1 /* 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. 6 * 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. 11 * 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. 16 * 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. 21 * 22 */ 23 24 #ifndef HTMLImageElement_h 25 #define HTMLImageElement_h 26 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" 32 33 namespace blink { 34 35 class HTMLFormElement; 36 class ImageCandidate; 37 class MediaQueryList; 38 39 class HTMLImageElement FINAL : public HTMLElement, public CanvasImageSource { 40 DEFINE_WRAPPERTYPEINFO(); 41 public: 42 class ViewportChangeListener; 43 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); 47 48 virtual ~HTMLImageElement(); 49 virtual void trace(Visitor*) OVERRIDE; 50 51 int width(bool ignorePendingStylesheets = false); 52 int height(bool ignorePendingStylesheets = false); 53 54 int naturalWidth() const; 55 int naturalHeight() const; 56 const String& currentSrc() const; 57 58 bool isServerMap() const; 59 60 const AtomicString& altText() const; 61 compositeOperator()62 CompositeOperator compositeOperator() const { return m_compositeOperator; } 63 cachedImage()64 ImageResource* cachedImage() const { return imageLoader().image(); } setImageResource(ImageResource * i)65 void setImageResource(ImageResource* i) { imageLoader().setImage(i); }; 66 setLoadingImageDocument()67 void setLoadingImageDocument() { imageLoader().setLoadingImageDocument(); } 68 69 void setHeight(int); 70 71 KURL src() const; 72 void setSrc(const String&); 73 74 void setWidth(int); 75 76 int x() const; 77 int y() const; 78 79 bool complete() const; 80 hasPendingActivity()81 bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); } 82 canContainRangeEndPoint()83 virtual bool canContainRangeEndPoint() const OVERRIDE { return false; } 84 addClient(ImageLoaderClient * client)85 void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); } removeClient(ImageLoaderClient * client)86 void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); } 87 88 virtual const AtomicString imageSourceURL() const OVERRIDE; 89 90 virtual HTMLFormElement* formOwner() const OVERRIDE; 91 void formRemovedFromTree(const Node& formRoot); 92 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; 99 100 // public so that HTMLPictureElement can call this as well. 101 void selectSourceURL(ImageLoader::UpdateFromElementBehavior); 102 protected: 103 explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false); 104 105 virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE; 106 107 private: areAuthorShadowsAllowed()108 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; } 109 110 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; 113 114 virtual void attach(const AttachContext& = AttachContext()) OVERRIDE; 115 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE; 116 117 virtual bool canStartSelection() const OVERRIDE; 118 119 virtual bool isURLAttribute(const Attribute&) const OVERRIDE; 120 virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE; 121 virtual const QualifiedName& subResourceAttributeName() const OVERRIDE; 122 123 virtual bool draggable() const OVERRIDE; 124 125 virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE; 126 virtual void removedFrom(ContainerNode*) OVERRIDE; shouldRegisterAsNamedItem()127 virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; } shouldRegisterAsExtraNamedItem()128 virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; } 129 virtual bool isInteractiveContent() const OVERRIDE; 130 virtual Image* imageContents() OVERRIDE; 131 132 void resetFormOwner(); 133 ImageCandidate findBestFitImageFromPictureParent(); 134 void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&); imageLoader()135 HTMLImageLoader& imageLoader() const { return *m_imageLoader; } 136 void notifyViewportChanged(); 137 void createMediaQueryListIfDoesNotExist(); 138 139 OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader; 140 RefPtrWillBeMember<ViewportChangeListener> m_listener; 141 #if ENABLE(OILPAN) 142 Member<HTMLFormElement> m_form; 143 #else 144 WeakPtr<HTMLFormElement> m_form; 145 #endif 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; 155 }; 156 157 } // namespace blink 158 159 #endif // HTMLImageElement_h 160