widget/windows/WinCompositorWindowThread.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 widget_windows_WinCompositorWindowThread_h
   8 #define widget_windows_WinCompositorWindowThread_h
   9
  10 #include "base/thread.h"
  11 #include "base/message_loop.h"
  12
  13 namespace mozilla {
  14
  15 namespace layers {
  16 class SynchronousTask;
  17 }
  18
  19 namespace widget {
  20
  21 struct WinCompositorWnds {
  22   HWND mCompositorWnd;
  23   HWND mInitialParentWnd;
  24   WinCompositorWnds(HWND aCompositorWnd, HWND aInitialParentWnd)
  25       : mCompositorWnd(aCompositorWnd), mInitialParentWnd(aInitialParentWnd) {}
  26 };
  27
  28 class WinCompositorWindowThread final {
  29   NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_DELETE_ON_MAIN_THREAD(
  30       WinCompositorWindowThread)
  31
  32  public:
  33   /// Can be called from any thread.
  34   static WinCompositorWindowThread* Get();
  35
  36   /// Can only be called from the main thread.
  37   static void Start();
  38
  39   /// Can only be called from the main thread.
  40   static void ShutDown();
  41
  42   /// Can be called from any thread.
  43   static MessageLoop* Loop();
  44
  45   /// Can be called from any thread.
  46   static bool IsInCompositorWindowThread();
  47
  48   /// Can be called from any thread.
  49   static WinCompositorWnds CreateCompositorWindow();
  50
  51   /// Can be called from any thread.
  52   static void DestroyCompositorWindow(WinCompositorWnds aWnds);
  53
  54  private:
  55   explicit WinCompositorWindowThread(base::Thread* aThread);
  56   ~WinCompositorWindowThread();
  57
  58   void ShutDownTask(layers::SynchronousTask* aTask);
  59
  60   base::Thread* const mThread;
  61 };
  62
  63 }  // namespace widget
  64 }  // namespace mozilla
  65
  66 #endif  // widget_windows_WinCompositorWindowThread_h