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* Copyright (C) 1999 Lars Knoll (
* (C) 1999 Antti Koivisto (
* Copyright (C) 2004, 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2010 Google 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
* 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 HTMLImageElement_h
#define HTMLImageElement_h
#include "core/CoreExport.h"
#include "core/fetch/FetchRequest.h"
#include "core/html/HTMLElement.h"
#include "core/html/HTMLImageLoader.h"
#include "core/html/canvas/CanvasImageSource.h"
#include "platform/graphics/GraphicsTypes.h"
#include "platform/network/ResourceResponse.h"
#include "wtf/WeakPtr.h"
namespace blink {
class HTMLFormElement;
class ImageCandidate;
class ShadowRoot;
class CORE_EXPORT HTMLImageElement final : public HTMLElement, public CanvasImageSource {
class ViewportChangeListener;
static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&);
static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&, HTMLFormElement*, bool createdByParser);
static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&);
static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&, int width);
static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&, int width, int height);
~HTMLImageElement() override;
int width();
int height();
int naturalWidth() const;
int naturalHeight() const;
const String& currentSrc() const;
bool isServerMap() const;
String altText() const final;
ImageResource* cachedImage() const { return imageLoader().image(); }
void setImageResource(ImageResource* i) { imageLoader().setImage(i); }
void setLoadingImageDocument() { imageLoader().setLoadingImageDocument(); }
void setHeight(int);
KURL src() const;
void setSrc(const String&);
void setWidth(int);
int x() const;
int y() const;
bool complete() const;
bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); }
bool canContainRangeEndPoint() const override { return false; }
void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); }
void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); }
const AtomicString imageSourceURL() const override;
HTMLFormElement* formOwner() const override;
void formRemovedFromTree(const Node& formRoot);
virtual void ensureFallbackContent();
virtual void ensureFallbackForGeneratedContent();
virtual void ensurePrimaryContent();
// CanvasImageSource implementation
PassRefPtr<Image> getSourceImageForCanvas(SourceImageStatus*) const override;
bool wouldTaintOrigin(SecurityOrigin*) const override;
FloatSize elementSize() const override;
FloatSize defaultDestinationSize() const override;
const KURL& sourceURL() const override;
bool isOpaque() const override;
// public so that HTMLPictureElement can call this as well.
void selectSourceURL(ImageLoader::UpdateFromElementBehavior);
void reattachFallbackContent();
void setUseFallbackContent();
void setIsFallbackImage() { m_isFallbackImage = true; }
FetchRequest::ResourceWidth resourceWidth();
float sourceSize(Element&);
void forceReload() const;
explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);
void didMoveToNewDocument(Document& oldDocument) override;
virtual bool useFallbackContent() const { return m_useFallbackContent; }
void didAddUserAgentShadowRoot(ShadowRoot&) override;
PassRefPtr<ComputedStyle> customStyleForLayoutObject() override;
bool areAuthorShadowsAllowed() const override { return false; }
void parseAttribute(const QualifiedName&, const AtomicString&) override;
bool isPresentationAttribute(const QualifiedName&) const override;
void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
void attach(const AttachContext& = AttachContext()) override;
LayoutObject* createLayoutObject(const ComputedStyle&) override;
bool canStartSelection() const override { return false; }
bool isURLAttribute(const Attribute&) const override;
bool hasLegalLinkAttribute(const QualifiedName&) const override;
const QualifiedName& subResourceAttributeName() const override;
bool draggable() const override;
InsertionNotificationRequest insertedInto(ContainerNode*) override;
void removedFrom(ContainerNode*) override;
bool shouldRegisterAsNamedItem() const override { return true; }
bool shouldRegisterAsExtraNamedItem() const override { return true; }
bool isInteractiveContent() const override;
Image* imageContents() override;
void resetFormOwner();
ImageCandidate findBestFitImageFromPictureParent();
void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&);
HTMLImageLoader& imageLoader() const { return *m_imageLoader; }
void notifyViewportChanged();
void createMediaQueryListIfDoesNotExist();
OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
RefPtrWillBeMember<ViewportChangeListener> m_listener;
WeakPtrWillBeMember<HTMLFormElement> m_form;
AtomicString m_bestFitImageURL;
float m_imageDevicePixelRatio;
unsigned m_formWasSetByParser : 1;
unsigned m_elementCreatedByParser : 1;
// Intrinsic sizing is viewport dependant if the 'w' descriptor was used for the picked resource.
unsigned m_intrinsicSizingViewportDependant : 1;
unsigned m_useFallbackContent : 1;
unsigned m_isFallbackImage : 1;
ReferrerPolicy m_referrerPolicy;
} // namespace blink
#endif // HTMLImageElement_h