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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 OffscreenCanvasShutdownObserver;
class WeakWorkerRef;
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);
void OnShutdown() override;
NS_IMETHOD InitializeWithDrawTarget(
nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override;
private:
void AddShutdownObserver() override;
void RemoveShutdownObserver() override;
bool AlreadyShutDown() const override {
return !mOffscreenShutdownObserver &&
CanvasRenderingContext2D::AlreadyShutDown();
}
void AddZoneWaitingForGC() override;
void AddAssociatedMemory() override;
void RemoveAssociatedMemory() override;
~OffscreenCanvasRenderingContext2D() override;
RefPtr<OffscreenCanvasShutdownObserver> mOffscreenShutdownObserver;
RefPtr<WeakWorkerRef> mWorkerRef;
};
size_t BindingJSObjectMallocBytes(OffscreenCanvasRenderingContext2D* aContext);
} // namespace mozilla::dom
#endif // MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_
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