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 "platform/graphics/GraphicsTypes.h"
30
31namespace WebCore {
32
33class HTMLFormElement;
34
35class HTMLImageElement FINAL : public HTMLElement {
36    friend class HTMLFormElement;
37public:
38    static PassRefPtr<HTMLImageElement> create(Document&);
39    static PassRefPtr<HTMLImageElement> create(Document&, HTMLFormElement*);
40    static PassRefPtr<HTMLImageElement> createForJSConstructor(Document&, int width, int height);
41
42    virtual ~HTMLImageElement();
43
44    int width(bool ignorePendingStylesheets = false);
45    int height(bool ignorePendingStylesheets = false);
46
47    int naturalWidth() const;
48    int naturalHeight() const;
49
50    bool isServerMap() const;
51
52    const AtomicString& altText() const;
53
54    CompositeOperator compositeOperator() const { return m_compositeOperator; }
55
56    ImageResource* cachedImage() const { return m_imageLoader.image(); }
57    void setImageResource(ImageResource* i) { m_imageLoader.setImage(i); };
58
59    void setLoadManually(bool loadManually) { m_imageLoader.setLoadManually(loadManually); }
60
61    const AtomicString& alt() const;
62
63    void setHeight(int);
64
65    KURL src() const;
66    void setSrc(const String&);
67
68    void setWidth(int);
69
70    int x() const;
71    int y() const;
72
73    bool complete() const;
74
75    bool hasPendingActivity() const { return m_imageLoader.hasPendingActivity(); }
76
77    virtual bool canContainRangeEndPoint() const { return false; }
78
79    void addClient(ImageLoaderClient* client) { m_imageLoader.addClient(client); }
80    void removeClient(ImageLoaderClient* client) { m_imageLoader.removeClient(client); }
81
82    virtual const AtomicString imageSourceURL() const OVERRIDE;
83
84    virtual HTMLFormElement* formOwner() const OVERRIDE;
85
86protected:
87    explicit HTMLImageElement(Document&, HTMLFormElement* = 0);
88
89    virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
90
91private:
92    virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
93
94    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
95    virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
96    virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
97
98    virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
99    virtual RenderObject* createRenderer(RenderStyle*);
100
101    virtual bool canStartSelection() const;
102
103    virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
104
105    virtual bool draggable() const;
106
107    virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
108
109    virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
110    virtual void removedFrom(ContainerNode*) OVERRIDE;
111    virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; }
112    virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; }
113    virtual bool isInteractiveContent() const OVERRIDE;
114    virtual Image* imageContents() OVERRIDE;
115
116    HTMLImageLoader m_imageLoader;
117    HTMLFormElement* m_form;
118    CompositeOperator m_compositeOperator;
119    AtomicString m_bestFitImageURL;
120    float m_imageDevicePixelRatio;
121};
122
123DEFINE_NODE_TYPE_CASTS(HTMLImageElement, hasTagName(HTMLNames::imgTag));
124
125} //namespace
126
127#endif
128