The Tor Browser: image/src/ImageWrapper.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

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

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef MOZILLA_IMAGELIB_IMAGEWRAPPER_H_

     7 #define MOZILLA_IMAGELIB_IMAGEWRAPPER_H_

     9 #include "mozilla/MemoryReporting.h"

    10 #include "Image.h"

    12 namespace mozilla {

    13 namespace image {

    15 /**

    16  * Abstract superclass for Images that wrap other Images.

    17  */

    18 class ImageWrapper : public Image

    19 {

    20 public:

    21   NS_DECL_ISUPPORTS

    22   NS_DECL_IMGICONTAINER

    24   virtual ~ImageWrapper() { }

    26   // Inherited methods from Image.

    27   virtual nsresult Init(const char* aMimeType, uint32_t aFlags) MOZ_OVERRIDE;

    29   virtual already_AddRefed<imgStatusTracker> GetStatusTracker() MOZ_OVERRIDE;

    30   virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE;

    32   virtual uint32_t SizeOfData() MOZ_OVERRIDE;

    33   virtual size_t HeapSizeOfSourceWithComputedFallback(mozilla::MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;

    34   virtual size_t HeapSizeOfDecodedWithComputedFallback(mozilla::MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;

    35   virtual size_t NonHeapSizeOfDecoded() const MOZ_OVERRIDE;

    36   virtual size_t OutOfProcessSizeOfDecoded() const MOZ_OVERRIDE;

    38   virtual void IncrementAnimationConsumers() MOZ_OVERRIDE;

    39   virtual void DecrementAnimationConsumers() MOZ_OVERRIDE;

    40 #ifdef DEBUG

    41   virtual uint32_t GetAnimationConsumers() MOZ_OVERRIDE;

    42 #endif

    44   virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,

    45                                         nsISupports* aContext,

    46                                         nsIInputStream* aInStr,

    47                                         uint64_t aSourceOffset,

    48                                         uint32_t aCount) MOZ_OVERRIDE;

    49   virtual nsresult OnImageDataComplete(nsIRequest* aRequest,

    50                                        nsISupports* aContext,

    51                                        nsresult aStatus,

    52                                        bool aLastPart) MOZ_OVERRIDE;

    53   virtual nsresult OnNewSourceData() MOZ_OVERRIDE;

    55   virtual void SetInnerWindowID(uint64_t aInnerWindowId) MOZ_OVERRIDE;

    56   virtual uint64_t InnerWindowID() const MOZ_OVERRIDE;

    58   virtual bool HasError() MOZ_OVERRIDE;

    59   virtual void SetHasError() MOZ_OVERRIDE;

    61   virtual ImageURL* GetURI() MOZ_OVERRIDE;

    63 protected:

    64   ImageWrapper(Image* aInnerImage)

    65     : mInnerImage(aInnerImage)

    66   {

    67     NS_ABORT_IF_FALSE(aInnerImage, "Cannot wrap a null image");

    68   }

    70   /**

    71    * Returns a weak reference to the inner image wrapped by this ImageWrapper.

    72    */

    73   Image* InnerImage() { return mInnerImage.get(); }

    75 private:

    76   nsRefPtr<Image> mInnerImage;

    77 };

    79 } // namespace image

    80 } // namespace mozilla

    82 #endif // MOZILLA_IMAGELIB_IMAGEWRAPPER_H_

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