gecko-dev/image/MultipartImage.h
Michael Layzell c73561b313 Bug 1181324 - Eliminate the duplicate mRefCnt member in MultipartImage. r=seth
--HG--
extra : rebase_source : 0edc7d46f8a3a15f2aeea4e51f69301d605320b5
2015-07-07 14:10:00 +02:00

91 lines
3.0 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_image_MultipartImage_h
#define mozilla_image_MultipartImage_h
#include "ImageWrapper.h"
#include "IProgressObserver.h"
#include "ProgressTracker.h"
namespace mozilla {
namespace image {
class NextPartObserver;
/**
* An Image wrapper that implements support for multipart/x-mixed-replace
* images.
*/
class MultipartImage
: public ImageWrapper
, public IProgressObserver
{
public:
MOZ_DECLARE_REFCOUNTED_TYPENAME(MultipartImage)
NS_DECL_ISUPPORTS_INHERITED
void BeginTransitionToPart(Image* aNextPart);
// Overridden ImageWrapper methods:
virtual already_AddRefed<imgIContainer> Unwrap() override;
virtual already_AddRefed<ProgressTracker> GetProgressTracker() override;
virtual void SetProgressTracker(ProgressTracker* aTracker) override;
virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aInStr,
uint64_t aSourceOffset,
uint32_t aCount) override;
virtual nsresult OnImageDataComplete(nsIRequest* aRequest,
nsISupports* aContext,
nsresult aStatus,
bool aLastPart) override;
// We don't support locking or track animation consumers for individual parts,
// so we override these methods to do nothing.
NS_IMETHOD LockImage() override { return NS_OK; }
NS_IMETHOD UnlockImage() override { return NS_OK; }
virtual void IncrementAnimationConsumers() override { }
virtual void DecrementAnimationConsumers() override { }
#ifdef DEBUG
virtual uint32_t GetAnimationConsumers() override { return 1; }
#endif
// Overridden IProgressObserver methods:
virtual void Notify(int32_t aType,
const nsIntRect* aRect = nullptr) override;
virtual void OnLoadComplete(bool aLastPart) override;
virtual void SetHasImage() override;
virtual bool NotificationsDeferred() const override;
virtual void SetNotificationsDeferred(bool aDeferNotifications) override;
// We don't allow multipart images to block onload, so we override these
// methods to do nothing.
virtual void BlockOnload() override { }
virtual void UnblockOnload() override { }
protected:
virtual ~MultipartImage();
private:
friend class ImageFactory;
friend class NextPartObserver;
explicit MultipartImage(Image* aFirstPart);
void Init();
void FinishTransition();
nsRefPtr<ProgressTracker> mTracker;
nsRefPtr<NextPartObserver> mNextPartObserver;
nsRefPtr<Image> mNextPart;
bool mDeferNotifications : 1;
};
} // namespace image
} // namespace mozilla
#endif // mozilla_image_MultipartImage_h