michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 et tw=78: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_ImageData_h
michael@0: #define mozilla_dom_ImageData_h
michael@0: 
michael@0: #include "nsIDOMCanvasRenderingContext2D.h"
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "mozilla/dom/BindingUtils.h"
michael@0: #include "mozilla/dom/TypedArray.h"
michael@0: #include <stdint.h>
michael@0: 
michael@0: #include "nsCycleCollectionParticipant.h"
michael@0: #include "nsISupportsImpl.h"
michael@0: #include "js/GCAPI.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class ImageData MOZ_FINAL : public nsISupports
michael@0: {
michael@0: public:
michael@0:   ImageData(uint32_t aWidth, uint32_t aHeight, JSObject& aData)
michael@0:     : mWidth(aWidth)
michael@0:     , mHeight(aHeight)
michael@0:     , mData(&aData)
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(ImageData);
michael@0:     HoldData();
michael@0:   }
michael@0: 
michael@0:   ~ImageData()
michael@0:   {
michael@0:     MOZ_COUNT_DTOR(ImageData);
michael@0:     DropData();
michael@0:   }
michael@0: 
michael@0:   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ImageData)
michael@0: 
michael@0:   static ImageData* Constructor(const GlobalObject& aGlobal,
michael@0:                                 const uint32_t aWidth,
michael@0:                                 const uint32_t aHeight,
michael@0:                                 ErrorResult& aRv);
michael@0: 
michael@0:   static ImageData* Constructor(const GlobalObject& aGlobal,
michael@0:                                 const Uint8ClampedArray& aData,
michael@0:                                 const uint32_t aWidth,
michael@0:                                 const Optional<uint32_t>& aHeight,
michael@0:                                 ErrorResult& aRv);
michael@0: 
michael@0:   uint32_t Width() const
michael@0:   {
michael@0:     return mWidth;
michael@0:   }
michael@0:   uint32_t Height() const
michael@0:   {
michael@0:     return mHeight;
michael@0:   }
michael@0:   void GetData(JSContext* cx, JS::MutableHandle<JSObject*> aData) const
michael@0:   {
michael@0:     aData.set(GetDataObject());
michael@0:   }
michael@0:   JSObject* GetDataObject() const
michael@0:   {
michael@0:     JS::ExposeObjectToActiveJS(mData);
michael@0:     return mData;
michael@0:   }
michael@0: 
michael@0:   JSObject* WrapObject(JSContext* cx);
michael@0: 
michael@0: private:
michael@0:   void HoldData();
michael@0:   void DropData();
michael@0: 
michael@0:   ImageData() MOZ_DELETE;
michael@0: 
michael@0:   uint32_t mWidth, mHeight;
michael@0:   JS::Heap<JSObject*> mData;
michael@0: };
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_dom_ImageData_h