OffscreenCanvasRenderingContext2D.h

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

/* vim:set ts=2 sw=2 sts=2 et cindent: */

/* 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_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_

#define MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_

#include "mozilla/RefPtr.h"

#include "mozilla/dom/CanvasRenderingContext2D.h"

struct JSContext;

class nsIGlobalObject;

namespace mozilla::dom {

class OffscreenCanvas;

class OffscreenCanvasRenderingContext2D final

    : public CanvasRenderingContext2D {

 public:

  // nsISupports interface + CC

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_INHERITED(

      OffscreenCanvasRenderingContext2D, CanvasRenderingContext2D)

  explicit OffscreenCanvasRenderingContext2D(

      layers::LayersBackend aCompositorBackend);

  nsIGlobalObject* GetParentObject() const;

  JSObject* WrapObject(JSContext* aCx,

                       JS::Handle<JSObject*> aGivenProto) override;

  OffscreenCanvas* Canvas() { return mOffscreenCanvas; }

  const OffscreenCanvas* Canvas() const { return mOffscreenCanvas; }

  void Commit(ErrorResult& aRv);

  NS_IMETHOD InitializeWithDrawTarget(

      nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override;

 private:

  void AddZoneWaitingForGC() override;

  void AddAssociatedMemory() override;

  void RemoveAssociatedMemory() override;

  ~OffscreenCanvasRenderingContext2D() override;

};

size_t BindingJSObjectMallocBytes(OffscreenCanvasRenderingContext2D* aContext);

}  // namespace mozilla::dom

#endif  // MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_