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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  *
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #ifndef _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H
       8             : #define _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H
       9             : 
      10             : #include "mozilla/widget/WindowSurface.h"
      11             : #include "mozilla/gfx/Types.h"
      12             : #include "mozilla/gfx/2D.h"
      13             : #include "Units.h"
      14             : 
      15             : #include <X11/Xlib.h> // for Window, Display, Visual, etc.
      16             : 
      17             : namespace mozilla {
      18             : namespace widget {
      19             : 
      20             : /*
      21             :  * Holds the logic for creating WindowSurface's for a GTK nsWindow.
      22             :  * The main purpose of this class is to allow sharing of logic between
      23             :  * nsWindow and X11CompositorWidget, for when OMTC is enabled or disabled.
      24             :  */
      25           0 : class WindowSurfaceProvider final
      26             : {
      27             : public:
      28             :   WindowSurfaceProvider();
      29             : 
      30             :   /**
      31             :    * Initializes the WindowSurfaceProvider by giving it the window
      32             :    * handle and display to attach to. WindowSurfaceProvider doesn't
      33             :    * own the Display, Window, etc, and they must continue to exist
      34             :    * while WindowSurfaceProvider is used.
      35             :    */
      36             :   void Initialize(
      37             :       Display* aDisplay,
      38             :       Window aWindow,
      39             :       Visual* aVisual,
      40             :       int aDepth);
      41             : 
      42             :   /**
      43             :    * Releases any surfaces created by this provider.
      44             :    * This is used by X11CompositorWidget to get rid
      45             :    * of resources before we close the display connection.
      46             :    */
      47             :   void CleanupResources();
      48             : 
      49             :   already_AddRefed<gfx::DrawTarget>
      50             :   StartRemoteDrawingInRegion(LayoutDeviceIntRegion& aInvalidRegion,
      51             :                              layers::BufferMode* aBufferMode);
      52             :   void EndRemoteDrawingInRegion(gfx::DrawTarget* aDrawTarget,
      53             :                                 LayoutDeviceIntRegion& aInvalidRegion);
      54             : 
      55             : private:
      56             :   UniquePtr<WindowSurface> CreateWindowSurface();
      57             : 
      58             :   Display*  mXDisplay;
      59             :   Window    mXWindow;
      60             :   Visual*   mXVisual;
      61             :   int       mXDepth;
      62             : 
      63             :   UniquePtr<WindowSurface> mWindowSurface;
      64             : };
      65             : 
      66             : }  // namespace widget
      67             : }  // namespace mozilla
      68             : 
      69             : #endif // _MOZILLA_WIDGET_GTK_WINDOW_SURFACE_PROVIDER_H