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;
39 class HTMLImageElement FINAL : public HTMLElement, public CanvasImageSource {
40 DEFINE_WRAPPERTYPEINFO();
42 class ViewportChangeListener;
44 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&);
45 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&, HTMLFormElement*, bool createdByParser);
46 static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&, int width, int height);
48 virtual ~HTMLImageElement();
49 virtual void trace(Visitor*) OVERRIDE;
51 int width(bool ignorePendingStylesheets = false);
52 int height(bool ignorePendingStylesheets = false);
54 int naturalWidth() const;
55 int naturalHeight() const;
56 const String& currentSrc() const;
58 bool isServerMap() const;
60 const AtomicString& altText() const;
62 CompositeOperator compositeOperator() const { return m_compositeOperator; }
64 ImageResource* cachedImage() const { return imageLoader().image(); }
65 void setImageResource(ImageResource* i) { imageLoader().setImage(i); };
67 void setLoadingImageDocument() { imageLoader().setLoadingImageDocument(); }
72 void setSrc(const String&);
79 bool complete() const;
81 bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); }
83 virtual bool canContainRangeEndPoint() const OVERRIDE { return false; }
85 void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); }
86 void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); }
88 virtual const AtomicString imageSourceURL() const OVERRIDE;
90 virtual HTMLFormElement* formOwner() const OVERRIDE;
91 void formRemovedFromTree(const Node& formRoot);
93 // CanvasImageSourceImplementations
94 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const;
95 virtual bool wouldTaintOrigin(SecurityOrigin*) const OVERRIDE;
96 virtual FloatSize sourceSize() const OVERRIDE;
97 virtual FloatSize defaultDestinationSize() const OVERRIDE;
98 virtual const KURL& sourceURL() const OVERRIDE;
100 // public so that HTMLPictureElement can call this as well.
101 void selectSourceURL(ImageLoader::UpdateFromElementBehavior);
103 explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);
105 virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
108 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
110 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
111 virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
112 virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
114 virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
115 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
117 virtual bool canStartSelection() const OVERRIDE;
119 virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
120 virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE;
121 virtual const QualifiedName& subResourceAttributeName() const OVERRIDE;
123 virtual bool draggable() const OVERRIDE;
125 virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
126 virtual void removedFrom(ContainerNode*) OVERRIDE;
127 virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; }
128 virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; }
129 virtual bool isInteractiveContent() const OVERRIDE;
130 virtual Image* imageContents() OVERRIDE;
132 void resetFormOwner();
133 ImageCandidate findBestFitImageFromPictureParent();
134 void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&);
135 HTMLImageLoader& imageLoader() const { return *m_imageLoader; }
136 void notifyViewportChanged();
137 void createMediaQueryListIfDoesNotExist();
139 OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
140 RefPtrWillBeMember<ViewportChangeListener> m_listener;
142 Member<HTMLFormElement> m_form;
144 WeakPtr<HTMLFormElement> m_form;
146 CompositeOperator m_compositeOperator;
147 AtomicString m_bestFitImageURL;
148 float m_imageDevicePixelRatio;
149 unsigned m_formWasSetByParser : 1;
150 unsigned m_elementCreatedByParser : 1;
151 // Intrinsic sizing is viewport dependant if the 'w' descriptor was used for the picked resource.
152 unsigned m_intrinsicSizingViewportDependant : 1;
153 // Effective size is viewport dependant if the sizes attribute's effective size used v* length units.
154 unsigned m_effectiveSizeViewportDependant : 1;
159 #endif // HTMLImageElement_h