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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* 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
* 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 HTMLImageElement_h
#define HTMLImageElement_h
#include "core/html/HTMLElement.h"
#include "core/html/HTMLImageLoader.h"
#include "core/html/canvas/CanvasImageSource.h"
#include "platform/graphics/GraphicsTypes.h"
#include "wtf/WeakPtr.h"
namespace blink {
class HTMLFormElement;
class ImageCandidate;
class ShadowRoot;
class HTMLImageElement final : public HTMLElement, public CanvasImageSource {
DEFINE_WRAPPERTYPEINFO();
public:
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);
virtual ~HTMLImageElement();
virtual void trace(Visitor*) override;
int width(bool ignorePendingStylesheets = false);
int height(bool ignorePendingStylesheets = false);
int naturalWidth() const;
int naturalHeight() const;
const String& currentSrc() const;
bool isServerMap() const;
virtual String altText() const override 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(); }
virtual bool canContainRangeEndPoint() const override { return false; }
void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); }
void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); }
virtual const AtomicString imageSourceURL() const override;
virtual HTMLFormElement* formOwner() const override;
void formRemovedFromTree(const Node& formRoot);
virtual void ensureFallbackContent();
virtual void ensurePrimaryContent();
// CanvasImageSourceImplementations
virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const override;
virtual bool wouldTaintOrigin(SecurityOrigin*) const override;
virtual FloatSize sourceSize() const override;
virtual FloatSize defaultDestinationSize() const override;
virtual const KURL& sourceURL() const override;
// public so that HTMLPictureElement can call this as well.
void selectSourceURL(ImageLoader::UpdateFromElementBehavior);
void reattachFallbackContent();
void setUseFallbackContent();
void setIsFallbackImage() { m_isFallbackImage = true; }
protected:
explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);
virtual void didMoveToNewDocument(Document& oldDocument) override;
virtual bool useFallbackContent() const { return m_useFallbackContent; }
virtual void didAddUserAgentShadowRoot(ShadowRoot&) override;
virtual PassRefPtr<RenderStyle> customStyleForRenderer() override;
private:
virtual bool areAuthorShadowsAllowed() const override { return false; }
virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
virtual bool isPresentationAttribute(const QualifiedName&) const override;
virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
virtual void attach(const AttachContext& = AttachContext()) override;
virtual RenderObject* createRenderer(RenderStyle*) override;
virtual bool canStartSelection() const override;
virtual bool isURLAttribute(const Attribute&) const override;
virtual bool hasLegalLinkAttribute(const QualifiedName&) const override;
virtual const QualifiedName& subResourceAttributeName() const override;
virtual bool draggable() const override;
virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
virtual void removedFrom(ContainerNode*) override;
virtual bool shouldRegisterAsNamedItem() const override { return true; }
virtual bool shouldRegisterAsExtraNamedItem() const override { return true; }
virtual bool isInteractiveContent() const override;
virtual 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;
#if ENABLE(OILPAN)
Member<HTMLFormElement> m_form;
#else
WeakPtr<HTMLFormElement> m_form;
#endif
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;
};
} // namespace blink
#endif // HTMLImageElement_h
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