionChanged, w, [w, this] { w->setDemandsAttention(isDemandingAttention()); });
     connect(this, &AbstractClient::iconChanged, w,
         [w, this] {
             w->setIcon(icon());
         }
     );
     connect(this, &AbstractClient::windowClassChanged, w, updateAppId);
     connect(this, &AbstractClient::desktopFileNameChanged, w, updateAppId);
     connect(this, &AbstractClient::shadeChanged, w, [w, this] { w->setShaded(isShade()); });
     connect(this, &AbstractClient::transientChanged, w,
         [w, this] {
             w->setParentWindow(transientFor() ? transientFor()->windowManagementInterface() : nullptr);
         }
     );
     connect(this, &AbstractClient::frameGeometryChanged, w,
         [w, this] {
             w->setGeometry(frameGeometry());
         }
     );
     connect(w, &PlasmaWindowInterface::closeRequested, this, [this] { closeWindow(); });
     connect(w, &PlasmaWindowInterface::moveRequested, this,
         [this] {
             Cursor::setPos(frameGeometry().center());
             performMouseCommand(Options::MouseMove, Cursor::pos());
         }
     );
     connect(w, &PlasmaWindowInterface::resizeRequested, this,
         [this] {
             Cursor::setPos(frameGeometry().bottomRight());
             performMouseCommand(Options::MouseResize, Cursor::pos());
         }
     );
     connect(w, &PlasmaWindowInterface::virtualDesktopRequested, this,
         [this] (quint32 desktop) {
             workspace()->sendClientToDesktop(this, desktop + 1, true);
         }
     );
     connect(w, &PlasmaWindowInterface::fullscreenRequested, this,
         [this] (bool set) {
             setFullScreen(set, false);
         }
     );
     connect(w, &PlasmaWindowInterface::minimizedRequested, this,
         [this] (bool set) {
             if (set) {
                 minimize();
             } else {
                 unminimize();
             }
         }
     );
     connect(w, &PlasmaWindowInterface::maximizedRequested, this,
         [this] (bool set) {
             maximize(set ? MaximizeFull : MaximizeRestore);
         }
     );
     connect(w, &PlasmaWindowInterface::keepAboveRequested, this,
         [this] (bool set) {
             setKeepAbove(set);
         }
     );
     connect(w, &PlasmaWindowInterface::keepBelowRequested, this,
         [this] (bool set) {
             setKeepBelow(set);
         }
     );
     connect(w, &PlasmaWindowInterface::demandsAttentionRequested, this,
         [this] (bool set) {
             demandAttention(set);
         }
     );
     connect(w, &PlasmaWindowInterface::activeRequested, this,
         [this] (bool set) {
             if (set) {
                 workspace()->activateClient(this, true);
             }
         }
     );
     connect(w, &PlasmaWindowInterface::shadedRequested, this,
         [this] (bool set) {
             setShade(set);
         }
     );
 
     for (const auto vd : m_desktops) {
         w->addPlasmaVirtualDesktop(vd->id());
     }
 
     //this is only for the legacy
     connect(this, &AbstractClient::desktopChanged, w,
         [w, this] {
             if (isOnAllDesktops()) {
                 w->setOnAllDesktops(true);
                 return;
             }
             w->setVirtualDesktop(desktop() - 1);
             w->setOnAllDesktops(false);
         }
     );
 
     //Plasma Virtual desktop management
     //show/hide when the window enters/exits from desktop
     connect(w, &PlasmaWindowInterface::enterPlasmaVirtualDesktopRequested, this,
         [this] (const QString &desktopId) {
             VirtualDesktop *vd = VirtualDesktopManager::self()->desktopForId(desktopId.toUtf8());
             if (vd) {
                 enterDesktop(vd);
             }
         }
     );
     connect(w, &PlasmaWindowInterface::enterNewPlasmaVirtualDesktopRequested, this,
         [this] () {
             VirtualDesktopManager::self()->setCount(VirtualDesktopManager::self()->count() + 1);
             enterDesktop(VirtualDesktopManager::self()->desktops().last());
         }
     );
     connect(w, &PlasmaWindowInterface::leavePlasmaVirtualDesktopRequested, this,
         [this] (const QString &desktopId) {
             VirtualDesktop *vd = VirtualDesktopManager::self()->desktopForId(desktopId.toUtf8());
             if (vd) {
                 leaveDesktop(vd);
             }
         }
     );
 
     m_windowManagementInterface = w;
 }
 
 void AbstractClient::destroyWindowManagementInterface()
 {
     if (m_windowManagementInterface) {
         m_windowManagementInterface->unmap();
         m_windowManagementInterface = nullptr;
     }
 }
 
 Options::MouseCommand AbstractClient::getMouseCommand(Qt::MouseButton button, bool *handled) const
 {
     *handled = false;
     if (button == Qt::NoButton) {
         return Options::MouseNothing;
     }
     if (isActive()) {
         if (options->isClickRaise()) {
             *handled = true;
             return Options::MouseActivateRaiseAndPassClick;
         }
     } else {
         *handled = true;
         switch (button) {
         case Qt::LeftButton:
             return options->commandWindow1();
         case Qt::MiddleButton:
             return options->commandWindow2();
         case Qt::RightButton:
             return options->commandWindow3();
         default:
             // all other buttons pass Activate & Pass Client
             return Options::MouseActivateAndPassClick;
         }
     }
     return Options::MouseNothing;
 }
 
 Options::MouseCommand AbstractClient::getWheelCommand(Qt::Orientation orientation, bool *handled) const
 {
     *handled = false;
     if (orientation != Qt::Vertical) {
         return Options::MouseNothing;
     }
     if (!isActive()) {
         *handled = true;
         return options->commandWindowWheel();
     }
     return Options::MouseNothing;
 }
 
 bool AbstractClient::performMouseCommand(Options::MouseCommand cmd, const QPoint &globalPos)
 {
     bool replay = false;
     switch(cmd) {
     case Options::MouseRaise:
         workspace()->raiseClient(this);
         break;
     case Options::MouseLower: {
         workspace()->lowerClient(this);
         // used to be activateNextClient(this), then topClientOnDesktop
         // since this is a mouseOp it's however safe to use the client under the mouse instead
         if (isActive() && options->focusPolicyIsReasonable()) {
             AbstractClient *next = workspace()->clientUnderMouse(screen());
             if (next && next != this)
                 workspace()->requestFocus(next, false);
         }
         break;
     }
     case Options::MouseOperationsMenu:
         if (isActive() && options->isClickRaise())
             autoRaise();
         workspace()->showWindowMenu(QRect(globalPos, globalPos), this);
         break;
     case Options::MouseToggleRaiseAndLower:
         workspace()->raiseOrLowerClient(this);
         break;
     case Options::MouseActivateAndRaise: {
         replay = isActive(); // for clickraise mode
         bool mustReplay = !rules()->checkAcceptFocus(acceptsFocus());
         if (mustReplay) {
             auto it = workspace()->stackingOrder().constEnd(),
                                      begin = workspace()->stackingOrder().constBegin();
             while (mustReplay && --it != begin && *it != this) {
                 AbstractClient *c = qobject_cast<AbstractClient*>(*it);
                 if (!c || (c->keepAbove() && !keepAbove()) || (keepBelow() && !c->keepBelow()))
                     continue; // can never raise above "it"
                 mustReplay = !(c->isOnCurrentDesktop() && c->isOnCurrentActivity() && c->frameGeometry().intersects(frameGeometry()));
             }
         }
         workspace()->takeActivity(this, Workspace::ActivityFocus | Workspace::ActivityRaise);
         screens()->setCurrent(globalPos);
         replay = replay || mustReplay;
         break;
     }
     case Options::MouseActivateAndLower:
         workspace()->requestFocus(this);
         workspace()->lowerClient(this);
         screens()->setCurrent(globalPos);
         replay = replay || !rules()->checkAcceptFocus(acceptsFocus());
         break;
     case Options::MouseActivate:
         replay = isActive(); // for clickraise mode
         workspace()->takeActivity(this, Workspace::ActivityFocus);
         screens()->setCurrent(globalPos);
         replay = replay || !rules()->checkAcceptFocus(acceptsFocus());
         break;
     case Options::MouseActivateRaiseAndPassClick:
         workspace()->takeActivity(this, Workspace::ActivityFocus | Workspace::ActivityRaise);
         screens()->setCurrent(globalPos);
         replay = true;
         break;
     case Options::MouseActivateAndPassClick:
         workspace()->takeActivity(this, Workspace::ActivityFocus);
         screens()->setCurrent(globalPos);
         replay = true;
         break;
     case Options::MouseMaximize:
         maximize(MaximizeFull);
         break;
     case Options::MouseRestore:
         maximize(MaximizeRestore);
         break;
     case Options::MouseMinimize:
         minimize();
         break;
     case Options::MouseAbove: {
         StackingUpdatesBlocker blocker(workspace());
         if (keepBelow())
             setKeepBelow(false);
         else
             setKeepAbove(true);
         break;
     }
     case Options::MouseBelow: {
         StackingUpdatesBlocker blocker(workspace());
         if (keepAbove())
             setKeepAbove(false);
         else
             setKeepBelow(true);
         break;
     }
     case Options::MousePreviousDesktop:
         workspace()->windowToPreviousDesktop(this);
         break;
     case Options::MouseNextDesktop:
         workspace()->windowToNextDesktop(this);
         break;
     case Options::MouseOpacityMore:
         if (!isDesktop())   // No point in changing the opacity of the desktop
             setOpacity(qMin(opacity() + 0.1, 1.0));
         break;
     case Options::MouseOpacityLess:
         if (!isDesktop())   // No point in changing the opacity of the desktop
             setOpacity(qMax(opacity() - 0.1, 0.1));
         break;
     case Options::MouseClose:
         closeWindow();
         break;
     case Options::MouseActivateRaiseAndMove:
     case Options::MouseActivateRaiseAndUnrestrictedMove:
         workspace()->raiseClient(this);
         workspace()->requestFocus(this);
         screens()->setCurrent(globalPos);
         // fallthrough
     case Options::MouseMove:
     case Options::MouseUnrestrictedMove: {
         if (!isMovableAcrossScreens())
             break;
         if (isMoveResize())
             finishMoveResize(false);
         setMoveResizePointerMode(PositionCenter);
         setMoveResizePointerButtonDown(true);
         setMoveOffset(QPoint(globalPos.x() - x(), globalPos.y() - y()));  // map from global
         setInvertedMoveOffset(rect().bottomRight() - moveOffset());
         setUnrestrictedMoveResize((cmd == Options::MouseActivateRaiseAndUnrestrictedMove
                                   || cmd == Options::MouseUnrestrictedMove));
         if (!startMoveResize())
             setMoveResizePointerButtonDown(false);
         updateCursor();
         break;
     }
     case Options::MouseResize:
     case Options::MouseUnrestrictedResize: {
         if (!isResizable() || isShade())
             break;
         if (isMoveResize())
             finishMoveResize(false);
         setMoveResizePointerButtonDown(true);
         const QPoint moveOffset = QPoint(globalPos.x() - x(), globalPos.y() - y());  // map from global
         setMoveOffset(moveOffset);
         int x = moveOffset.x(), y = moveOffset.y();
         bool left = x < width() / 3;
         bool right = x >= 2 * width() / 3;
         bool top = y < height() / 3;
         bool bot = y >= 2 * height() / 3;
         Position mode;
         if (top)
             mode = left ? PositionTopLeft : (right ? PositionTopRight : PositionTop);
         else if (bot)
             mode = left ? PositionBottomLeft : (right ? PositionBottomRight : PositionBottom);
         else
             mode = (x < width() / 2) ? PositionLeft : PositionRight;
         setMoveResizePointerMode(mode);
         setInvertedMoveOffset(rect().bottomRight() - moveOffset);
         setUnrestrictedMoveResize((cmd == Options::MouseUnrestrictedResize));
         if (!startMoveResize())
             setMoveResizePointerButtonDown(false);
         updateCursor();
         break;
     }
     case Options::MouseNothing:
     default:
         replay = true;
         break;
     }
     return replay;
 }
 
 void AbstractClient::setTransientFor(AbstractClient *transientFor)
 {
     if (transientFor == this) {
         // cannot be transient for one self
         return;
     }
     if (m_transientFor == transientFor) {
         return;
     }
     m_transientFor = transientFor;
     emit transientChanged();
 }
 
 const AbstractClient *AbstractClient::transientFor() const
 {
     return m_transientFor;
 }
 
 AbstractClient *AbstractClient::transientFor()
 {
     return m_transientFor;
 }
 
 bool AbstractClient::hasTransientPlacementHint() const
 {
     return false;
 }
 
 QRect AbstractClient::transientPlacement(const QRect &bounds) const
 {
     Q_UNUSED(bounds);
     Q_UNREACHABLE();
     return QRect();
 }
 
 bool AbstractClient::hasTransient(const AbstractClient *c, bool indirect) const
 {
     Q_UNUSED(indirect);
     return c->transientFor() == this;
 }
 
 QList< AbstractClient* > AbstractClient::mainClients() const
 {
     if (const AbstractClient *t = transientFor()) {
         return QList<AbstractClient*>{const_cast< AbstractClient* >(t)};
     }
     return QList<AbstractClient*>();
 }
 
 QList<AbstractClient*> AbstractClient::allMainClients() const
 {
     auto result = mainClients();
     foreach (const auto *cl, result) {
         result += cl->allMainClients();
     }
     return result;
 }
 
 void AbstractClient::setModal(bool m)
 {
     // Qt-3.2 can have even modal normal windows :(
     if (m_modal == m)
         return;
     m_modal = m;
     emit modalChanged();
     // Changing modality for a mapped window is weird (?)
     // _NET_WM_STATE_MODAL should possibly rather be _NET_WM_WINDOW_TYPE_MODAL_DIALOG
 }
 
 bool AbstractClient::isModal() const
 {
     return m_modal;
 }
 
 void AbstractClient::addTransient(AbstractClient *cl)
 {
     Q_ASSERT(!m_transients.contains(cl));
     Q_ASSERT(cl != this);
     m_transients.append(cl);
 }
 
 void AbstractClient::removeTransient(AbstractClient *cl)
 {
     m_transients.removeAll(cl);
     if (cl->transientFor() == this) {
         cl->setTransientFor(nullptr);
     }
 }
 
 void AbstractClient::removeTransientFromList(AbstractClient *cl)
 {
     m_transients.removeAll(cl);
 }
 
 bool AbstractClient::isActiveFullScreen() const
 {
     if (!isFullScreen())
         return false;
 
     const auto ac = workspace()->mostRecentlyActivatedClient(); // instead of activeClient() - avoids flicker
     // according to NETWM spec implementation notes suggests
     // "focused windows having state _NET_WM_STATE_FULLSCREEN" to be on the highest layer.
     // we'll also take the screen into account
     return ac && (ac == this || ac->screen() != screen()|| ac->allMainClients().contains(const_cast<AbstractClient*>(this)));
 }
 
 #define BORDER(which) \
     int AbstractClient::border##which() const \
     { \
         return isDecorated() ? decoration()->border##which() : 0; \
     }
 
 BORDER(Bottom)
 BORDER(Left)
 BORDER(Right)
 BORDER(Top)
 #undef BORDER
 
 void AbstractClient::addRepaintDuringGeometryUpdates()
 {
     const QRect deco_rect = visibleRect();
     addLayerRepaint(m_visibleRectBeforeGeometryUpdate);
     addLayerRepaint(deco_rect);   // trigger repaint of window's new location
     m_visibleRectBeforeGeometryUpdate = deco_rect;
 }
 
 QRect AbstractClient::bufferGeometryBeforeUpdateBlocking() const
 {
     return m_bufferGeometryBeforeUpdateBlocking;
 }
 
 QRect AbstractClient::frameGeometryBeforeUpdateBlocking() const
 {
     return m_frameGeometryBeforeUpdateBlocking;
 }
 
 void AbstractClient::updateGeometryBeforeUpdateBlocking()
 {
     m_bufferGeometryBeforeUpdateBlocking = bufferGeometry();
     m_frameGeometryBeforeUpdateBlocking = frameGeometry();
 }
 
 void AbstractClient::doMove(int, int)
 {
 }
 
 void AbstractClient::updateInitialMoveResizeGeometry()
 {
     m_moveResize.initialGeometry = frameGeometry();
     m_moveResize.geometry = m_moveResize.initialGeometry;
     m_moveResize.startScreen = screen();
 }
 
 void AbstractClient::updateCursor()
 {
     Position m = moveResizePointerMode();
     if (!isResizable() || isShade())
         m = PositionCenter;
     CursorShape c = Qt::ArrowCursor;
     switch(m) {
     case PositionTopLeft:
         c = KWin::ExtendedCursor::SizeNorthWest;
         break;
     case PositionBottomRight:
         c = KWin::ExtendedCursor::SizeSouthEast;
         break;
     case PositionBottomLeft:
         c = KWin::ExtendedCursor::SizeSouthWest;
         break;
     case PositionTopRight:
         c = KWin::ExtendedCursor::SizeNorthEast;
         break;
     case PositionTop:
         c = KWin::ExtendedCursor::SizeNorth;
         break;
     case PositionBottom:
         c = KWin::ExtendedCursor::SizeSouth;
         break;
     case PositionLeft:
         c = KWin::ExtendedCursor::SizeWest;
         break;
     case PositionRight:
         c = KWin::ExtendedCursor::SizeEast;
         break;
     default:
         if (isMoveResize())
             c = Qt::SizeAllCursor;
         else
             c = Qt::ArrowCursor;
         break;
     }
     if (c == m_moveResize.cursor)
         return;
     m_moveResize.cursor = c;
     emit moveResizeCursorChanged(c);
 }
 
 void AbstractClient::leaveMoveResize()
 {
     workspace()->setMoveResizeClient(nullptr);
     setMoveResize(false);
     if (ScreenEdges::self()->isDesktopSwitchingMovingClients())
         ScreenEdges::self()->reserveDesktopSwitching(false, Qt::Vertical|Qt::Horizontal);
     if (isElectricBorderMaximizing()) {
         outline()->hide();
         elevate(false);
     }
 }
 
 bool AbstractClient::s_haveResizeEffect = false;
 
 void AbstractClient::updateHaveResizeEffect()
 {
     s_haveResizeEffect = effects && static_cast<EffectsHandlerImpl*>(effects)->provides(Effect::Resize);
 }
 
 bool AbstractClient::doStartMoveResize()
 {
     return true;
 }
 
 void AbstractClient::positionGeometryTip()
 {
 }
 
 void AbstractClient::doPerformMoveResize()
 {
 }
 
 bool AbstractClient::isWaitingForMoveResizeSync() const
 {
     return false;
 }
 
 void AbstractClient::doResizeSync()
 {
 }
 
 void AbstractClient::checkQuickTilingMaximizationZones(int xroot, int yroot)
 {
     QuickTileMode mode = QuickTileFlag::None;
     bool innerBorder = false;
     for (int i=0; i < screens()->count(); ++i) {
 
         if (!screens()->geometry(i).contains(QPoint(xroot, yroot)))
             continue;
 
         auto isInScreen = [i](const QPoint &pt) {
             for (int j = 0; j < screens()->count(); ++j) {
                 if (j == i)
                     continue;
                 if (screens()->geometry(j).contains(pt)) {
                     return true;
                 }
             }
             return false;
         };
 
         QRect area = workspace()->clientArea(MaximizeArea, QPoint(xroot, yroot), desktop());
         if (options->electricBorderTiling()) {
             if (xroot <= area.x() + 20) {
                 mode |= QuickTileFlag::Left;
                 innerBorder = isInScreen(QPoint(area.x() - 1, yroot));
             } else if (xroot >= area.x() + area.width() - 20) {
                 mode |= QuickTileFlag::Right;
                 innerBorder = isInScreen(QPoint(area.right() + 1, yroot));
             }
         }
 
         if (mode != QuickTileMode(QuickTileFlag::None)) {
             if (yroot <= area.y() + area.height() * options->electricBorderCornerRatio())
                 mode |= QuickTileFlag::Top;
             else if (yroot >= area.y() + area.height() - area.height()  * options->electricBorderCornerRatio())
                 mode |= QuickTileFlag::Bottom;
         } else if (options->electricBorderMaximize() && yroot <= area.y() + 5 && isMaximizable()) {
             mode = QuickTileFlag::Maximize;
             innerBorder = isInScreen(QPoint(xroot, area.y() - 1));
         }
         break; // no point in checking other screens to contain this... "point"...
     }
     if (mode != electricBorderMode()) {
         setElectricBorderMode(mode);
         if (innerBorder) {
             if (!m_electricMaximizingDelay) {
                 m_electricMaximizingDelay = new QTimer(this);
                 m_electricMaximizingDelay->setInterval(250);
                 m_electricMaximizingDelay->setSingleShot(true);
                 connect(m_electricMaximizingDelay, &QTimer::timeout, [this]() {
                     if (isMove())
                         setElectricBorderMaximizing(electricBorderMode() != QuickTileMode(QuickTileFlag::None));
                 });
             }
             m_electricMaximizingDelay->start();
         } else {
             setElectricBorderMaximizing(mode != QuickTileMode(QuickTileFlag::None));
         }
     }
 }
 
 void AbstractClient::keyPressEvent(uint key_code)
 {
     if (!isMove() && !isResize())
         return;
     bool is_control = key_code & Qt::CTRL;
     bool is_alt = key_code & Qt::ALT;
     key_code = key_code & ~Qt::KeyboardModifierMask;
     int delta = is_control ? 1 : is_alt ? 32 : 8;
     QPoint pos = Cursor::pos();
     switch(key_code) {
     case Qt::Key_Left:
         pos.rx() -= delta;
         break;
     case Qt::Key_Right:
         pos.rx() += delta;
         break;
     case Qt::Key_Up:
         pos.ry() -= delta;
         break;
     case Qt::Key_Down:
         pos.ry() += delta;
         break;
     case Qt::Key_Space:
     case Qt::Key_Return:
     case Qt::Key_Enter:
         setMoveResizePointerButtonDown(false);
         finishMoveResize(false);
         updateCursor();
         break;
     case Qt::Key_Escape:
         setMoveResizePointerButtonDown(false);
         finishMoveResize(true);
         updateCursor();
         break;
     default:
         return;
     }
     Cursor::setPos(pos);
 }
 
 QSize AbstractClient::resizeIncrements() const
 {
     return QSize(1, 1);
 }
 
 void AbstractClient::dontMoveResize()
 {
     setMoveResizePointerButtonDown(false);
     stopDelayedMoveResize();
     if (isMoveResize())
         finishMoveResize(false);
 }
 
 AbstractClient::Position AbstractClient::mousePosition() const
 {
     if (isDecorated()) {
         switch (decoration()->sectionUnderMouse()) {
             case Qt::BottomLeftSection:
                 return PositionBottomLeft;
             case Qt::BottomRightSection:
                 return PositionBottomRight;
             case Qt::BottomSection:
                 return PositionBottom;
             case Qt::LeftSection:
                 return PositionLeft;
             case Qt::RightSection:
                 return PositionRight;
             case Qt::TopSection:
                 return PositionTop;
             case Qt::TopLeftSection:
                 return PositionTopLeft;
             case Qt::TopRightSection:
                 return PositionTopRight;
             default:
                 return PositionCenter;
         }
     }
     return PositionCenter;
 }
 
 void AbstractClient::endMoveResize()
 {
     setMoveResizePointerButtonDown(false);
     stopDelayedMoveResize();
     if (isMoveResize()) {
         finishMoveResize(false);
         setMoveResizePointerMode(mousePosition());
     }
     updateCursor();
 }
 
+void AbstractClient::createDecoration(const QRect &oldGeometry)
+{
+    KDecoration2::Decoration *decoration = Decoration::DecorationBridge::self()->createDecoration(this);
+    if (decoration) {
+        QMetaObject::invokeMethod(decoration, "update", Qt::QueuedConnection);
+        connect(decoration, &KDecoration2::Decoration::shadowChanged, this, &Toplevel::updateShadow);
+        connect(decoration, &KDecoration2::Decoration::bordersChanged, this, [this]() {
+            GeometryUpdatesBlocker blocker(this);
+            const QRect oldGeometry = frameGeometry();
+            if (!isShade()) {
+                checkWorkspacePosition(oldGeometry);
+            }
+            emit geometryShapeChanged(this, oldGeometry);
+        });
+    }
+    setDecoration(decoration);
+    setFrameGeometry(QRect(oldGeometry.topLeft(), clientSizeToFrameSize(clientSize())));
+
+    emit geometryShapeChanged(this, oldGeometry);
+}
+
 void AbstractClient::destroyDecoration()
 {
     delete m_decoration.decoration;
     m_decoration.decoration = nullptr;
 }
 
 bool AbstractClient::decorationHasAlpha() const
 {
     if (!isDecorated() || decoration()->isOpaque()) {
         // either no decoration or decoration has alpha disabled
         return false;
     }
     return true;
 }
 
 void AbstractClient::triggerDecorationRepaint()
 {
     if (isDecorated()) {
         decoration()->update();
     }
 }
 
 void AbstractClient::layoutDecorationRects(QRect &left, QRect &top, QRect &right, QRect &bottom) const
 {
     if (!isDecorated()) {
         return;
     }
     QRect r = decoration()->rect();
 
     top = QRect(r.x(), r.y(), r.width(), borderTop());
     bottom = QRect(r.x(), r.y() + r.height() - borderBottom(),
                    r.width(), borderBottom());
     left = QRect(r.x(), r.y() + top.height(),
                  borderLeft(), r.height() - top.height() - bottom.height());
     right = QRect(r.x() + r.width() - borderRight(), r.y() + top.height(),
                   borderRight(), r.height() - top.height() - bottom.height());
 }
 
 void AbstractClient::processDecorationMove(const QPoint &localPos, const QPoint &globalPos)
 {
     if (isMoveResizePointerButtonDown()) {
         handleMoveResize(localPos.x(), localPos.y(), globalPos.x(), globalPos.y());
         return;
     }
     // TODO: handle modifiers
     Position newmode = mousePosition();
     if (newmode != moveResizePointerMode()) {
         setMoveResizePointerMode(newmode);
         updateCursor();
     }
 }
 
 bool AbstractClient::processDecorationButtonPress(QMouseEvent *event, bool ignoreMenu)
 {
     Options::MouseCommand com = Options::MouseNothing;
     bool active = isActive();
     if (!wantsInput())    // we cannot be active, use it anyway
         active = true;
 
     // check whether it is a double click
     if (event->button() == Qt::LeftButton && titlebarPositionUnderMouse()) {
         if (m_decoration.doubleClickTimer.isValid()) {
             const qint64 interval = m_decoration.doubleClickTimer.elapsed();
             m_decoration.doubleClickTimer.invalidate();
             if (interval > QGuiApplication::styleHints()->mouseDoubleClickInterval()) {
                 m_decoration.doubleClickTimer.start(); // expired -> new first click and pot. init
             } else {
                 Workspace::self()->performWindowOperation(this, options->operationTitlebarDblClick());
                 dontMoveResize();
                 return false;
             }
         }
          else {
             m_decoration.doubleClickTimer.start(); // new first click and pot. init, could be invalidated by release - see below
         }
     }
 
     if (event->button() == Qt::LeftButton)
         com = active ? options->commandActiveTitlebar1() : options->commandInactiveTitlebar1();
     else if (event->button() == Qt::MidButton)
         com = active ? options->commandActiveTitlebar2() : options->commandInactiveTitlebar2();
     else if (event->button() == Qt::RightButton)
         com = active ? options->commandActiveTitlebar3() : options->commandInactiveTitlebar3();
     if (event->button() == Qt::LeftButton
             && com != Options::MouseOperationsMenu // actions where it's not possible to get the matching
             && com != Options::MouseMinimize)  // mouse release event
     {
         setMoveResizePointerMode(mousePosition());
         setMoveResizePointerButtonDown(true);
         setMoveOffset(event->pos());
         setInvertedMoveOffset(rect().bottomRight() - moveOffset());
         setUnrestrictedMoveResize(false);
         startDelayedMoveResize();
         updateCursor();
     }
     // In the new API the decoration may process the menu action to display an inactive tab's menu.
     // If the event is unhandled then the core will create one for the active window in the group.
     if (!ignoreMenu || com != Options::MouseOperationsMenu)
         performMouseCommand(com, event->globalPos());
     return !( // Return events that should be passed to the decoration in the new API
                com == Options::MouseRaise ||
                com == Options::MouseOperationsMenu ||
                com == Options::MouseActivateAndRaise ||
                com == Options::MouseActivate ||
                com == Options::MouseActivateRaiseAndPassClick ||
                com == Options::MouseActivateAndPassClick ||
                com == Options::MouseNothing);
 }
 
 void AbstractClient::processDecorationButtonRelease(QMouseEvent *event)
 {
     if (isDecorated()) {
         if (event->isAccepted() || !titlebarPositionUnderMouse()) {
             invalidateDecorationDoubleClickTimer(); // click was for the deco and shall not init a doubleclick
         }
     }
 
     if (event->buttons() == Qt::NoButton) {
         setMoveResizePointerButtonDown(false);
         stopDelayedMoveResize();
         if (isMoveResize()) {
             finishMoveResize(false);
             setMoveResizePointerMode(mousePosition());
         }
         updateCursor();
     }
 }
 
 
 void AbstractClient::startDecorationDoubleClickTimer()
 {
     m_decoration.doubleClickTimer.start();
 }
 
 void AbstractClient::invalidateDecorationDoubleClickTimer()
 {
     m_decoration.doubleClickTimer.invalidate();
 }
 
 bool AbstractClient::providesContextHelp() const
 {
     return false;
 }
 
 void AbstractClient::showContextHelp()
 {
 }
 
 QPointer<Decoration::DecoratedClientImpl> AbstractClient::decoratedClient() const
 {
     return m_decoration.client;
 }
 
 void AbstractClient::setDecoratedClient(QPointer< Decoration::DecoratedClientImpl > client)
 {
     m_decoration.client = client;
 }
 
 void AbstractClient::enterEvent(const QPoint &globalPos)
 {
     // TODO: shade hover
     if (options->focusPolicy() == Options::ClickToFocus || workspace()->userActionsMenu()->isShown())
         return;
 
     if (options->isAutoRaise() && !isDesktop() &&
             !isDock() && workspace()->focusChangeEnabled() &&
             globalPos != workspace()->focusMousePosition() &&
             workspace()->topClientOnDesktop(VirtualDesktopManager::self()->current(),
                                             options->isSeparateScreenFocus() ? screen() : -1) != this) {
         startAutoRaise();
     }
 
     if (isDesktop() || isDock())
         return;
     // for FocusFollowsMouse, change focus only if the mouse has actually been moved, not if the focus
     // change came because of window changes (e.g. closing a window) - #92290
     if (options->focusPolicy() != Options::FocusFollowsMouse
             || globalPos != workspace()->focusMousePosition()) {
         workspace()->requestDelayFocus(this);
     }
 }
 
 void AbstractClient::leaveEvent()
 {
     cancelAutoRaise();
     workspace()->cancelDelayFocus();
     // TODO: shade hover
     // TODO: send hover leave to deco
     // TODO: handle Options::FocusStrictlyUnderMouse
 }
 
 QRect AbstractClient::iconGeometry() const
 {
     if (!windowManagementInterface() || !waylandServer()) {
         // window management interface is only available if the surface is mapped
         return QRect();
     }
 
     int minDistance = INT_MAX;
     AbstractClient *candidatePanel = nullptr;
     QRect candidateGeom;
 
     for (auto i = windowManagementInterface()->minimizedGeometries().constBegin(), end = windowManagementInterface()->minimizedGeometries().constEnd(); i != end; ++i) {
         AbstractClient *client = waylandServer()->findClient(i.key());
         if (!client) {
             continue;
         }
         const int distance = QPoint(client->pos() - pos()).manhattanLength();
         if (distance < minDistance) {
             minDistance = distance;
             candidatePanel = client;
             candidateGeom = i.value();
         }
     }
     if (!candidatePanel) {
         return QRect();
     }
     return candidateGeom.translated(candidatePanel->pos());
 }
 
 QRect AbstractClient::inputGeometry() const
 {
     if (isDecorated()) {
         return Toplevel::inputGeometry() + decoration()->resizeOnlyBorders();
     }
     return Toplevel::inputGeometry();
 }
 
 QRect AbstractClient::virtualKeyboardGeometry() const
 {
     return m_virtualKeyboardGeometry;
 }
 
 void AbstractClient::setVirtualKeyboardGeometry(const QRect &geo)
 {
     // No keyboard anymore
     if (geo.isEmpty() && !m_keyboardGeometryRestore.isEmpty()) {
         setFrameGeometry(m_keyboardGeometryRestore);
         m_keyboardGeometryRestore = QRect();
     } else if (geo.isEmpty()) {
         return;
     // The keyboard has just been opened (rather than resized) save client geometry for a restore
     } else if (m_keyboardGeometryRestore.isEmpty()) {
         m_keyboardGeometryRestore = frameGeometry();
     }
 
     m_virtualKeyboardGeometry = geo;
 
     // Don't resize Desktop and fullscreen windows
     if (isFullScreen() || isDesktop()) {
         return;
     }
 
     if (!geo.intersects(m_keyboardGeometryRestore)) {
         return;
     }
 
     const QRect availableArea = workspace()->clientArea(MaximizeArea, this);
     QRect newWindowGeometry = m_keyboardGeometryRestore;
     newWindowGeometry.moveBottom(geo.top());
     newWindowGeometry.setTop(qMax(newWindowGeometry.top(), availableArea.top()));
 
     setFrameGeometry(newWindowGeometry);
 }
 
 bool AbstractClient::dockWantsInput() const
 {
     return false;
 }
 
 void AbstractClient::setDesktopFileName(QByteArray name)
 {
     name = rules()->checkDesktopFile(name).toUtf8();
     if (name == m_desktopFileName) {
         return;
     }
     m_desktopFileName = name;
     updateWindowRules(Rules::DesktopFile);
     emit desktopFileNameChanged();
 }
 
 QString AbstractClient::iconFromDesktopFile() const
 {
     if (m_desktopFileName.isEmpty()) {
         return QString();
     }
     QString desktopFile = QString::fromUtf8(m_desktopFileName);
     if (!desktopFile.endsWith(QLatin1String(".desktop"))) {
         desktopFile.append(QLatin1String(".desktop"));
     }
     KDesktopFile df(desktopFile);
     return df.readIcon();
 }
 
 bool AbstractClient::hasApplicationMenu() const
 {
     return ApplicationMenu::self()->applicationMenuEnabled() && !m_applicationMenuServiceName.isEmpty() && !m_applicationMenuObjectPath.isEmpty();
 }
 
 void AbstractClient::updateApplicationMenuServiceName(const QString &serviceName)
 {
     const bool old_hasApplicationMenu = hasApplicationMenu();
 
     m_applicationMenuServiceName = serviceName;
 
     const bool new_hasApplicationMenu = hasApplicationMenu();
 
     if (old_hasApplicationMenu != new_hasApplicationMenu) {
         emit hasApplicationMenuChanged(new_hasApplicationMenu);
     }
 }
 
 void AbstractClient::updateApplicationMenuObjectPath(const QString &objectPath)
 {
     const bool old_hasApplicationMenu = hasApplicationMenu();
 
     m_applicationMenuObjectPath = objectPath;
 
     const bool new_hasApplicationMenu = hasApplicationMenu();
 
     if (old_hasApplicationMenu != new_hasApplicationMenu) {
         emit hasApplicationMenuChanged(new_hasApplicationMenu);
     }
 }
 
 void AbstractClient::setApplicationMenuActive(bool applicationMenuActive)
 {
     if (m_applicationMenuActive != applicationMenuActive) {
         m_applicationMenuActive = applicationMenuActive;
         emit applicationMenuActiveChanged(applicationMenuActive);
     }
 }
 
 void AbstractClient::showApplicationMenu(int actionId)
 {
     if (isDecorated()) {
         decoration()->showApplicationMenu(actionId);
     } else {
         // we don't know where the application menu button will be, show it in the top left corner instead
         Workspace::self()->showApplicationMenu(QRect(), this, actionId);
     }
 }
 
 bool AbstractClient::unresponsive() const
 {
     return m_unresponsive;
 }
 
 void AbstractClient::setUnresponsive(bool unresponsive)
 {
     if (m_unresponsive != unresponsive) {
         m_unresponsive = unresponsive;
         emit unresponsiveChanged(m_unresponsive);
         emit captionChanged();
     }
 }
 
 QString AbstractClient::shortcutCaptionSuffix() const
 {
     if (shortcut().isEmpty()) {
         return QString();
     }
     return QLatin1String(" {") + shortcut().toString() + QLatin1Char('}');
 }
 
 AbstractClient *AbstractClient::findClientWithSameCaption() const
 {
     auto fetchNameInternalPredicate = [this](const AbstractClient *cl) {
         return (!cl->isSpecialWindow() || cl->isToolbar()) && cl != this && cl->captionNormal() == captionNormal() && cl->captionSuffix() == captionSuffix();
     };
     return workspace()->findAbstractClient(fetchNameInternalPredicate);
 }
 
 QString AbstractClient::caption() const
 {
     QString cap = captionNormal() + captionSuffix();
     if (unresponsive()) {
         cap += QLatin1String(" ");
         cap += i18nc("Application is not responding, appended to window title", "(Not Responding)");
     }
     return cap;
 }
 
 void AbstractClient::removeRule(Rules* rule)
 {
     m_rules.remove(rule);
 }
 
 void AbstractClient::discardTemporaryRules()
 {
     m_rules.discardTemporary();
 }
 
 void AbstractClient::evaluateWindowRules()
 {
     setupWindowRules(true);
     applyWindowRules();
 }
 
 void AbstractClient::setOnActivities(QStringList newActivitiesList)
 {
     Q_UNUSED(newActivitiesList)
 }
 
 void AbstractClient::checkNoBorder()
 {
     setNoBorder(false);
 }
 
 bool AbstractClient::groupTransient() const
 {
     return false;
 }
 
 const Group *AbstractClient::group() const
 {
     return nullptr;
 }
 
 Group *AbstractClient::group()
 {
     return nullptr;
 }
 
 bool AbstractClient::isInternal() const
 {
     return false;
 }
 
 bool AbstractClient::supportsWindowRules() const
 {
     return true;
 }
 
 QMargins AbstractClient::frameMargins() const
 {
     return QMargins(borderLeft(), borderTop(), borderRight(), borderBottom());
 }
 
 QPoint AbstractClient::framePosToClientPos(const QPoint &point) const
 {
     return point + QPoint(borderLeft(), borderTop());
 }
 
 QPoint AbstractClient::clientPosToFramePos(const QPoint &point) const
 {
     return point - QPoint(borderLeft(), borderTop());
 }
 
 QSize AbstractClient::frameSizeToClientSize(const QSize &size) const
 {
     const int width = size.width() - borderLeft() - borderRight();
     const int height = size.height() - borderTop() - borderBottom();
     return QSize(width, height);
 }
 
 QSize AbstractClient::clientSizeToFrameSize(const QSize &size) const
 {
     const int width = size.width() + borderLeft() + borderRight();
     const int height = size.height() + borderTop() + borderBottom();
     return QSize(width, height);
 }
 
 QRect AbstractClient::frameRectToClientRect(const QRect &rect) const
 {
     const QPoint position = framePosToClientPos(rect.topLeft());
     const QSize size = frameSizeToClientSize(rect.size());
     return QRect(position, size);
 }
 
 QRect AbstractClient::clientRectToFrameRect(const QRect &rect) const
 {
     const QPoint position = clientPosToFramePos(rect.topLeft());
     const QSize size = clientSizeToFrameSize(rect.size());
     return QRect(position, size);
 }
 
 void AbstractClient::setElectricBorderMode(QuickTileMode mode)
 {
     if (mode != QuickTileMode(QuickTileFlag::Maximize)) {
         // sanitize the mode, ie. simplify "invalid" combinations
         if ((mode & QuickTileFlag::Horizontal) == QuickTileMode(QuickTileFlag::Horizontal))
             mode &= ~QuickTileMode(QuickTileFlag::Horizontal);
         if ((mode & QuickTileFlag::Vertical) == QuickTileMode(QuickTileFlag::Vertical))
             mode &= ~QuickTileMode(QuickTileFlag::Vertical);
     }
     m_electricMode = mode;
 }
 
 void AbstractClient::setElectricBorderMaximizing(bool maximizing)
 {
     m_electricMaximizing = maximizing;
     if (maximizing)
         outline()->show(electricBorderMaximizeGeometry(Cursor::pos(), desktop()), moveResizeGeometry());
     else
         outline()->hide();
     elevate(maximizing);
 }
 
 QRect AbstractClient::electricBorderMaximizeGeometry(QPoint pos, int desktop)
 {
     if (electricBorderMode() == QuickTileMode(QuickTileFlag::Maximize)) {
         if (maximizeMode() == MaximizeFull)
             return geometryRestore();
         else
             return workspace()->clientArea(MaximizeArea, pos, desktop);
     }
 
     QRect ret = workspace()->clientArea(MaximizeArea, pos, desktop);
     if (electricBorderMode() & QuickTileFlag::Left)
         ret.setRight(ret.left()+ret.width()/2 - 1);
     else if (electricBorderMode() & QuickTileFlag::Right)
         ret.setLeft(ret.right()-(ret.width()-ret.width()/2) + 1);
     if (electricBorderMode() & QuickTileFlag::Top)
         ret.setBottom(ret.top()+ret.height()/2 - 1);
     else if (electricBorderMode() & QuickTileFlag::Bottom)
         ret.setTop(ret.bottom()-(ret.height()-ret.height()/2) + 1);
 
     return ret;
 }
 
 void AbstractClient::setQuickTileMode(QuickTileMode mode, bool keyboard)
 {
     // Only allow quick tile on a regular window.
     if (!isResizable()) {
         return;
     }
 
     workspace()->updateFocusMousePosition(Cursor::pos()); // may cause leave event
 
     GeometryUpdatesBlocker blocker(this);
 
     if (mode == QuickTileMode(QuickTileFlag::Maximize)) {
         m_quickTileMode = int(QuickTileFlag::None);
         if (maximizeMode() == MaximizeFull) {
             setMaximize(false, false);
         } else {
             QRect prev_geom_restore = geometryRestore(); // setMaximize() would set moveResizeGeom as geom_restore
             m_quickTileMode = int(QuickTileFlag::Maximize);
             setMaximize(true, true);
             QRect clientArea = workspace()->clientArea(MaximizeArea, this);
             if (frameGeometry().top() != clientArea.top()) {
                 QRect r(frameGeometry());
                 r.moveTop(clientArea.top());
                 setFrameGeometry(r);
             }
             setGeometryRestore(prev_geom_restore);
         }
         emit quickTileModeChanged();
         return;
     }
 
     // sanitize the mode, ie. simplify "invalid" combinations
     if ((mode & QuickTileFlag::Horizontal) == QuickTileMode(QuickTileFlag::Horizontal))
         mode &= ~QuickTileMode(QuickTileFlag::Horizontal);
     if ((mode & QuickTileFlag::Vertical) == QuickTileMode(QuickTileFlag::Vertical))
         mode &= ~QuickTileMode(QuickTileFlag::Vertical);
 
     setElectricBorderMode(mode); // used by ::electricBorderMaximizeGeometry(.)
 
     // restore from maximized so that it is possible to tile maximized windows with one hit or by dragging
     if (maximizeMode() != MaximizeRestore) {
 
         if (mode != QuickTileMode(QuickTileFlag::None)) {
             // decorations may turn off some borders when tiled
             const ForceGeometry_t geom_mode = isDecorated() ? ForceGeometrySet : NormalGeometrySet;
             m_quickTileMode = int(QuickTileFlag::None); // Temporary, so the maximize code doesn't get all confused
 
             setMaximize(false, false);
 
             setFrameGeometry(electricBorderMaximizeGeometry(keyboard ? frameGeometry().center() : Cursor::pos(), desktop()), geom_mode);
             // Store the mode change
             m_quickTileMode = mode;
         } else {
             m_quickTileMode = mode;
             setMaximize(false, false);
         }
 
         emit quickTileModeChanged();
 
         return;
     }
 
     if (mode != QuickTileMode(QuickTileFlag::None)) {
         QPoint whichScreen = keyboard ? frameGeometry().center() : Cursor::pos();
 
         // If trying to tile to the side that the window is already tiled to move the window to the next
         // screen if it exists, otherwise toggle the mode (set QuickTileFlag::None)
         if (quickTileMode() == mode) {
             const int numScreens = screens()->count();
             const int curScreen = screen();
             int nextScreen = curScreen;
             QVarLengthArray<QRect> screens(numScreens);
             for (int i = 0; i < numScreens; ++i)   // Cache
                 screens[i] = Screens::self()->geometry(i);
             for (int i = 0; i < numScreens; ++i) {
 
                 if (i == curScreen)
                     continue;
 
                 if (screens[i].bottom() <= screens[curScreen].top() || screens[i].top() >= screens[curScreen].bottom())
                     continue; // not in horizontal line
 
                 const int x = screens[i].center().x();
                 if ((mode & QuickTileFlag::Horizontal) == QuickTileMode(QuickTileFlag::Left)) {
                     if (x >= screens[curScreen].center().x() || (curScreen != nextScreen && x <= screens[nextScreen].center().x()))
                         continue; // not left of current or more left then found next
                 } else if ((mode & QuickTileFlag::Horizontal) == QuickTileMode(QuickTileFlag::Right)) {
                     if (x <= screens[curScreen].center().x() || (curScreen != nextScreen && x >= screens[nextScreen].center().x()))
                         continue; // not right of current or more right then found next
                 }
 
                 nextScreen = i;
             }
 
             if (nextScreen == curScreen) {
                 mode = QuickTileFlag::None; // No other screens, toggle tiling
             } else {
                 // Move to other screen
                 setFrameGeometry(geometryRestore().translated(screens[nextScreen].topLeft() - screens[curScreen].topLeft()));
                 whichScreen = screens[nextScreen].center();
 
                 // Swap sides
                 if (mode & QuickTileFlag::Horizontal) {
                     mode = (~mode & QuickTileFlag::Horizontal) | (mode & QuickTileFlag::Vertical);
                 }
             }
             setElectricBorderMode(mode); // used by ::electricBorderMaximizeGeometry(.)
         } else if (quickTileMode() == QuickTileMode(QuickTileFlag::None)) {
             // Not coming out of an existing tile, not shifting monitors, we're setting a brand new tile.
             // Store geometry first, so we can go out of this tile later.
             setGeometryRestore(frameGeometry());
         }
 
         if (mode != QuickTileMode(QuickTileFlag::None)) {
             m_quickTileMode = mode;
             // decorations may turn off some borders when tiled
             const ForceGeometry_t geom_mode = isDecorated() ? ForceGeometrySet : NormalGeometrySet;
             // Temporary, so the maximize code doesn't get all confused
             m_quickTileMode = int(QuickTileFlag::None);
             setFrameGeometry(electricBorderMaximizeGeometry(whichScreen, desktop()), geom_mode);
         }
 
         // Store the mode change
         m_quickTileMode = mode;
     }
 
     if (mode == QuickTileMode(QuickTileFlag::None)) {
         m_quickTileMode = int(QuickTileFlag::None);
         // Untiling, so just restore geometry, and we're done.
         if (!geometryRestore().isValid()) // invalid if we started maximized and wait for placement
             setGeometryRestore(frameGeometry());
         // decorations may turn off some borders when tiled
         const ForceGeometry_t geom_mode = isDecorated() ? ForceGeometrySet : NormalGeometrySet;
         setFrameGeometry(geometryRestore(), geom_mode);
         checkWorkspacePosition(); // Just in case it's a different screen
     }
     emit quickTileModeChanged();
 }
 
 void AbstractClient::sendToScreen(int newScreen)
 {
     newScreen = rules()->checkScreen(newScreen);
     if (isActive()) {
         screens()->setCurrent(newScreen);
         // might impact the layer of a fullscreen window
         foreach (AbstractClient *cc, workspace()->allClientList()) {
             if (cc->isFullScreen() && cc->screen() == newScreen) {
                 cc->updateLayer();
             }
         }
     }
     if (screen() == newScreen)   // Don't use isOnScreen(), that's true even when only partially
         return;
 
     GeometryUpdatesBlocker blocker(this);
 
     // operating on the maximized / quicktiled window would leave the old geom_restore behind,
     // so we clear the state first
     MaximizeMode maxMode = maximizeMode();
     QuickTileMode qtMode = quickTileMode();
     if (maxMode != MaximizeRestore)
         maximize(MaximizeRestore);
     if (qtMode != QuickTileMode(QuickTileFlag::None))
         setQuickTileMode(QuickTileFlag::None, true);
 
     QRect oldScreenArea = workspace()->clientArea(MaximizeArea, this);
     QRect screenArea = workspace()->clientArea(MaximizeArea, newScreen, desktop());
 
     // the window can have its center so that the position correction moves the new center onto
     // the old screen, what will tile it where it is. Ie. the screen is not changed
     // this happens esp. with electric border quicktiling
     if (qtMode != QuickTileMode(QuickTileFlag::None))
         keepInArea(oldScreenArea);
 
     QRect oldGeom = frameGeometry();
     QRect newGeom = oldGeom;
     // move the window to have the same relative position to the center of the screen
     // (i.e. one near the middle of the right edge will also end up near the middle of the right edge)
     QPoint center = newGeom.center() - oldScreenArea.center();
     center.setX(center.x() * screenArea.width() / oldScreenArea.width());
     center.setY(center.y() * screenArea.height() / oldScreenArea.height());
     center += screenArea.center();
     newGeom.moveCenter(center);
     setFrameGeometry(newGeom);
 
     // If the window was inside the old screen area, explicitly make sure its inside also the new screen area.
     // Calling checkWorkspacePosition() should ensure that, but when moving to a small screen the window could
     // be big enough to overlap outside of the new screen area, making struts from other screens come into effect,
     // which could alter the resulting geometry.
     if (oldScreenArea.contains(oldGeom)) {
         keepInArea(screenArea);
     }
 
     // align geom_restore - checkWorkspacePosition operates on it
     setGeometryRestore(frameGeometry());
 
     checkWorkspacePosition(oldGeom);
 
     // re-align geom_restore to constrained geometry
     setGeometryRestore(frameGeometry());
 
     // finally reset special states
     // NOTICE that MaximizeRestore/QuickTileFlag::None checks are required.
     // eg. setting QuickTileFlag::None would break maximization
     if (maxMode != MaximizeRestore)
         maximize(maxMode);
     if (qtMode != QuickTileMode(QuickTileFlag::None) && qtMode != quickTileMode())
         setQuickTileMode(qtMode, true);
 
     auto tso = workspace()->ensureStackingOrder(transients());
     for (auto it = tso.constBegin(), end = tso.constEnd(); it != end; ++it)
         (*it)->sendToScreen(newScreen);
 }
 
 void AbstractClient::checkWorkspacePosition(QRect oldGeometry, int oldDesktop, QRect oldClientGeometry)
 {
     enum { Left = 0, Top, Right, Bottom };
     const int border[4] = { borderLeft(), borderTop(), borderRight(), borderBottom() };
     if( !oldGeometry.isValid())
         oldGeometry = frameGeometry();
     if( oldDesktop == -2 )
         oldDesktop = desktop();
     if (!oldClientGeometry.isValid())
         oldClientGeometry = oldGeometry.adjusted(border[Left], border[Top], -border[Right], -border[Bottom]);
     if (isDesktop())
         return;
     if (isFullScreen()) {
         QRect area = workspace()->clientArea(FullScreenArea, this);
         if (frameGeometry() != area)
             setFrameGeometry(area);
         return;
     }
     if (isDock())
         return;
 
     if (maximizeMode() != MaximizeRestore) {
         // TODO update geom_restore?
         changeMaximize(false, false, true);   // adjust size
         const QRect screenArea = workspace()->clientArea(ScreenArea, this);
         QRect geom = frameGeometry();
         checkOffscreenPosition(&geom, screenArea);
         setFrameGeometry(geom);
         return;
     }
 
     if (quickTileMode() != QuickTileMode(QuickTileFlag::None)) {
         setFrameGeometry(electricBorderMaximizeGeometry(frameGeometry().center(), desktop()));
         return;
     }
 
     // this can be true only if this window was mapped before KWin
     // was started - in such case, don't adjust position to workarea,
     // because the window already had its position, and if a window
     // with a strut altering the workarea would be managed in initialization
     // after this one, this window would be moved
     if (!workspace() || workspace()->initializing())
         return;
 
     // If the window was touching an edge before but not now move it so it is again.
     // Old and new maximums have different starting values so windows on the screen
     // edge will move when a new strut is placed on the edge.
     QRect oldScreenArea;
     if( workspace()->inUpdateClientArea()) {
         // we need to find the screen area as it was before the change
         oldScreenArea = QRect( 0, 0, workspace()->oldDisplayWidth(), workspace()->oldDisplayHeight());
         int distance = INT_MAX;
         foreach(const QRect &r, workspace()->previousScreenSizes()) {
             int d = r.contains( oldGeometry.center()) ? 0 : ( r.center() - oldGeometry.center()).manhattanLength();
             if( d < distance ) {
                 distance = d;
                 oldScreenArea = r;
             }
         }
     } else {
         oldScreenArea = workspace()->clientArea(ScreenArea, oldGeometry.center(), oldDesktop);
     }
     const QRect oldGeomTall = QRect(oldGeometry.x(), oldScreenArea.y(), oldGeometry.width(), oldScreenArea.height());   // Full screen height
     const QRect oldGeomWide = QRect(oldScreenArea.x(), oldGeometry.y(), oldScreenArea.width(), oldGeometry.height());   // Full screen width
     int oldTopMax = oldScreenArea.y();
     int oldRightMax = oldScreenArea.x() + oldScreenArea.width();
     int oldBottomMax = oldScreenArea.y() + oldScreenArea.height();
     int oldLeftMax = oldScreenArea.x();
     const QRect screenArea = workspace()->clientArea(ScreenArea, geometryRestore().center(), desktop());
     int topMax = screenArea.y();
     int rightMax = screenArea.x() + screenArea.width();
     int bottomMax = screenArea.y() + screenArea.height();
     int leftMax = screenArea.x();
     QRect newGeom = geometryRestore(); // geometry();
     QRect newClientGeom = newGeom.adjusted(border[Left], border[Top], -border[Right], -border[Bottom]);
     const QRect newGeomTall = QRect(newGeom.x(), screenArea.y(), newGeom.width(), screenArea.height());   // Full screen height
     const QRect newGeomWide = QRect(screenArea.x(), newGeom.y(), screenArea.width(), newGeom.height());   // Full screen width
     // Get the max strut point for each side where the window is (E.g. Highest point for
     // the bottom struts bounded by the window's left and right sides).
 
     // These 4 compute old bounds ...
     auto moveAreaFunc = workspace()->inUpdateClientArea() ?
                                 &Workspace::previousRestrictedMoveArea : //... the restricted areas changed
                                 &Workspace::restrictedMoveArea; //... when e.g. active desktop or screen changes
 
     for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaTop)) {
         QRect rect = r & oldGeomTall;
         if (!rect.isEmpty())
             oldTopMax = qMax(oldTopMax, rect.y() + rect.height());
     }
     for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaRight)) {
         QRect rect = r & oldGeomWide;
         if (!rect.isEmpty())
             oldRightMax = qMin(oldRightMax, rect.x());
     }
     for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaBottom)) {
         QRect rect = r & oldGeomTall;
         if (!rect.isEmpty())
             oldBottomMax = qMin(oldBottomMax, rect.y());
     }
     for (const QRect &r : (workspace()->*moveAreaFunc)(oldDesktop, StrutAreaLeft)) {
         QRect rect = r & oldGeomWide;
         if (!rect.isEmpty())
             oldLeftMax = qMax(oldLeftMax, rect.x() + rect.width());
     }
 
     // These 4 compute new bounds
     for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaTop)) {
         QRect rect = r & newGeomTall;
         if (!rect.isEmpty())
             topMax = qMax(topMax, rect.y() + rect.height());
     }
     for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaRight)) {
         QRect rect = r & newGeomWide;
         if (!rect.isEmpty())
             rightMax = qMin(rightMax, rect.x());
     }
     for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaBottom)) {
         QRect rect = r & newGeomTall;
         if (!rect.isEmpty())
             bottomMax = qMin(bottomMax, rect.y());
     }
     for (const QRect &r : workspace()->restrictedMoveArea(desktop(), StrutAreaLeft)) {
         QRect rect = r & newGeomWide;
         if (!rect.isEmpty())
             leftMax = qMax(leftMax, rect.x() + rect.width());
     }
 
 
     // Check if the sides were inside or touching but are no longer
     bool keep[4] = {false, false, false, false};
     bool save[4] = {false, false, false, false};
     int padding[4] = {0, 0, 0, 0};
     if (oldGeometry.x() >= oldLeftMax)
         save[Left] = newGeom.x() < leftMax;
     if (oldGeometry.x() == oldLeftMax)
         keep[Left] = newGeom.x() != leftMax;
     else if (oldClientGeometry.x() == oldLeftMax && newClientGeom.x() != leftMax) {
         padding[0] = border[Left];
         keep[Left] = true;
     }
     if (oldGeometry.y() >= oldTopMax)
         save[Top] = newGeom.y() < topMax;
     if (oldGeometry.y() == oldTopMax)
         keep[Top] = newGeom.y() != topMax;
     else if (oldClientGeometry.y() == oldTopMax && newClientGeom.y() != topMax) {
         padding[1] = border[Left];
         keep[Top] = true;
     }
     if (oldGeometry.right() <= oldRightMax - 1)
         save[Right] = newGeom.right() > rightMax - 1;
     if (oldGeometry.right() == oldRightMax - 1)
         keep[Right] = newGeom.right() != rightMax - 1;
     else if (oldClientGeometry.right() == oldRightMax - 1 && newClientGeom.right() != rightMax - 1) {
         padding[2] = border[Right];
         keep[Right] = true;
     }
     if (oldGeometry.bottom() <= oldBottomMax - 1)
         save[Bottom] = newGeom.bottom() > bottomMax - 1;
     if (oldGeometry.bottom() == oldBottomMax - 1)
         keep[Bottom] = newGeom.bottom() != bottomMax - 1;
     else if (oldClientGeometry.bottom() == oldBottomMax - 1 && newClientGeom.bottom() != bottomMax - 1) {
         padding[3] = border[Bottom];
         keep[Bottom] = true;
     }
 
     // if randomly touches opposing edges, do not favor either
     if (keep[Left] && keep[Right]) {
         keep[Left] = keep[Right] = false;
         padding[0] = padding[2] = 0;
     }
     if (keep[Top] && keep[Bottom]) {
         keep[Top] = keep[Bottom] = false;
         padding[1] = padding[3] = 0;
     }
 
     if (save[Left] || keep[Left])
         newGeom.moveLeft(qMax(leftMax, screenArea.x()) - padding[0]);
     if (padding[0] && screens()->intersecting(newGeom) > 1)
         newGeom.moveLeft(newGeom.left() + padding[0]);
     if (save[Top] || keep[Top])
         newGeom.moveTop(qMax(topMax, screenArea.y()) - padding[1]);
     if (padding[1] && screens()->intersecting(newGeom) > 1)
         newGeom.moveTop(newGeom.top() + padding[1]);
     if (save[Right] || keep[Right])
         newGeom.moveRight(qMin(rightMax - 1, screenArea.right()) + padding[2]);
     if (padding[2] && screens()->intersecting(newGeom) > 1)
         newGeom.moveRight(newGeom.right() - padding[2]);
     if (oldGeometry.x() >= oldLeftMax && newGeom.x() < leftMax)
         newGeom.setLeft(qMax(leftMax, screenArea.x()));
     else if (oldClientGeometry.x() >= oldLeftMax && newGeom.x() + border[Left] < leftMax) {
         newGeom.setLeft(qMax(leftMax, screenArea.x()) - border[Left]);
         if (screens()->intersecting(newGeom) > 1)
             newGeom.setLeft(newGeom.left() + border[Left]);
     }
     if (save[Bottom] || keep[Bottom])
         newGeom.moveBottom(qMin(bottomMax - 1, screenArea.bottom()) + padding[3]);
     if (padding[3] && screens()->intersecting(newGeom) > 1)
         newGeom.moveBottom(newGeom.bottom() - padding[3]);
     if (oldGeometry.y() >= oldTopMax && newGeom.y() < topMax)
         newGeom.setTop(qMax(topMax, screenArea.y()));
     else if (oldClientGeometry.y() >= oldTopMax && newGeom.y() + border[Top] < topMax) {
         newGeom.setTop(qMax(topMax, screenArea.y()) - border[Top]);
         if (screens()->intersecting(newGeom) > 1)
             newGeom.setTop(newGeom.top() + border[Top]);
     }
 
     checkOffscreenPosition(&newGeom, screenArea);
     // Obey size hints. TODO: We really should make sure it stays in the right place
     if (!isShade())
         newGeom.setSize(constrainFrameSize(newGeom.size()));
 
     if (newGeom != frameGeometry())
         setFrameGeometry(newGeom);
 }
 
 void AbstractClient::checkOffscreenPosition(QRect* geom, const QRect& screenArea)
 {
     if (geom->left() > screenArea.right()) {
         geom->moveLeft(screenArea.right() - screenArea.width()/4);
     } else if (geom->right() < screenArea.left()) {
         geom->moveRight(screenArea.left() + screenArea.width()/4);
     }
     if (geom->top() > screenArea.bottom()) {
         geom->moveTop(screenArea.bottom() - screenArea.height()/4);
     } else if (geom->bottom() < screenArea.top()) {
         geom->moveBottom(screenArea.top() + screenArea.width()/4);
     }
 }
 
 /**
  * Returns the appropriate frame size for the current client size.
  *
  * This is equivalent to clientSizeToFrameSize(constrainClientSize(clientSize())).
  */
 QSize AbstractClient::adjustedSize() const
 {
     return clientSizeToFrameSize(constrainClientSize(clientSize()));
 }
 
 /**
  * Constrains the client size @p size according to a set of the window's size hints.
  *
  * Default implementation applies only minimum and maximum size constraints.
  */
 QSize AbstractClient::constrainClientSize(const QSize &size, SizeMode mode) const
 {
     Q_UNUSED(mode)
 
     int width = size.width();
     int height = size.height();
 
     // When user is resizing the window, the move resize geometry may have negative width or
     // height. In which case, we need to set negative dimensions to reasonable values.
     if (width < 1) {
         width = 1;
     }
     if (height < 1) {
         height = 1;
     }
 
     const QSize minimumSize = minSize();
     const QSize maximumSize = maxSize();
 
     width = qBound(minimumSize.width(), width, maximumSize.width());
     height = qBound(minimumSize.height(), height, maximumSize.height());
 
     return QSize(width, height);
 }
 
 /**
  * Constrains the frame size @p size according to a set of the window's size hints.
  */
 QSize AbstractClient::constrainFrameSize(const QSize &size, SizeMode mode) const
 {
     const QSize unconstrainedClientSize = frameSizeToClientSize(size);
     const QSize constrainedClientSize = constrainClientSize(unconstrainedClientSize, mode);
     return clientSizeToFrameSize(constrainedClientSize);
 }
 
 /**
  * Returns @c true if the AbstractClient can be shown in full screen mode; otherwise @c false.
  *
  * Default implementation returns @c false.
  */
 bool AbstractClient::isFullScreenable() const
 {
     return false;
 }
 
 /**
  * Returns @c true if the AbstractClient is currently being shown in full screen mode; otherwise @c false.
  *
  * A client in full screen mode occupies the entire screen with no window frame around it.
  *
  * Default implementation returns @c false.
  */
 bool AbstractClient::isFullScreen() const
 {
     return false;
 }
 
 /**
  * Returns whether requests initiated by the user to enter or leave full screen mode are honored.
  *
  * Default implementation returns @c false.
  */
 bool AbstractClient::userCanSetFullScreen() const
 {
     return false;
 }
 
 /**
  * Asks the AbstractClient to enter or leave full screen mode.
  *
  * Default implementation does nothing.
  *
  * @param set @c true if the AbstractClient has to be shown in full screen mode, otherwise @c false
  * @param user @c true if the request is initiated by the user, otherwise @c false
  */
 void AbstractClient::setFullScreen(bool set, bool user)
 {
     Q_UNUSED(set)
     Q_UNUSED(user)
 }
 
 /**
  * Returns @c true if the AbstractClient can be minimized; otherwise @c false.
  *
  * Default implementation returns @c false.
  */
 bool AbstractClient::isMinimizable() const
 {
     return false;
 }
 
 /**
  * Returns @c true if the AbstractClient can be maximized; otherwise @c false.
  *
  * Default implementation returns @c false.
  */
 bool AbstractClient::isMaximizable() const
 {
     return false;
 }
 
 /**
  * Returns the currently applied maximize mode.
  *
  * Default implementation returns MaximizeRestore.
  */
 MaximizeMode AbstractClient::maximizeMode() const
 {
     return MaximizeRestore;
 }
 
 /**
  * Returns the last requested maximize mode.
  *
  * On X11, this method always matches maximizeMode(). On Wayland, it is asynchronous.
  *
  * Default implementation matches maximizeMode().
  */
 MaximizeMode AbstractClient::requestedMaximizeMode() const
 {
     return maximizeMode();
 }
 
 /**
  * Returns the geometry of the AbstractClient before it was maximized or quick tiled.
  */
 QRect AbstractClient::geometryRestore() const
 {
     return m_maximizeGeometryRestore;
 }
 
 /**
  * Sets the geometry of the AbstractClient before it was maximized or quick tiled to @p rect.
  */
 void AbstractClient::setGeometryRestore(const QRect &rect)
 {
     m_maximizeGeometryRestore = rect;
 }
 
 /**
  * Toggles the maximized state along specified dimensions @p horizontal and @p vertical.
  *
  * If @p adjust is @c true, only frame geometry will be updated to match requestedMaximizeMode().
  *
  * Default implementation does nothing.
  */
 void AbstractClient::changeMaximize(bool horizontal, bool vertical, bool adjust)
 {
     Q_UNUSED(horizontal)
     Q_UNUSED(vertical)
     Q_UNUSED(adjust)
 }
 
 }
diff --git a/abstract_client.h b/abstract_client.h
index af5a64c2a..9ce551f0d 100644
--- a/abstract_client.h
+++ b/abstract_client.h
@@ -1,1359 +1,1360 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 #ifndef KWIN_ABSTRACT_CLIENT_H
 #define KWIN_ABSTRACT_CLIENT_H
 
 #include "toplevel.h"
 #include "options.h"
 #include "rules.h"
 #include "cursor.h"
 
 #include <memory>
 
 #include <QElapsedTimer>
 #include <QPointer>
 
 namespace KWayland
 {
 namespace Server
 {
 class PlasmaWindowInterface;
 }
 }
 
 namespace KDecoration2
 {
 class Decoration;
 }
 
 namespace KWin
 {
 class Group;
 
 namespace TabBox
 {
 class TabBoxClientImpl;
 }
 
 namespace Decoration
 {
 class DecoratedClientImpl;
 class DecorationPalette;
 }
 
 class KWIN_EXPORT AbstractClient : public Toplevel
 {
     Q_OBJECT
 
     /**
      * Whether this Client is fullScreen. A Client might either be fullScreen due to the _NET_WM property
      * or through a legacy support hack. The fullScreen state can only be changed if the Client does not
      * use the legacy hack. To be sure whether the state changed, connect to the notify signal.
      */
     Q_PROPERTY(bool fullScreen READ isFullScreen WRITE setFullScreen NOTIFY fullScreenChanged)
 
     /**
      * Whether the Client can be set to fullScreen. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      */
     Q_PROPERTY(bool fullScreenable READ isFullScreenable)
 
     /**
      * Whether this Client is active or not. Use Workspace::activateClient() to activate a Client.
      * @see Workspace::activateClient
      */
     Q_PROPERTY(bool active READ isActive NOTIFY activeChanged)
 
     /**
      * The desktop this Client is on. If the Client is on all desktops the property has value -1.
      * This is a legacy property, use x11DesktopIds instead
      */
     Q_PROPERTY(int desktop READ desktop WRITE setDesktop NOTIFY desktopChanged)
 
     /**
      * Whether the Client is on all desktops. That is desktop is -1.
      */
     Q_PROPERTY(bool onAllDesktops READ isOnAllDesktops WRITE setOnAllDesktops NOTIFY desktopChanged)
 
     /**
      * The x11 ids for all desktops this client is in. On X11 this list will always have a length of 1
      */
     Q_PROPERTY(QVector<uint> x11DesktopIds READ x11DesktopIds NOTIFY x11DesktopIdsChanged)
 
     /**
      * Indicates that the window should not be included on a taskbar.
      */
     Q_PROPERTY(bool skipTaskbar READ skipTaskbar WRITE setSkipTaskbar NOTIFY skipTaskbarChanged)
 
     /**
      * Indicates that the window should not be included on a Pager.
      */
     Q_PROPERTY(bool skipPager READ skipPager WRITE setSkipPager NOTIFY skipPagerChanged)
 
     /**
      * Whether the Client should be excluded from window switching effects.
      */
     Q_PROPERTY(bool skipSwitcher READ skipSwitcher WRITE setSkipSwitcher NOTIFY skipSwitcherChanged)
 
     /**
      * Whether the window can be closed by the user. The value is evaluated each time the getter is called.
      * Because of that no changed signal is provided.
      */
     Q_PROPERTY(bool closeable READ isCloseable)
 
     Q_PROPERTY(QIcon icon READ icon NOTIFY iconChanged)
 
     /**
      * Whether the Client is set to be kept above other windows.
      */
     Q_PROPERTY(bool keepAbove READ keepAbove WRITE setKeepAbove NOTIFY keepAboveChanged)
 
     /**
      * Whether the Client is set to be kept below other windows.
      */
     Q_PROPERTY(bool keepBelow READ keepBelow WRITE setKeepBelow NOTIFY keepBelowChanged)
 
     /**
      * Whether the Client can be shaded. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      */
     Q_PROPERTY(bool shadeable READ isShadeable)
 
     /**
      * Whether the Client is shaded.
      */
     Q_PROPERTY(bool shade READ isShade WRITE setShade NOTIFY shadeChanged)
 
     /**
      * Whether the Client can be minimized. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      */
     Q_PROPERTY(bool minimizable READ isMinimizable)
 
     /**
      * Whether the Client is minimized.
      */
     Q_PROPERTY(bool minimized READ isMinimized WRITE setMinimized NOTIFY minimizedChanged)
 
     /**
      * The optional geometry representing the minimized Client in e.g a taskbar.
      * See _NET_WM_ICON_GEOMETRY at https://standards.freedesktop.org/wm-spec/wm-spec-latest.html .
      * The value is evaluated each time the getter is called.
      * Because of that no changed signal is provided.
      */
     Q_PROPERTY(QRect iconGeometry READ iconGeometry)
 
     /**
      * Returns whether the window is any of special windows types (desktop, dock, splash, ...),
      * i.e. window types that usually don't have a window frame and the user does not use window
      * management (moving, raising,...) on them.
      * The value is evaluated each time the getter is called.
      * Because of that no changed signal is provided.
      */
     Q_PROPERTY(bool specialWindow READ isSpecialWindow)
 
     /**
      * Whether window state _NET_WM_STATE_DEMANDS_ATTENTION is set. This state indicates that some
      * action in or with the window happened. For example, it may be set by the Window Manager if
      * the window requested activation but the Window Manager refused it, or the application may set
      * it if it finished some work. This state may be set by both the Client and the Window Manager.
      * It should be unset by the Window Manager when it decides the window got the required attention
      * (usually, that it got activated).
      */
     Q_PROPERTY(bool demandsAttention READ isDemandingAttention WRITE demandAttention NOTIFY demandsAttentionChanged)
 
     /**
      * The Caption of the Client. Read from WM_NAME property together with a suffix for hostname and shortcut.
      * To read only the caption as provided by WM_NAME, use the getter with an additional @c false value.
      */
     Q_PROPERTY(QString caption READ caption NOTIFY captionChanged)
 
     /**
      * Minimum size as specified in WM_NORMAL_HINTS
      */
     Q_PROPERTY(QSize minSize READ minSize)
 
     /**
      * Maximum size as specified in WM_NORMAL_HINTS
      */
     Q_PROPERTY(QSize maxSize READ maxSize)
 
     /**
      * Whether the Client can accept keyboard focus.
      * The value is evaluated each time the getter is called.
      * Because of that no changed signal is provided.
      */
     Q_PROPERTY(bool wantsInput READ wantsInput)
 
     /**
      * Whether the Client is a transient Window to another Window.
      * @see transientFor
      */
     Q_PROPERTY(bool transient READ isTransient NOTIFY transientChanged)
 
     /**
      * The Client to which this Client is a transient if any.
      */
     Q_PROPERTY(KWin::AbstractClient *transientFor READ transientFor NOTIFY transientChanged)
 
     /**
      * Whether the Client represents a modal window.
      */
     Q_PROPERTY(bool modal READ isModal NOTIFY modalChanged)
 
     /**
      * The geometry of this Client. Be aware that depending on resize mode the frameGeometryChanged
      * signal might be emitted at each resize step or only at the end of the resize operation.
      */
     Q_PROPERTY(QRect geometry READ frameGeometry WRITE setFrameGeometry)
 
     /**
      * Whether the Client is currently being moved by the user.
      * Notify signal is emitted when the Client starts or ends move/resize mode.
      */
     Q_PROPERTY(bool move READ isMove NOTIFY moveResizedChanged)
 
     /**
      * Whether the Client is currently being resized by the user.
      * Notify signal is emitted when the Client starts or ends move/resize mode.
      */
     Q_PROPERTY(bool resize READ isResize NOTIFY moveResizedChanged)
 
     /**
      * Whether the decoration is currently using an alpha channel.
      */
     Q_PROPERTY(bool decorationHasAlpha READ decorationHasAlpha)
 
     /**
      * Whether the window has a decoration or not.
      * This property is not allowed to be set by applications themselves.
      * The decision whether a window has a border or not belongs to the window manager.
      * If this property gets abused by application developers, it will be removed again.
      */
     Q_PROPERTY(bool noBorder READ noBorder WRITE setNoBorder)
 
     /**
      * Whether the Client provides context help. Mostly needed by decorations to decide whether to
      * show the help button or not.
      */
     Q_PROPERTY(bool providesContextHelp READ providesContextHelp CONSTANT)
 
     /**
      * Whether the Client can be maximized both horizontally and vertically.
      * The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      */
     Q_PROPERTY(bool maximizable READ isMaximizable)
 
     /**
      * Whether the Client is moveable. Even if it is not moveable, it might be possible to move
      * it to another screen. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      * @see moveableAcrossScreens
      */
     Q_PROPERTY(bool moveable READ isMovable)
 
     /**
      * Whether the Client can be moved to another screen. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      * @see moveable
      */
     Q_PROPERTY(bool moveableAcrossScreens READ isMovableAcrossScreens)
 
     /**
      * Whether the Client can be resized. The property is evaluated each time it is invoked.
      * Because of that there is no notify signal.
      */
     Q_PROPERTY(bool resizeable READ isResizable)
 
     /**
      * The desktop file name of the application this AbstractClient belongs to.
      *
      * This is either the base name without full path and without file extension of the
      * desktop file for the window's application (e.g. "org.kde.foo").
      *
      * The application's desktop file name can also be the full path to the desktop file
      * (e.g. "/opt/kde/share/org.kde.foo.desktop") in case it's not in a standard location.
      */
     Q_PROPERTY(QByteArray desktopFileName READ desktopFileName NOTIFY desktopFileNameChanged)
 
     /**
      * Whether an application menu is available for this Client
      */
     Q_PROPERTY(bool hasApplicationMenu READ hasApplicationMenu NOTIFY hasApplicationMenuChanged)
 
     /**
      * Whether the application menu for this Client is currently opened
      */
     Q_PROPERTY(bool applicationMenuActive READ applicationMenuActive NOTIFY applicationMenuActiveChanged)
 
     /**
      * Whether this client is unresponsive.
      *
      * When an application failed to react on a ping request in time, it is
      * considered unresponsive. This usually indicates that the application froze or crashed.
      */
     Q_PROPERTY(bool unresponsive READ unresponsive NOTIFY unresponsiveChanged)
 
     /**
      * The color scheme set on this client
      * Absolute file path, or name of palette in the user's config directory following KColorSchemes format.
      * An empty string indicates the default palette from kdeglobals is used.
      * @note this indicates the colour scheme requested, which might differ from the theme applied if the colorScheme cannot be found
      */
     Q_PROPERTY(QString colorScheme READ colorScheme NOTIFY colorSchemeChanged)
 
 public:
     ~AbstractClient() override;
 
     QWeakPointer<TabBox::TabBoxClientImpl> tabBoxClient() const {
         return m_tabBoxClient.toWeakRef();
     }
     bool isFirstInTabBox() const {
         return m_firstInTabBox;
     }
     bool skipSwitcher() const {
         return m_skipSwitcher;
     }
     void setSkipSwitcher(bool set);
 
     bool skipTaskbar() const {
         return m_skipTaskbar;
     }
     void setSkipTaskbar(bool set);
     void setOriginalSkipTaskbar(bool set);
     bool originalSkipTaskbar() const {
         return m_originalSkipTaskbar;
     }
 
     bool skipPager() const {
         return m_skipPager;
     }
     void setSkipPager(bool set);
 
     const QIcon &icon() const {
         return m_icon;
     }
 
     bool isActive() const {
         return m_active;
     }
     /**
      * Sets the client's active state to \a act.
      *
      * This function does only change the visual appearance of the client,
      * it does not change the focus setting. Use
      * Workspace::activateClient() or Workspace::requestFocus() instead.
      *
      * If a client receives or looses the focus, it calls setActive() on
      * its own.
      */
     void setActive(bool);
 
     bool keepAbove() const {
         return m_keepAbove;
     }
     void setKeepAbove(bool);
     bool keepBelow() const {
         return m_keepBelow;
     }
     void setKeepBelow(bool);
 
     void demandAttention(bool set = true);
     bool isDemandingAttention() const {
         return m_demandsAttention;
     }
 
     void cancelAutoRaise();
 
     bool wantsTabFocus() const;
 
     QMargins frameMargins() const override;
     QPoint clientPos() const override {
         return QPoint(borderLeft(), borderTop());
     }
 
     virtual void updateMouseGrab();
     /**
      * @returns The caption consisting of captionNormal and captionSuffix
      * @see captionNormal
      * @see captionSuffix
      */
     QString caption() const;
     /**
      * @returns The caption as set by the AbstractClient without any suffix.
      * @see caption
      * @see captionSuffix
      */
     virtual QString captionNormal() const = 0;
     /**
      * @returns The suffix added to the caption (e.g. shortcut, machine name, etc.)
      * @see caption
      * @see captionNormal
      */
     virtual QString captionSuffix() const = 0;
     virtual bool isCloseable() const = 0;
     // TODO: remove boolean trap
     virtual bool isShown(bool shaded_is_shown) const = 0;
     virtual bool isHiddenInternal() const = 0;
     // TODO: remove boolean trap
     virtual void hideClient(bool hide) = 0;
     virtual bool isFullScreenable() const;
     virtual bool isFullScreen() const;
     // TODO: remove boolean trap
     virtual AbstractClient *findModal(bool allow_itself = false) = 0;
     virtual bool isTransient() const;
     /**
      * @returns Whether there is a hint available to place the AbstractClient on it's parent, default @c false.
      * @see transientPlacementHint
      */
     virtual bool hasTransientPlacementHint() const;
     /**
      * Only valid id hasTransientPlacementHint is true
      * @returns The position the transient wishes to position itself
      */
     virtual QRect transientPlacement(const QRect &bounds) const;
     const AbstractClient* transientFor() const;
     AbstractClient* transientFor();
     /**
      * @returns @c true if c is the transient_for window for this client,
      *  or recursively the transient_for window
      * @todo: remove boolean trap
      */
     virtual bool hasTransient(const AbstractClient* c, bool indirect) const;
     const QList<AbstractClient*>& transients() const; // Is not indirect
     virtual void addTransient(AbstractClient *client);
     virtual void removeTransient(AbstractClient* cl);
     virtual QList<AbstractClient*> mainClients() const; // Call once before loop , is not indirect
     QList<AbstractClient*> allMainClients() const; // Call once before loop , is indirect
     /**
      * Returns true for "special" windows and false for windows which are "normal"
      * (normal=window which has a border, can be moved by the user, can be closed, etc.)
      * true for Desktop, Dock, Splash, Override and TopMenu (and Toolbar??? - for now)
      * false for Normal, Dialog, Utility and Menu (and Toolbar??? - not yet) TODO
      */
     bool isSpecialWindow() const;
     void sendToScreen(int screen);
     const QKeySequence &shortcut() const {
         return _shortcut;
     }
     void setShortcut(const QString &cut);
     virtual bool performMouseCommand(Options::MouseCommand, const QPoint &globalPos);
     void setOnAllDesktops(bool set);
     void setDesktop(int);
     void enterDesktop(VirtualDesktop *desktop);
     void leaveDesktop(VirtualDesktop *desktop);
 
     /**
      * Set the window as being on the attached list of desktops
      * On X11 it will be set to the last entry
      */
     void setDesktops(QVector<VirtualDesktop *> desktops);
 
     int desktop() const override {
         return m_desktops.isEmpty() ? (int)NET::OnAllDesktops : m_desktops.last()->x11DesktopNumber();
     }
     QVector<VirtualDesktop *> desktops() const override {
         return m_desktops;
     }
     QVector<uint> x11DesktopIds() const;
 
     void setMinimized(bool set);
     /**
      * Minimizes this client plus its transients
      */
     void minimize(bool avoid_animation = false);
     void unminimize(bool avoid_animation = false);
     bool isMinimized() const {
         return m_minimized;
     }
     virtual void setFullScreen(bool set, bool user = true);
 
     virtual void setClientShown(bool shown);
 
     QRect geometryRestore() const;
     virtual MaximizeMode maximizeMode() const;
     virtual MaximizeMode requestedMaximizeMode() const;
     void maximize(MaximizeMode);
     /**
      * Sets the maximization according to @p vertically and @p horizontally.
      */
     Q_INVOKABLE void setMaximize(bool vertically, bool horizontally);
     virtual bool noBorder() const = 0;
     virtual void setNoBorder(bool set) = 0;
     virtual void blockActivityUpdates(bool b = true) = 0;
     QPalette palette() const;
     const Decoration::DecorationPalette *decorationPalette() const;
     /**
      * Returns whether the window is resizable or has a fixed size.
      */
     virtual bool isResizable() const = 0;
     /**
      * Returns whether the window is moveable or has a fixed position.
      */
     virtual bool isMovable() const = 0;
     /**
      * Returns whether the window can be moved to another screen.
      */
     virtual bool isMovableAcrossScreens() const = 0;
     /**
      * @c true only for @c ShadeNormal
      */
     bool isShade() const {
         return shadeMode() == ShadeNormal;
     }
     /**
      * Default implementation returns @c ShadeNone
      */
     virtual ShadeMode shadeMode() const; // Prefer isShade()
     void setShade(bool set);
     /**
      * Default implementation does nothing
      */
     virtual void setShade(ShadeMode mode);
     /**
      * Whether the Client can be shaded. Default implementation returns @c false.
      */
     virtual bool isShadeable() const;
     virtual bool isMaximizable() const;
     virtual bool isMinimizable() const;
     virtual QRect iconGeometry() const;
     virtual bool userCanSetFullScreen() const;
     virtual bool userCanSetNoBorder() const = 0;
     virtual void checkNoBorder();
     virtual void setOnActivities(QStringList newActivitiesList);
     virtual void setOnAllActivities(bool set) = 0;
     const WindowRules* rules() const {
         return &m_rules;
     }
     void removeRule(Rules* r);
     void setupWindowRules(bool ignore_temporary);
     void evaluateWindowRules();
     virtual void applyWindowRules();
     virtual void takeFocus() = 0;
     virtual bool wantsInput() const = 0;
     /**
      * Whether a dock window wants input.
      *
      * By default KWin doesn't pass focus to a dock window unless a force activate
      * request is provided.
      *
      * This method allows to have dock windows take focus also through flags set on
      * the window.
      *
      * The default implementation returns @c false.
      */
     virtual bool dockWantsInput() const;
     void checkWorkspacePosition(QRect oldGeometry = QRect(), int oldDesktop = -2,  QRect oldClientGeometry = QRect());
     virtual xcb_timestamp_t userTime() const;
     virtual void updateWindowRules(Rules::Types selection);
 
     void growHorizontal();
     void shrinkHorizontal();
     void growVertical();
     void shrinkVertical();
     void updateMoveResize(const QPointF &currentGlobalCursor);
     /**
      * Ends move resize when all pointer buttons are up again.
      */
     void endMoveResize();
     void keyPressEvent(uint key_code);
 
     void enterEvent(const QPoint &globalPos);
     void leaveEvent();
 
     /**
      * These values represent positions inside an area
      */
     enum Position {
         // without prefix, they'd conflict with Qt::TopLeftCorner etc. :(
         PositionCenter         = 0x00,
         PositionLeft           = 0x01,
         PositionRight          = 0x02,
         PositionTop            = 0x04,
         PositionBottom         = 0x08,
         PositionTopLeft        = PositionLeft | PositionTop,
         PositionTopRight       = PositionRight | PositionTop,
         PositionBottomLeft     = PositionLeft | PositionBottom,
         PositionBottomRight    = PositionRight | PositionBottom
     };
     Position titlebarPosition() const;
     bool titlebarPositionUnderMouse() const;
 
     // a helper for the workspace window packing. tests for screen validity and updates since in maximization case as with normal moving
     void packTo(int left, int top);
 
     /**
      * Sets the quick tile mode ("snap") of this window.
      * This will also handle preserving and restoring of window geometry as necessary.
      * @param mode The tile mode (left/right) to give this window.
      * @param keyboard Defines whether to take keyboard cursor into account.
      */
     void setQuickTileMode(QuickTileMode mode, bool keyboard = false);
     QuickTileMode quickTileMode() const {
         return QuickTileMode(m_quickTileMode);
     }
     Layer layer() const override;
     void updateLayer();
 
     void placeIn(const QRect &area);
 
     enum ForceGeometry_t { NormalGeometrySet, ForceGeometrySet };
     virtual void move(int x, int y, ForceGeometry_t force = NormalGeometrySet);
     void move(const QPoint &p, ForceGeometry_t force = NormalGeometrySet);
     virtual void resizeWithChecks(int w, int h, ForceGeometry_t force = NormalGeometrySet) = 0;
     void resizeWithChecks(const QSize& s, ForceGeometry_t force = NormalGeometrySet);
     void keepInArea(QRect area, bool partial = false);
     virtual QSize minSize() const;
     virtual QSize maxSize() const;
     virtual void setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force = NormalGeometrySet) = 0;
     void setFrameGeometry(const QRect &rect, ForceGeometry_t force = NormalGeometrySet);
 
     /**
      * How to resize the window in order to obey constraints (mainly aspect ratios).
      */
     enum SizeMode {
         SizeModeAny,
         SizeModeFixedW, ///< Try not to affect width
         SizeModeFixedH, ///< Try not to affect height
         SizeModeMax ///< Try not to make it larger in either direction
     };
 
     virtual QSize constrainClientSize(const QSize &size, SizeMode mode = SizeModeAny) const;
     QSize constrainFrameSize(const QSize &size, SizeMode mode = SizeModeAny) const;
     QSize adjustedSize() const;
 
     /**
      * Calculates the matching client position for the given frame position @p point.
      */
     virtual QPoint framePosToClientPos(const QPoint &point) const;
     /**
      * Calculates the matching frame position for the given client position @p point.
      */
     virtual QPoint clientPosToFramePos(const QPoint &point) const;
     /**
      * Calculates the matching client size for the given frame size @p size.
      *
      * Notice that size constraints won't be applied.
      *
      * Default implementation returns the frame size with frame margins being excluded.
      */
     virtual QSize frameSizeToClientSize(const QSize &size) const;
     /**
      * Calculates the matching frame size for the given client size @p size.
      *
      * Notice that size constraints won't be applied.
      *
      * Default implementation returns the client size with frame margins being included.
      */
     virtual QSize clientSizeToFrameSize(const QSize &size) const;
     /**
      * Calculates the matching client rect for the given frame rect @p rect.
      *
      * Notice that size constraints won't be applied.
      */
     QRect frameRectToClientRect(const QRect &rect) const;
     /**
      * Calculates the matching frame rect for the given client rect @p rect.
      *
      * Notice that size constraints won't be applied.
      */
     QRect clientRectToFrameRect(const QRect &rect) const;
 
     /**
      * Returns @c true if the Client is being interactively moved; otherwise @c false.
      */
     bool isMove() const {
         return isMoveResize() && moveResizePointerMode() == PositionCenter;
     }
     /**
      * Returns @c true if the Client is being interactively resized; otherwise @c false.
      */
     bool isResize() const {
         return isMoveResize() && moveResizePointerMode() != PositionCenter;
     }
     /**
      * Cursor shape for move/resize mode.
      */
     CursorShape cursor() const {
         return m_moveResize.cursor;
     }
 
     virtual bool hasStrut() const;
 
     void setModal(bool modal);
     bool isModal() const;
 
     /**
      * Determines the mouse command for the given @p button in the current state.
      *
      * The @p handled argument specifies whether the button was handled or not.
      * This value should be used to determine whether the mouse button should be
      * passed to the AbstractClient or being filtered out.
      */
     Options::MouseCommand getMouseCommand(Qt::MouseButton button, bool *handled) const;
     Options::MouseCommand getWheelCommand(Qt::Orientation orientation, bool *handled) const;
 
     // decoration related
     KDecoration2::Decoration *decoration() {
         return m_decoration.decoration;
     }
     const KDecoration2::Decoration *decoration() const {
         return m_decoration.decoration;
     }
     bool isDecorated() const {
         return m_decoration.decoration != nullptr;
     }
     QPointer<Decoration::DecoratedClientImpl> decoratedClient() const;
     void setDecoratedClient(QPointer<Decoration::DecoratedClientImpl> client);
     bool decorationHasAlpha() const;
     void triggerDecorationRepaint();
     virtual void layoutDecorationRects(QRect &left, QRect &top, QRect &right, QRect &bottom) const;
     void processDecorationMove(const QPoint &localPos, const QPoint &globalPos);
     bool processDecorationButtonPress(QMouseEvent *event, bool ignoreMenu = false);
     void processDecorationButtonRelease(QMouseEvent *event);
 
     /**
      * TODO: fix boolean traps
      */
     virtual void updateDecoration(bool check_workspace_pos, bool force = false) = 0;
 
     /**
      * Returns whether the window provides context help or not. If it does,
      * you should show a help menu item or a help button like '?' and call
      * contextHelp() if this is invoked.
      *
      * Default implementation returns @c false.
      * @see showContextHelp;
      */
     virtual bool providesContextHelp() const;
 
     /**
      * Invokes context help on the window. Only works if the window
      * actually provides context help.
      *
      * Default implementation does nothing.
      *
      * @see providesContextHelp()
      */
     virtual void showContextHelp();
 
     QRect inputGeometry() const override;
 
     /**
      * @returns the geometry of the virtual keyboard
      * This geometry is in global coordinates
      */
     QRect virtualKeyboardGeometry() const;
 
     /**
      * Sets the geometry of the virtual keyboard, The window may resize itself in order to make space for the keybaord
      * This geometry is in global coordinates
      */
     void setVirtualKeyboardGeometry(const QRect &geo);
 
     /**
      * Restores the AbstractClient after it had been hidden due to show on screen edge functionality.
      * The AbstractClient also gets raised (e.g. Panel mode windows can cover) and the AbstractClient
      * gets informed in a window specific way that it is shown and raised again.
      */
     virtual void showOnScreenEdge() = 0;
 
     QByteArray desktopFileName() const {
         return m_desktopFileName;
     }
 
     /**
      * Tries to terminate the process of this AbstractClient.
      *
      * Implementing subclasses can perform a windowing system solution for terminating.
      */
     virtual void killWindow() = 0;
     virtual void destroyClient() = 0;
 
     enum class SameApplicationCheck {
         RelaxedForActive = 1 << 0,
         AllowCrossProcesses = 1 << 1
     };
     Q_DECLARE_FLAGS(SameApplicationChecks, SameApplicationCheck)
     static bool belongToSameApplication(const AbstractClient* c1, const AbstractClient* c2, SameApplicationChecks checks = SameApplicationChecks());
 
     bool hasApplicationMenu() const;
     bool applicationMenuActive() const {
         return m_applicationMenuActive;
     }
     void setApplicationMenuActive(bool applicationMenuActive);
 
     QString applicationMenuServiceName() const {
         return m_applicationMenuServiceName;
     }
     QString applicationMenuObjectPath() const {
         return m_applicationMenuObjectPath;
     }
     QString colorScheme() const {
         return m_colorScheme;
     }
 
     /**
      * Request showing the application menu bar
      * @param actionId The DBus menu ID of the action that should be highlighted, 0 for the root menu
      */
     void showApplicationMenu(int actionId);
 
     bool unresponsive() const;
 
     virtual bool isInitialPositionSet() const {
         return false;
     }
 
     /**
      * Default implementation returns @c null.
      * Mostly intended for X11 clients, from EWMH:
      * @verbatim
      * If the WM_TRANSIENT_FOR property is set to None or Root window, the window should be
      * treated as a transient for all other windows in the same group. It has been noted that this
      * is a slight ICCCM violation, but as this behavior is pretty standard for many toolkits and
      * window managers, and is extremely unlikely to break anything, it seems reasonable to document
      * it as standard.
      * @endverbatim
      */
     virtual bool groupTransient() const;
     /**
      * Default implementation returns @c null.
      *
      * Mostly for X11 clients, holds the client group
      */
     virtual const Group *group() const;
     /**
      * Default implementation returns @c null.
      *
      * Mostly for X11 clients, holds the client group
      */
     virtual Group *group();
 
     /**
      * Returns whether this is an internal client.
      *
      * Internal clients are created by KWin and used for special purpose windows,
      * like the task switcher, etc.
      *
      * Default implementation returns @c false.
      */
     virtual bool isInternal() const;
 
     /**
      * Returns whether window rules can be applied to this client.
      *
      * Default implementation returns @c true.
      */
     virtual bool supportsWindowRules() const;
 
 public Q_SLOTS:
     virtual void closeWindow() = 0;
 
 Q_SIGNALS:
     void fullScreenChanged();
     void skipTaskbarChanged();
     void skipPagerChanged();
     void skipSwitcherChanged();
     void iconChanged();
     void activeChanged();
     void keepAboveChanged(bool);
     void keepBelowChanged(bool);
     /**
      * Emitted whenever the demands attention state changes.
      */
     void demandsAttentionChanged();
     void desktopPresenceChanged(KWin::AbstractClient*, int); // to be forwarded by Workspace
     void desktopChanged();
     void x11DesktopIdsChanged();
     void shadeChanged();
     void minimizedChanged();
     void clientMinimized(KWin::AbstractClient* client, bool animate);
     void clientUnminimized(KWin::AbstractClient* client, bool animate);
     void paletteChanged(const QPalette &p);
     void colorSchemeChanged();
     void captionChanged();
     void clientMaximizedStateChanged(KWin::AbstractClient*, MaximizeMode);
     void clientMaximizedStateChanged(KWin::AbstractClient* c, bool h, bool v);
     void transientChanged();
     void modalChanged();
     void quickTileModeChanged();
     void moveResizedChanged();
     void moveResizeCursorChanged(CursorShape);
     void clientStartUserMovedResized(KWin::AbstractClient*);
     void clientStepUserMovedResized(KWin::AbstractClient *, const QRect&);
     void clientFinishUserMovedResized(KWin::AbstractClient*);
     void closeableChanged(bool);
     void minimizeableChanged(bool);
     void shadeableChanged(bool);
     void maximizeableChanged(bool);
     void desktopFileNameChanged();
     void hasApplicationMenuChanged(bool);
     void applicationMenuActiveChanged(bool);
     void unresponsiveChanged(bool);
 
 protected:
     AbstractClient();
     void setFirstInTabBox(bool enable) {
         m_firstInTabBox = enable;
     }
     void setIcon(const QIcon &icon);
     void startAutoRaise();
     void autoRaise();
     /**
      * Whether the window accepts focus.
      * The difference to wantsInput is that the implementation should not check rules and return
      * what the window effectively supports.
      */
     virtual bool acceptsFocus() const = 0;
     /**
      * Called from setActive once the active value got updated, but before the changed signal
      * is emitted.
      *
      * Default implementation does nothing.
      */
     virtual void doSetActive();
     /**
      * Called from setKeepAbove once the keepBelow value got updated, but before the changed signal
      * is emitted.
      *
      * Default implementation does nothing.
      */
     virtual void doSetKeepAbove();
     /**
      * Called from setKeepBelow once the keepBelow value got updated, but before the changed signal
      * is emitted.
      *
      * Default implementation does nothing.
      */
     virtual void doSetKeepBelow();
     /**
      * Called from setDeskop once the desktop value got updated, but before the changed signal
      * is emitted.
      *
      * Default implementation does nothing.
      */
     virtual void doSetDesktop();
     /**
      * Called from @ref minimize and @ref unminimize once the minimized value got updated, but before the
      * changed signal is emitted.
      *
      * Default implementation does nothig.
      */
     virtual void doMinimize();
     virtual bool belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const = 0;
 
     virtual void doSetSkipTaskbar();
     virtual void doSetSkipPager();
     virtual void doSetSkipSwitcher();
     virtual void doSetDemandsAttention();
 
     void setupWindowManagementInterface();
     void destroyWindowManagementInterface();
 
     void updateColorScheme(QString path);
     virtual void updateColorScheme() = 0;
 
     void setTransientFor(AbstractClient *transientFor);
     /**
      * Just removes the @p cl from the transients without any further checks.
      */
     void removeTransientFromList(AbstractClient* cl);
 
     Layer belongsToLayer() const;
     virtual bool belongsToDesktop() const;
     void invalidateLayer();
     bool isActiveFullScreen() const;
     virtual Layer layerForDock() const;
 
     // electric border / quick tiling
     void setElectricBorderMode(QuickTileMode mode);
     QuickTileMode electricBorderMode() const {
         return m_electricMode;
     }
     void setElectricBorderMaximizing(bool maximizing);
     bool isElectricBorderMaximizing() const {
         return m_electricMaximizing;
     }
     QRect electricBorderMaximizeGeometry(QPoint pos, int desktop);
     void updateQuickTileMode(QuickTileMode newMode) {
         m_quickTileMode = newMode;
     }
 
     KWayland::Server::PlasmaWindowInterface *windowManagementInterface() const {
         return m_windowManagementInterface;
     }
 
     // geometry handling
     void checkOffscreenPosition(QRect *geom, const QRect &screenArea);
     int borderLeft() const;
     int borderRight() const;
     int borderTop() const;
     int borderBottom() const;
     virtual void changeMaximize(bool horizontal, bool vertical, bool adjust);
     void setGeometryRestore(const QRect &rect);
 
     /**
      * Called from move after updating the geometry. Can be reimplemented to perform specific tasks.
      * The base implementation does nothing.
      */
     virtual void doMove(int x, int y);
     void blockGeometryUpdates(bool block);
     void blockGeometryUpdates();
     void unblockGeometryUpdates();
     bool areGeometryUpdatesBlocked() const;
     enum PendingGeometry_t {
         PendingGeometryNone,
         PendingGeometryNormal,
         PendingGeometryForced
     };
     PendingGeometry_t pendingGeometryUpdate() const;
     void setPendingGeometryUpdate(PendingGeometry_t update);
     QRect bufferGeometryBeforeUpdateBlocking() const;
     QRect frameGeometryBeforeUpdateBlocking() const;
     void updateGeometryBeforeUpdateBlocking();
     /**
      * Schedules a repaint for the visibleRect before and after a
      * geometry update. The current visibleRect is stored for the
      * next time this method is called as the before geometry.
      */
     void addRepaintDuringGeometryUpdates();
 
     /**
      * @returns whether the Client is currently in move resize mode
      */
     bool isMoveResize() const {
         return m_moveResize.enabled;
     }
     /**
      * Sets whether the Client is in move resize mode to @p enabled.
      */
     void setMoveResize(bool enabled) {
         m_moveResize.enabled = enabled;
     }
     /**
      * @returns whether the move resize mode is unrestricted.
      */
     bool isUnrestrictedMoveResize() const {
         return m_moveResize.unrestricted;
     }
     /**
      * Sets whether move resize mode is unrestricted to @p set.
      */
     void setUnrestrictedMoveResize(bool set) {
         m_moveResize.unrestricted = set;
     }
     QPoint moveOffset() const {
         return m_moveResize.offset;
     }
     void setMoveOffset(const QPoint &offset) {
         m_moveResize.offset = offset;
     }
     QPoint invertedMoveOffset() const {
         return m_moveResize.invertedOffset;
     }
     void setInvertedMoveOffset(const QPoint &offset) {
         m_moveResize.invertedOffset = offset;
     }
     QRect initialMoveResizeGeometry() const {
         return m_moveResize.initialGeometry;
     }
     /**
      * Sets the initial move resize geometry to the current geometry.
      */
     void updateInitialMoveResizeGeometry();
     QRect moveResizeGeometry() const {
         return m_moveResize.geometry;
     }
     void setMoveResizeGeometry(const QRect &geo) {
         m_moveResize.geometry = geo;
     }
     Position moveResizePointerMode() const {
         return m_moveResize.pointer;
     }
     void setMoveResizePointerMode(Position mode) {
         m_moveResize.pointer = mode;
     }
     bool isMoveResizePointerButtonDown() const {
         return m_moveResize.buttonDown;
     }
     void setMoveResizePointerButtonDown(bool down) {
         m_moveResize.buttonDown = down;
     }
     int moveResizeStartScreen() const {
         return m_moveResize.startScreen;
     }
     void checkUnrestrictedMoveResize();
     /**
      * Sets an appropriate cursor shape for the logical mouse position.
      */
     void updateCursor();
     void startDelayedMoveResize();
     void stopDelayedMoveResize();
     bool startMoveResize();
     /**
      * Called from startMoveResize.
      *
      * Implementing classes should return @c false if starting move resize should
      * get aborted. In that case startMoveResize will also return @c false.
      *
      * Base implementation returns @c true.
      */
     virtual bool doStartMoveResize();
     void finishMoveResize(bool cancel);
     /**
      * Leaves the move resize mode.
      *
      * Inheriting classes must invoke the base implementation which
      * ensures that the internal mode is properly ended.
      */
     virtual void leaveMoveResize();
     virtual void positionGeometryTip();
     void performMoveResize();
     /**
      * Called from performMoveResize() after actually performing the change of geometry.
      * Implementing subclasses can perform windowing system specific handling here.
      *
      * Default implementation does nothing.
      */
     virtual void doPerformMoveResize();
     /*
      * Checks if the mouse cursor is near the edge of the screen and if so
      * activates quick tiling or maximization
      */
     void checkQuickTilingMaximizationZones(int xroot, int yroot);
     /**
      * Whether a sync request is still pending.
      * Default implementation returns @c false.
      */
     virtual bool isWaitingForMoveResizeSync() const;
     /**
      * Called during handling a resize. Implementing subclasses can use this
      * method to perform windowing system specific syncing.
      *
      * Default implementation does nothing.
      */
     virtual void doResizeSync();
     void handleMoveResize(int x, int y, int x_root, int y_root);
     void handleMoveResize(const QPoint &local, const QPoint &global);
     void dontMoveResize();
 
     virtual QSize resizeIncrements() const;
 
     /**
      * Returns the position depending on the Decoration's section under mouse.
      * If no decoration it returns PositionCenter.
      */
     Position mousePosition() const;
 
     static bool haveResizeEffect() {
         return s_haveResizeEffect;
     }
     static void updateHaveResizeEffect();
     static void resetHaveResizeEffect() {
         s_haveResizeEffect = false;
     }
 
     void setDecoration(KDecoration2::Decoration *decoration) {
         m_decoration.decoration = decoration;
     }
+    virtual void createDecoration(const QRect &oldGeometry);
     virtual void destroyDecoration();
     void startDecorationDoubleClickTimer();
     void invalidateDecorationDoubleClickTimer();
 
     void setDesktopFileName(QByteArray name);
     QString iconFromDesktopFile() const;
 
     void updateApplicationMenuServiceName(const QString &serviceName);
     void updateApplicationMenuObjectPath(const QString &objectPath);
 
     void setUnresponsive(bool unresponsive);
 
     virtual void setShortcutInternal();
     QString shortcutCaptionSuffix() const;
     virtual void updateCaption() = 0;
 
     /**
      * Looks for another AbstractClient with same captionNormal and captionSuffix.
      * If no such AbstractClient exists @c nullptr is returned.
      */
     AbstractClient *findClientWithSameCaption() const;
 
     void finishWindowRules();
     void discardTemporaryRules();
 
     bool tabTo(AbstractClient *other, bool behind, bool activate);
 
 private:
     void handlePaletteChange();
     QSharedPointer<TabBox::TabBoxClientImpl> m_tabBoxClient;
     bool m_firstInTabBox = false;
     bool m_skipTaskbar = false;
     /**
      * Unaffected by KWin
      */
     bool m_originalSkipTaskbar = false;
     bool m_skipPager = false;
     bool m_skipSwitcher = false;
     QIcon m_icon;
     bool m_active = false;
     bool m_keepAbove = false;
     bool m_keepBelow = false;
     bool m_demandsAttention = false;
     bool m_minimized = false;
     QTimer *m_autoRaiseTimer = nullptr;
     QVector <VirtualDesktop *> m_desktops;
 
     QString m_colorScheme;
     std::shared_ptr<Decoration::DecorationPalette> m_palette;
     static QHash<QString, std::weak_ptr<Decoration::DecorationPalette>> s_palettes;
     static std::shared_ptr<Decoration::DecorationPalette> s_defaultPalette;
 
     KWayland::Server::PlasmaWindowInterface *m_windowManagementInterface = nullptr;
 
     AbstractClient *m_transientFor = nullptr;
     QList<AbstractClient*> m_transients;
     bool m_modal = false;
     Layer m_layer = UnknownLayer;
 
     // electric border/quick tiling
     QuickTileMode m_electricMode = QuickTileFlag::None;
     bool m_electricMaximizing = false;
     // The quick tile mode of this window.
     int m_quickTileMode = int(QuickTileFlag::None);
     QTimer *m_electricMaximizingDelay = nullptr;
 
     // geometry
     int m_blockGeometryUpdates = 0; // > 0 = New geometry is remembered, but not actually set
     PendingGeometry_t m_pendingGeometryUpdate = PendingGeometryNone;
     friend class GeometryUpdatesBlocker;
     QRect m_visibleRectBeforeGeometryUpdate;
     QRect m_bufferGeometryBeforeUpdateBlocking;
     QRect m_frameGeometryBeforeUpdateBlocking;
     QRect m_virtualKeyboardGeometry;
     QRect m_keyboardGeometryRestore;
     QRect m_maximizeGeometryRestore;
 
     struct {
         bool enabled = false;
         bool unrestricted = false;
         QPoint offset;
         QPoint invertedOffset;
         QRect initialGeometry;
         QRect geometry;
         Position pointer = PositionCenter;
         bool buttonDown = false;
         CursorShape cursor = Qt::ArrowCursor;
         int startScreen = 0;
         QTimer *delayedTimer = nullptr;
     } m_moveResize;
 
     struct {
         KDecoration2::Decoration *decoration = nullptr;
         QPointer<Decoration::DecoratedClientImpl> client;
         QElapsedTimer doubleClickTimer;
     } m_decoration;
     QByteArray m_desktopFileName;
 
     bool m_applicationMenuActive = false;
     QString m_applicationMenuServiceName;
     QString m_applicationMenuObjectPath;
 
     bool m_unresponsive = false;
 
     QKeySequence _shortcut;
 
     WindowRules m_rules;
 
     static bool s_haveResizeEffect;
 };
 
 /**
  * Helper for AbstractClient::blockGeometryUpdates() being called in pairs (true/false)
  */
 class GeometryUpdatesBlocker
 {
 public:
     explicit GeometryUpdatesBlocker(AbstractClient* c)
         : cl(c) {
         cl->blockGeometryUpdates(true);
     }
     ~GeometryUpdatesBlocker() {
         cl->blockGeometryUpdates(false);
     }
 
 private:
     AbstractClient* cl;
 };
 
 inline void AbstractClient::move(const QPoint& p, ForceGeometry_t force)
 {
     move(p.x(), p.y(), force);
 }
 
 inline void AbstractClient::resizeWithChecks(const QSize& s, AbstractClient::ForceGeometry_t force)
 {
     resizeWithChecks(s.width(), s.height(), force);
 }
 
 inline void AbstractClient::setFrameGeometry(const QRect &rect, ForceGeometry_t force)
 {
     setFrameGeometry(rect.x(), rect.y(), rect.width(), rect.height(), force);
 }
 
 inline const QList<AbstractClient*>& AbstractClient::transients() const
 {
     return m_transients;
 }
 
 inline bool AbstractClient::areGeometryUpdatesBlocked() const
 {
     return m_blockGeometryUpdates != 0;
 }
 
 inline void AbstractClient::blockGeometryUpdates()
 {
     m_blockGeometryUpdates++;
 }
 
 inline void AbstractClient::unblockGeometryUpdates()
 {
     m_blockGeometryUpdates--;
 }
 
 inline AbstractClient::PendingGeometry_t AbstractClient::pendingGeometryUpdate() const
 {
     return m_pendingGeometryUpdate;
 }
 
 inline void AbstractClient::setPendingGeometryUpdate(PendingGeometry_t update)
 {
     m_pendingGeometryUpdate = update;
 }
 
 }
 
 Q_DECLARE_METATYPE(KWin::AbstractClient*)
 Q_DECLARE_METATYPE(QList<KWin::AbstractClient*>)
 Q_DECLARE_OPERATORS_FOR_FLAGS(KWin::AbstractClient::SameApplicationChecks)
 
 #endif
diff --git a/internal_client.cpp b/internal_client.cpp
index 30f7303fe..6ca3d2b26 100644
--- a/internal_client.cpp
+++ b/internal_client.cpp
@@ -1,639 +1,602 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2019 Martin Flöser <mgraesslin@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 #include "internal_client.h"
 #include "decorations/decorationbridge.h"
 #include "deleted.h"
 #include "workspace.h"
 
 #include <KDecoration2/Decoration>
 
 #include <QOpenGLFramebufferObject>
 #include <QWindow>
 
 Q_DECLARE_METATYPE(NET::WindowType)
 
 static const QByteArray s_skipClosePropertyName = QByteArrayLiteral("KWIN_SKIP_CLOSE_ANIMATION");
 static const QByteArray s_shadowEnabledPropertyName = QByteArrayLiteral("kwin_shadow_enabled");
 
 namespace KWin
 {
 
 InternalClient::InternalClient(QWindow *window)
     : m_internalWindow(window)
     , m_clientSize(window->size())
     , m_windowId(window->winId())
     , m_internalWindowFlags(window->flags())
 {
     connect(m_internalWindow, &QWindow::xChanged, this, &InternalClient::updateInternalWindowGeometry);
     connect(m_internalWindow, &QWindow::yChanged, this, &InternalClient::updateInternalWindowGeometry);
     connect(m_internalWindow, &QWindow::widthChanged, this, &InternalClient::updateInternalWindowGeometry);
     connect(m_internalWindow, &QWindow::heightChanged, this, &InternalClient::updateInternalWindowGeometry);
     connect(m_internalWindow, &QWindow::windowTitleChanged, this, &InternalClient::setCaption);
     connect(m_internalWindow, &QWindow::opacityChanged, this, &InternalClient::setOpacity);
     connect(m_internalWindow, &QWindow::destroyed, this, &InternalClient::destroyClient);
 
     connect(this, &InternalClient::opacityChanged, this, &InternalClient::addRepaintFull);
 
     const QVariant windowType = m_internalWindow->property("kwin_windowType");
     if (!windowType.isNull()) {
         m_windowType = windowType.value<NET::WindowType>();
     }
 
     setCaption(m_internalWindow->title());
     setIcon(QIcon::fromTheme(QStringLiteral("kwin")));
     setOnAllDesktops(true);
     setOpacity(m_internalWindow->opacity());
     setSkipCloseAnimation(m_internalWindow->property(s_skipClosePropertyName).toBool());
 
     // Create scene window, effect window, and update server-side shadow.
     setupCompositing();
     updateColorScheme();
 
     blockGeometryUpdates(true);
     commitGeometry(m_internalWindow->geometry());
     updateDecoration(true);
     setFrameGeometry(clientRectToFrameRect(m_internalWindow->geometry()));
     setGeometryRestore(frameGeometry());
     blockGeometryUpdates(false);
 
     m_internalWindow->installEventFilter(this);
 }
 
 InternalClient::~InternalClient()
 {
 }
 
 bool InternalClient::eventFilter(QObject *watched, QEvent *event)
 {
     if (watched == m_internalWindow && event->type() == QEvent::DynamicPropertyChange) {
         QDynamicPropertyChangeEvent *pe = static_cast<QDynamicPropertyChangeEvent*>(event);
         if (pe->propertyName() == s_skipClosePropertyName) {
             setSkipCloseAnimation(m_internalWindow->property(s_skipClosePropertyName).toBool());
         }
         if (pe->propertyName() == s_shadowEnabledPropertyName) {
             updateShadow();
         }
         if (pe->propertyName() == "kwin_windowType") {
             m_windowType = m_internalWindow->property("kwin_windowType").value<NET::WindowType>();
             workspace()->updateClientArea();
         }
     }
     return false;
 }
 
 QRect InternalClient::bufferGeometry() const
 {
     return frameGeometry() - frameMargins();
 }
 
 QStringList InternalClient::activities() const
 {
     return QStringList();
 }
 
 void InternalClient::blockActivityUpdates(bool b)
 {
     Q_UNUSED(b)
 
     // Internal clients do not support activities.
 }
 
 qreal InternalClient::bufferScale() const
 {
     if (m_internalWindow) {
         return m_internalWindow->devicePixelRatio();
     }
     return 1;
 }
 
 QString InternalClient::captionNormal() const
 {
     return m_captionNormal;
 }
 
 QString InternalClient::captionSuffix() const
 {
     return m_captionSuffix;
 }
 
 QPoint InternalClient::clientContentPos() const
 {
     return -1 * clientPos();
 }
 
 QSize InternalClient::clientSize() const
 {
     return m_clientSize;
 }
 
 QSize InternalClient::minSize() const
 {
     return m_internalWindow->minimumSize();
 }
 
 QSize InternalClient::maxSize() const
 {
     return m_internalWindow->maximumSize();
 }
 
 void InternalClient::debug(QDebug &stream) const
 {
     stream.nospace() << "\'InternalClient:" << m_internalWindow << "\'";
 }
 
 QRect InternalClient::transparentRect() const
 {
     return QRect();
 }
 
 NET::WindowType InternalClient::windowType(bool direct, int supported_types) const
 {
     Q_UNUSED(direct)
     Q_UNUSED(supported_types)
     return m_windowType;
 }
 
 double InternalClient::opacity() const
 {
     return m_opacity;
 }
 
 void InternalClient::setOpacity(double opacity)
 {
     if (m_opacity == opacity) {
         return;
     }
 
     const double oldOpacity = m_opacity;
     m_opacity = opacity;
 
     emit opacityChanged(this, oldOpacity);
 }
 
 void InternalClient::killWindow()
 {
     // We don't kill our internal windows.
 }
 
 bool InternalClient::isPopupWindow() const
 {
     if (AbstractClient::isPopupWindow()) {
         return true;
     }
     return m_internalWindowFlags.testFlag(Qt::Popup);
 }
 
 QByteArray InternalClient::windowRole() const
 {
     return QByteArray();
 }
 
 void InternalClient::closeWindow()
 {
     if (m_internalWindow) {
         m_internalWindow->hide();
     }
 }
 
 bool InternalClient::isCloseable() const
 {
     return true;
 }
 
 bool InternalClient::isMovable() const
 {
     return true;
 }
 
 bool InternalClient::isMovableAcrossScreens() const
 {
     return true;
 }
 
 bool InternalClient::isResizable() const
 {
     return true;
 }
 
 bool InternalClient::noBorder() const
 {
     return m_userNoBorder || m_internalWindowFlags.testFlag(Qt::FramelessWindowHint) || m_internalWindowFlags.testFlag(Qt::Popup);
 }
 
 bool InternalClient::userCanSetNoBorder() const
 {
     return !m_internalWindowFlags.testFlag(Qt::FramelessWindowHint) || m_internalWindowFlags.testFlag(Qt::Popup);
 }
 
 bool InternalClient::wantsInput() const
 {
     return false;
 }
 
 bool InternalClient::isInternal() const
 {
     return true;
 }
 
 bool InternalClient::isLockScreen() const
 {
     if (m_internalWindow) {
         return m_internalWindow->property("org_kde_ksld_emergency").toBool();
     }
     return false;
 }
 
 bool InternalClient::isInputMethod() const
 {
     if (m_internalWindow) {
         return m_internalWindow->property("__kwin_input_method").toBool();
     }
     return false;
 }
 
 bool InternalClient::isOutline() const
 {
     if (m_internalWindow) {
         return m_internalWindow->property("__kwin_outline").toBool();
     }
     return false;
 }
 
 quint32 InternalClient::windowId() const
 {
     return m_windowId;
 }
 
 bool InternalClient::isShown(bool shaded_is_shown) const
 {
     Q_UNUSED(shaded_is_shown)
 
     return readyForPainting();
 }
 
 bool InternalClient::isHiddenInternal() const
 {
     return false;
 }
 
 void InternalClient::hideClient(bool hide)
 {
     Q_UNUSED(hide)
 }
 
 void InternalClient::resizeWithChecks(int w, int h, ForceGeometry_t force)
 {
     Q_UNUSED(force)
     if (!m_internalWindow) {
         return;
     }
     QRect area = workspace()->clientArea(WorkArea, this);
     // don't allow growing larger than workarea
     if (w > area.width()) {
         w = area.width();
     }
     if (h > area.height()) {
         h = area.height();
     }
     setFrameGeometry(QRect(x(), y(), w, h));
 }
 
 void InternalClient::setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force)
 {
     const QRect rect(x, y, w, h);
 
     if (areGeometryUpdatesBlocked()) {
         m_frameGeometry = rect;
         if (pendingGeometryUpdate() == PendingGeometryForced) {
             // Maximum, nothing needed.
         } else if (force == ForceGeometrySet) {
             setPendingGeometryUpdate(PendingGeometryForced);
         } else {
             setPendingGeometryUpdate(PendingGeometryNormal);
         }
         return;
     }
 
     if (pendingGeometryUpdate() != PendingGeometryNone) {
         // Reset geometry to the one before blocking, so that we can compare properly.
         m_frameGeometry = frameGeometryBeforeUpdateBlocking();
     }
 
     if (m_frameGeometry == rect) {
         return;
     }
 
     const QRect newClientGeometry = frameRectToClientRect(rect);
 
     if (m_clientSize == newClientGeometry.size()) {
         commitGeometry(rect);
     } else {
         requestGeometry(rect);
     }
 }
 
 bool InternalClient::supportsWindowRules() const
 {
     return false;
 }
 
 AbstractClient *InternalClient::findModal(bool allow_itself)
 {
     Q_UNUSED(allow_itself)
     return nullptr;
 }
 
 void InternalClient::setOnAllActivities(bool set)
 {
     Q_UNUSED(set)
 
     // Internal clients do not support activities.
 }
 
 void InternalClient::takeFocus()
 {
 }
 
 void InternalClient::setNoBorder(bool set)
 {
     if (!userCanSetNoBorder()) {
         return;
     }
     if (m_userNoBorder == set) {
         return;
     }
     m_userNoBorder = set;
     updateDecoration(true);
 }
 
 void InternalClient::updateDecoration(bool check_workspace_pos, bool force)
 {
     if (!force && isDecorated() == !noBorder()) {
         return;
     }
 
     const QRect oldFrameGeometry = frameGeometry();
     const QRect oldClientGeometry = oldFrameGeometry - frameMargins();
 
     GeometryUpdatesBlocker blocker(this);
 
     if (force) {
         destroyDecoration();
     }
 
     if (!noBorder()) {
         createDecoration(oldClientGeometry);
     } else {
         destroyDecoration();
     }
 
     updateShadow();
 
     if (check_workspace_pos) {
         checkWorkspacePosition(oldFrameGeometry, -2, oldClientGeometry);
     }
 }
 
 void InternalClient::updateColorScheme()
 {
     AbstractClient::updateColorScheme(QString());
 }
 
 void InternalClient::showOnScreenEdge()
 {
 }
 
 void InternalClient::destroyClient()
 {
     if (isMoveResize()) {
         leaveMoveResize();
     }
 
     Deleted *deleted = Deleted::create(this);
     emit windowClosed(this, deleted);
 
     destroyDecoration();
 
     workspace()->removeInternalClient(this);
 
     deleted->unrefWindow();
     m_internalWindow = nullptr;
 
     delete this;
 }
 
 void InternalClient::present(const QSharedPointer<QOpenGLFramebufferObject> fbo)
 {
     Q_ASSERT(m_internalImage.isNull());
 
     const QSize bufferSize = fbo->size() / bufferScale();
 
     commitGeometry(QRect(pos(), clientSizeToFrameSize(bufferSize)));
     markAsMapped();
 
     if (m_internalFBO != fbo) {
         discardWindowPixmap();
         m_internalFBO = fbo;
     }
 
     setDepth(32);
     addDamageFull();
     addRepaintFull();
 }
 
 void InternalClient::present(const QImage &image, const QRegion &damage)
 {
     Q_ASSERT(m_internalFBO.isNull());
 
     const QSize bufferSize = image.size() / bufferScale();
 
     commitGeometry(QRect(pos(), clientSizeToFrameSize(bufferSize)));
     markAsMapped();
 
     if (m_internalImage.size() != image.size()) {
         discardWindowPixmap();
     }
 
     m_internalImage = image;
 
     setDepth(32);
     addDamage(damage);
     addRepaint(damage.translated(borderLeft(), borderTop()));
 }
 
 QWindow *InternalClient::internalWindow() const
 {
     return m_internalWindow;
 }
 
 bool InternalClient::acceptsFocus() const
 {
     return false;
 }
 
 bool InternalClient::belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const
 {
     Q_UNUSED(checks)
 
     return qobject_cast<const InternalClient *>(other) != nullptr;
 }
 
-void InternalClient::destroyDecoration()
-{
-    if (!isDecorated()) {
-        return;
-    }
-
-    const QRect clientGeometry = frameRectToClientRect(frameGeometry());
-    AbstractClient::destroyDecoration();
-    setFrameGeometry(clientGeometry);
-}
-
 void InternalClient::doMove(int x, int y)
 {
     Q_UNUSED(x)
     Q_UNUSED(y)
 
     syncGeometryToInternalWindow();
 }
 
 void InternalClient::doResizeSync()
 {
     requestGeometry(moveResizeGeometry());
 }
 
 void InternalClient::updateCaption()
 {
     const QString oldSuffix = m_captionSuffix;
     const auto shortcut = shortcutCaptionSuffix();
     m_captionSuffix = shortcut;
     if ((!isSpecialWindow() || isToolbar()) && findClientWithSameCaption()) {
         int i = 2;
         do {
             m_captionSuffix = shortcut + QLatin1String(" <") + QString::number(i) + QLatin1Char('>');
             i++;
         } while (findClientWithSameCaption());
     }
     if (m_captionSuffix != oldSuffix) {
         emit captionChanged();
     }
 }
 
-void InternalClient::createDecoration(const QRect &rect)
-{
-    KDecoration2::Decoration *decoration = Decoration::DecorationBridge::self()->createDecoration(this);
-    if (decoration) {
-        QMetaObject::invokeMethod(decoration, "update", Qt::QueuedConnection);
-        connect(decoration, &KDecoration2::Decoration::shadowChanged, this, &Toplevel::updateShadow);
-        connect(decoration, &KDecoration2::Decoration::bordersChanged, this,
-            [this]() {
-                GeometryUpdatesBlocker blocker(this);
-                const QRect oldGeometry = frameGeometry();
-                if (!isShade()) {
-                    checkWorkspacePosition(oldGeometry);
-                }
-                emit geometryShapeChanged(this, oldGeometry);
-            }
-        );
-    }
-
-    const QRect oldFrameGeometry = frameGeometry();
-
-    setDecoration(decoration);
-    setFrameGeometry(clientRectToFrameRect(rect));
-
-    emit geometryShapeChanged(this, oldFrameGeometry);
-}
-
 void InternalClient::requestGeometry(const QRect &rect)
 {
     if (m_internalWindow) {
         m_internalWindow->setGeometry(frameRectToClientRect(rect));
     }
 }
 
 void InternalClient::commitGeometry(const QRect &rect)
 {
     if (m_frameGeometry == rect && pendingGeometryUpdate() == PendingGeometryNone) {
         return;
     }
 
     m_frameGeometry = rect;
 
     m_clientSize = frameRectToClientRect(frameGeometry()).size();
 
     addWorkspaceRepaint(visibleRect());
     syncGeometryToInternalWindow();
 
     if (frameGeometryBeforeUpdateBlocking() != frameGeometry()) {
         emit frameGeometryChanged(this, frameGeometryBeforeUpdateBlocking());
     }
     emit geometryShapeChanged(this, frameGeometryBeforeUpdateBlocking());
     updateGeometryBeforeUpdateBlocking();
 
     if (isResize()) {
         performMoveResize();
     }
 }
 
 void InternalClient::setCaption(const QString &caption)
 {
     if (m_captionNormal == caption) {
         return;
     }
 
     m_captionNormal = caption;
 
     const QString oldCaptionSuffix = m_captionSuffix;
     updateCaption();
 
     if (m_captionSuffix == oldCaptionSuffix) {
         emit captionChanged();
     }
 }
 
 void InternalClient::markAsMapped()
 {
     if (!ready_for_painting) {
         setReadyForPainting();
         workspace()->addInternalClient(this);
     }
 }
 
 void InternalClient::syncGeometryToInternalWindow()
 {
     if (m_internalWindow->geometry() == frameRectToClientRect(frameGeometry())) {
         return;
     }
 
     QTimer::singleShot(0, this, [this] { requestGeometry(frameGeometry()); });
 }
 
 void InternalClient::updateInternalWindowGeometry()
 {
     if (isMoveResize()) {
         return;
     }
 
     commitGeometry(clientRectToFrameRect(m_internalWindow->geometry()));
 }
 
 }
diff --git a/internal_client.h b/internal_client.h
index 8d9e7ca6a..b4d08ab41 100644
--- a/internal_client.h
+++ b/internal_client.h
@@ -1,120 +1,118 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2019 Martin Flöser <mgraesslin@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 #pragma once
 
 #include "abstract_client.h"
 
 namespace KWin
 {
 
 class KWIN_EXPORT InternalClient : public AbstractClient
 {
     Q_OBJECT
 
 public:
     explicit InternalClient(QWindow *window);
     ~InternalClient() override;
 
     bool eventFilter(QObject *watched, QEvent *event) override;
 
     QRect bufferGeometry() const override;
     QStringList activities() const override;
     void blockActivityUpdates(bool b = true) override;
     qreal bufferScale() const override;
     QString captionNormal() const override;
     QString captionSuffix() const override;
     QPoint clientContentPos() const override;
     QSize clientSize() const override;
     QSize minSize() const override;
     QSize maxSize() const override;
     void debug(QDebug &stream) const override;
     QRect transparentRect() const override;
     NET::WindowType windowType(bool direct = false, int supported_types = 0) const override;
     double opacity() const override;
     void setOpacity(double opacity) override;
     void killWindow() override;
     bool isPopupWindow() const override;
     QByteArray windowRole() const override;
     void closeWindow() override;
     bool isCloseable() const override;
     bool isMovable() const override;
     bool isMovableAcrossScreens() const override;
     bool isResizable() const override;
     bool noBorder() const override;
     bool userCanSetNoBorder() const override;
     bool wantsInput() const override;
     bool isInternal() const override;
     bool isLockScreen() const override;
     bool isInputMethod() const override;
     bool isOutline() const override;
     quint32 windowId() const override;
     bool isShown(bool shaded_is_shown) const override;
     bool isHiddenInternal() const override;
     void hideClient(bool hide) override;
     using AbstractClient::resizeWithChecks;
     void resizeWithChecks(int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     using AbstractClient::setFrameGeometry;
     void setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     bool supportsWindowRules() const override;
     AbstractClient *findModal(bool allow_itself = false) override;
     void setOnAllActivities(bool set) override;
     void takeFocus() override;
     void setNoBorder(bool set) override;
     void updateDecoration(bool check_workspace_pos, bool force = false) override;
     void updateColorScheme() override;
     void showOnScreenEdge() override;
     void destroyClient() override;
 
     void present(const QSharedPointer<QOpenGLFramebufferObject> fbo);
     void present(const QImage &image, const QRegion &damage);
     QWindow *internalWindow() const;
 
 protected:
     bool acceptsFocus() const override;
     bool belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const override;
-    void destroyDecoration() override;
     void doMove(int x, int y) override;
     void doResizeSync() override;
     void updateCaption() override;
 
 private:
-    void createDecoration(const QRect &rect);
     void requestGeometry(const QRect &rect);
     void commitGeometry(const QRect &rect);
     void setCaption(const QString &caption);
     void markAsMapped();
     void syncGeometryToInternalWindow();
     void updateInternalWindowGeometry();
 
     QWindow *m_internalWindow = nullptr;
     QSize m_clientSize = QSize(0, 0);
     QString m_captionNormal;
     QString m_captionSuffix;
     double m_opacity = 1.0;
     NET::WindowType m_windowType = NET::Normal;
     quint32 m_windowId = 0;
     Qt::WindowFlags m_internalWindowFlags = Qt::WindowFlags();
     bool m_userNoBorder = false;
 
     Q_DISABLE_COPY(InternalClient)
 };
 
 }
diff --git a/x11client.h b/x11client.h
index 811345fa8..38e85517e 100644
--- a/x11client.h
+++ b/x11client.h
@@ -1,692 +1,692 @@
 /********************************************************************
  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/>.
 *********************************************************************/
 
 #pragma once
 
 // kwin
 #include "options.h"
 #include "rules.h"
 #include "abstract_client.h"
 #include "xcbutils.h"
 // Qt
 #include <QElapsedTimer>
 #include <QFlags>
 #include <QPointer>
 #include <QPixmap>
 #include <QWindow>
 // X
 #include <xcb/sync.h>
 
 // TODO: Cleanup the order of things in this .h file
 
 class QTimer;
 class KStartupInfoData;
 class KStartupInfoId;
 
 namespace KWin
 {
 
 
 /**
  * @brief Defines Predicates on how to search for a Client.
  *
  * Used by Workspace::findClient.
  */
 enum class Predicate {
     WindowMatch,
     WrapperIdMatch,
     FrameIdMatch,
     InputIdMatch
 };
 
 class KWIN_EXPORT X11Client : public AbstractClient
 {
     Q_OBJECT
     /**
      * By how much the window wishes to grow/shrink at least. Usually QSize(1,1).
      * MAY BE DISOBEYED BY THE WM! It's only for information, do NOT rely on it at all.
      * The value is evaluated each time the getter is called.
      * Because of that no changed signal is provided.
      */
     Q_PROPERTY(QSize basicUnit READ basicUnit)
     /**
      * A client can block compositing. That is while the Client is alive and the state is set,
      * Compositing is suspended and is resumed when there are no Clients blocking compositing any
      * more.
      *
      * This is actually set by a window property, unfortunately not used by the target application
      * group. For convenience it's exported as a property to the scripts.
      *
      * Use with care!
      */
     Q_PROPERTY(bool blocksCompositing READ isBlockingCompositing WRITE setBlockingCompositing NOTIFY blockingCompositingChanged)
     /**
      * Whether the Client uses client side window decorations.
      * Only GTK+ are detected.
      */
     Q_PROPERTY(bool clientSideDecorated READ isClientSideDecorated NOTIFY clientSideDecoratedChanged)
 public:
     explicit X11Client();
     xcb_window_t wrapperId() const;
     xcb_window_t inputId() const { return m_decoInputExtent; }
     xcb_window_t frameId() const override;
 
     QRect inputGeometry() const override;
     QRect bufferGeometry() const override;
     QMargins bufferMargins() const override;
 
     QPoint framePosToClientPos(const QPoint &point) const override;
     QPoint clientPosToFramePos(const QPoint &point) const override;
     QSize frameSizeToClientSize(const QSize &size) const override;
     QSize clientSizeToFrameSize(const QSize &size) const override;
     QRect frameRectToBufferRect(const QRect &rect) const;
 
     QMatrix4x4 inputTransformation() const override;
 
     bool isTransient() const override;
     bool groupTransient() const override;
     bool wasOriginallyGroupTransient() const;
     QList<AbstractClient*> mainClients() const override; // Call once before loop , is not indirect
     bool hasTransient(const AbstractClient* c, bool indirect) const override;
     void checkTransient(xcb_window_t w);
     AbstractClient* findModal(bool allow_itself = false) override;
     const Group* group() const override;
     Group* group() override;
     void checkGroup(Group* gr = nullptr, bool force = false);
     void changeClientLeaderGroup(Group* gr);
     void updateWindowRules(Rules::Types selection) override;
     void applyWindowRules() override;
     void updateFullscreenMonitors(NETFullscreenMonitors topology);
 
     bool hasNETSupport() const;
 
     QSize minSize() const override;
     QSize maxSize() const override;
     QSize basicUnit() const;
     QSize clientSize() const override;
     QPoint inputPos() const { return input_offset; } // Inside of geometry()
 
     bool windowEvent(xcb_generic_event_t *e);
     NET::WindowType windowType(bool direct = false, int supported_types = 0) const override;
 
     bool manage(xcb_window_t w, bool isMapped);
     void releaseWindow(bool on_shutdown = false);
     void destroyClient() override;
 
     QStringList activities() const override;
     void setOnActivity(const QString &activity, bool enable);
     void setOnAllActivities(bool set) override;
     void setOnActivities(QStringList newActivitiesList) override;
     void updateActivities(bool includeTransients);
     void blockActivityUpdates(bool b = true) override;
 
     /// Is not minimized and not hidden. I.e. normally visible on some virtual desktop.
     bool isShown(bool shaded_is_shown) const override;
     bool isHiddenInternal() const override; // For compositing
 
     ShadeMode shadeMode() const override; // Prefer isShade()
     void setShade(ShadeMode mode) override;
     bool isShadeable() const override;
 
     bool isMaximizable() const override;
     MaximizeMode maximizeMode() const override;
 
     bool isMinimizable() const override;
     QRect iconGeometry() const override;
 
     bool isFullScreenable() const override;
     void setFullScreen(bool set, bool user = true) override;
     bool isFullScreen() const override;
     bool userCanSetFullScreen() const override;
     QRect geometryFSRestore() const {
         return geom_fs_restore;     // only for session saving
     }
     int fullScreenMode() const {
         return m_fullscreenMode;    // only for session saving
     }
 
     bool userNoBorder() const;
     bool noBorder() const override;
     void setNoBorder(bool set) override;
     bool userCanSetNoBorder() const override;
     void checkNoBorder() override;
 
     int sessionStackingOrder() const;
 
     // Auxiliary functions, depend on the windowType
     bool wantsInput() const override;
 
     bool isResizable() const override;
     bool isMovable() const override;
     bool isMovableAcrossScreens() const override;
     bool isCloseable() const override; ///< May be closed by the user (May have a close button)
 
     void takeFocus() override;
 
     void updateDecoration(bool check_workspace_pos, bool force = false) override;
 
     void updateShape();
 
     using AbstractClient::move;
     void move(int x, int y, ForceGeometry_t force = NormalGeometrySet) override;
     using AbstractClient::setFrameGeometry;
     void setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     /// plainResize() simply resizes
     void plainResize(int w, int h, ForceGeometry_t force = NormalGeometrySet);
     void plainResize(const QSize& s, ForceGeometry_t force = NormalGeometrySet);
     /// resizeWithChecks() resizes according to gravity, and checks workarea position
     using AbstractClient::resizeWithChecks;
     void resizeWithChecks(int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     void resizeWithChecks(int w, int h, xcb_gravity_t gravity, ForceGeometry_t force = NormalGeometrySet);
     void resizeWithChecks(const QSize& s, xcb_gravity_t gravity, ForceGeometry_t force = NormalGeometrySet);
     QSize constrainClientSize(const QSize &size, SizeMode mode = SizeModeAny) const override;
 
     bool providesContextHelp() const override;
 
     Options::WindowOperation mouseButtonToWindowOperation(Qt::MouseButtons button);
     bool performMouseCommand(Options::MouseCommand, const QPoint& globalPos) override;
 
     QRect adjustedClientArea(const QRect& desktop, const QRect& area) const;
 
     xcb_colormap_t colormap() const;
 
     /// Updates visibility depending on being shaded, virtual desktop, etc.
     void updateVisibility();
     /// Hides a client - Basically like minimize, but without effects, it's simply hidden
     void hideClient(bool hide) override;
     bool hiddenPreview() const; ///< Window is mapped in order to get a window pixmap
 
     bool setupCompositing() override;
     void finishCompositing(ReleaseReason releaseReason = ReleaseReason::Release) override;
     void setBlockingCompositing(bool block);
     inline bool isBlockingCompositing() { return blocks_compositing; }
 
     QString captionNormal() const override {
         return cap_normal;
     }
     QString captionSuffix() const override {
         return cap_suffix;
     }
 
     using AbstractClient::keyPressEvent;
     void keyPressEvent(uint key_code, xcb_timestamp_t time);   // FRAME ??
     void updateMouseGrab() override;
     xcb_window_t moveResizeGrabWindow() const;
 
     QPoint gravityAdjustment(xcb_gravity_t gravity) const;
     const QPoint calculateGravitation(bool invert) const;
 
     void NETMoveResize(int x_root, int y_root, NET::Direction direction);
     void NETMoveResizeWindow(int flags, int x, int y, int width, int height);
     void restackWindow(xcb_window_t above, int detail, NET::RequestSource source, xcb_timestamp_t timestamp,
                        bool send_event = false);
 
     void gotPing(xcb_timestamp_t timestamp);
 
     void updateUserTime(xcb_timestamp_t time = XCB_TIME_CURRENT_TIME);
     xcb_timestamp_t userTime() const override;
     bool hasUserTimeSupport() const;
 
     /// Does 'delete c;'
     static void deleteClient(X11Client *c);
 
     static bool belongToSameApplication(const X11Client *c1, const X11Client *c2, SameApplicationChecks checks = SameApplicationChecks());
     static bool sameAppWindowRoleMatch(const X11Client *c1, const X11Client *c2, bool active_hack);
 
     void killWindow() override;
     void toggleShade();
     void showContextHelp() override;
     void cancelShadeHoverTimer();
     void checkActiveModal();
     StrutRect strutRect(StrutArea area) const;
     StrutRects strutRects() const;
     bool hasStrut() const override;
 
     /**
      * If shown is true the client is mapped and raised, if false
      * the client is unmapped and hidden, this function is called
      * when the tabbing group of the client switches its visible
      * client.
      */
     void setClientShown(bool shown) override;
 
     /**
      * Whether or not the window has a strut that expands through the invisible area of
      * an xinerama setup where the monitors are not the same resolution.
      */
     bool hasOffscreenXineramaStrut() const;
 
     QRect transparentRect() const override;
 
     bool isClientSideDecorated() const;
     bool wantsShadowToBeRendered() const override;
 
     void layoutDecorationRects(QRect &left, QRect &top, QRect &right, QRect &bottom) const override;
 
     Xcb::Property fetchFirstInTabBox() const;
     void readFirstInTabBox(Xcb::Property &property);
     void updateFirstInTabBox();
     Xcb::StringProperty fetchColorScheme() const;
     void readColorScheme(Xcb::StringProperty &property);
     void updateColorScheme() override;
 
     //sets whether the client should be faked as being on all activities (and be shown during session save)
     void setSessionActivityOverride(bool needed);
     bool isClient() const override;
 
     template <typename T>
     void print(T &stream) const;
 
     void cancelFocusOutTimer();
 
     /**
      * Restores the Client after it had been hidden due to show on screen edge functionality.
      * In addition the property gets deleted so that the Client knows that it is visible again.
      */
     void showOnScreenEdge() override;
 
     Xcb::StringProperty fetchApplicationMenuServiceName() const;
     void readApplicationMenuServiceName(Xcb::StringProperty &property);
     void checkApplicationMenuServiceName();
 
     Xcb::StringProperty fetchApplicationMenuObjectPath() const;
     void readApplicationMenuObjectPath(Xcb::StringProperty &property);
     void checkApplicationMenuObjectPath();
 
     struct SyncRequest {
         xcb_sync_counter_t counter;
         xcb_sync_int64_t value;
         xcb_sync_alarm_t alarm;
         xcb_timestamp_t lastTimestamp;
         QTimer *timeout, *failsafeTimeout;
         bool isPending;
     };
     const SyncRequest &syncRequest() const {
         return m_syncRequest;
     }
     void handleSync();
 
     static void cleanupX11();
 
 public Q_SLOTS:
     void closeWindow() override;
     void updateCaption() override;
 
 private Q_SLOTS:
     void shadeHover();
     void shadeUnhover();
 
 private:
     // Use Workspace::createClient()
     ~X11Client() override; ///< Use destroyClient() or releaseWindow()
 
     // Handlers for X11 events
     bool mapRequestEvent(xcb_map_request_event_t *e);
     void unmapNotifyEvent(xcb_unmap_notify_event_t *e);
     void destroyNotifyEvent(xcb_destroy_notify_event_t *e);
     void configureRequestEvent(xcb_configure_request_event_t *e);
     void propertyNotifyEvent(xcb_property_notify_event_t *e) override;
     void clientMessageEvent(xcb_client_message_event_t *e) override;
     void enterNotifyEvent(xcb_enter_notify_event_t *e);
     void leaveNotifyEvent(xcb_leave_notify_event_t *e);
     void focusInEvent(xcb_focus_in_event_t *e);
     void focusOutEvent(xcb_focus_out_event_t *e);
     void damageNotifyEvent() override;
 
     bool buttonPressEvent(xcb_window_t w, int button, int state, int x, int y, int x_root, int y_root, xcb_timestamp_t time = XCB_CURRENT_TIME);
     bool buttonReleaseEvent(xcb_window_t w, int button, int state, int x, int y, int x_root, int y_root);
     bool motionNotifyEvent(xcb_window_t w, int state, int x, int y, int x_root, int y_root);
 
 protected:
     void debug(QDebug& stream) const override;
     void addDamage(const QRegion &damage) override;
     bool belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const override;
     void doSetActive() override;
     void doSetKeepAbove() override;
     void doSetKeepBelow() override;
     void doSetDesktop() override;
     void doMinimize() override;
     void doSetSkipPager() override;
     void doSetSkipTaskbar() override;
     void doSetSkipSwitcher() override;
     void doSetDemandsAttention() override;
     bool belongsToDesktop() const override;
     bool doStartMoveResize() override;
     void doPerformMoveResize() override;
     bool isWaitingForMoveResizeSync() const override;
     void doResizeSync() override;
     QSize resizeIncrements() const override;
     bool acceptsFocus() const override;
 
     //Signals for the scripting interface
     //Signals make an excellent way for communication
     //in between objects as compared to simple function
     //calls
 Q_SIGNALS:
     void clientManaging(KWin::X11Client *);
     void clientFullScreenSet(KWin::X11Client *, bool, bool);
 
     /**
      * Emitted whenever the Client want to show it menu
      */
     void showRequest();
     /**
      * Emitted whenever the Client's menu is closed
      */
     void menuHidden();
     /**
      * Emitted whenever the Client's menu is available
      */
     void appMenuAvailable();
     /**
      * Emitted whenever the Client's menu is unavailable
      */
     void appMenuUnavailable();
 
     /**
      * Emitted whenever the Client's block compositing state changes.
      */
     void blockingCompositingChanged(KWin::X11Client *client);
     void clientSideDecoratedChanged();
 
 private:
     void exportMappingState(int s);   // ICCCM 4.1.3.1, 4.1.4, NETWM 2.5.1
     bool isManaged() const; ///< Returns false if this client is not yet managed
     void updateAllowedActions(bool force = false);
     QRect fullscreenMonitorsArea(NETFullscreenMonitors topology) const;
     void changeMaximize(bool horizontal, bool vertical, bool adjust) override;
     void getWmNormalHints();
     void getMotifHints();
     void getIcons();
     void fetchName();
     void fetchIconicName();
     QString readName() const;
     void setCaption(const QString& s, bool force = false);
     bool hasTransientInternal(const X11Client *c, bool indirect, QList<const X11Client *> &set) const;
     void setShortcutInternal() override;
 
     void configureRequest(int value_mask, int rx, int ry, int rw, int rh, int gravity, bool from_tool);
     NETExtendedStrut strut() const;
     int checkShadeGeometry(int w, int h);
     void getSyncCounter();
     void sendSyncRequest();
     void leaveMoveResize() override;
     void positionGeometryTip() override;
     void grabButton(int mod);
     void ungrabButton(int mod);
     void resizeDecoration();
-    void createDecoration(const QRect &oldgeom);
+    void createDecoration(const QRect &oldgeom) override;
 
     void pingWindow();
     void killProcess(bool ask, xcb_timestamp_t timestamp = XCB_TIME_CURRENT_TIME);
     void updateUrgency();
     static void sendClientMessage(xcb_window_t w, xcb_atom_t a, xcb_atom_t protocol,
                                   uint32_t data1 = 0, uint32_t data2 = 0, uint32_t data3 = 0,
                                   xcb_timestamp_t timestamp = xTime());
 
     void embedClient(xcb_window_t w, xcb_visualid_t visualid, xcb_colormap_t colormap, uint8_t depth);
     void detectNoBorder();
     void destroyDecoration() override;
     void updateFrameExtents();
     void setClientFrameExtents(const NETStrut &strut);
 
     void internalShow();
     void internalHide();
     void internalKeep();
     void map();
     void unmap();
     void updateHiddenPreview();
 
     void updateInputShape();
     void updateServerGeometry();
     void updateWindowPixmap();
 
     xcb_timestamp_t readUserTimeMapTimestamp(const KStartupInfoId* asn_id, const KStartupInfoData* asn_data,
                                   bool session) const;
     xcb_timestamp_t readUserCreationTime() const;
     void startupIdChanged();
 
     void updateInputWindow();
 
     Xcb::Property fetchShowOnScreenEdge() const;
     void readShowOnScreenEdge(Xcb::Property &property);
     /**
      * Reads the property and creates/destroys the screen edge if required
      * and shows/hides the client.
      */
     void updateShowOnScreenEdge();
 
     Xcb::Window m_client;
     Xcb::Window m_wrapper;
     Xcb::Window m_frame;
     QStringList activityList;
     int m_activityUpdatesBlocked;
     bool m_blockedActivityUpdatesRequireTransients;
     Xcb::Window m_moveResizeGrabWindow;
     bool move_resize_has_keyboard_grab;
     bool m_managed;
 
     Xcb::GeometryHints m_geometryHints;
     void sendSyntheticConfigureNotify();
     enum MappingState {
         Withdrawn, ///< Not handled, as per ICCCM WithdrawnState
         Mapped, ///< The frame is mapped
         Unmapped, ///< The frame is not mapped
         Kept ///< The frame should be unmapped, but is kept (For compositing)
     };
     MappingState mapping_state;
 
     Xcb::TransientFor fetchTransient() const;
     void readTransientProperty(Xcb::TransientFor &transientFor);
     void readTransient();
     xcb_window_t verifyTransientFor(xcb_window_t transient_for, bool set);
     void addTransient(AbstractClient* cl) override;
     void removeTransient(AbstractClient* cl) override;
     void removeFromMainClients();
     void cleanGrouping();
     void checkGroupTransients();
     void setTransient(xcb_window_t new_transient_for_id);
     xcb_window_t m_transientForId;
     xcb_window_t m_originalTransientForId;
     ShadeMode shade_mode;
     X11Client *shade_below;
     uint deleting : 1; ///< True when doing cleanup and destroying the client
     Xcb::MotifHints m_motif;
     uint hidden : 1; ///< Forcibly hidden by calling hide()
     uint noborder : 1;
     uint app_noborder : 1; ///< App requested no border via window type, shape extension, etc.
     uint ignore_focus_stealing : 1; ///< Don't apply focus stealing prevention to this client
     bool blocks_compositing;
 
     enum FullScreenMode {
         FullScreenNone,
         FullScreenNormal
     } m_fullscreenMode;
 
     MaximizeMode max_mode;
     QRect m_bufferGeometry = QRect(0, 0, 100, 100);
     QRect m_clientGeometry = QRect(0, 0, 100, 100);
     QRect geom_fs_restore;
     QTimer* shadeHoverTimer;
     xcb_colormap_t m_colormap;
     QString cap_normal, cap_iconic, cap_suffix;
     Group* in_group;
     QTimer* ping_timer;
     qint64 m_killHelperPID;
     xcb_timestamp_t m_pingTimestamp;
     xcb_timestamp_t m_userTime;
     NET::Actions allowed_actions;
     bool shade_geometry_change;
     SyncRequest m_syncRequest;
     static bool check_active_modal; ///< \see X11Client::checkActiveModal()
     int sm_stacking_order;
     friend struct ResetupRulesProcedure;
 
     friend bool performTransiencyCheck();
 
     Xcb::StringProperty fetchActivities() const;
     void readActivities(Xcb::StringProperty &property);
     void checkActivities();
     bool activitiesDefined; //whether the x property was actually set
 
     bool sessionActivityOverride;
     bool needsXWindowMove;
 
     Xcb::Window m_decoInputExtent;
     QPoint input_offset;
 
     QTimer *m_focusOutTimer;
 
     QList<QMetaObject::Connection> m_connections;
 
     QMetaObject::Connection m_edgeRemoveConnection;
     QMetaObject::Connection m_edgeGeometryTrackingConnection;
 
     QMargins m_clientFrameExtents;
 };
 
 inline xcb_window_t X11Client::wrapperId() const
 {
     return m_wrapper;
 }
 
 inline bool X11Client::isClientSideDecorated() const
 {
     return !m_clientFrameExtents.isNull();
 }
 
 inline bool X11Client::groupTransient() const
 {
     return m_transientForId == rootWindow();
 }
 
 // Needed because verifyTransientFor() may set transient_for_id to root window,
 // if the original value has a problem (window doesn't exist, etc.)
 inline bool X11Client::wasOriginallyGroupTransient() const
 {
     return m_originalTransientForId == rootWindow();
 }
 
 inline bool X11Client::isTransient() const
 {
     return m_transientForId != XCB_WINDOW_NONE;
 }
 
 inline const Group* X11Client::group() const
 {
     return in_group;
 }
 
 inline Group* X11Client::group()
 {
     return in_group;
 }
 
 inline bool X11Client::isShown(bool shaded_is_shown) const
 {
     return !isMinimized() && (!isShade() || shaded_is_shown) && !hidden;
 }
 
 inline bool X11Client::isHiddenInternal() const
 {
     return hidden;
 }
 
 inline ShadeMode X11Client::shadeMode() const
 {
     return shade_mode;
 }
 
 inline MaximizeMode X11Client::maximizeMode() const
 {
     return max_mode;
 }
 
 inline bool X11Client::isFullScreen() const
 {
     return m_fullscreenMode != FullScreenNone;
 }
 
 inline bool X11Client::hasNETSupport() const
 {
     return info->hasNETSupport();
 }
 
 inline xcb_colormap_t X11Client::colormap() const
 {
     return m_colormap;
 }
 
 inline int X11Client::sessionStackingOrder() const
 {
     return sm_stacking_order;
 }
 
 inline bool X11Client::isManaged() const
 {
     return m_managed;
 }
 
 inline QSize X11Client::clientSize() const
 {
     return m_clientGeometry.size();
 }
 
 inline void X11Client::plainResize(const QSize& s, ForceGeometry_t force)
 {
     plainResize(s.width(), s.height(), force);
 }
 
 inline void X11Client::resizeWithChecks(int w, int h, AbstractClient::ForceGeometry_t force)
 {
     resizeWithChecks(w, h, XCB_GRAVITY_BIT_FORGET, force);
 }
 
 inline void X11Client::resizeWithChecks(const QSize& s, xcb_gravity_t gravity, ForceGeometry_t force)
 {
     resizeWithChecks(s.width(), s.height(), gravity, force);
 }
 
 inline bool X11Client::hasUserTimeSupport() const
 {
     return info->userTime() != -1U;
 }
 
 inline xcb_window_t X11Client::moveResizeGrabWindow() const
 {
     return m_moveResizeGrabWindow;
 }
 
 inline bool X11Client::hiddenPreview() const
 {
     return mapping_state == Kept;
 }
 
 template <typename T>
 inline void X11Client::print(T &stream) const
 {
     stream << "\'Client:" << window() << ";WMCLASS:" << resourceClass() << ":"
            << resourceName() << ";Caption:" << caption() << "\'";
 }
 
 } // namespace
 Q_DECLARE_METATYPE(KWin::X11Client *)
 Q_DECLARE_METATYPE(QList<KWin::X11Client *>)
diff --git a/xdgshellclient.cpp b/xdgshellclient.cpp
index e1839b3da..3bfc918f0 100644
--- a/xdgshellclient.cpp
+++ b/xdgshellclient.cpp
@@ -1,2074 +1,2049 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
 Copyright (C) 2018 David Edmundson <davidedmundson@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 #include "xdgshellclient.h"
 #include "cursor.h"
 #include "decorations/decoratedclient.h"
 #include "decorations/decorationbridge.h"
 #include "deleted.h"
 #include "placement.h"
 #include "screenedge.h"
 #include "screens.h"
 #ifdef KWIN_BUILD_TABBOX
 #include "tabbox.h"
 #endif
 #include "virtualdesktops.h"
 #include "wayland_server.h"
 #include "workspace.h"
 
 #include <KDecoration2/DecoratedClient>
 #include <KDecoration2/Decoration>
 #include <KWayland/Server/appmenu_interface.h>
 #include <KWayland/Server/buffer_interface.h>
 #include <KWayland/Server/clientconnection.h>
 #include <KWayland/Server/display.h>
 #include <KWayland/Server/plasmashell_interface.h>
 #include <KWayland/Server/plasmawindowmanagement_interface.h>
 #include <KWayland/Server/qtsurfaceextension_interface.h>
 #include <KWayland/Server/seat_interface.h>
 #include <KWayland/Server/server_decoration_interface.h>
 #include <KWayland/Server/server_decoration_palette_interface.h>
 #include <KWayland/Server/shadow_interface.h>
 #include <KWayland/Server/subcompositor_interface.h>
 #include <KWayland/Server/surface_interface.h>
 #include <KWayland/Server/xdgdecoration_interface.h>
 
 #include <QFileInfo>
 
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <csignal>
 
 Q_DECLARE_METATYPE(NET::WindowType)
 
 using namespace KWayland::Server;
 
 namespace KWin
 {
 
 XdgShellClient::XdgShellClient(XdgShellSurfaceInterface *surface)
     : AbstractClient()
     , m_xdgShellToplevel(surface)
     , m_xdgShellPopup(nullptr)
 {
     setSurface(surface->surface());
     init();
 }
 
 XdgShellClient::XdgShellClient(XdgShellPopupInterface *surface)
     : AbstractClient()
     , m_xdgShellToplevel(nullptr)
     , m_xdgShellPopup(surface)
 {
     setSurface(surface->surface());
     init();
 }
 
 XdgShellClient::~XdgShellClient() = default;
 
 void XdgShellClient::init()
 {
     m_requestGeometryBlockCounter++;
 
     connect(this, &XdgShellClient::desktopFileNameChanged, this, &XdgShellClient::updateIcon);
     createWindowId();
     setupCompositing();
     updateIcon();
 
     // TODO: Initialize with null rect.
     m_frameGeometry = QRect(0, 0, -1, -1);
     m_windowGeometry = QRect(0, 0, -1, -1);
 
     if (waylandServer()->inputMethodConnection() == surface()->client()) {
         m_windowType = NET::OnScreenDisplay;
     }
 
     connect(surface(), &SurfaceInterface::unmapped, this, &XdgShellClient::unmap);
     connect(surface(), &SurfaceInterface::unbound, this, &XdgShellClient::destroyClient);
     connect(surface(), &SurfaceInterface::destroyed, this, &XdgShellClient::destroyClient);
 
     if (m_xdgShellToplevel) {
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::destroyed, this, &XdgShellClient::destroyClient);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::configureAcknowledged, this, &XdgShellClient::handleConfigureAcknowledged);
 
         m_caption = m_xdgShellToplevel->title().simplified();
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::titleChanged, this, &XdgShellClient::handleWindowTitleChanged);
         QTimer::singleShot(0, this, &XdgShellClient::updateCaption);
 
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::moveRequested, this, &XdgShellClient::handleMoveRequested);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::resizeRequested, this, &XdgShellClient::handleResizeRequested);
 
         // Determine the resource name, this is inspired from ICCCM 4.1.2.5
         // the binary name of the invoked client.
         QFileInfo info{m_xdgShellToplevel->client()->executablePath()};
         QByteArray resourceName;
         if (info.exists()) {
             resourceName = info.fileName().toUtf8();
         }
         setResourceClass(resourceName, m_xdgShellToplevel->windowClass());
         setDesktopFileName(m_xdgShellToplevel->windowClass());
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::windowClassChanged, this, &XdgShellClient::handleWindowClassChanged);
 
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::minimizeRequested, this, &XdgShellClient::handleMinimizeRequested);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::maximizedChanged, this, &XdgShellClient::handleMaximizeRequested);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::fullscreenChanged, this, &XdgShellClient::handleFullScreenRequested);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::windowMenuRequested, this, &XdgShellClient::handleWindowMenuRequested);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::transientForChanged, this, &XdgShellClient::handleTransientForChanged);
         connect(m_xdgShellToplevel, &XdgShellSurfaceInterface::windowGeometryChanged, this, &XdgShellClient::handleWindowGeometryChanged);
 
         auto global = static_cast<XdgShellInterface *>(m_xdgShellToplevel->global());
         connect(global, &XdgShellInterface::pingDelayed, this, &XdgShellClient::handlePingDelayed);
         connect(global, &XdgShellInterface::pingTimeout, this, &XdgShellClient::handlePingTimeout);
         connect(global, &XdgShellInterface::pongReceived, this, &XdgShellClient::handlePongReceived);
 
         auto configure = [this] {
             if (m_closing) {
                 return;
             }
             if (m_requestGeometryBlockCounter != 0 || areGeometryUpdatesBlocked()) {
                 return;
             }
             m_xdgShellToplevel->configure(xdgSurfaceStates(), m_requestedClientSize);
         };
         connect(this, &AbstractClient::activeChanged, this, configure);
         connect(this, &AbstractClient::clientStartUserMovedResized, this, configure);
         connect(this, &AbstractClient::clientFinishUserMovedResized, this, configure);
 
         connect(this, &XdgShellClient::frameGeometryChanged, this, &XdgShellClient::updateClientOutputs);
         connect(screens(), &Screens::changed, this, &XdgShellClient::updateClientOutputs);
     } else if (m_xdgShellPopup) {
         connect(m_xdgShellPopup, &XdgShellPopupInterface::configureAcknowledged, this, &XdgShellClient::handleConfigureAcknowledged);
         connect(m_xdgShellPopup, &XdgShellPopupInterface::grabRequested, this, &XdgShellClient::handleGrabRequested);
         connect(m_xdgShellPopup, &XdgShellPopupInterface::destroyed, this, &XdgShellClient::destroyClient);
         connect(m_xdgShellPopup, &XdgShellPopupInterface::windowGeometryChanged, this, &XdgShellClient::handleWindowGeometryChanged);
     }
 
     // set initial desktop
     setDesktop(VirtualDesktopManager::self()->current());
 
     // setup shadow integration
     updateShadow();
     connect(surface(), &SurfaceInterface::shadowChanged, this, &Toplevel::updateShadow);
 
     connect(waylandServer(), &WaylandServer::foreignTransientChanged, this, [this](KWayland::Server::SurfaceInterface *child) {
         if (child == surface()) {
             handleTransientForChanged();
         }
     });
     handleTransientForChanged();
 
     AbstractClient::updateColorScheme(QString());
 
     connect(surface(), &SurfaceInterface::committed, this, &XdgShellClient::finishInit);
 }
 
 void XdgShellClient::finishInit()
 {
     disconnect(surface(), &SurfaceInterface::committed, this, &XdgShellClient::finishInit);
 
     connect(surface(), &SurfaceInterface::committed, this, &XdgShellClient::handleCommitted);
 
     bool needsPlacement = !isInitialPositionSet();
 
     if (supportsWindowRules()) {
         setupWindowRules(false);
 
         const QRect originalGeometry = frameGeometry();
         const QRect ruledGeometry = rules()->checkGeometry(originalGeometry, true);
         if (originalGeometry != ruledGeometry) {
             setFrameGeometry(ruledGeometry);
         }
 
         maximize(rules()->checkMaximize(maximizeMode(), true));
 
         setDesktop(rules()->checkDesktop(desktop(), true));
         setDesktopFileName(rules()->checkDesktopFile(desktopFileName(), true).toUtf8());
         if (rules()->checkMinimize(isMinimized(), true)) {
             minimize(true); // No animation.
         }
         setSkipTaskbar(rules()->checkSkipTaskbar(skipTaskbar(), true));
         setSkipPager(rules()->checkSkipPager(skipPager(), true));
         setSkipSwitcher(rules()->checkSkipSwitcher(skipSwitcher(), true));
         setKeepAbove(rules()->checkKeepAbove(keepAbove(), true));
         setKeepBelow(rules()->checkKeepBelow(keepBelow(), true));
         setShortcut(rules()->checkShortcut(shortcut().toString(), true));
         updateColorScheme();
 
         // Don't place the client if its position is set by a rule.
         if (rules()->checkPosition(invalidPoint, true) != invalidPoint) {
             needsPlacement = false;
         }
 
         // Don't place the client if the maximize state is set by a rule.
         if (requestedMaximizeMode() != MaximizeRestore) {
             needsPlacement = false;
         }
 
         discardTemporaryRules();
         RuleBook::self()->discardUsed(this, false); // Remove Apply Now rules.
         updateWindowRules(Rules::All);
     }
 
     if (isFullScreen()) {
         needsPlacement = false;
     }
 
     if (needsPlacement) {
         const QRect area = workspace()->clientArea(PlacementArea, Screens::self()->current(), desktop());
         placeIn(area);
     }
 
     m_requestGeometryBlockCounter--;
     if (m_requestGeometryBlockCounter == 0) {
         requestGeometry(m_blockedRequestGeometry);
     }
 
     m_isInitialized = true;
 }
 
 void XdgShellClient::destroyClient()
 {
     m_closing = true;
 #ifdef KWIN_BUILD_TABBOX
     TabBox::TabBox *tabBox = TabBox::TabBox::self();
     if (tabBox->isDisplayed() && tabBox->currentClient() == this) {
         tabBox->nextPrev(true);
     }
 #endif
     if (isMoveResize()) {
         leaveMoveResize();
     }
 
     // Replace ShellClient with an instance of Deleted in the stacking order.
     Deleted *deleted = Deleted::create(this);
     emit windowClosed(this, deleted);
 
     // Remove Force Temporarily rules.
     RuleBook::self()->discardUsed(this, true);
 
     destroyWindowManagementInterface();
     destroyDecoration();
 
     StackingUpdatesBlocker blocker(workspace());
     if (transientFor()) {
         transientFor()->removeTransient(this);
     }
     for (auto it = transients().constBegin(); it != transients().constEnd();) {
         if ((*it)->transientFor() == this) {
             removeTransient(*it);
             it = transients().constBegin(); // restart, just in case something more has changed with the list
         } else {
             ++it;
         }
     }
 
     waylandServer()->removeClient(this);
 
     deleted->unrefWindow();
 
     m_xdgShellToplevel = nullptr;
     m_xdgShellPopup = nullptr;
     deleteClient(this);
 }
 
 void XdgShellClient::deleteClient(XdgShellClient *c)
 {
     delete c;
 }
 
 QRect XdgShellClient::inputGeometry() const
 {
     if (isDecorated()) {
         return AbstractClient::inputGeometry();
     }
     // TODO: What about sub-surfaces sticking outside the main surface?
     return m_bufferGeometry;
 }
 
 QRect XdgShellClient::bufferGeometry() const
 {
     return m_bufferGeometry;
 }
 
 QStringList XdgShellClient::activities() const
 {
     // TODO: implement
     return QStringList();
 }
 
 QPoint XdgShellClient::clientContentPos() const
 {
     return -1 * clientPos();
 }
 
 static QRect subSurfaceTreeRect(const SurfaceInterface *surface, const QPoint &position = QPoint())
 {
     QRect rect(position, surface->size());
 
     const QList<QPointer<SubSurfaceInterface>> subSurfaces = surface->childSubSurfaces();
     for (const QPointer<SubSurfaceInterface> &subSurface : subSurfaces) {
         if (Q_UNLIKELY(!subSurface)) {
             continue;
         }
         const SurfaceInterface *child = subSurface->surface();
         if (Q_UNLIKELY(!child)) {
             continue;
         }
         rect |= subSurfaceTreeRect(child, position + subSurface->position());
     }
 
     return rect;
 }
 
 QSize XdgShellClient::clientSize() const
 {
     const QRect boundingRect = subSurfaceTreeRect(surface());
     return m_windowGeometry.size().boundedTo(boundingRect.size());
 }
 
 QSize XdgShellClient::minSize() const
 {
     if (m_xdgShellToplevel) {
         return rules()->checkMinSize(m_xdgShellToplevel->minimumSize());
     }
     return QSize(0, 0);
 }
 
 QSize XdgShellClient::maxSize() const
 {
     if (m_xdgShellToplevel) {
         return rules()->checkMaxSize(m_xdgShellToplevel->maximumSize());
     }
     return QSize(INT_MAX, INT_MAX);
 }
 
 void XdgShellClient::debug(QDebug &stream) const
 {
     stream.nospace();
     stream << "\'XdgShellClient:" << surface() << ";WMCLASS:" << resourceClass() << ":"
            << resourceName() << ";Caption:" << caption() << "\'";
 }
 
 bool XdgShellClient::belongsToDesktop() const
 {
     const auto clients = waylandServer()->clients();
 
     return std::any_of(clients.constBegin(), clients.constEnd(),
         [this](const AbstractClient *client) {
             if (belongsToSameApplication(client, SameApplicationChecks())) {
                 return client->isDesktop();
             }
             return false;
         }
     );
 }
 
 Layer XdgShellClient::layerForDock() const
 {
     if (m_plasmaShellSurface) {
         switch (m_plasmaShellSurface->panelBehavior()) {
         case PlasmaShellSurfaceInterface::PanelBehavior::WindowsCanCover:
             return NormalLayer;
         case PlasmaShellSurfaceInterface::PanelBehavior::AutoHide:
             return AboveLayer;
         case PlasmaShellSurfaceInterface::PanelBehavior::WindowsGoBelow:
         case PlasmaShellSurfaceInterface::PanelBehavior::AlwaysVisible:
             return DockLayer;
         default:
             Q_UNREACHABLE();
             break;
         }
     }
     return AbstractClient::layerForDock();
 }
 
 QRect XdgShellClient::transparentRect() const
 {
     // TODO: implement
     return QRect();
 }
 
 NET::WindowType XdgShellClient::windowType(bool direct, int supported_types) const
 {
     // TODO: implement
     Q_UNUSED(direct)
     Q_UNUSED(supported_types)
     return m_windowType;
 }
 
 double XdgShellClient::opacity() const
 {
     return m_opacity;
 }
 
 void XdgShellClient::setOpacity(double opacity)
 {
     const qreal newOpacity = qBound(0.0, opacity, 1.0);
     if (newOpacity == m_opacity) {
         return;
     }
     const qreal oldOpacity = m_opacity;
     m_opacity = newOpacity;
     addRepaintFull();
     emit opacityChanged(this, oldOpacity);
 }
 
 void XdgShellClient::addDamage(const QRegion &damage)
 {
     const int offsetX = m_bufferGeometry.x() - frameGeometry().x();
     const int offsetY = m_bufferGeometry.y() - frameGeometry().y();
     repaints_region += damage.translated(offsetX, offsetY);
 
     Toplevel::addDamage(damage);
 }
 
 void XdgShellClient::markAsMapped()
 {
     if (!m_unmapped) {
         return;
     }
 
     m_unmapped = false;
     if (!ready_for_painting) {
         setReadyForPainting();
     } else {
         addRepaintFull();
         emit windowShown(this);
     }
     if (shouldExposeToWindowManagement()) {
         setupWindowManagementInterface();
     }
     updateShowOnScreenEdge();
 }
 
-void XdgShellClient::createDecoration(const QRect &oldGeom)
-{
-    KDecoration2::Decoration *decoration = Decoration::DecorationBridge::self()->createDecoration(this);
-    if (decoration) {
-        QMetaObject::invokeMethod(decoration, "update", Qt::QueuedConnection);
-        connect(decoration, &KDecoration2::Decoration::shadowChanged, this, &Toplevel::updateShadow);
-        connect(decoration, &KDecoration2::Decoration::bordersChanged, this,
-            [this]() {
-                GeometryUpdatesBlocker blocker(this);
-                RequestGeometryBlocker requestBlocker(this);
-                const QRect oldGeometry = frameGeometry();
-                if (!isShade()) {
-                    checkWorkspacePosition(oldGeometry);
-                }
-                emit geometryShapeChanged(this, oldGeometry);
-            }
-        );
-    }
-    setDecoration(decoration);
-    // TODO: ensure the new geometry still fits into the client area (e.g. maximized windows)
-    doSetGeometry(QRect(oldGeom.topLeft(), m_windowGeometry.size() + QSize(borderLeft() + borderRight(), borderBottom() + borderTop())));
-
-    emit geometryShapeChanged(this, oldGeom);
-}
-
 void XdgShellClient::updateDecoration(bool check_workspace_pos, bool force)
 {
     if (!force &&
             ((!isDecorated() && noBorder()) || (isDecorated() && !noBorder())))
         return;
     QRect oldgeom = frameGeometry();
     QRect oldClientGeom = oldgeom.adjusted(borderLeft(), borderTop(), -borderRight(), -borderBottom());
     blockGeometryUpdates(true);
     if (force)
         destroyDecoration();
     if (!noBorder()) {
         createDecoration(oldgeom);
     } else
         destroyDecoration();
     if (m_serverDecoration && isDecorated()) {
         m_serverDecoration->setMode(KWayland::Server::ServerSideDecorationManagerInterface::Mode::Server);
     }
     if (m_xdgDecoration) {
         auto mode = isDecorated() || m_userNoBorder ? XdgDecorationInterface::Mode::ServerSide: XdgDecorationInterface::Mode::ClientSide;
         m_xdgDecoration->configure(mode);
         if (m_requestGeometryBlockCounter == 0) {
             m_xdgShellToplevel->configure(xdgSurfaceStates(), m_requestedClientSize);
         }
     }
     updateShadow();
     if (check_workspace_pos)
         checkWorkspacePosition(oldgeom, -2, oldClientGeom);
     blockGeometryUpdates(false);
 }
 
 void XdgShellClient::setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force)
 {
     const QRect newGeometry = rules()->checkGeometry(QRect(x, y, w, h));
 
     if (areGeometryUpdatesBlocked()) {
         // when the GeometryUpdateBlocker exits the current geom is passed to setGeometry
         // thus we need to set it here.
         m_frameGeometry = newGeometry;
         if (pendingGeometryUpdate() == PendingGeometryForced) {
             // maximum, nothing needed
         } else if (force == ForceGeometrySet) {
             setPendingGeometryUpdate(PendingGeometryForced);
         } else {
             setPendingGeometryUpdate(PendingGeometryNormal);
         }
         return;
     }
 
     if (pendingGeometryUpdate() != PendingGeometryNone) {
         // reset geometry to the one before blocking, so that we can compare properly
         m_frameGeometry = frameGeometryBeforeUpdateBlocking();
     }
 
     const QSize requestedClientSize = newGeometry.size() - QSize(borderLeft() + borderRight(), borderTop() + borderBottom());
 
     if (requestedClientSize == m_windowGeometry.size() &&
         (m_requestedClientSize.isEmpty() || requestedClientSize == m_requestedClientSize)) {
         // size didn't change, and we don't need to explicitly request a new size
         doSetGeometry(newGeometry);
         updateMaximizeMode(m_requestedMaximizeMode);
     } else {
         // size did change, Client needs to provide a new buffer
         requestGeometry(newGeometry);
     }
 }
 
 QRect XdgShellClient::determineBufferGeometry() const
 {
     // Offset of the main surface relative to the frame rect.
     const int offsetX = borderLeft() - m_windowGeometry.left();
     const int offsetY = borderTop() - m_windowGeometry.top();
 
     QRect bufferGeometry;
     bufferGeometry.setX(x() + offsetX);
     bufferGeometry.setY(y() + offsetY);
     bufferGeometry.setSize(surface()->size());
 
     return bufferGeometry;
 }
 
 void XdgShellClient::doSetGeometry(const QRect &rect)
 {
     bool frameGeometryIsChanged = false;
     bool bufferGeometryIsChanged = false;
 
     if (m_frameGeometry != rect) {
         m_frameGeometry = rect;
         frameGeometryIsChanged = true;
     }
 
     const QRect bufferGeometry = determineBufferGeometry();
     if (m_bufferGeometry != bufferGeometry) {
         m_bufferGeometry = bufferGeometry;
         bufferGeometryIsChanged = true;
     }
 
     if (!frameGeometryIsChanged && !bufferGeometryIsChanged) {
         return;
     }
 
     if (m_unmapped && geometryRestore().isEmpty() && !m_frameGeometry.isEmpty()) {
         // use first valid geometry as restore geometry
         setGeometryRestore(m_frameGeometry);
     }
 
     if (frameGeometryIsChanged) {
         if (hasStrut()) {
             workspace()->updateClientArea();
         }
         updateWindowRules(Rules::Position | Rules::Size);
         emit frameGeometryChanged(this, frameGeometryBeforeUpdateBlocking());
     }
 
     emit geometryShapeChanged(this, frameGeometryBeforeUpdateBlocking());
 
     addRepaintDuringGeometryUpdates();
     updateGeometryBeforeUpdateBlocking();
 
     if (isResize()) {
         performMoveResize();
     }
 }
 
 void XdgShellClient::doMove(int x, int y)
 {
     Q_UNUSED(x)
     Q_UNUSED(y)
     m_bufferGeometry = determineBufferGeometry();
 }
 
 QByteArray XdgShellClient::windowRole() const
 {
     return QByteArray();
 }
 
 bool XdgShellClient::belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const
 {
     if (checks.testFlag(SameApplicationCheck::AllowCrossProcesses)) {
         if (other->desktopFileName() == desktopFileName()) {
             return true;
         }
     }
     if (auto s = other->surface()) {
         return s->client() == surface()->client();
     }
     return false;
 }
 
 void XdgShellClient::blockActivityUpdates(bool b)
 {
     Q_UNUSED(b)
 }
 
 QString XdgShellClient::captionNormal() const
 {
     return m_caption;
 }
 
 QString XdgShellClient::captionSuffix() const
 {
     return m_captionSuffix;
 }
 
 void XdgShellClient::updateCaption()
 {
     const QString oldSuffix = m_captionSuffix;
     const auto shortcut = shortcutCaptionSuffix();
     m_captionSuffix = shortcut;
     if ((!isSpecialWindow() || isToolbar()) && findClientWithSameCaption()) {
         int i = 2;
         do {
             m_captionSuffix = shortcut + QLatin1String(" <") + QString::number(i) + QLatin1Char('>');
             i++;
         } while (findClientWithSameCaption());
     }
     if (m_captionSuffix != oldSuffix) {
         emit captionChanged();
     }
 }
 
 void XdgShellClient::closeWindow()
 {
     if (m_xdgShellToplevel && isCloseable()) {
         m_xdgShellToplevel->close();
         ping(PingReason::CloseWindow);
     }
 }
 
 AbstractClient *XdgShellClient::findModal(bool allow_itself)
 {
     Q_UNUSED(allow_itself)
     return nullptr;
 }
 
 bool XdgShellClient::isCloseable() const
 {
     if (m_windowType == NET::Desktop || m_windowType == NET::Dock) {
         return false;
     }
     if (m_xdgShellToplevel) {
         return true;
     }
     return false;
 }
 
 bool XdgShellClient::isFullScreen() const
 {
     return m_fullScreen;
 }
 
 bool XdgShellClient::isMaximizable() const
 {
     if (!isResizable()) {
         return false;
     }
     if (rules()->checkMaximize(MaximizeRestore) != MaximizeRestore || rules()->checkMaximize(MaximizeFull) != MaximizeFull) {
         return false;
     }
     return true;
 }
 
 bool XdgShellClient::isMinimizable() const
 {
     if (!rules()->checkMinimize(true)) {
         return false;
     }
     return (!m_plasmaShellSurface || m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Normal);
 }
 
 bool XdgShellClient::isMovable() const
 {
     if (isFullScreen()) {
         return false;
     }
     if (rules()->checkPosition(invalidPoint) != invalidPoint) {
         return false;
     }
     if (m_plasmaShellSurface) {
         return m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Normal;
     }
     if (m_xdgShellPopup) {
         return false;
     }
     return true;
 }
 
 bool XdgShellClient::isMovableAcrossScreens() const
 {
     if (rules()->checkPosition(invalidPoint) != invalidPoint) {
         return false;
     }
     if (m_plasmaShellSurface) {
         return m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Normal;
     }
     if (m_xdgShellPopup) {
         return false;
     }
     return true;
 }
 
 bool XdgShellClient::isResizable() const
 {
     if (isFullScreen()) {
         return false;
     }
     if (rules()->checkSize(QSize()).isValid()) {
         return false;
     }
     if (m_plasmaShellSurface) {
         return m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Normal;
     }
     if (m_xdgShellPopup) {
         return false;
     }
     return true;
 }
 
 bool XdgShellClient::isShown(bool shaded_is_shown) const
 {
     Q_UNUSED(shaded_is_shown)
     return !m_closing && !m_unmapped && !isMinimized() && !m_hidden;
 }
 
 bool XdgShellClient::isHiddenInternal() const
 {
     return m_unmapped || m_hidden;
 }
 
 void XdgShellClient::hideClient(bool hide)
 {
     if (m_hidden == hide) {
         return;
     }
     m_hidden = hide;
     if (hide) {
         addWorkspaceRepaint(visibleRect());
         workspace()->clientHidden(this);
         emit windowHidden(this);
     } else {
         emit windowShown(this);
     }
 }
 
 static bool changeMaximizeRecursion = false;
 void XdgShellClient::changeMaximize(bool horizontal, bool vertical, bool adjust)
 {
     if (changeMaximizeRecursion) {
         return;
     }
 
     if (!isResizable()) {
         return;
     }
 
     const QRect clientArea = isElectricBorderMaximizing() ?
         workspace()->clientArea(MaximizeArea, Cursor::pos(), desktop()) :
         workspace()->clientArea(MaximizeArea, this);
 
     const MaximizeMode oldMode = m_requestedMaximizeMode;
     const QRect oldGeometry = frameGeometry();
 
     // 'adjust == true' means to update the size only, e.g. after changing workspace size
     if (!adjust) {
         if (vertical)
             m_requestedMaximizeMode = MaximizeMode(m_requestedMaximizeMode ^ MaximizeVertical);
         if (horizontal)
             m_requestedMaximizeMode = MaximizeMode(m_requestedMaximizeMode ^ MaximizeHorizontal);
     }
 
     m_requestedMaximizeMode = rules()->checkMaximize(m_requestedMaximizeMode);
     if (!adjust && m_requestedMaximizeMode == oldMode) {
         return;
     }
 
     StackingUpdatesBlocker blocker(workspace());
     RequestGeometryBlocker geometryBlocker(this);
 
     // call into decoration update borders
     if (isDecorated() && decoration()->client() && !(options->borderlessMaximizedWindows() && m_requestedMaximizeMode == KWin::MaximizeFull)) {
         changeMaximizeRecursion = true;
         const auto c = decoration()->client().data();
         if ((m_requestedMaximizeMode & MaximizeVertical) != (oldMode & MaximizeVertical)) {
             emit c->maximizedVerticallyChanged(m_requestedMaximizeMode & MaximizeVertical);
         }
         if ((m_requestedMaximizeMode & MaximizeHorizontal) != (oldMode & MaximizeHorizontal)) {
             emit c->maximizedHorizontallyChanged(m_requestedMaximizeMode & MaximizeHorizontal);
         }
         if ((m_requestedMaximizeMode == MaximizeFull) != (oldMode == MaximizeFull)) {
             emit c->maximizedChanged(m_requestedMaximizeMode & MaximizeFull);
         }
         changeMaximizeRecursion = false;
     }
 
     if (options->borderlessMaximizedWindows()) {
         // triggers a maximize change.
         // The next setNoBorder interation will exit since there's no change but the first recursion pullutes the restore geometry
         changeMaximizeRecursion = true;
         setNoBorder(rules()->checkNoBorder(m_requestedMaximizeMode == MaximizeFull));
         changeMaximizeRecursion = false;
     }
 
     // Conditional quick tiling exit points
     const auto oldQuickTileMode = quickTileMode();
     if (quickTileMode() != QuickTileMode(QuickTileFlag::None)) {
         if (oldMode == MaximizeFull &&
                 !clientArea.contains(geometryRestore().center())) {
             // Not restoring on the same screen
             // TODO: The following doesn't work for some reason
             //quick_tile_mode = QuickTileNone; // And exit quick tile mode manually
         } else if ((oldMode == MaximizeVertical && m_requestedMaximizeMode == MaximizeRestore) ||
                   (oldMode == MaximizeFull && m_requestedMaximizeMode == MaximizeHorizontal)) {
             // Modifying geometry of a tiled window
             updateQuickTileMode(QuickTileFlag::None); // Exit quick tile mode without restoring geometry
         }
     }
 
     if (m_requestedMaximizeMode == MaximizeFull) {
         setGeometryRestore(oldGeometry);
         // TODO: Client has more checks
         if (options->electricBorderMaximize()) {
             updateQuickTileMode(QuickTileFlag::Maximize);
         } else {
             updateQuickTileMode(QuickTileFlag::None);
         }
         if (quickTileMode() != oldQuickTileMode) {
             emit quickTileModeChanged();
         }
         setFrameGeometry(workspace()->clientArea(MaximizeArea, this));
         workspace()->raiseClient(this);
     } else {
         if (m_requestedMaximizeMode == MaximizeRestore) {
             updateQuickTileMode(QuickTileFlag::None);
         }
         if (quickTileMode() != oldQuickTileMode) {
             emit quickTileModeChanged();
         }
 
         if (geometryRestore().isValid()) {
             setFrameGeometry(geometryRestore());
         } else {
             setFrameGeometry(workspace()->clientArea(PlacementArea, this));
         }
     }
 }
 
 MaximizeMode XdgShellClient::maximizeMode() const
 {
     return m_maximizeMode;
 }
 
 MaximizeMode XdgShellClient::requestedMaximizeMode() const
 {
     return m_requestedMaximizeMode;
 }
 
 bool XdgShellClient::noBorder() const
 {
     if (m_serverDecoration) {
         if (m_serverDecoration->mode() == ServerSideDecorationManagerInterface::Mode::Server) {
             return m_userNoBorder || isFullScreen();
         }
     }
     if (m_xdgDecoration && m_xdgDecoration->requestedMode() != XdgDecorationInterface::Mode::ClientSide) {
         return m_userNoBorder || isFullScreen();
     }
     return true;
 }
 
 bool XdgShellClient::isFullScreenable() const
 {
     if (!rules()->checkFullScreen(true)) {
         return false;
     }
     return !isSpecialWindow();
 }
 
 void XdgShellClient::setFullScreen(bool set, bool user)
 {
     set = rules()->checkFullScreen(set);
 
     const bool wasFullscreen = isFullScreen();
     if (wasFullscreen == set) {
         return;
     }
     if (isSpecialWindow()) {
         return;
     }
     if (user && !userCanSetFullScreen()) {
         return;
     }
 
     if (wasFullscreen) {
         workspace()->updateFocusMousePosition(Cursor::pos()); // may cause leave event
     } else {
         m_geomFsRestore = frameGeometry();
     }
     m_fullScreen = set;
 
     if (set) {
         workspace()->raiseClient(this);
     }
     RequestGeometryBlocker requestBlocker(this);
     StackingUpdatesBlocker blocker1(workspace());
     GeometryUpdatesBlocker blocker2(this);
 
     workspace()->updateClientLayer(this);   // active fullscreens get different layer
     updateDecoration(false, false);
 
     if (set) {
         setFrameGeometry(workspace()->clientArea(FullScreenArea, this));
     } else {
         if (m_geomFsRestore.isValid()) {
             int currentScreen = screen();
             setFrameGeometry(QRect(m_geomFsRestore.topLeft(), constrainFrameSize(m_geomFsRestore.size())));
             if( currentScreen != screen())
                 workspace()->sendClientToScreen( this, currentScreen );
         } else {
             // this can happen when the window was first shown already fullscreen,
             // so let the client set the size by itself
             setFrameGeometry(QRect(workspace()->clientArea(PlacementArea, this).topLeft(), QSize(0, 0)));
         }
     }
 
     updateWindowRules(Rules::Fullscreen|Rules::Position|Rules::Size);
     emit fullScreenChanged();
 }
 
 void XdgShellClient::setNoBorder(bool set)
 {
     if (!userCanSetNoBorder()) {
         return;
     }
     set = rules()->checkNoBorder(set);
     if (m_userNoBorder == set) {
         return;
     }
     m_userNoBorder = set;
     updateDecoration(true, false);
     updateWindowRules(Rules::NoBorder);
 }
 
 void XdgShellClient::setOnAllActivities(bool set)
 {
     Q_UNUSED(set)
 }
 
 void XdgShellClient::takeFocus()
 {
     if (rules()->checkAcceptFocus(wantsInput())) {
         if (m_xdgShellToplevel) {
             ping(PingReason::FocusWindow);
         }
         setActive(true);
     }
 
     if (!keepAbove() && !isOnScreenDisplay() && !belongsToDesktop()) {
         workspace()->setShowingDesktop(false);
     }
 }
 
 void XdgShellClient::doSetActive()
 {
     if (!isActive()) {
         return;
     }
     StackingUpdatesBlocker blocker(workspace());
     workspace()->focusToNull();
 }
 
 bool XdgShellClient::userCanSetFullScreen() const
 {
     if (m_xdgShellToplevel) {
         return true;
     }
     return false;
 }
 
 bool XdgShellClient::userCanSetNoBorder() const
 {
     if (m_serverDecoration && m_serverDecoration->mode() == ServerSideDecorationManagerInterface::Mode::Server) {
         return !isFullScreen() && !isShade();
     }
     if (m_xdgDecoration && m_xdgDecoration->requestedMode() != XdgDecorationInterface::Mode::ClientSide) {
         return !isFullScreen() && !isShade();
     }
     return false;
 }
 
 bool XdgShellClient::wantsInput() const
 {
     return rules()->checkAcceptFocus(acceptsFocus());
 }
 
 bool XdgShellClient::acceptsFocus() const
 {
     if (waylandServer()->inputMethodConnection() == surface()->client()) {
         return false;
     }
     if (m_plasmaShellSurface) {
         if (m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::OnScreenDisplay ||
             m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::ToolTip) {
             return false;
         }
 
         if (m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Notification ||
             m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::CriticalNotification) {
             return m_plasmaShellSurface->panelTakesFocus();
         }
     }
     if (m_closing) {
         // a closing window does not accept focus
         return false;
     }
     if (m_unmapped) {
         // an unmapped window does not accept focus
         return false;
     }
     if (m_xdgShellToplevel) {
         // TODO: proper
         return true;
     }
     return false;
 }
 
 void XdgShellClient::createWindowId()
 {
     m_windowId = waylandServer()->createWindowId(surface());
 }
 
 pid_t XdgShellClient::pid() const
 {
     return surface()->client()->processId();
 }
 
 bool XdgShellClient::isLockScreen() const
 {
     return surface()->client() == waylandServer()->screenLockerClientConnection();
 }
 
 bool XdgShellClient::isInputMethod() const
 {
     return surface()->client() == waylandServer()->inputMethodConnection();
 }
 
 void XdgShellClient::requestGeometry(const QRect &rect)
 {
     if (m_requestGeometryBlockCounter != 0) {
         m_blockedRequestGeometry = rect;
         return;
     }
 
     QSize size;
     if (rect.isValid()) {
         size = rect.size() - QSize(borderLeft() + borderRight(), borderTop() + borderBottom());
     } else {
         size = QSize(0, 0);
     }
     m_requestedClientSize = size;
 
     quint64 serialId = 0;
 
     if (m_xdgShellToplevel) {
         serialId = m_xdgShellToplevel->configure(xdgSurfaceStates(), size);
     }
     if (m_xdgShellPopup) {
         auto parent = transientFor();
         if (parent) {
             const QPoint globalClientContentPos = parent->frameGeometry().topLeft() + parent->clientPos();
             const QPoint relativeOffset = rect.topLeft() - globalClientContentPos;
             serialId = m_xdgShellPopup->configure(QRect(relativeOffset, size));
         }
     }
 
     if (rect.isValid()) { //if there's no requested size, then there's implicity no positional information worth using
         PendingConfigureRequest configureRequest;
         configureRequest.serialId = serialId;
         configureRequest.positionAfterResize = rect.topLeft();
         configureRequest.maximizeMode = m_requestedMaximizeMode;
         m_pendingConfigureRequests.append(configureRequest);
     }
 
     m_blockedRequestGeometry = QRect();
 }
 
 void XdgShellClient::updatePendingGeometry()
 {
     QPoint position = pos();
     MaximizeMode maximizeMode = m_maximizeMode;
     for (auto it = m_pendingConfigureRequests.begin(); it != m_pendingConfigureRequests.end(); it++) {
         if (it->serialId > m_lastAckedConfigureRequest) {
             //this serial is not acked yet, therefore we know all future serials are not
             break;
         }
         if (it->serialId == m_lastAckedConfigureRequest) {
             if (position != it->positionAfterResize) {
                 addLayerRepaint(frameGeometry());
             }
             position = it->positionAfterResize;
             maximizeMode = it->maximizeMode;
 
             m_pendingConfigureRequests.erase(m_pendingConfigureRequests.begin(), ++it);
             break;
         }
         //else serialId < m_lastAckedConfigureRequest and the state is now irrelevant and can be ignored
     }
     QRect geometry = QRect(position, adjustedSize());
     if (isMove()) {
         geometry = adjustMoveGeometry(geometry);
     }
     if (isResize()) {
         geometry = adjustResizeGeometry(geometry);
     }
     doSetGeometry(geometry);
     updateMaximizeMode(maximizeMode);
 }
 
 void XdgShellClient::handleConfigureAcknowledged(quint32 serial)
 {
     m_lastAckedConfigureRequest = serial;
 }
 
 void XdgShellClient::handleTransientForChanged()
 {
     SurfaceInterface *transientSurface = nullptr;
     if (m_xdgShellToplevel) {
         if (auto transient = m_xdgShellToplevel->transientFor().data()) {
             transientSurface = transient->surface();
         }
     }
     if (m_xdgShellPopup) {
         transientSurface = m_xdgShellPopup->transientFor().data();
     }
     if (!transientSurface) {
         transientSurface = waylandServer()->findForeignTransientForSurface(surface());
     }
     AbstractClient *transientClient = waylandServer()->findClient(transientSurface);
     if (transientClient != transientFor()) {
         // Remove from main client.
         if (transientFor()) {
             transientFor()->removeTransient(this);
         }
         setTransientFor(transientClient);
         if (transientClient) {
             transientClient->addTransient(this);
         }
     }
     m_transient = (transientSurface != nullptr);
 }
 
 void XdgShellClient::handleWindowClassChanged(const QByteArray &windowClass)
 {
     setResourceClass(resourceName(), windowClass);
     if (m_isInitialized && supportsWindowRules()) {
         setupWindowRules(true);
         applyWindowRules();
     }
     setDesktopFileName(windowClass);
 }
 
 void XdgShellClient::handleWindowGeometryChanged(const QRect &windowGeometry)
 {
     m_windowGeometry = windowGeometry;
     m_hasWindowGeometry = true;
 }
 
 void XdgShellClient::handleWindowTitleChanged(const QString &title)
 {
     const QString oldSuffix = m_captionSuffix;
     m_caption = title.simplified();
     updateCaption();
     if (m_captionSuffix == oldSuffix) {
         // Don't emit caption change twice it already got emitted by the changing suffix.
         emit captionChanged();
     }
 }
 
 void XdgShellClient::handleMoveRequested(SeatInterface *seat, quint32 serial)
 {
     // FIXME: Check the seat and serial.
     Q_UNUSED(seat)
     Q_UNUSED(serial)
     performMouseCommand(Options::MouseMove, Cursor::pos());
 }
 
 void XdgShellClient::handleResizeRequested(SeatInterface *seat, quint32 serial, Qt::Edges edges)
 {
     // FIXME: Check the seat and serial.
     Q_UNUSED(seat)
     Q_UNUSED(serial)
     if (!isResizable() || isShade()) {
         return;
     }
     if (isMoveResize()) {
         finishMoveResize(false);
     }
     setMoveResizePointerButtonDown(true);
     setMoveOffset(Cursor::pos() - pos());  // map from global
     setInvertedMoveOffset(rect().bottomRight() - moveOffset());
     setUnrestrictedMoveResize(false);
     auto toPosition = [edges] {
         Position position = PositionCenter;
         if (edges.testFlag(Qt::TopEdge)) {
             position = PositionTop;
         } else if (edges.testFlag(Qt::BottomEdge)) {
             position = PositionBottom;
         }
         if (edges.testFlag(Qt::LeftEdge)) {
             position = Position(position | PositionLeft);
         } else if (edges.testFlag(Qt::RightEdge)) {
             position = Position(position | PositionRight);
         }
         return position;
     };
     setMoveResizePointerMode(toPosition());
     if (!startMoveResize()) {
         setMoveResizePointerButtonDown(false);
     }
     updateCursor();
 }
 
 void XdgShellClient::handleMinimizeRequested()
 {
     performMouseCommand(Options::MouseMinimize, Cursor::pos());
 }
 
 void XdgShellClient::handleMaximizeRequested(bool maximized)
 {
     // If the maximized state of the client hasn't been changed due to a window
     // rule or because the requested state is the same as the current, then the
     // compositor still has to send a configure event.
     RequestGeometryBlocker blocker(this);
 
     maximize(maximized ? MaximizeFull : MaximizeRestore);
 }
 
 void XdgShellClient::handleFullScreenRequested(bool fullScreen, OutputInterface *output)
 {
     // FIXME: Consider output as well.
     Q_UNUSED(output);
     setFullScreen(fullScreen, false);
 }
 
 void XdgShellClient::handleWindowMenuRequested(SeatInterface *seat, quint32 serial, const QPoint &surfacePos)
 {
     // FIXME: Check the seat and serial.
     Q_UNUSED(seat)
     Q_UNUSED(serial)
     performMouseCommand(Options::MouseOperationsMenu, pos() + surfacePos);
 }
 
 void XdgShellClient::handleGrabRequested(SeatInterface *seat, quint32 serial)
 {
     // FIXME: Check the seat and serial as well whether the parent had focus.
     Q_UNUSED(seat)
     Q_UNUSED(serial)
     m_hasPopupGrab = true;
 }
 
 void XdgShellClient::handlePingDelayed(quint32 serial)
 {
     auto it = m_pingSerials.find(serial);
     if (it != m_pingSerials.end()) {
         qCDebug(KWIN_CORE) << "First ping timeout:" << caption();
         setUnresponsive(true);
     }
 }
 
 void XdgShellClient::handlePingTimeout(quint32 serial)
 {
     auto it = m_pingSerials.find(serial);
     if (it != m_pingSerials.end()) {
         if (it.value() == PingReason::CloseWindow) {
             qCDebug(KWIN_CORE) << "Final ping timeout on a close attempt, asking to kill:" << caption();
 
             //for internal windows, killing the window will delete this
             QPointer<QObject> guard(this);
             killWindow();
             if (!guard) {
                 return;
             }
         }
         m_pingSerials.erase(it);
     }
 }
 
 void XdgShellClient::handlePongReceived(quint32 serial)
 {
     auto it = m_pingSerials.find(serial);
     if (it != m_pingSerials.end()) {
         setUnresponsive(false);
         m_pingSerials.erase(it);
     }
 }
 
 void XdgShellClient::handleCommitted()
 {
     if (!surface()->buffer()) {
         return;
     }
 
     if (!m_hasWindowGeometry) {
         m_windowGeometry = subSurfaceTreeRect(surface());
     }
 
     updatePendingGeometry();
 
     setDepth((surface()->buffer()->hasAlphaChannel() && !isDesktop()) ? 32 : 24);
     markAsMapped();
 }
 
 void XdgShellClient::resizeWithChecks(int w, int h, ForceGeometry_t force)
 {
     const QRect area = workspace()->clientArea(WorkArea, this);
     // don't allow growing larger than workarea
     if (w > area.width()) {
         w = area.width();
     }
     if (h > area.height()) {
         h = area.height();
     }
     setFrameGeometry(x(), y(), w, h, force);
 }
 
 void XdgShellClient::unmap()
 {
     m_unmapped = true;
     if (isMoveResize()) {
         leaveMoveResize();
     }
     m_requestedClientSize = QSize(0, 0);
     destroyWindowManagementInterface();
     if (Workspace::self()) {
         addWorkspaceRepaint(visibleRect());
         workspace()->clientHidden(this);
     }
     emit windowHidden(this);
 }
 
 void XdgShellClient::installPlasmaShellSurface(PlasmaShellSurfaceInterface *surface)
 {
     m_plasmaShellSurface = surface;
     auto updatePosition = [this, surface] {
         // That's a mis-use of doSetGeometry method. One should instead use move method.
         QRect rect = QRect(surface->position(), size());
         doSetGeometry(rect);
     };
     auto updateRole = [this, surface] {
         NET::WindowType type = NET::Unknown;
         switch (surface->role()) {
         case PlasmaShellSurfaceInterface::Role::Desktop:
             type = NET::Desktop;
             break;
         case PlasmaShellSurfaceInterface::Role::Panel:
             type = NET::Dock;
             break;
         case PlasmaShellSurfaceInterface::Role::OnScreenDisplay:
             type = NET::OnScreenDisplay;
             break;
         case PlasmaShellSurfaceInterface::Role::Notification:
             type = NET::Notification;
             break;
         case PlasmaShellSurfaceInterface::Role::ToolTip:
             type = NET::Tooltip;
             break;
         case PlasmaShellSurfaceInterface::Role::CriticalNotification:
             type = NET::CriticalNotification;
             break;
         case PlasmaShellSurfaceInterface::Role::Normal:
         default:
             type = NET::Normal;
             break;
         }
         if (type != m_windowType) {
             m_windowType = type;
             if (m_windowType == NET::Desktop || type == NET::Dock || type == NET::OnScreenDisplay || type == NET::Notification || type == NET::Tooltip || type == NET::CriticalNotification) {
                 setOnAllDesktops(true);
             }
             workspace()->updateClientArea();
         }
     };
     connect(surface, &PlasmaShellSurfaceInterface::panelTakesFocusChanged , this, [this, surface]() {
         if (surface->panelTakesFocus()) {
             workspace()->activateClient(this);
         }
     });
     connect(surface, &PlasmaShellSurfaceInterface::positionChanged, this, updatePosition);
     connect(surface, &PlasmaShellSurfaceInterface::roleChanged, this, updateRole);
     connect(surface, &PlasmaShellSurfaceInterface::panelBehaviorChanged, this,
         [this] {
             updateShowOnScreenEdge();
             workspace()->updateClientArea();
         }
     );
     connect(surface, &PlasmaShellSurfaceInterface::panelAutoHideHideRequested, this,
         [this] {
             hideClient(true);
             m_plasmaShellSurface->hideAutoHidingPanel();
             updateShowOnScreenEdge();
         }
     );
     connect(surface, &PlasmaShellSurfaceInterface::panelAutoHideShowRequested, this,
         [this] {
             hideClient(false);
             ScreenEdges::self()->reserve(this, ElectricNone);
             m_plasmaShellSurface->showAutoHidingPanel();
         }
     );
     updatePosition();
     updateRole();
     updateShowOnScreenEdge();
     connect(this, &XdgShellClient::frameGeometryChanged, this, &XdgShellClient::updateShowOnScreenEdge);
 
     setSkipTaskbar(surface->skipTaskbar());
     connect(surface, &PlasmaShellSurfaceInterface::skipTaskbarChanged, this, [this] {
         setSkipTaskbar(m_plasmaShellSurface->skipTaskbar());
     });
 
     setSkipSwitcher(surface->skipSwitcher());
     connect(surface, &PlasmaShellSurfaceInterface::skipSwitcherChanged, this, [this] {
         setSkipSwitcher(m_plasmaShellSurface->skipSwitcher());
     });
 }
 
 void XdgShellClient::updateShowOnScreenEdge()
 {
     if (!ScreenEdges::self()) {
         return;
     }
     if (m_unmapped || !m_plasmaShellSurface || m_plasmaShellSurface->role() != PlasmaShellSurfaceInterface::Role::Panel) {
         ScreenEdges::self()->reserve(this, ElectricNone);
         return;
     }
     if ((m_plasmaShellSurface->panelBehavior() == PlasmaShellSurfaceInterface::PanelBehavior::AutoHide && m_hidden) ||
         m_plasmaShellSurface->panelBehavior() == PlasmaShellSurfaceInterface::PanelBehavior::WindowsCanCover) {
         // screen edge API requires an edge, thus we need to figure out which edge the window borders
         const QRect clientGeometry = frameGeometry();
         Qt::Edges edges;
         for (int i = 0; i < screens()->count(); i++) {
             const QRect screenGeometry = screens()->geometry(i);
             if (screenGeometry.left() == clientGeometry.left()) {
                 edges |= Qt::LeftEdge;
             }
             if (screenGeometry.right() == clientGeometry.right()) {
                 edges |= Qt::RightEdge;
             }
             if (screenGeometry.top() == clientGeometry.top()) {
                 edges |= Qt::TopEdge;
             }
             if (screenGeometry.bottom() == clientGeometry.bottom()) {
                 edges |= Qt::BottomEdge;
             }
         }
         // a panel might border multiple screen edges. E.g. a horizontal panel at the bottom will
         // also border the left and right edge
         // let's remove such cases
         if (edges.testFlag(Qt::LeftEdge) && edges.testFlag(Qt::RightEdge)) {
             edges = edges & (~(Qt::LeftEdge | Qt::RightEdge));
         }
         if (edges.testFlag(Qt::TopEdge) && edges.testFlag(Qt::BottomEdge)) {
             edges = edges & (~(Qt::TopEdge | Qt::BottomEdge));
         }
         // it's still possible that a panel borders two edges, e.g. bottom and left
         // in that case the one which is sharing more with the edge wins
         auto check = [clientGeometry](Qt::Edges edges, Qt::Edge horiz, Qt::Edge vert) {
             if (edges.testFlag(horiz) && edges.testFlag(vert)) {
                 if (clientGeometry.width() >= clientGeometry.height()) {
                     return edges & ~horiz;
                 } else {
                     return edges & ~vert;
                 }
             }
             return edges;
         };
         edges = check(edges, Qt::LeftEdge, Qt::TopEdge);
         edges = check(edges, Qt::LeftEdge, Qt::BottomEdge);
         edges = check(edges, Qt::RightEdge, Qt::TopEdge);
         edges = check(edges, Qt::RightEdge, Qt::BottomEdge);
 
         ElectricBorder border = ElectricNone;
         if (edges.testFlag(Qt::LeftEdge)) {
             border = ElectricLeft;
         }
         if (edges.testFlag(Qt::RightEdge)) {
             border = ElectricRight;
         }
         if (edges.testFlag(Qt::TopEdge)) {
             border = ElectricTop;
         }
         if (edges.testFlag(Qt::BottomEdge)) {
             border = ElectricBottom;
         }
         ScreenEdges::self()->reserve(this, border);
     } else {
         ScreenEdges::self()->reserve(this, ElectricNone);
     }
 }
 
 bool XdgShellClient::isInitialPositionSet() const
 {
     if (m_plasmaShellSurface) {
         return m_plasmaShellSurface->isPositionSet();
     }
     return false;
 }
 
 void XdgShellClient::installAppMenu(AppMenuInterface *menu)
 {
     m_appMenuInterface = menu;
 
     auto updateMenu = [this](AppMenuInterface::InterfaceAddress address) {
         updateApplicationMenuServiceName(address.serviceName);
         updateApplicationMenuObjectPath(address.objectPath);
     };
     connect(m_appMenuInterface, &AppMenuInterface::addressChanged, this, [=](AppMenuInterface::InterfaceAddress address) {
         updateMenu(address);
     });
     updateMenu(menu->address());
 }
 
 void XdgShellClient::installPalette(ServerSideDecorationPaletteInterface *palette)
 {
     m_paletteInterface = palette;
 
     auto updatePalette = [this](const QString &palette) {
         AbstractClient::updateColorScheme(rules()->checkDecoColor(palette));
     };
     connect(m_paletteInterface, &ServerSideDecorationPaletteInterface::paletteChanged, this, [=](const QString &palette) {
         updatePalette(palette);
     });
     connect(m_paletteInterface, &QObject::destroyed, this, [=]() {
         updatePalette(QString());
     });
     updatePalette(palette->palette());
 }
 
 void XdgShellClient::updateColorScheme()
 {
     if (m_paletteInterface) {
         AbstractClient::updateColorScheme(rules()->checkDecoColor(m_paletteInterface->palette()));
     } else {
         AbstractClient::updateColorScheme(rules()->checkDecoColor(QString()));
     }
 }
 
 void XdgShellClient::updateMaximizeMode(MaximizeMode maximizeMode)
 {
     if (maximizeMode == m_maximizeMode) {
         return;
     }
 
     m_maximizeMode = maximizeMode;
     updateWindowRules(Rules::MaximizeHoriz | Rules::MaximizeVert | Rules::Position | Rules::Size);
 
     emit clientMaximizedStateChanged(this, m_maximizeMode);
     emit clientMaximizedStateChanged(this, m_maximizeMode & MaximizeHorizontal, m_maximizeMode & MaximizeVertical);
 }
 
 bool XdgShellClient::hasStrut() const
 {
     if (!isShown(true)) {
         return false;
     }
     if (!m_plasmaShellSurface) {
         return false;
     }
     if (m_plasmaShellSurface->role() != PlasmaShellSurfaceInterface::Role::Panel) {
         return false;
     }
     return m_plasmaShellSurface->panelBehavior() == PlasmaShellSurfaceInterface::PanelBehavior::AlwaysVisible;
 }
 
 quint32 XdgShellClient::windowId() const
 {
     return m_windowId;
 }
 
 void XdgShellClient::updateIcon()
 {
     const QString waylandIconName = QStringLiteral("wayland");
     const QString dfIconName = iconFromDesktopFile();
     const QString iconName = dfIconName.isEmpty() ? waylandIconName : dfIconName;
     if (iconName == icon().name()) {
         return;
     }
     setIcon(QIcon::fromTheme(iconName));
 }
 
 bool XdgShellClient::isTransient() const
 {
     return m_transient;
 }
 
 bool XdgShellClient::hasTransientPlacementHint() const
 {
     return isTransient() && transientFor() && m_xdgShellPopup;
 }
 
 QRect XdgShellClient::transientPlacement(const QRect &bounds) const
 {
     Q_ASSERT(m_xdgShellPopup);
 
     QRect anchorRect;
     Qt::Edges anchorEdge;
     Qt::Edges gravity;
     QPoint offset;
     PositionerConstraints constraintAdjustments;
     QSize size = frameGeometry().size();
 
     const QPoint parentClientPos = transientFor()->pos() + transientFor()->clientPos();
 
     // returns if a target is within the supplied bounds, optional edges argument states which side to check
     auto inBounds = [bounds](const QRect &target, Qt::Edges edges = Qt::LeftEdge | Qt::RightEdge | Qt::TopEdge | Qt::BottomEdge) -> bool {
         if (edges & Qt::LeftEdge && target.left() < bounds.left()) {
             return false;
         }
         if (edges & Qt::TopEdge && target.top() < bounds.top()) {
             return false;
         }
         if (edges & Qt::RightEdge && target.right() > bounds.right()) {
             //normal QRect::right issue cancels out
             return false;
         }
         if (edges & Qt::BottomEdge && target.bottom() > bounds.bottom()) {
             return false;
         }
         return true;
     };
 
     anchorRect = m_xdgShellPopup->anchorRect();
     anchorEdge = m_xdgShellPopup->anchorEdge();
     gravity = m_xdgShellPopup->gravity();
     offset = m_xdgShellPopup->anchorOffset();
     constraintAdjustments = m_xdgShellPopup->constraintAdjustments();
     if (!size.isValid()) {
         size = m_xdgShellPopup->initialSize();
     }
 
     QRect popupRect(popupOffset(anchorRect, anchorEdge, gravity, size) + offset + parentClientPos, size);
 
     //if that fits, we don't need to do anything
     if (inBounds(popupRect)) {
         return popupRect;
     }
     //otherwise apply constraint adjustment per axis in order XDG Shell Popup states
 
     if (constraintAdjustments & PositionerConstraint::FlipX) {
         if (!inBounds(popupRect, Qt::LeftEdge | Qt::RightEdge)) {
             //flip both edges (if either bit is set, XOR both)
             auto flippedAnchorEdge = anchorEdge;
             if (flippedAnchorEdge & (Qt::LeftEdge | Qt::RightEdge)) {
                 flippedAnchorEdge ^= (Qt::LeftEdge | Qt::RightEdge);
             }
             auto flippedGravity = gravity;
             if (flippedGravity & (Qt::LeftEdge | Qt::RightEdge)) {
                 flippedGravity ^= (Qt::LeftEdge | Qt::RightEdge);
             }
             auto flippedPopupRect = QRect(popupOffset(anchorRect, flippedAnchorEdge, flippedGravity, size) + offset + parentClientPos, size);
 
             //if it still doesn't fit we should continue with the unflipped version
             if (inBounds(flippedPopupRect, Qt::LeftEdge | Qt::RightEdge)) {
                 popupRect.moveLeft(flippedPopupRect.left());
             }
         }
     }
     if (constraintAdjustments & PositionerConstraint::SlideX) {
         if (!inBounds(popupRect, Qt::LeftEdge)) {
             popupRect.moveLeft(bounds.left());
         }
         if (!inBounds(popupRect, Qt::RightEdge)) {
             popupRect.moveRight(bounds.right());
         }
     }
     if (constraintAdjustments & PositionerConstraint::ResizeX) {
         QRect unconstrainedRect = popupRect;
 
         if (!inBounds(unconstrainedRect, Qt::LeftEdge)) {
             unconstrainedRect.setLeft(bounds.left());
         }
         if (!inBounds(unconstrainedRect, Qt::RightEdge)) {
             unconstrainedRect.setRight(bounds.right());
         }
 
         if (unconstrainedRect.isValid()) {
             popupRect = unconstrainedRect;
         }
     }
 
     if (constraintAdjustments & PositionerConstraint::FlipY) {
         if (!inBounds(popupRect, Qt::TopEdge | Qt::BottomEdge)) {
             //flip both edges (if either bit is set, XOR both)
             auto flippedAnchorEdge = anchorEdge;
             if (flippedAnchorEdge & (Qt::TopEdge | Qt::BottomEdge)) {
                 flippedAnchorEdge ^= (Qt::TopEdge | Qt::BottomEdge);
             }
             auto flippedGravity = gravity;
             if (flippedGravity & (Qt::TopEdge | Qt::BottomEdge)) {
                 flippedGravity ^= (Qt::TopEdge | Qt::BottomEdge);
             }
             auto flippedPopupRect = QRect(popupOffset(anchorRect, flippedAnchorEdge, flippedGravity, size) + offset + parentClientPos, size);
 
             //if it still doesn't fit we should continue with the unflipped version
             if (inBounds(flippedPopupRect, Qt::TopEdge | Qt::BottomEdge)) {
                 popupRect.moveTop(flippedPopupRect.top());
             }
         }
     }
     if (constraintAdjustments & PositionerConstraint::SlideY) {
         if (!inBounds(popupRect, Qt::TopEdge)) {
             popupRect.moveTop(bounds.top());
         }
         if (!inBounds(popupRect, Qt::BottomEdge)) {
             popupRect.moveBottom(bounds.bottom());
         }
     }
     if (constraintAdjustments & PositionerConstraint::ResizeY) {
         QRect unconstrainedRect = popupRect;
 
         if (!inBounds(unconstrainedRect, Qt::TopEdge)) {
             unconstrainedRect.setTop(bounds.top());
         }
         if (!inBounds(unconstrainedRect, Qt::BottomEdge)) {
             unconstrainedRect.setBottom(bounds.bottom());
         }
 
         if (unconstrainedRect.isValid()) {
             popupRect = unconstrainedRect;
         }
     }
 
     return popupRect;
 }
 
 QPoint XdgShellClient::popupOffset(const QRect &anchorRect, const Qt::Edges anchorEdge, const Qt::Edges gravity, const QSize popupSize) const
 {
     QPoint anchorPoint;
     switch (anchorEdge & (Qt::LeftEdge | Qt::RightEdge)) {
     case Qt::LeftEdge:
         anchorPoint.setX(anchorRect.x());
         break;
     case Qt::RightEdge:
         anchorPoint.setX(anchorRect.x() + anchorRect.width());
         break;
     default:
         anchorPoint.setX(qRound(anchorRect.x() + anchorRect.width() / 2.0));
     }
     switch (anchorEdge & (Qt::TopEdge | Qt::BottomEdge)) {
     case Qt::TopEdge:
         anchorPoint.setY(anchorRect.y());
         break;
     case Qt::BottomEdge:
         anchorPoint.setY(anchorRect.y() + anchorRect.height());
         break;
     default:
         anchorPoint.setY(qRound(anchorRect.y() + anchorRect.height() / 2.0));
     }
 
     // calculate where the top left point of the popup will end up with the applied gravity
     // gravity indicates direction. i.e if gravitating towards the top the popup's bottom edge
     // will next to the anchor point
     QPoint popupPosAdjust;
     switch (gravity & (Qt::LeftEdge | Qt::RightEdge)) {
     case Qt::LeftEdge:
         popupPosAdjust.setX(-popupSize.width());
         break;
     case Qt::RightEdge:
         popupPosAdjust.setX(0);
         break;
     default:
         popupPosAdjust.setX(qRound(-popupSize.width() / 2.0));
     }
     switch (gravity & (Qt::TopEdge | Qt::BottomEdge)) {
     case Qt::TopEdge:
         popupPosAdjust.setY(-popupSize.height());
         break;
     case Qt::BottomEdge:
         popupPosAdjust.setY(0);
         break;
     default:
         popupPosAdjust.setY(qRound(-popupSize.height() / 2.0));
     }
 
     return anchorPoint + popupPosAdjust;
 }
 
 void XdgShellClient::doResizeSync()
 {
     requestGeometry(moveResizeGeometry());
 }
 
 QMatrix4x4 XdgShellClient::inputTransformation() const
 {
     QMatrix4x4 matrix;
     matrix.translate(-m_bufferGeometry.x(), -m_bufferGeometry.y());
     return matrix;
 }
 
 void XdgShellClient::installServerSideDecoration(KWayland::Server::ServerSideDecorationInterface *deco)
 {
     if (m_serverDecoration == deco) {
         return;
     }
     m_serverDecoration = deco;
     connect(m_serverDecoration, &ServerSideDecorationInterface::destroyed, this,
         [this] {
             m_serverDecoration = nullptr;
             if (m_closing || !Workspace::self()) {
                 return;
             }
             if (!m_unmapped) {
                 // maybe delay to next event cycle in case the XdgShellClient is getting destroyed, too
                 updateDecoration(true);
             }
         }
     );
     if (!m_unmapped) {
         updateDecoration(true);
     }
     connect(m_serverDecoration, &ServerSideDecorationInterface::modeRequested, this,
         [this] (ServerSideDecorationManagerInterface::Mode mode) {
             const bool changed = mode != m_serverDecoration->mode();
             if (changed && !m_unmapped) {
                 updateDecoration(false);
             }
         }
     );
 }
 
 void XdgShellClient::installXdgDecoration(XdgDecorationInterface *deco)
 {
     Q_ASSERT(m_xdgShellToplevel);
 
     m_xdgDecoration = deco;
 
     connect(m_xdgDecoration, &QObject::destroyed, this,
         [this] {
             m_xdgDecoration = nullptr;
             if (m_closing || !Workspace::self()) {
                 return;
             }
             updateDecoration(true);
         }
     );
 
     connect(m_xdgDecoration, &XdgDecorationInterface::modeRequested, this,
         [this] () {
         //force is true as we must send a new configure response
         updateDecoration(false, true);
     });
 }
 
 bool XdgShellClient::shouldExposeToWindowManagement()
 {
     if (isLockScreen()) {
         return false;
     }
     if (m_xdgShellPopup) {
         return false;
     }
     return true;
 }
 
 KWayland::Server::XdgShellSurfaceInterface::States XdgShellClient::xdgSurfaceStates() const
 {
     XdgShellSurfaceInterface::States states;
     if (isActive()) {
         states |= XdgShellSurfaceInterface::State::Activated;
     }
     if (isFullScreen()) {
         states |= XdgShellSurfaceInterface::State::Fullscreen;
     }
     if (m_requestedMaximizeMode == MaximizeMode::MaximizeFull) {
         states |= XdgShellSurfaceInterface::State::Maximized;
     }
     if (isResize()) {
         states |= XdgShellSurfaceInterface::State::Resizing;
     }
     return states;
 }
 
 void XdgShellClient::doMinimize()
 {
     if (isMinimized()) {
         workspace()->clientHidden(this);
     } else {
         emit windowShown(this);
     }
     workspace()->updateMinimizedOfTransients(this);
 }
 
 void XdgShellClient::showOnScreenEdge()
 {
     if (!m_plasmaShellSurface || m_unmapped) {
         return;
     }
     hideClient(false);
     workspace()->raiseClient(this);
     if (m_plasmaShellSurface->panelBehavior() == PlasmaShellSurfaceInterface::PanelBehavior::AutoHide) {
         m_plasmaShellSurface->showAutoHidingPanel();
     }
 }
 
 bool XdgShellClient::dockWantsInput() const
 {
     if (m_plasmaShellSurface) {
         if (m_plasmaShellSurface->role() == PlasmaShellSurfaceInterface::Role::Panel) {
             return m_plasmaShellSurface->panelTakesFocus();
         }
     }
     return false;
 }
 
 void XdgShellClient::killWindow()
 {
     if (!surface()) {
         return;
     }
     auto c = surface()->client();
     if (c->processId() == getpid() || c->processId() == 0) {
         c->destroy();
         return;
     }
     ::kill(c->processId(), SIGTERM);
     // give it time to terminate and only if terminate fails, try destroy Wayland connection
     QTimer::singleShot(5000, c, &ClientConnection::destroy);
 }
 
 bool XdgShellClient::isLocalhost() const
 {
     return true;
 }
 
 bool XdgShellClient::hasPopupGrab() const
 {
     return m_hasPopupGrab;
 }
 
 void XdgShellClient::popupDone()
 {
     if (m_xdgShellPopup) {
         m_xdgShellPopup->popupDone();
     }
 }
 
 void XdgShellClient::updateClientOutputs()
 {
     QVector<OutputInterface *> clientOutputs;
     const auto outputs = waylandServer()->display()->outputs();
     for (OutputInterface *output : outputs) {
         const QRect outputGeometry(output->globalPosition(), output->pixelSize() / output->scale());
         if (frameGeometry().intersects(outputGeometry)) {
             clientOutputs << output;
         }
     }
     surface()->setOutputs(clientOutputs);
 }
 
 bool XdgShellClient::isPopupWindow() const
 {
     if (Toplevel::isPopupWindow()) {
         return true;
     }
     if (m_xdgShellPopup != nullptr) {
         return true;
     }
     return false;
 }
 
 bool XdgShellClient::supportsWindowRules() const
 {
     if (m_plasmaShellSurface) {
         return false;
     }
     return m_xdgShellToplevel;
 }
 
 QRect XdgShellClient::adjustMoveGeometry(const QRect &rect) const
 {
     QRect geometry = rect;
     geometry.moveTopLeft(moveResizeGeometry().topLeft());
     return geometry;
 }
 
 QRect XdgShellClient::adjustResizeGeometry(const QRect &rect) const
 {
     QRect geometry = rect;
 
     // We need to adjust frame geometry because configure events carry the maximum window geometry
     // size. A client that has aspect ratio can attach a buffer with smaller size than the one in
     // a configure event.
     switch (moveResizePointerMode()) {
     case PositionTopLeft:
         geometry.moveRight(moveResizeGeometry().right());
         geometry.moveBottom(moveResizeGeometry().bottom());
         break;
     case PositionTop:
     case PositionTopRight:
         geometry.moveLeft(moveResizeGeometry().left());
         geometry.moveBottom(moveResizeGeometry().bottom());
         break;
     case PositionRight:
     case PositionBottomRight:
     case PositionBottom:
         geometry.moveLeft(moveResizeGeometry().left());
         geometry.moveTop(moveResizeGeometry().top());
         break;
     case PositionBottomLeft:
     case PositionLeft:
         geometry.moveRight(moveResizeGeometry().right());
         geometry.moveTop(moveResizeGeometry().top());
         break;
     case PositionCenter:
         Q_UNREACHABLE();
     }
 
     return geometry;
 }
 
 void XdgShellClient::ping(PingReason reason)
 {
     Q_ASSERT(m_xdgShellToplevel);
 
     XdgShellInterface *shell = static_cast<XdgShellInterface *>(m_xdgShellToplevel->global());
     const quint32 serial = shell->ping(m_xdgShellToplevel);
     m_pingSerials.insert(serial, reason);
 }
 
 }
diff --git a/xdgshellclient.h b/xdgshellclient.h
index a215ad11e..7a1f0fb55 100644
--- a/xdgshellclient.h
+++ b/xdgshellclient.h
@@ -1,270 +1,269 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
 Copyright (C) 2018 David Edmundson <davidedmundson@kde.org>
 Copyright (C) 2019 Vlad Zahorodnii <vlad.zahorodnii@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/>.
 *********************************************************************/
 
 #pragma once
 
 #include "abstract_client.h"
 
 #include <KWayland/Server/xdgshell_interface.h>
 
 namespace KWayland
 {
 namespace Server
 {
 class ServerSideDecorationInterface;
 class ServerSideDecorationPaletteInterface;
 class AppMenuInterface;
 class PlasmaShellSurfaceInterface;
 class XdgDecorationInterface;
 }
 }
 
 namespace KWin
 {
 
 /**
  * @brief The reason for which the server pinged a client surface
  */
 enum class PingReason {
     CloseWindow = 0,
     FocusWindow
 };
 
 class KWIN_EXPORT XdgShellClient : public AbstractClient
 {
     Q_OBJECT
 
 public:
     XdgShellClient(KWayland::Server::XdgShellSurfaceInterface *surface);
     XdgShellClient(KWayland::Server::XdgShellPopupInterface *surface);
     ~XdgShellClient() override;
 
     QRect inputGeometry() const override;
     QRect bufferGeometry() const override;
     QStringList activities() const override;
     QPoint clientContentPos() const override;
     QSize clientSize() const override;
     QSize minSize() const override;
     QSize maxSize() const override;
     QRect transparentRect() const override;
     NET::WindowType windowType(bool direct = false, int supported_types = 0) const override;
     void debug(QDebug &stream) const override;
     double opacity() const override;
     void setOpacity(double opacity) override;
     QByteArray windowRole() const override;
     void blockActivityUpdates(bool b = true) override;
     QString captionNormal() const override;
     QString captionSuffix() const override;
     void closeWindow() override;
     AbstractClient *findModal(bool allow_itself = false) override;
     bool isCloseable() const override;
     bool isFullScreenable() const override;
     bool isFullScreen() const override;
     bool isMaximizable() const override;
     bool isMinimizable() const override;
     bool isMovable() const override;
     bool isMovableAcrossScreens() const override;
     bool isResizable() const override;
     bool isShown(bool shaded_is_shown) const override;
     bool isHiddenInternal() const override;
     void hideClient(bool hide) override;
     MaximizeMode maximizeMode() const override;
     MaximizeMode requestedMaximizeMode() const override;
     bool noBorder() const override;
     void setFullScreen(bool set, bool user = true) override;
     void setNoBorder(bool set) override;
     void updateDecoration(bool check_workspace_pos, bool force = false) override;
     void setOnAllActivities(bool set) override;
     void takeFocus() override;
     bool userCanSetFullScreen() const override;
     bool userCanSetNoBorder() const override;
     bool wantsInput() const override;
     bool dockWantsInput() const override;
     using AbstractClient::resizeWithChecks;
     void resizeWithChecks(int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     using AbstractClient::setFrameGeometry;
     void setFrameGeometry(int x, int y, int w, int h, ForceGeometry_t force = NormalGeometrySet) override;
     bool hasStrut() const override;
     quint32 windowId() const override;
     pid_t pid() const override;
     bool isLockScreen() const override;
     bool isInputMethod() const override;
     bool isInitialPositionSet() const override;
     bool isTransient() const override;
     bool hasTransientPlacementHint() const override;
     QRect transientPlacement(const QRect &bounds) const override;
     QMatrix4x4 inputTransformation() const override;
     void showOnScreenEdge() override;
     bool hasPopupGrab() const override;
     void popupDone() override;
     void updateColorScheme() override;
     bool isPopupWindow() const override;
     void killWindow() override;
     bool isLocalhost() const override;
     bool supportsWindowRules() const override;
     void destroyClient() override;
 
     void installPlasmaShellSurface(KWayland::Server::PlasmaShellSurfaceInterface *surface);
     void installServerSideDecoration(KWayland::Server::ServerSideDecorationInterface *decoration);
     void installAppMenu(KWayland::Server::AppMenuInterface *appmenu);
     void installPalette(KWayland::Server::ServerSideDecorationPaletteInterface *palette);
     void installXdgDecoration(KWayland::Server::XdgDecorationInterface *decoration);
 
 protected:
     void addDamage(const QRegion &damage) override;
     bool belongsToSameApplication(const AbstractClient *other, SameApplicationChecks checks) const override;
     void doSetActive() override;
     bool belongsToDesktop() const override;
     Layer layerForDock() const override;
     void changeMaximize(bool horizontal, bool vertical, bool adjust) override;
     void doResizeSync() override;
     bool acceptsFocus() const override;
     void doMinimize() override;
     void updateCaption() override;
     void doMove(int x, int y) override;
 
 private Q_SLOTS:
     void handleConfigureAcknowledged(quint32 serial);
     void handleTransientForChanged();
     void handleWindowClassChanged(const QByteArray &windowClass);
     void handleWindowGeometryChanged(const QRect &windowGeometry);
     void handleWindowTitleChanged(const QString &title);
     void handleMoveRequested(KWayland::Server::SeatInterface *seat, quint32 serial);
     void handleResizeRequested(KWayland::Server::SeatInterface *seat, quint32 serial, Qt::Edges edges);
     void handleMinimizeRequested();
     void handleMaximizeRequested(bool maximized);
     void handleFullScreenRequested(bool fullScreen, KWayland::Server::OutputInterface *output);
     void handleWindowMenuRequested(KWayland::Server::SeatInterface *seat, quint32 serial, const QPoint &surfacePos);
     void handleGrabRequested(KWayland::Server::SeatInterface *seat, quint32 serial);
     void handlePingDelayed(quint32 serial);
     void handlePingTimeout(quint32 serial);
     void handlePongReceived(quint32 serial);
     void handleCommitted();
 
 private:
     /**
      *  Called when the shell is created.
      */
     void init();
     /**
      * Called for the XDG case when the shell surface is committed to the surface.
      * At this point all initial properties should have been set by the client.
      */
     void finishInit();
-    void createDecoration(const QRect &oldgeom);
     void createWindowId();
     void updateIcon();
     bool shouldExposeToWindowManagement();
     void updateClientOutputs();
     KWayland::Server::XdgShellSurfaceInterface::States xdgSurfaceStates() const;
     void updateShowOnScreenEdge();
     void updateMaximizeMode(MaximizeMode maximizeMode);
     // called on surface commit and processes all m_pendingConfigureRequests up to m_lastAckedConfigureReqest
     void updatePendingGeometry();
     QPoint popupOffset(const QRect &anchorRect, const Qt::Edges anchorEdge, const Qt::Edges gravity, const QSize popupSize) const;
     void requestGeometry(const QRect &rect);
     void doSetGeometry(const QRect &rect);
     void unmap();
     void markAsMapped();
     QRect determineBufferGeometry() const;
     void ping(PingReason reason);
     static void deleteClient(XdgShellClient *c);
 
     QRect adjustMoveGeometry(const QRect &rect) const;
     QRect adjustResizeGeometry(const QRect &rect) const;
 
     KWayland::Server::XdgShellSurfaceInterface *m_xdgShellToplevel;
     KWayland::Server::XdgShellPopupInterface *m_xdgShellPopup;
 
     QRect m_bufferGeometry;
     QRect m_windowGeometry;
     bool m_hasWindowGeometry = false;
 
     // last size we requested or empty if we haven't sent an explicit request to the client
     // if empty the client should choose their own default size
     QSize m_requestedClientSize = QSize(0, 0);
 
     struct PendingConfigureRequest {
         //note for wl_shell we have no serial, so serialId and m_lastAckedConfigureRequest will always be 0
         //meaning we treat a surface commit as having processed all requests
         quint32 serialId = 0;
         // position to apply after a resize operation has been completed
         QPoint positionAfterResize;
         MaximizeMode maximizeMode;
     };
     QVector<PendingConfigureRequest> m_pendingConfigureRequests;
     quint32 m_lastAckedConfigureRequest = 0;
 
     //mode in use by the current buffer
     MaximizeMode m_maximizeMode = MaximizeRestore;
     //mode we currently want to be, could be pending on client updating, could be not sent yet
     MaximizeMode m_requestedMaximizeMode = MaximizeRestore;
 
     QRect m_geomFsRestore; //size and position of the window before it was set to fullscreen
     bool m_closing = false;
     quint32 m_windowId = 0;
     bool m_unmapped = true;
     NET::WindowType m_windowType = NET::Normal;
     QPointer<KWayland::Server::PlasmaShellSurfaceInterface> m_plasmaShellSurface;
     QPointer<KWayland::Server::AppMenuInterface> m_appMenuInterface;
     QPointer<KWayland::Server::ServerSideDecorationPaletteInterface> m_paletteInterface;
     KWayland::Server::ServerSideDecorationInterface *m_serverDecoration = nullptr;
     KWayland::Server::XdgDecorationInterface *m_xdgDecoration = nullptr;
     bool m_userNoBorder = false;
     bool m_fullScreen = false;
     bool m_transient = false;
     bool m_hidden = false;
     bool m_hasPopupGrab = false;
     qreal m_opacity = 1.0;
 
     class RequestGeometryBlocker { //TODO rename ConfigureBlocker when this class is Xdg only
     public:
         RequestGeometryBlocker(XdgShellClient *client)
             : m_client(client)
         {
             m_client->m_requestGeometryBlockCounter++;
         }
         ~RequestGeometryBlocker()
         {
             m_client->m_requestGeometryBlockCounter--;
             if (m_client->m_requestGeometryBlockCounter == 0) {
                 m_client->requestGeometry(m_client->m_blockedRequestGeometry);
             }
         }
     private:
         XdgShellClient *m_client;
     };
     friend class RequestGeometryBlocker;
     int m_requestGeometryBlockCounter = 0;
     QRect m_blockedRequestGeometry;
     QString m_caption;
     QString m_captionSuffix;
     QHash<quint32, PingReason> m_pingSerials;
 
     bool m_isInitialized = false;
 
     friend class Workspace;
 };
 
 }
 
 Q_DECLARE_METATYPE(KWin::XdgShellClient *)