1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) 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 WebCore { 34 35 class HTMLFormElement; 36 class ImageCandidate; 37 38 class HTMLImageElement FINAL : public HTMLElement, public CanvasImageSource { 39 public: 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); 43 44 virtual ~HTMLImageElement(); 45 virtual void trace(Visitor*) OVERRIDE; 46 47 int width(bool ignorePendingStylesheets = false); 48 int height(bool ignorePendingStylesheets = false); 49 50 int naturalWidth() const; 51 int naturalHeight() const; 52 const String& currentSrc() const; 53 54 bool isServerMap() const; 55 56 const AtomicString& altText() const; 57 58 CompositeOperator compositeOperator() const { return m_compositeOperator; } 59 60 ImageResource* cachedImage() const { return imageLoader().image(); } 61 void setImageResource(ImageResource* i) { imageLoader().setImage(i); }; 62 63 void setLoadManually(bool loadManually) { imageLoader().setLoadManually(loadManually); } 64 65 const AtomicString& alt() const; 66 67 void setHeight(int); 68 69 KURL src() const; 70 void setSrc(const String&); 71 72 void setWidth(int); 73 74 int x() const; 75 int y() const; 76 77 bool complete() const; 78 79 bool hasPendingActivity() const { return imageLoader().hasPendingActivity(); } 80 81 virtual bool canContainRangeEndPoint() const OVERRIDE { return false; } 82 83 void addClient(ImageLoaderClient* client) { imageLoader().addClient(client); } 84 void removeClient(ImageLoaderClient* client) { imageLoader().removeClient(client); } 85 86 virtual const AtomicString imageSourceURL() const OVERRIDE; 87 88 virtual HTMLFormElement* formOwner() const OVERRIDE; 89 void formRemovedFromTree(const Node& formRoot); 90 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; 97 98 enum UpdateFromElementBehavior { 99 UpdateNormal, 100 UpdateIgnorePreviousError 101 }; 102 // public so that HTMLPictureElement can call this as well. 103 void selectSourceURL(UpdateFromElementBehavior); 104 protected: 105 explicit HTMLImageElement(Document&, HTMLFormElement* = 0, bool createdByParser = false); 106 107 virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE; 108 109 private: 110 virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; } 111 112 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; 115 116 virtual void attach(const AttachContext& = AttachContext()) OVERRIDE; 117 virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE; 118 119 virtual bool canStartSelection() const OVERRIDE; 120 121 virtual bool isURLAttribute(const Attribute&) const OVERRIDE; 122 virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE; 123 virtual const QualifiedName& subResourceAttributeName() const OVERRIDE; 124 125 virtual bool draggable() const OVERRIDE; 126 127 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; 133 134 void resetFormOwner(); 135 ImageCandidate findBestFitImageFromPictureParent(); 136 void setBestFitURLAndDPRFromImageCandidate(const ImageCandidate&); 137 HTMLImageLoader& imageLoader() const { return *m_imageLoader; } 138 139 OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader; 140 #if ENABLE(OILPAN) 141 Member<HTMLFormElement> m_form; 142 #else 143 WeakPtr<HTMLFormElement> m_form; 144 #endif 145 CompositeOperator m_compositeOperator; 146 AtomicString m_bestFitImageURL; 147 float m_imageDevicePixelRatio; 148 bool m_formWasSetByParser; 149 bool m_elementCreatedByParser; 150 }; 151 152 } //namespace 153 154 #endif 155
