File indexing completed on 2024-04-28 16:48:46

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
     SPDX-FileCopyrightText: 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "kwineffects.h"
 
 #include "kwinoffscreenquickview.h"
 #include "scene/workspacescene.h"
 
 #include <QFont>
 #include <QHash>
 
 #include <memory>
 
 class QMouseEvent;
 class QWheelEvent;
 
 namespace KWaylandServer
 {
 class Display;
 }
 
 class QDBusPendingCallWatcher;
 class QDBusServiceWatcher;
 
 namespace KWin
 {
 class Window;
 class Compositor;
 class Deleted;
 class EffectLoader;
 class Group;
 class Unmanaged;
 class WindowPropertyNotifyX11Filter;
 class TabletEvent;
 class TabletPadId;
 class TabletToolId;
 
 class KWIN_EXPORT EffectsHandlerImpl : public EffectsHandler
 {
     Q_OBJECT
     Q_CLASSINFO("D-Bus Interface", "org.kde.kwin.Effects")
     Q_PROPERTY(QStringList activeEffects READ activeEffects)
     Q_PROPERTY(QStringList loadedEffects READ loadedEffects)
     Q_PROPERTY(QStringList listOfEffects READ listOfEffects)
 public:
     EffectsHandlerImpl(Compositor *compositor, WorkspaceScene *scene);
     ~EffectsHandlerImpl() override;
     void prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime) override;
     void paintScreen(int mask, const QRegion &region, ScreenPaintData &data) override;
     void postPaintScreen() override;
     void prePaintWindow(EffectWindow *w, WindowPrePaintData &data, std::chrono::milliseconds presentTime) override;
     void paintWindow(EffectWindow *w, int mask, const QRegion &region, WindowPaintData &data) override;
     void postPaintWindow(EffectWindow *w) override;
 
     Effect *provides(Effect::Feature ef);
 
     void drawWindow(EffectWindow *w, int mask, const QRegion &region, WindowPaintData &data) override;
     void renderWindow(EffectWindow *w, int mask, const QRegion &region, WindowPaintData &data) override;
 
     void activateWindow(EffectWindow *c) override;
     EffectWindow *activeWindow() const override;
     void moveWindow(EffectWindow *w, const QPoint &pos, bool snap = false, double snapAdjust = 1.0) override;
     void windowToDesktop(EffectWindow *w, int desktop) override;
     void windowToScreen(EffectWindow *w, EffectScreen *screen) override;
     void setShowingDesktop(bool showing) override;
 
     QString currentActivity() const override;
     int currentDesktop() const override;
     int numberOfDesktops() const override;
     void setCurrentDesktop(int desktop) override;
     void setNumberOfDesktops(int desktops) override;
     QSize desktopGridSize() const override;
     int desktopGridWidth() const override;
     int desktopGridHeight() const override;
     int workspaceWidth() const override;
     int workspaceHeight() const override;
     int desktopAtCoords(QPoint coords) const override;
     QPoint desktopGridCoords(int id) const override;
     QPoint desktopCoords(int id) const override;
     int desktopAbove(int desktop = 0, bool wrap = true) const override;
     int desktopToRight(int desktop = 0, bool wrap = true) const override;
     int desktopBelow(int desktop = 0, bool wrap = true) const override;
     int desktopToLeft(int desktop = 0, bool wrap = true) const override;
     QString desktopName(int desktop) const override;
     bool optionRollOverDesktops() const override;
 
     QPoint cursorPos() const override;
     bool grabKeyboard(Effect *effect) override;
     void ungrabKeyboard() override;
     // not performing XGrabPointer
     void startMouseInterception(Effect *effect, Qt::CursorShape shape) override;
     void stopMouseInterception(Effect *effect) override;
     bool isMouseInterception() const;
     void registerPointerShortcut(Qt::KeyboardModifiers modifiers, Qt::MouseButton pointerButtons, QAction *action) override;
     void registerAxisShortcut(Qt::KeyboardModifiers modifiers, PointerAxisDirection axis, QAction *action) override;
     void registerRealtimeTouchpadSwipeShortcut(SwipeDirection dir, uint fingerCount, QAction *onUp, std::function<void(qreal)> progressCallback) override;
     void registerTouchpadSwipeShortcut(SwipeDirection direction, uint fingerCount, QAction *action) override;
     void registerRealtimeTouchpadPinchShortcut(PinchDirection dir, uint fingerCount, QAction *onUp, std::function<void(qreal)> progressCallback) override;
     void registerTouchpadPinchShortcut(PinchDirection direction, uint fingerCount, QAction *action) override;
     void registerTouchscreenSwipeShortcut(SwipeDirection direction, uint fingerCount, QAction *action, std::function<void(qreal)> progressCallback) override;
     void *getProxy(QString name) override;
     void startMousePolling() override;
     void stopMousePolling() override;
     EffectWindow *findWindow(WId id) const override;
     EffectWindow *findWindow(KWaylandServer::SurfaceInterface *surf) const override;
     EffectWindow *findWindow(QWindow *w) const override;
     EffectWindow *findWindow(const QUuid &id) const override;
     EffectWindowList stackingOrder() const override;
     void setElevatedWindow(KWin::EffectWindow *w, bool set) override;
 
     void setTabBoxWindow(EffectWindow *) override;
     void setTabBoxDesktop(int) override;
     EffectWindowList currentTabBoxWindowList() const override;
     void refTabBox() override;
     void unrefTabBox() override;
     void closeTabBox() override;
     QList<int> currentTabBoxDesktopList() const override;
     int currentTabBoxDesktop() const override;
     EffectWindow *currentTabBoxWindow() const override;
 
     void setActiveFullScreenEffect(Effect *e) override;
     Effect *activeFullScreenEffect() const override;
     bool hasActiveFullScreenEffect() const override;
 
     void addRepaintFull() override;
     void addRepaint(const QRect &r) override;
     void addRepaint(const QRectF &r) override;
 
     void addRepaint(const QRegion &r) override;
     void addRepaint(int x, int y, int w, int h) override;
     EffectScreen *activeScreen() const override;
     QRectF clientArea(clientAreaOption, const EffectScreen *screen, int desktop) const override;
     QRectF clientArea(clientAreaOption, const EffectWindow *c) const override;
     QRectF clientArea(clientAreaOption, const QPoint &p, int desktop) const override;
     QSize virtualScreenSize() const override;
     QRect virtualScreenGeometry() const override;
     double animationTimeFactor() const override;
 
     void defineCursor(Qt::CursorShape shape) override;
     bool checkInputWindowEvent(QMouseEvent *e);
     bool checkInputWindowEvent(QWheelEvent *e);
     void checkInputWindowStacking();
 
     void reserveElectricBorder(ElectricBorder border, Effect *effect) override;
     void unreserveElectricBorder(ElectricBorder border, Effect *effect) override;
 
     void registerTouchBorder(ElectricBorder border, QAction *action) override;
     void registerRealtimeTouchBorder(ElectricBorder border, QAction *action, EffectsHandler::TouchBorderCallback progressCallback) override;
     void unregisterTouchBorder(ElectricBorder border, QAction *action) override;
 
     QPainter *scenePainter() override;
     void reconfigure() override;
     QByteArray readRootProperty(long atom, long type, int format) const override;
     xcb_atom_t announceSupportProperty(const QByteArray &propertyName, Effect *effect) override;
     void removeSupportProperty(const QByteArray &propertyName, Effect *effect) override;
 
     bool hasDecorationShadows() const override;
 
     bool decorationsHaveAlpha() const override;
 
     std::unique_ptr<EffectFrame> effectFrame(EffectFrameStyle style, bool staticSize, const QPoint &position, Qt::Alignment alignment) const override;
 
     QVariant kwinOption(KWinOption kwopt) override;
     bool isScreenLocked() const override;
 
     bool makeOpenGLContextCurrent() override;
     void doneOpenGLContextCurrent() override;
 
     xcb_connection_t *xcbConnection() const override;
     xcb_window_t x11RootWindow() const override;
 
     // internal (used by kwin core or compositing code)
     void startPaint();
     void grabbedKeyboardEvent(QKeyEvent *e);
     bool hasKeyboardGrab() const;
 
     void reloadEffect(Effect *effect) override;
     QStringList loadedEffects() const;
     QStringList listOfEffects() const;
     void unloadAllEffects();
 
     QList<EffectWindow *> elevatedWindows() const;
     QStringList activeEffects() const;
 
     /**
      * @returns whether or not any effect is currently active where KWin should not use direct scanout
      */
     bool blocksDirectScanout() const;
 
     KWaylandServer::Display *waylandDisplay() const override;
 
     bool animationsSupported() const override;
 
     PlatformCursorImage cursorImage() const override;
 
     void hideCursor() override;
     void showCursor() override;
 
     void startInteractiveWindowSelection(std::function<void(KWin::EffectWindow *)> callback) override;
     void startInteractivePositionSelection(std::function<void(const QPoint &)> callback) override;
 
     void showOnScreenMessage(const QString &message, const QString &iconName = QString()) override;
     void hideOnScreenMessage(OnScreenMessageHideFlags flags = OnScreenMessageHideFlags()) override;
 
     KSharedConfigPtr config() const override;
     KSharedConfigPtr inputConfig() const override;
 
     WorkspaceScene *scene() const
     {
         return m_scene;
     }
 
     bool touchDown(qint32 id, const QPointF &pos, std::chrono::microseconds time);
     bool touchMotion(qint32 id, const QPointF &pos, std::chrono::microseconds time);
     bool touchUp(qint32 id, std::chrono::microseconds time);
 
     bool tabletToolEvent(KWin::TabletEvent *event);
     bool tabletToolButtonEvent(uint button, bool pressed, const KWin::TabletToolId &tabletToolId, std::chrono::microseconds time);
     bool tabletPadButtonEvent(uint button, bool pressed, const KWin::TabletPadId &tabletPadId, std::chrono::microseconds time);
     bool tabletPadStripEvent(int number, int position, bool isFinger, const KWin::TabletPadId &tabletPadId, std::chrono::microseconds time);
     bool tabletPadRingEvent(int number, int position, bool isFinger, const KWin::TabletPadId &tabletPadId, std::chrono::microseconds time);
 
     void highlightWindows(const QVector<EffectWindow *> &windows);
 
     bool isPropertyTypeRegistered(xcb_atom_t atom) const
     {
         return registered_atoms.contains(atom);
     }
 
     void windowToDesktops(EffectWindow *w, const QVector<uint> &desktops) override;
 
     /**
      * Finds an effect with the given name.
      *
      * @param name The name of the effect.
      * @returns The effect with the given name @p name, or nullptr if there
      *     is no such effect loaded.
      */
     Effect *findEffect(const QString &name) const;
 
     void renderOffscreenQuickView(OffscreenQuickView *effectQuickView) const override;
 
     SessionState sessionState() const override;
     QList<EffectScreen *> screens() const override;
     EffectScreen *screenAt(const QPoint &point) const override;
     EffectScreen *findScreen(const QString &name) const override;
     EffectScreen *findScreen(int screenId) const override;
     void renderScreen(EffectScreen *screen) override;
     bool isCursorHidden() const override;
     QRect renderTargetRect() const override;
     qreal renderTargetScale() const override;
 
     KWin::EffectWindow *inputPanel() const override;
     bool isInputPanelOverlay() const override;
 
 public Q_SLOTS:
     void slotCurrentTabAboutToChange(EffectWindow *from, EffectWindow *to);
     void slotTabAdded(EffectWindow *from, EffectWindow *to);
     void slotTabRemoved(EffectWindow *c, EffectWindow *newActiveWindow);
 
     // slots for D-Bus interface
     Q_SCRIPTABLE void reconfigureEffect(const QString &name);
     Q_SCRIPTABLE bool loadEffect(const QString &name);
     Q_SCRIPTABLE void toggleEffect(const QString &name);
     Q_SCRIPTABLE void unloadEffect(const QString &name);
     Q_SCRIPTABLE bool isEffectLoaded(const QString &name) const;
     Q_SCRIPTABLE bool isEffectSupported(const QString &name);
     Q_SCRIPTABLE QList<bool> areEffectsSupported(const QStringList &names);
     Q_SCRIPTABLE QString supportInformation(const QString &name) const;
     Q_SCRIPTABLE QString debug(const QString &name, const QString &parameter = QString()) const;
 
 protected Q_SLOTS:
     void slotWindowShown(KWin::Window *);
     void slotUnmanagedShown(KWin::Window *);
     void slotWindowClosed(KWin::Window *original, KWin::Deleted *d);
     void slotClientMaximized(KWin::Window *window, MaximizeMode maxMode);
     void slotOpacityChanged(KWin::Window *window, qreal oldOpacity);
     void slotClientModalityChanged();
     void slotGeometryShapeChanged(KWin::Window *window, const QRectF &old);
     void slotFrameGeometryChanged(Window *window, const QRectF &oldGeometry);
     void slotWindowDamaged(KWin::Window *window);
     void slotOutputAdded(Output *output);
     void slotOutputRemoved(Output *output);
 
 protected:
     void connectNotify(const QMetaMethod &signal) override;
     void disconnectNotify(const QMetaMethod &signal) override;
     void effectsChanged();
     void setupWindowConnections(KWin::Window *window);
     void setupUnmanagedConnections(KWin::Unmanaged *u);
 
     /**
      * Default implementation does nothing and returns @c true.
      */
     virtual bool doGrabKeyboard();
     /**
      * Default implementation does nothing.
      */
     virtual void doUngrabKeyboard();
 
     /**
      * Default implementation sets Effects override cursor on the PointerInputRedirection.
      */
     virtual void doStartMouseInterception(Qt::CursorShape shape);
 
     /**
      * Default implementation removes the Effects override cursor on the PointerInputRedirection.
      */
     virtual void doStopMouseInterception();
 
     /**
      * Default implementation does nothing
      */
     virtual void doCheckInputWindowStacking();
 
     Effect *keyboard_grab_effect;
     Effect *fullscreen_effect;
     QList<EffectWindow *> elevated_windows;
     QMultiMap<int, EffectPair> effect_order;
     QHash<long, int> registered_atoms;
 
 private:
     void registerPropertyType(long atom, bool reg);
     void destroyEffect(Effect *effect);
 
     typedef QVector<Effect *> EffectsList;
     typedef EffectsList::const_iterator EffectsIterator;
     EffectsList m_activeEffects;
     EffectsIterator m_currentDrawWindowIterator;
     EffectsIterator m_currentPaintWindowIterator;
     EffectsIterator m_currentPaintScreenIterator;
     typedef QHash<QByteArray, QList<Effect *>> PropertyEffectMap;
     PropertyEffectMap m_propertiesForEffects;
     QHash<QByteArray, qulonglong> m_managedProperties;
     Compositor *m_compositor;
     WorkspaceScene *m_scene;
     QList<Effect *> m_grabbedMouseEffects;
     EffectLoader *m_effectLoader;
     int m_trackingCursorChanges;
     std::unique_ptr<WindowPropertyNotifyX11Filter> m_x11WindowPropertyNotify;
     QList<EffectScreen *> m_effectScreens;
 };
 
 class EffectScreenImpl : public EffectScreen
 {
     Q_OBJECT
 
 public:
     explicit EffectScreenImpl(Output *output, QObject *parent = nullptr);
     ~EffectScreenImpl() override;
 
     Output *platformOutput() const;
 
     QString name() const override;
     QString manufacturer() const override;
     QString model() const override;
     QString serialNumber() const override;
     qreal devicePixelRatio() const override;
     QRect geometry() const override;
     int refreshRate() const override;
     Transform transform() const override;
 
     static EffectScreenImpl *get(Output *output);
 
 private:
     QPointer<Output> m_platformOutput;
 };
 
 class EffectWindowImpl : public EffectWindow
 {
     Q_OBJECT
 public:
     explicit EffectWindowImpl(Window *window);
     ~EffectWindowImpl() override;
 
     void addRepaint(const QRect &r) override;
     void addRepaintFull() override;
     void addLayerRepaint(const QRect &r) override;
 
     void refWindow() override;
     void unrefWindow() override;
 
     const EffectWindowGroup *group() const override;
 
     bool isDeleted() const override;
     bool isMinimized() const override;
     bool isHidden() const override;
     double opacity() const override;
 
     QStringList activities() const override;
     int desktop() const override;
     QVector<uint> desktops() const override;
     qreal x() const override;
     qreal y() const override;
     qreal width() const override;
     qreal height() const override;
 
     QSizeF basicUnit() const override;
     QRectF geometry() const override;
     QRectF frameGeometry() const override;
     QRectF bufferGeometry() const override;
     QRectF clientGeometry() const override;
 
     QString caption() const override;
 
     QRectF expandedGeometry() const override;
     EffectScreen *screen() const override;
     QPointF pos() const override;
     QSizeF size() const override;
     QRectF rect() const override;
 
     bool isMovable() const override;
     bool isMovableAcrossScreens() const override;
     bool isUserMove() const override;
     bool isUserResize() const override;
     QRectF iconGeometry() const override;
 
     bool isDesktop() const override;
     bool isDock() const override;
     bool isToolbar() const override;
     bool isMenu() const override;
     bool isNormalWindow() const override;
     bool isSpecialWindow() const override;
     bool isDialog() const override;
     bool isSplash() const override;
     bool isUtility() const override;
     bool isDropdownMenu() const override;
     bool isPopupMenu() const override;
     bool isTooltip() const override;
     bool isNotification() const override;
     bool isCriticalNotification() const override;
     bool isAppletPopup() const override;
     bool isOnScreenDisplay() const override;
     bool isComboBox() const override;
     bool isDNDIcon() const override;
     bool skipsCloseAnimation() const override;
 
     bool acceptsFocus() const override;
     bool keepAbove() const override;
     bool keepBelow() const override;
     bool isModal() const override;
     bool isPopupWindow() const override;
     bool isOutline() const override;
     bool isLockScreen() const override;
 
     KWaylandServer::SurfaceInterface *surface() const override;
     bool isFullScreen() const override;
     bool isUnresponsive() const override;
 
     QRectF contentsRect() const override;
     bool decorationHasAlpha() const override;
     QIcon icon() const override;
     QString windowClass() const override;
     NET::WindowType windowType() const override;
     bool isSkipSwitcher() const override;
     bool isCurrentTab() const override;
     QString windowRole() const override;
 
     bool isManaged() const override;
     bool isWaylandClient() const override;
     bool isX11Client() const override;
 
     pid_t pid() const override;
     qlonglong windowId() const override;
     QUuid internalId() const override;
 
     QRectF decorationInnerRect() const override;
     KDecoration2::Decoration *decoration() const override;
     QByteArray readProperty(long atom, long type, int format) const override;
     void deleteProperty(long atom) const override;
 
     EffectWindow *findModal() override;
     EffectWindow *transientFor() override;
     EffectWindowList mainWindows() const override;
 
     void minimize() override;
     void unminimize() override;
     void closeWindow() override;
 
     void referencePreviousWindowPixmap() override;
     void unreferencePreviousWindowPixmap() override;
 
     QWindow *internalWindow() const override;
 
     const Window *window() const;
     Window *window();
 
     void setWindow(Window *w); // internal
     void setWindowItem(WindowItem *item); // internal
     WindowItem *windowItem() const; // internal
 
     void elevate(bool elevate);
 
     void setData(int role, const QVariant &data) override;
     QVariant data(int role) const override;
 
 private:
     void refVisible(const EffectWindowVisibleRef *holder) override;
     void unrefVisible(const EffectWindowVisibleRef *holder) override;
 
     Window *m_window;
     WindowItem *m_windowItem; // This one is used only during paint pass.
     QHash<int, QVariant> dataMap;
     bool managed = false;
     bool m_waylandWindow;
     bool m_x11Window;
 };
 
 class EffectWindowGroupImpl
     : public EffectWindowGroup
 {
 public:
     explicit EffectWindowGroupImpl(Group *g);
     EffectWindowList members() const override;
 
 private:
     Group *group;
 };
 
 class EffectFrameQuickScene : public OffscreenQuickScene
 {
     Q_OBJECT
 
     Q_PROPERTY(QFont font READ font NOTIFY fontChanged)
     Q_PROPERTY(QIcon icon READ icon NOTIFY iconChanged)
     Q_PROPERTY(QSize iconSize READ iconSize NOTIFY iconSizeChanged)
     Q_PROPERTY(QString text READ text NOTIFY textChanged)
     Q_PROPERTY(qreal frameOpacity READ frameOpacity NOTIFY frameOpacityChanged)
     Q_PROPERTY(bool crossFadeEnabled READ crossFadeEnabled NOTIFY crossFadeEnabledChanged)
     Q_PROPERTY(qreal crossFadeProgress READ crossFadeProgress NOTIFY crossFadeProgressChanged)
 
 public:
     EffectFrameQuickScene(EffectFrameStyle style, bool staticSize, QPoint position,
                           Qt::Alignment alignment, QObject *parent = nullptr);
     ~EffectFrameQuickScene() override;
 
     EffectFrameStyle style() const;
     bool isStatic() const;
 
     // has to be const-ref to match EffectFrameImpl...
     const QFont &font() const;
     void setFont(const QFont &font);
     Q_SIGNAL void fontChanged(const QFont &font);
 
     const QIcon &icon() const;
     void setIcon(const QIcon &icon);
     Q_SIGNAL void iconChanged(const QIcon &icon);
 
     const QSize &iconSize() const;
     void setIconSize(const QSize &iconSize);
     Q_SIGNAL void iconSizeChanged(const QSize &iconSize);
 
     const QString &text() const;
     void setText(const QString &text);
     Q_SIGNAL void textChanged(const QString &text);
 
     qreal frameOpacity() const;
     void setFrameOpacity(qreal frameOpacity);
     Q_SIGNAL void frameOpacityChanged(qreal frameOpacity);
 
     bool crossFadeEnabled() const;
     void setCrossFadeEnabled(bool enabled);
     Q_SIGNAL void crossFadeEnabledChanged(bool enabled);
 
     qreal crossFadeProgress() const;
     void setCrossFadeProgress(qreal progress);
     Q_SIGNAL void crossFadeProgressChanged(qreal progress);
 
     Qt::Alignment alignment() const;
     void setAlignment(Qt::Alignment alignment);
 
     QPoint position() const;
     void setPosition(const QPoint &point);
 
 private:
     void reposition();
 
     EffectFrameStyle m_style;
 
     // Position
     bool m_static;
     QPoint m_point;
     Qt::Alignment m_alignment;
 
     // Contents
     QFont m_font;
     QIcon m_icon;
     QSize m_iconSize;
     QString m_text;
     qreal m_frameOpacity = 0.0;
     bool m_crossFadeEnabled = false;
     qreal m_crossFadeProgress = 0.0;
 };
 
 class KWIN_EXPORT EffectFrameImpl
     : public QObject,
       public EffectFrame
 {
     Q_OBJECT
 public:
     explicit EffectFrameImpl(EffectFrameStyle style, bool staticSize = true, QPoint position = QPoint(-1, -1),
                              Qt::Alignment alignment = Qt::AlignCenter);
     ~EffectFrameImpl() override;
 
     void free() override;
     void render(const QRegion &region = infiniteRegion(), double opacity = 1.0, double frameOpacity = 1.0) override;
     Qt::Alignment alignment() const override;
     void setAlignment(Qt::Alignment alignment) override;
     const QFont &font() const override;
     void setFont(const QFont &font) override;
     const QRect &geometry() const override;
     void setGeometry(const QRect &geometry, bool force = false) override;
     const QIcon &icon() const override;
     void setIcon(const QIcon &icon) override;
     const QSize &iconSize() const override;
     void setIconSize(const QSize &size) override;
     void setPosition(const QPoint &point) override;
     const QString &text() const override;
     void setText(const QString &text) override;
     EffectFrameStyle style() const override;
     bool isCrossFade() const override;
     void enableCrossFade(bool enable) override;
     qreal crossFadeProgress() const override;
     void setCrossFadeProgress(qreal progress) override;
 
 private:
     Q_DISABLE_COPY(EffectFrameImpl) // As we need to use Qt slots we cannot copy this class
 
     EffectFrameQuickScene *m_view;
     QRect m_geometry;
 };
 
 inline QList<EffectWindow *> EffectsHandlerImpl::elevatedWindows() const
 {
     if (isScreenLocked()) {
         return QList<EffectWindow *>();
     }
     return elevated_windows;
 }
 
 inline xcb_window_t EffectsHandlerImpl::x11RootWindow() const
 {
     return kwinApp()->x11RootWindow();
 }
 
 inline xcb_connection_t *EffectsHandlerImpl::xcbConnection() const
 {
     return kwinApp()->x11Connection();
 }
 
 inline EffectWindowGroupImpl::EffectWindowGroupImpl(Group *g)
     : group(g)
 {
 }
 
 inline WindowItem *EffectWindowImpl::windowItem() const
 {
     return m_windowItem;
 }
 
 inline const Window *EffectWindowImpl::window() const
 {
     return m_window;
 }
 
 inline Window *EffectWindowImpl::window()
 {
     return m_window;
 }
 
 } // namespace