CanvasManagerChild.h

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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 _include_gfx_ipc_CanvasManagerChild_h__

#define _include_gfx_ipc_CanvasManagerChild_h__

#include "mozilla/Atomics.h"

#include "mozilla/gfx/PCanvasManagerChild.h"

#include "mozilla/gfx/Types.h"

#include "mozilla/ThreadLocal.h"

namespace mozilla {

namespace dom {

class CanvasRenderingContext2D;

class ThreadSafeWorkerRef;

class WorkerPrivate;

}  // namespace dom

namespace layers {

class CanvasChild;

class ActiveResourceTracker;

}  // namespace layers

namespace webgpu {

class WebGPUChild;

}  // namespace webgpu

namespace gfx {

class DataSourceSurface;

class CanvasManagerChild final : public PCanvasManagerChild {

 public:

  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CanvasManagerChild, override);

  explicit CanvasManagerChild(dom::ThreadSafeWorkerRef* aWorkerRef,

                              uint32_t aId);

  uint32_t Id() const { return mId; }

  already_AddRefed<DataSourceSurface> GetSnapshot(

      uint32_t aManagerId, int32_t aProtocolId,

      const Maybe<RemoteTextureOwnerId>& aOwnerId, SurfaceFormat aFormat,

      bool aPremultiply, bool aYFlip);

  void ActorDestroy(ActorDestroyReason aReason) override;

  static CanvasManagerChild* Get();

  static CanvasManagerChild* MaybeGet();

  static void Shutdown();

  static bool CreateParent(

      mozilla::ipc::Endpoint<PCanvasManagerParent>&& aEndpoint);

  bool IsCanvasActive() { return mActive; }

  void EndCanvasTransaction();

  void ClearCachedResources();

  void DeactivateCanvas();

  void BlockCanvas();

  RefPtr<layers::CanvasChild> GetCanvasChild();

  RefPtr<webgpu::WebGPUChild> GetWebGPUChild();

  layers::ActiveResourceTracker* GetActiveResourceTracker();

 private:

  ~CanvasManagerChild();

  void DestroyInternal();

  void Destroy();

  RefPtr<mozilla::dom::ThreadSafeWorkerRef> mWorkerRef;

  RefPtr<layers::CanvasChild> mCanvasChild;

  UniquePtr<layers::ActiveResourceTracker> mActiveResourceTracker;

  const uint32_t mId;

  bool mActive = true;

  bool mBlocked = false;

  static MOZ_THREAD_LOCAL(CanvasManagerChild*) sLocalManager;

  static Atomic<uint32_t> sNextId;

};

}  // namespace gfx

}  // namespace mozilla

#endif  // _include_gfx_ipc_CanvasManagerChild_h__