forked from mirrors/gecko-dev
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_
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#define MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_
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#include "mozilla/RefPtr.h"
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#include "mozilla/dom/CanvasRenderingContext2D.h"
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struct JSContext;
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class nsIGlobalObject;
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namespace mozilla::dom {
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class OffscreenCanvas;
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class OffscreenCanvasShutdownObserver;
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class WeakWorkerRef;
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class OffscreenCanvasRenderingContext2D final
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: public CanvasRenderingContext2D {
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public:
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// nsISupports interface + CC
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_SKIPPABLE_SCRIPT_HOLDER_CLASS_INHERITED(
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OffscreenCanvasRenderingContext2D, CanvasRenderingContext2D)
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explicit OffscreenCanvasRenderingContext2D(
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layers::LayersBackend aCompositorBackend);
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nsIGlobalObject* GetParentObject() const;
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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OffscreenCanvas* Canvas() { return mOffscreenCanvas; }
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const OffscreenCanvas* Canvas() const { return mOffscreenCanvas; }
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void Commit(ErrorResult& aRv);
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void OnShutdown() override;
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NS_IMETHOD InitializeWithDrawTarget(
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nsIDocShell* aShell, NotNull<gfx::DrawTarget*> aTarget) override;
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private:
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void AddShutdownObserver() override;
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void RemoveShutdownObserver() override;
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bool AlreadyShutDown() const override {
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return !mOffscreenShutdownObserver &&
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CanvasRenderingContext2D::AlreadyShutDown();
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}
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void AddZoneWaitingForGC() override;
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void AddAssociatedMemory() override;
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void RemoveAssociatedMemory() override;
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~OffscreenCanvasRenderingContext2D() override;
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RefPtr<OffscreenCanvasShutdownObserver> mOffscreenShutdownObserver;
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RefPtr<WeakWorkerRef> mWorkerRef;
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};
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size_t BindingJSObjectMallocBytes(OffscreenCanvasRenderingContext2D* aContext);
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} // namespace mozilla::dom
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#endif // MOZILLA_DOM_OFFSCREENCANVASRENDERINGCONTEXT2D_H_
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