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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H
#define _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H
#include <gdk/gdk.h>
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Types.h"
#include "mozilla/layers/LayersTypes.h"
#include "mozilla/widget/WindowSurface.h"
#include "Units.h"
#include "mozilla/ScopeExit.h"
#ifdef MOZ_X11
# include <X11/Xlib.h> // for Window, Display, Visual, etc.
# include "X11UndefineNone.h"
#endif
class nsWindow;
namespace mozilla {
namespace widget {
class GtkCompositorWidget;
/*
* Holds the logic for creating WindowSurface's for a GTK nsWindow.
* The main purpose of this class is to allow sharing of logic between
* nsWindow and GtkCompositorWidget, for when OMTC is enabled or disabled.
*/
class WindowSurfaceProvider final {
public:
WindowSurfaceProvider();
~WindowSurfaceProvider();
/**
* Initializes the WindowSurfaceProvider by giving it the window
* handle and display to attach to. WindowSurfaceProvider doesn't
* own the Display, Window, etc, and they must continue to exist
* while WindowSurfaceProvider is used.
*/
#ifdef MOZ_WAYLAND
bool Initialize(RefPtr<nsWindow> aWidget);
bool Initialize(GtkCompositorWidget* aCompositorWidget);
#endif
#ifdef MOZ_X11
bool Initialize(Window aWindow, bool aIsShaped);
Window GetXWindow() const { return mXWindow; }
#endif
/**
* Releases any surfaces created by this provider.
* This is used by GtkCompositorWidget to get rid
* of resources.
*/
void CleanupResources();
already_AddRefed<gfx::DrawTarget> StartRemoteDrawingInRegion(
const LayoutDeviceIntRegion& aInvalidRegion,
layers::BufferMode* aBufferMode);
void EndRemoteDrawingInRegion(gfx::DrawTarget* aDrawTarget,
const LayoutDeviceIntRegion& aInvalidRegion);
private:
RefPtr<WindowSurface> CreateWindowSurface();
void CleanupWindowSurface();
RefPtr<WindowSurface> mWindowSurface;
/* While CleanupResources() can be called from Main thread when nsWindow is
* destroyed/hidden, StartRemoteDrawingInRegion()/EndRemoteDrawingInRegion()
* is called from Compositor thread during rendering.
*
* As nsWindow CleanupResources() call comes from Gtk/X11 we can't synchronize
* that with WebRender so we use lock to synchronize the access.
*/
mozilla::Mutex mMutex MOZ_UNANNOTATED;
// WindowSurface needs to be re-created as underlying window was changed.
mozilla::Atomic<bool> mWindowSurfaceValid;
#ifdef MOZ_WAYLAND
RefPtr<nsWindow> mWidget;
// WindowSurfaceProvider is owned by GtkCompositorWidget so we don't need
// to reference it.
GtkCompositorWidget* mCompositorWidget = nullptr;
#endif
#ifdef MOZ_X11
bool mIsShaped;
int mXDepth;
Window mXWindow;
Visual* mXVisual;
#endif
};
} // namespace widget
} // namespace mozilla
#endif // _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H
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