b65d54f4d2
In the Wayland world we need to have a compositor. This means we have to enforce that the compositor is running. If the setup fails we have to quit, because it doesn't make any sense any more to be running. A new method requiresCompositing() is added to the Application. If it returns true the useCompositing option will always return true and the unredirect fullscreen option will always return false. That way compositing is enforced at startup and cannot end by unredirecting. In addition this method is checked if actions are performed which would suspend compositing. E.g. the shortcut to toggle compositing. Restarting the compositor is still possible in order to change the selected compositing backend without a restart. But if it fails KWin will quit.
120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
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Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef MAIN_H
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#define MAIN_H
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#include <KDE/KSelectionWatcher>
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// Qt
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#include <QApplication>
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#include <QAbstractNativeEventFilter>
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namespace KWin
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{
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class XcbEventFilter : public QAbstractNativeEventFilter
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{
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public:
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virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long int *result) override;
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};
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class KWinSelectionOwner
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: public KSelectionOwner
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{
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Q_OBJECT
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public:
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explicit KWinSelectionOwner(int screen);
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protected:
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virtual bool genericReply(xcb_atom_t target, xcb_atom_t property, xcb_window_t requestor);
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virtual void replyTargets(xcb_atom_t property, xcb_window_t requestor);
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virtual void getAtoms();
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private:
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xcb_atom_t make_selection_atom(int screen);
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static xcb_atom_t xa_version;
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};
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class Application : public QApplication
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{
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Q_OBJECT
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public:
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/**
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* @brief This enum provides the various operation modes of KWin depending on the available
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* Windowing Systems at startup. For example whether KWin only talks to X11 or also to a Wayland
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* Compositor.
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*
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*/
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enum OperationMode {
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/**
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* @brief KWin uses only X11 for managing windows and compositing
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*/
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OperationModeX11,
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/**
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* @brief KWin uses X11 for managing windows, but renders to a Wayland compositor.
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* Input is received from the Wayland compositor.
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*/
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OperationModeWaylandAndX11
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};
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Application(int &argc, char **argv);
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~Application();
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void setReplace(bool replace);
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void setConfigLock(bool lock);
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void start();
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/**
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* @brief The operation mode used by KWin.
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*
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* @return OperationMode
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*/
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OperationMode operationMode() const;
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void setOperationMode(OperationMode mode);
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bool shouldUseWaylandForCompositing() const;
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bool requiresCompositing() const;
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static void setCrashCount(int count);
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static bool wasCrash();
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protected:
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bool notify(QObject* o, QEvent* e);
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static void crashHandler(int signal);
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private Q_SLOTS:
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void lostSelection();
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void resetCrashesCount();
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private:
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void crashChecking();
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KWinSelectionOwner owner;
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QScopedPointer<XcbEventFilter> m_eventFilter;
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bool m_replace;
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bool m_configLock;
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OperationMode m_operationMode;
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static int crashes;
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};
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inline static Application *kwinApp()
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{
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return static_cast<Application*>(QCoreApplication::instance());
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}
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} // namespace
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#endif
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