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134 lines
3.8 KiB
C++
134 lines
3.8 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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SPDX-FileCopyrightText: 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
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SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include "compositor.h"
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namespace KWin
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{
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class X11CompositorSelectionOwner;
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class X11SyncManager;
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class X11Window;
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class KWIN_EXPORT X11Compositor final : public Compositor
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{
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Q_OBJECT
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public:
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enum SuspendReason {
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NoReasonSuspend = 0,
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UserSuspend = 1 << 0,
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BlockRuleSuspend = 1 << 1,
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AllReasonSuspend = 0xff
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};
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Q_DECLARE_FLAGS(SuspendReasons, SuspendReason)
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Q_ENUM(SuspendReason)
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Q_FLAG(SuspendReasons)
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static X11Compositor *create(QObject *parent = nullptr);
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~X11Compositor() override;
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X11SyncManager *syncManager() const;
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/**
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* Toggles compositing, that is if the Compositor is suspended it will be resumed
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* and if the Compositor is active it will be suspended.
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* Invoked by keybinding (shortcut default: Shift + Alt + F12).
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*/
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void toggle();
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/**
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* @brief Suspends the Compositor if it is currently active.
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*
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* Note: it is possible that the Compositor is not able to suspend. Use isActive to check
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* whether the Compositor has been suspended.
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*
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* @return void
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* @see resume
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* @see isActive
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*/
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void suspend(SuspendReason reason);
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/**
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* @brief Resumes the Compositor if it is currently suspended.
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*
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* Note: it is possible that the Compositor cannot be resumed, that is there might be Clients
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* blocking the usage of Compositing or the Scene might be broken. Use isActive to check
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* whether the Compositor has been resumed. Also check isCompositingPossible and
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* isOpenGLBroken.
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*
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* Note: The starting of the Compositor can require some time and is partially done threaded.
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* After this method returns the setup may not have been completed.
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*
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* @return void
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* @see suspend
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* @see isActive
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* @see isCompositingPossible
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* @see isOpenGLBroken
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*/
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void resume(SuspendReason reason);
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enum class OpenGLSafePoint {
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PreInit,
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PostInit,
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PreFrame,
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PostFrame,
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PostLastGuardedFrame
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};
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/**
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* This method is invoked before and after creating the OpenGL rendering Scene.
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* An implementing Platform can use it to detect crashes triggered by the OpenGL implementation.
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* This can be used for openGLCompositingIsBroken.
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*
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* The default implementation does nothing.
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* @see openGLCompositingIsBroken.
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*/
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void createOpenGLSafePoint(OpenGLSafePoint safePoint);
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void inhibit(Window *window) override;
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void uninhibit(Window *window) override;
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void reinitialize() override;
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void configChanged() override;
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bool compositingPossible() const override;
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QString compositingNotPossibleReason() const override;
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bool openGLCompositingIsBroken() const override;
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static X11Compositor *self();
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protected:
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void start() override;
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void stop() override;
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void composite(RenderLoop *renderLoop) override;
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private:
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explicit X11Compositor(QObject *parent);
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bool attemptOpenGLCompositing();
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void releaseCompositorSelection();
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void destroyCompositorSelection();
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std::unique_ptr<QThread> m_openGLFreezeProtectionThread;
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std::unique_ptr<QTimer> m_openGLFreezeProtection;
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std::unique_ptr<X11SyncManager> m_syncManager;
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std::unique_ptr<X11CompositorSelectionOwner> m_selectionOwner;
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QTimer m_releaseSelectionTimer;
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/**
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* Whether the Compositor is currently suspended, 8 bits encoding the reason
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*/
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SuspendReasons m_suspended;
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QSet<Window *> m_inhibitors;
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int m_framesToTestForSafety = 3;
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};
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} // namespace KWin
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