gfx/thebes/gfxPlatformWorker.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef GFX_PLATFORM_WORKER_H
   7 #define GFX_PLATFORM_WORKER_H
   8
   9 #include "mozilla/ThreadLocal.h"
  10 #include "mozilla/RefPtr.h"
  11
  12 namespace mozilla {
  13 namespace dom {
  14 class WeakWorkerRef;
  15 }  // namespace dom
  16
  17 namespace gfx {
  18 class DrawTarget;
  19 }  // namespace gfx
  20 }  // namespace mozilla
  21
  22 /**
  23  * Threadlocal instance of gfxPlatform data that may be used/shared on a DOM
  24  * worker thread.
  25  */
  26 class gfxPlatformWorker final {
  27  public:
  28   static gfxPlatformWorker* Get();
  29   static void Shutdown();
  30
  31   RefPtr<mozilla::gfx::DrawTarget> ScreenReferenceDrawTarget();
  32
  33  private:
  34   explicit gfxPlatformWorker(RefPtr<mozilla::dom::WeakWorkerRef>&& aWorkerRef);
  35   ~gfxPlatformWorker();
  36
  37   static MOZ_THREAD_LOCAL(gfxPlatformWorker*) sInstance;
  38
  39   RefPtr<mozilla::dom::WeakWorkerRef> mWorkerRef;
  40
  41   RefPtr<mozilla::gfx::DrawTarget> mScreenReferenceDrawTarget;
  42 };
  43
  44 #endif  // GFX_PLATFORM_WORKER_H