forked from mirrors/gecko-dev
ed0cd338e0
GtkCompositorWidget and WindowSurfaceWayland objects are used in Compositor thread and we should hold reference to nsWindow to make sure we don't release nsWindow early. Differential Revision: https://phabricator.services.mozilla.com/D122073
78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_WAYLAND_MULTI_BUFFER_H
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#define _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_WAYLAND_MULTI_BUFFER_H
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Types.h"
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#include "mozilla/Mutex.h"
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#include "nsTArray.h"
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#include "nsWaylandDisplay.h"
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#include "nsWindow.h"
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#include "WaylandBuffer.h"
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#include "WindowSurface.h"
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namespace mozilla::widget {
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using gfx::DrawTarget;
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// WindowSurfaceWaylandMB is an abstraction for wl_surface
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// and related management
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class WindowSurfaceWaylandMB : public WindowSurface {
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public:
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explicit WindowSurfaceWaylandMB(RefPtr<nsWindow> aWindow);
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~WindowSurfaceWaylandMB() = default;
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// Lock() / Commit() are called by gecko when Firefox
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// wants to display something. Lock() returns a DrawTarget
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// where gecko paints. When gecko is done it calls Commit()
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// and we try to send the DrawTarget (backed by wl_buffer)
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// to wayland compositor.
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//
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// If we fail (wayland compositor is busy,
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// wl_surface is not created yet) we queue the painting
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// and we send it to wayland compositor in FrameCallbackHandler()/
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// FlushPendingCommits().
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already_AddRefed<DrawTarget> Lock(
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const LayoutDeviceIntRegion& aInvalidRegion) override;
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void Commit(const LayoutDeviceIntRegion& aInvalidRegion) final;
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private:
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void Commit(const MutexAutoLock& aProofOfLock,
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const LayoutDeviceIntRegion& aInvalidRegion);
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RefPtr<WaylandBufferSHM> ObtainBufferFromPool(
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const MutexAutoLock& aProofOfLock, const LayoutDeviceIntSize& aSize);
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void ReturnBufferToPool(const MutexAutoLock& aProofOfLock,
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const RefPtr<WaylandBufferSHM>& aBuffer);
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void EnforcePoolSizeLimit(const MutexAutoLock& aProofOfLock);
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void CollectPendingSurfaces(const MutexAutoLock& aProofOfLock);
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void HandlePartialUpdate(const MutexAutoLock& aProofOfLock,
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const LayoutDeviceIntRegion& aInvalidRegion);
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void IncrementBufferAge(const MutexAutoLock& aProofOfLock);
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mozilla::Mutex mSurfaceLock;
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RefPtr<nsWindow> mWindow;
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LayoutDeviceIntSize mMozContainerSize;
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RefPtr<WaylandBufferSHM> mInProgressBuffer;
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RefPtr<WaylandBufferSHM> mFrontBuffer;
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LayoutDeviceIntRegion mFrontBufferInvalidRegion;
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// buffer pool
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nsTArray<RefPtr<WaylandBufferSHM>> mInUseBuffers;
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nsTArray<RefPtr<WaylandBufferSHM>> mPendingBuffers;
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nsTArray<RefPtr<WaylandBufferSHM>> mAvailableBuffers;
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// delayed commits
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bool mFrameInProcess;
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bool mCallbackRequested;
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};
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} // namespace mozilla::widget
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#endif // _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_WAYLAND_MULTI_BUFFER_H
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