chromium/third_party/blink/renderer/core/loader/resource/image_resource.h

/*
    Copyright (C) 1998 Lars Knoll ([email protected])
    Copyright (C) 2001 Dirk Mueller <[email protected]>
    Copyright (C) 2006 Samuel Weinig ([email protected])
    Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_RESOURCE_IMAGE_RESOURCE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_RESOURCE_IMAGE_RESOURCE_H_

#include "base/containers/span.h"
#include "base/task/single_thread_task_runner.h"
#include "base/time/time.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/loader/resource/image_resource_content.h"
#include "third_party/blink/renderer/core/loader/resource/image_resource_info.h"
#include "third_party/blink/renderer/core/loader/resource/multipart_image_resource_parser.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"
#include "third_party/blink/renderer/platform/timer.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
#include "third_party/blink/renderer/platform/wtf/shared_buffer.h"

namespace blink {

class DOMWrapperWorld;
class FetchParameters;
class ImageResourceContent;
class ResourceClient;
class ResourceFetcher;

// ImageResource implements blink::Resource interface and image-specific logic
// for loading images.
// Image-related things (blink::Image and ImageResourceObserver) are handled by
// ImageResourceContent.
// Most users should use ImageResourceContent instead of ImageResource.
// https://docs.google.com/document/d/1O-fB83mrE0B_V8gzXNqHgmRLCvstTB4MMi3RnVLr8bE/edit?usp=sharing
//
// As for the lifetimes of ImageResourceContent::m_image and m_data, see this
// document:
// https://docs.google.com/document/d/1v0yTAZ6wkqX2U_M6BNIGUJpM1s0TIw1VsqpxoL7aciY/edit?usp=sharing
class CORE_EXPORT ImageResource final
    : public Resource,
      public MultipartImageResourceParser::Client { … };

template <>
struct DowncastTraits<ImageResource> { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_RESOURCE_IMAGE_RESOURCE_H_