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 {
40 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&);
41 static PassRefPtrWillBeRawPtr<HTMLImageElement> create(Document&, HTMLFormElement*, bool createdByParser);
42 static PassRefPtrWillBeRawPtr<HTMLImageElement> createForJSConstructor(Document&, int width, int height);
44 virtual ~HTMLImageElement();
45 virtual void trace(Visitor*) OVERRIDE;
47 int width(bool ignorePendingStylesheets = false);
48 int height(bool ignorePendingStylesheets = false);
50 int naturalWidth() const;
51 int naturalHeight() const;
52 const String& currentSrc() const;
54 bool isServerMap() const;
56 const AtomicString& altText() const;
58 CompositeOperator compositeOperator() const { return m_compositeOperator; }
60 ImageResource* cachedImage() const { return imageLoader().image(); }
61 void setImageResource(ImageResource* i) { imageLoader().setImage(i); };
63 void setLoadManually(bool loadManually) { imageLoader().setLoadManually(loadManually); }
65 const AtomicString& alt() const;
70 void setSrc(const String&);
77 bool complete() const;
79 bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); }
81 virtual bool canContainRangeEndPoint() const OVERRIDE { return false; }
83 void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); }
84 void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); }
86 virtual const AtomicString imageSourceURL() const OVERRIDE;
88 virtual HTMLFormElement* formOwner() const OVERRIDE;
89 void formRemovedFromTree(const Node& formRoot);
91 // CanvasImageSourceImplementations
92 virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const;
93 virtual bool wouldTaintOrigin(SecurityOrigin*) const OVERRIDE;
94 virtual FloatSize sourceSize() const OVERRIDE;
95 virtual FloatSize defaultDestinationSize() const OVERRIDE;
96 virtual const KURL& sourceURL() const OVERRIDE;
98 enum UpdateFromElementBehavior {
100 UpdateIgnorePreviousError
102 // public so that HTMLPictureElement can call this as well.
103 void selectSourceURL(UpdateFromElementBehavior);
105 explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false);
107 virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
110 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
112 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
113 virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
114 virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
116 virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
117 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
119 virtual bool canStartSelection() const OVERRIDE;
121 virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
122 virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE;
123 virtual const QualifiedName& subResourceAttributeName() const OVERRIDE;
125 virtual bool draggable() const OVERRIDE;
127 virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
128 virtual void removedFrom(ContainerNode*) OVERRIDE;
129 virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; }
130 virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; }
131 virtual bool isInteractiveContent() const OVERRIDE;
132 virtual Image* imageContents() OVERRIDE;
134 void resetFormOwner();
135 ImageCandidate findBestFitImageFromPictureParent();
136 void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&);
137 HTMLImageLoader& imageLoader() const { return *m_imageLoader; }
139 OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
141 Member<HTMLFormElement> m_form;
143 WeakPtr<HTMLFormElement> m_form;
145 CompositeOperator m_compositeOperator;
146 AtomicString m_bestFitImageURL;
147 float m_imageDevicePixelRatio;
148 bool m_formWasSetByParser;
149 bool m_elementCreatedByParser;