зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.4 KiB
C++
78 строки
2.4 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 et tw=78: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ImageData_h
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#define mozilla_dom_ImageData_h
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/BindingUtils.h"
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#include "mozilla/dom/TypedArray.h"
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#include <stdint.h>
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#include "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h"
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#include "js/RootingAPI.h"
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#include "js/StructuredClone.h"
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class nsIGlobalObject;
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namespace mozilla {
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namespace dom {
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class ImageData final : public nsISupports {
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~ImageData() { DropData(); }
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public:
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ImageData(uint32_t aWidth, uint32_t aHeight, JSObject& aData)
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: mWidth(aWidth), mHeight(aHeight), mData(&aData) {
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HoldData();
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}
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ImageData)
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static already_AddRefed<ImageData> Constructor(const GlobalObject& aGlobal,
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const uint32_t aWidth,
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const uint32_t aHeight,
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ErrorResult& aRv);
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static already_AddRefed<ImageData> Constructor(
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const GlobalObject& aGlobal, const Uint8ClampedArray& aData,
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const uint32_t aWidth, const Optional<uint32_t>& aHeight,
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ErrorResult& aRv);
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uint32_t Width() const { return mWidth; }
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uint32_t Height() const { return mHeight; }
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void GetData(JSContext* cx, JS::MutableHandle<JSObject*> aData) const {
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aData.set(GetDataObject());
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}
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JSObject* GetDataObject() const { return mData; }
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bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto,
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JS::MutableHandle<JSObject*> aReflector);
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//[Serializable] implementation
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static already_AddRefed<ImageData> ReadStructuredClone(
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JSContext* aCx, nsIGlobalObject* aGlobal,
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JSStructuredCloneReader* aReader);
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bool WriteStructuredClone(JSContext* aCx,
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JSStructuredCloneWriter* aWriter) const;
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private:
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void HoldData();
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void DropData();
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ImageData() = delete;
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uint32_t mWidth, mHeight;
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JS::Heap<JSObject*> mData;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_ImageData_h
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