2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2004, 2008, 2010 Apple Inc. All rights reserved.
5 * Copyright (C) 2010 Google Inc. All rights reserved.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
24 #ifndef HTMLImageElement_h
25 #define HTMLImageElement_h
27 #include "core/html/HTMLElement.h"
28 #include "core/html/HTMLImageLoader.h"
29 #include "core/html/canvas/CanvasImageSource.h"
30 #include "platform/graphics/GraphicsTypes.h"
31 #include "wtf/WeakPtr.h"
35 class HTMLFormElement;
38 class HTMLImageElement final : public HTMLElement, public CanvasImageSource {
39 DEFINE_WRAPPERTYPEINFO();
41 class ViewportChangeListener;
43 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&);
44 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&, HTMLFormElement*, bool createdByParser);
45 static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&, int width, int height);
47 virtual ~HTMLImageElement();
48 virtual void trace(Visitor*) override;
50 int width(bool ignorePendingStylesheets = false);
51 int height(bool ignorePendingStylesheets = false);
53 int naturalWidth() const;
54 int naturalHeight() const;
55 const String& currentSrc() const;
57 bool isServerMap() const;
59 const AtomicString& altText() const;
61 ImageResource* cachedImage() const { return imageLoader().image(); }
62 void setImageResource(ImageResource* i) { imageLoader().setImage(i); };
64 void setLoadingImageDocument() { imageLoader().setLoadingImageDocument(); }
69 void setSrc(const String&);
76 bool complete() const;
78 bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); }
80 virtual bool canContainRangeEndPoint() const override { return false; }
82 void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); }
83 void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); }
85 virtual const AtomicString imageSourceURL() const override;
87 virtual HTMLFormElement* formOwner() const override;
88 void formRemovedFromTree(const Node& formRoot);
90 // CanvasImageSourceImplementations
91 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const override;
92 virtual bool wouldTaintOrigin(SecurityOrigin*) const override;
93 virtual FloatSize sourceSize() const override;
94 virtual FloatSize defaultDestinationSize() const override;
95 virtual const KURL& sourceURL() const override;
97 // public so that HTMLPictureElement can call this as well.
98 void selectSourceURL(ImageLoader::UpdateFromElementBehavior);
100 explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);
102 virtual void didMoveToNewDocument(Document& oldDocument) override;
105 virtual bool areAuthorShadowsAllowed() const override { return false; }
107 virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
108 virtual bool isPresentationAttribute(const QualifiedName&) const override;
109 virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
111 virtual void attach(const AttachContext& = AttachContext()) override;
112 virtual RenderObject* createRenderer(RenderStyle*) override;
114 virtual bool canStartSelection() const override;
116 virtual bool isURLAttribute(const Attribute&) const override;
117 virtual bool hasLegalLinkAttribute(const QualifiedName&) const override;
118 virtual const QualifiedName& subResourceAttributeName() const override;
120 virtual bool draggable() const override;
122 virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
123 virtual void removedFrom(ContainerNode*) override;
124 virtual bool shouldRegisterAsNamedItem() const override { return true; }
125 virtual bool shouldRegisterAsExtraNamedItem() const override { return true; }
126 virtual bool isInteractiveContent() const override;
127 virtual Image* imageContents() override;
129 void resetFormOwner();
130 ImageCandidate findBestFitImageFromPictureParent();
131 void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&);
132 HTMLImageLoader& imageLoader() const { return *m_imageLoader; }
133 void notifyViewportChanged();
134 void createMediaQueryListIfDoesNotExist();
136 OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
137 RefPtrWillBeMember<ViewportChangeListener> m_listener;
139 Member<HTMLFormElement> m_form;
141 WeakPtr<HTMLFormElement> m_form;
143 AtomicString m_bestFitImageURL;
144 float m_imageDevicePixelRatio;
145 unsigned m_formWasSetByParser : 1;
146 unsigned m_elementCreatedByParser : 1;
147 // Intrinsic sizing is viewport dependant if the 'w' descriptor was used for the picked resource.
148 unsigned m_intrinsicSizingViewportDependant : 1;
153 #endif // HTMLImageElement_h