image/MultipartImage.h
author Xianzhu Wang <wangxianzhu@chromium.org>
Tue, 05 Mar 2019 12:18:01 +0000
changeset 522193 07c3ea987b01d534e80f9c207be69d2f5c386827
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1529059 [wpt PR 15420] - [BlinkGenPropertyTrees] Initiailize double_sided of synthetic effect, a=testonly Automatic update from web-platform-tests [BlinkGenPropertyTrees] Initiailize double_sided of synthetic effect Previously synthetic effects always had double_sided==false, causing the layer disappear when the backface was facing forward. Bug: 928190 Change-Id: I35534b40346d5c5918bc99c00a4ca6b4e3b68796 Reviewed-on: https://chromium-review.googlesource.com/c/1475815 Reviewed-by: Philip Rogers <pdr@chromium.org> Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org> Cr-Commit-Position: refs/heads/master@{#632764} -- wpt-commits: a89467050deaf1dcbd9140a2f0670b1b85e518ee wpt-pr: 15420

/* -*- 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)
  // We need to always declare refcounting here, because
  // IProgressObserver has pure-virtual refcounting.
  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 MarkPendingNotify() override;
  virtual void ClearPendingNotify() override;

 protected:
  virtual ~MultipartImage();

 private:
  friend class ImageFactory;
  friend class NextPartObserver;

  explicit MultipartImage(Image* aFirstPart);
  void Init();

  void FinishTransition();

  RefPtr<ProgressTracker> mTracker;
  RefPtr<NextPartObserver> mNextPartObserver;
  RefPtr<Image> mNextPart;
  bool mPendingNotify : 1;
};

}  // namespace image
}  // namespace mozilla

#endif  // mozilla_image_MultipartImage_h