diff --git a/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp b/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
index a77261a54..6404ba006 100644
--- a/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
+++ b/kcmkwin/kwindecoration/declarative-plugin/previewitem.cpp
@@ -1,395 +1,396 @@
 /*
  * Copyright 2014  Martin Gräßlin <mgraesslin@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) version 3 or any later version
  * accepted by the membership of KDE e.V. (or its successor approved
  * by the membership of KDE e.V.), which shall act as a proxy
  * defined in Section 14 of version 3 of the license.
  *
  * 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 "previewitem.h"
 #include "previewbridge.h"
 #include "previewsettings.h"
 #include "previewclient.h"
 #include <KDecoration2/Decoration>
 #include <KDecoration2/DecorationSettings>
 #include <KDecoration2/DecorationShadow>
 #include <KDecoration2/DecoratedClient>
+#include <QCoreApplication>
 #include <QCursor>
 #include <QPainter>
 #include <QQmlContext>
 #include <QQmlEngine>
 
 #include <QDebug>
 
 namespace KDecoration2
 {
 namespace Preview
 {
 
 PreviewItem::PreviewItem(QQuickItem *parent)
     : QQuickPaintedItem(parent)
     , m_decoration(nullptr)
     , m_windowColor(QPalette().background().color())
 {
     setAcceptHoverEvents(true);
     setFiltersChildMouseEvents(true);
     setAcceptedMouseButtons(Qt::MouseButtons(~Qt::NoButton));
     connect(this, &PreviewItem::widthChanged, this, &PreviewItem::syncSize);
     connect(this, &PreviewItem::heightChanged, this, &PreviewItem::syncSize);
     connect(this, &PreviewItem::bridgeChanged, this, &PreviewItem::createDecoration);
     connect(this, &PreviewItem::settingsChanged, this, &PreviewItem::createDecoration);
 }
 
 PreviewItem::~PreviewItem()
 {
     m_decoration->deleteLater();
     if (m_bridge){
         m_bridge->unregisterPreviewItem(this);
     }
 }
 
 void PreviewItem::componentComplete()
 {
     QQuickPaintedItem::componentComplete();
     createDecoration();
     if (m_decoration) {
         m_decoration->setSettings(m_settings->settings());
         m_decoration->init();
         syncSize();
     }
 }
 
 void PreviewItem::createDecoration()
 {
     if (m_bridge.isNull() || m_settings.isNull() || m_decoration) {
         return;
     }
     m_decoration = m_bridge->createDecoration(0);
     if (!m_decoration) {
         return;
     }
     m_decoration->setProperty("visualParent", QVariant::fromValue(this));
     m_client = m_bridge->lastCreatedClient();
     connect(m_decoration, &Decoration::bordersChanged, this, &PreviewItem::syncSize);
     connect(m_decoration, &Decoration::shadowChanged, this, &PreviewItem::syncSize);
     emit decorationChanged(m_decoration);
 }
 
 Decoration *PreviewItem::decoration() const
 {
     return m_decoration;
 }
 
 void PreviewItem::setDecoration(Decoration *deco)
 {
     if (m_decoration == deco) {
         return;
     }
     auto updateSlot = static_cast<void (QQuickItem::*)()>(&QQuickItem::update);
     if (m_decoration) {
         disconnect(m_decoration, &Decoration::bordersChanged, this, updateSlot);
     }
     m_decoration = deco;
     m_decoration->setProperty("visualParent", QVariant::fromValue(this));
     connect(m_decoration, &Decoration::bordersChanged, this, updateSlot);
     connect(m_decoration, &Decoration::sectionUnderMouseChanged, this,
         [this](Qt::WindowFrameSection section) {
             switch (section) {
                 case Qt::TopRightSection:
             case Qt::BottomLeftSection:
                 setCursor(Qt::SizeBDiagCursor);
                 return;
             case Qt::TopLeftSection:
             case Qt::BottomRightSection:
                 setCursor(Qt::SizeFDiagCursor);
                 return;
             case Qt::TopSection:
             case Qt::BottomSection:
                 setCursor(Qt::SizeVerCursor);
                 return;
             case Qt::LeftSection:
             case Qt::RightSection:
                 setCursor(Qt::SizeHorCursor);
                 return;
             default:
                 setCursor(Qt::ArrowCursor);
             }
         }
     );
     connect(m_decoration, &KDecoration2::Decoration::shadowChanged, this, &PreviewItem::shadowChanged);
     emit decorationChanged(m_decoration);
 }
 
 QColor PreviewItem::windowColor() const
 {
     return m_windowColor;
 }
 
 void PreviewItem::setWindowColor(const QColor &color)
 {
     if (m_windowColor == color) {
         return;
     }
     m_windowColor = color;
     emit windowColorChanged(m_windowColor);
     update();
 }
 
 void PreviewItem::paint(QPainter *painter)
 {
     if (!m_decoration) {
         return;
     }
     int paddingLeft   = 0;
     int paddingTop    = 0;
     int paddingRight  = 0;
     int paddingBottom = 0;
     paintShadow(painter, paddingLeft, paddingRight, paddingTop, paddingBottom);
     m_decoration->paint(painter, QRect(0, 0, width(), height()));
     if (m_drawBackground) {
         painter->fillRect(m_decoration->borderLeft(), m_decoration->borderTop(),
                         width() - m_decoration->borderLeft() - m_decoration->borderRight() - paddingLeft - paddingRight,
                         height() - m_decoration->borderTop() - m_decoration->borderBottom() - paddingTop - paddingBottom,
                         m_windowColor);
     }
 }
 
 void PreviewItem::paintShadow(QPainter *painter, int &paddingLeft, int &paddingRight, int &paddingTop, int &paddingBottom)
 {
     const auto &shadow = ((const Decoration*)(m_decoration))->shadow();
     if (!shadow) {
         return;
     }
     paddingLeft   = shadow->paddingLeft();
     paddingTop    = shadow->paddingTop();
     paddingRight  = shadow->paddingRight();
     paddingBottom = shadow->paddingBottom();
     const QImage img = shadow->shadow();
     if (img.isNull()) {
         return;
     }
     const QRect &topLeft     = shadow->topLeftGeometry();
     const QRect &top         = shadow->topGeometry();
     const QRect &topRight    = shadow->topRightGeometry();
     const QRect &right       = shadow->rightGeometry();
     const QRect &left        = shadow->leftGeometry();
     const QRect &bottomLeft  = shadow->bottomLeftGeometry();
     const QRect &bottom      = shadow->bottomGeometry();
     const QRect &bottomRight = shadow->bottomRightGeometry();
 
     painter->translate(paddingLeft, paddingTop);
 
     // top left
     painter->drawImage(QPoint(-paddingLeft, -paddingTop), img, topLeft);
     // top
     painter->drawImage(QRect(-paddingLeft + topLeft.width(), -paddingTop, width() - topLeft.width() - topRight.width(), top.height()), img, top);
     // top right
     painter->drawImage(QPoint(width() - topRight.width() - paddingLeft, -paddingTop), img, topRight);
     // right
     painter->drawImage(QRect(width() - right.width() - paddingLeft, -paddingTop + topRight.height(), right.width(), height() - topRight.height() - bottomRight.height()), img, right);
     // bottom right
     painter->drawImage(QPoint(width() - paddingLeft - bottomRight.width(), height() - paddingTop - bottomRight.height()), img, bottomRight);
     // bottom
     painter->drawImage(QRect(-paddingLeft + bottomLeft.width(), height() - bottom.height() - paddingTop, width() - bottomLeft.width() - bottomRight.width(), bottom.height()), img, bottom);
     // bottom left
     painter->drawImage(QPoint(-paddingLeft, height() - bottomLeft.height() - paddingTop), img, bottomLeft);
     // left
     painter->drawImage(QRect(-paddingLeft, -paddingTop + topLeft.height(), left.width(), height() - topLeft.height() - bottomLeft.height()), img, left);
 }
 
 void PreviewItem::mouseDoubleClickEvent(QMouseEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QMouseEvent e(event->type(),
                       event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->button(),
                       event->buttons(),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::mousePressEvent(QMouseEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QMouseEvent e(event->type(),
                       event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->button(),
                       event->buttons(),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::mouseReleaseEvent(QMouseEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QMouseEvent e(event->type(),
                       event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->button(),
                       event->buttons(),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::mouseMoveEvent(QMouseEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QMouseEvent e(event->type(),
                       event->localPos() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->button(),
                       event->buttons(),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::hoverEnterEvent(QHoverEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QHoverEvent e(event->type(),
                       event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::hoverLeaveEvent(QHoverEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QHoverEvent e(event->type(),
                       event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 void PreviewItem::hoverMoveEvent(QHoverEvent *event)
 {
     const auto &shadow = m_decoration->shadow();
     if (shadow) {
         QHoverEvent e(event->type(),
                       event->posF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->oldPosF() - QPointF(shadow->paddingLeft(), shadow->paddingTop()),
                       event->modifiers());
         QCoreApplication::instance()->sendEvent(decoration(), &e);
     } else {
         QCoreApplication::instance()->sendEvent(decoration(), event);
     }
 }
 
 bool PreviewItem::isDrawingBackground() const
 {
     return m_drawBackground;
 }
 
 void PreviewItem::setDrawingBackground(bool set)
 {
     if (m_drawBackground == set) {
         return;
     }
     m_drawBackground = set;
     emit drawingBackgroundChanged(set);
 }
 
 PreviewBridge *PreviewItem::bridge() const
 {
     return m_bridge.data();
 }
 
 void PreviewItem::setBridge(PreviewBridge *bridge)
 {
     if (m_bridge == bridge) {
         return;
     }
     if (m_bridge) {
         m_bridge->unregisterPreviewItem(this);
     }
     m_bridge = bridge;
     if (m_bridge) {
         m_bridge->registerPreviewItem(this);
     }
     emit bridgeChanged();
 }
 
 Settings *PreviewItem::settings() const
 {
     return m_settings.data();
 }
 
 void PreviewItem::setSettings(Settings *settings)
 {
     if (m_settings == settings) {
         return;
     }
     m_settings = settings;
     emit settingsChanged();
 }
 
 PreviewClient *PreviewItem::client()
 {
     return m_client.data();
 }
 
 void PreviewItem::syncSize()
 {
     if (!m_client) {
         return;
     }
     int widthOffset = 0;
     int heightOffset = 0;
     auto shadow = m_decoration->shadow();
     if (shadow) {
         widthOffset = shadow->paddingLeft() + shadow->paddingRight();
         heightOffset = shadow->paddingTop() + shadow->paddingBottom();
     }
     m_client->setWidth(width() - m_decoration->borderLeft() - m_decoration->borderRight() - widthOffset);
     m_client->setHeight(height() - m_decoration->borderTop() - m_decoration->borderBottom() - heightOffset);
 }
 
 DecorationShadow *PreviewItem::shadow() const
 {
     if (!m_decoration) {
         return nullptr;
     }
     const auto &s = m_decoration->shadow();
     if (!s) {
         return nullptr;
     }
     return s.data();
 }
 
 }
 }