1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
5 * (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
6 * Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25 #ifndef RenderImage_h
26 #define RenderImage_h
27
28 #include "RenderImageResource.h"
29 #include "RenderReplaced.h"
30
31 namespace WebCore {
32
33 class HTMLAreaElement;
34 class HTMLMapElement;
35
36 class RenderImage : public RenderReplaced {
37 public:
38 RenderImage(Node*);
39 virtual ~RenderImage();
40
41 void setImageResource(PassOwnPtr<RenderImageResource>);
42
imageResource()43 RenderImageResource* imageResource() { return m_imageResource.get(); }
imageResource()44 const RenderImageResource* imageResource() const { return m_imageResource.get(); }
cachedImage()45 CachedImage* cachedImage() const { return m_imageResource ? m_imageResource->cachedImage() : 0; }
46
47 bool setImageSizeForAltText(CachedImage* newImage = 0);
48
49 void updateAltText();
50
51 HTMLMapElement* imageMap() const;
52 void areaElementFocusChanged(HTMLAreaElement*);
53
54 void highQualityRepaintTimerFired(Timer<RenderImage>*);
55
56 protected:
57 virtual void styleDidChange(StyleDifference, const RenderStyle*);
58
59 virtual void imageChanged(WrappedImagePtr, const IntRect* = 0);
60
61 virtual void paintIntoRect(GraphicsContext*, const IntRect&);
62 virtual void paint(PaintInfo&, int tx, int ty);
63
64 bool isLogicalWidthSpecified() const;
65 bool isLogicalHeightSpecified() const;
66
intrinsicSizeChanged()67 virtual void intrinsicSizeChanged()
68 {
69 if (m_imageResource)
70 imageChanged(m_imageResource->imagePtr());
71 }
72
73 private:
renderName()74 virtual const char* renderName() const { return "RenderImage"; }
75
isImage()76 virtual bool isImage() const { return true; }
isRenderImage()77 virtual bool isRenderImage() const { return true; }
78
79 virtual void paintReplaced(PaintInfo&, int tx, int ty);
80
81 virtual int minimumReplacedHeight() const;
82
83 virtual void notifyFinished(CachedResource*);
84 virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
85
86 virtual int computeReplacedLogicalWidth(bool includeMaxWidth = true) const;
87 virtual int computeReplacedLogicalHeight() const;
88
89 IntSize imageSizeForError(CachedImage*) const;
90 void imageDimensionsChanged(bool imageSizeChanged, const IntRect* = 0);
91
92 int calcAspectRatioLogicalWidth() const;
93 int calcAspectRatioLogicalHeight() const;
94
95 void paintAreaElementFocusRing(PaintInfo&);
96
97 // Text to display as long as the image isn't available.
98 String m_altText;
99 OwnPtr<RenderImageResource> m_imageResource;
100 bool m_needsToSetSizeForAltText;
101
102 friend class RenderImageScaleObserver;
103 };
104
toRenderImage(RenderObject * object)105 inline RenderImage* toRenderImage(RenderObject* object)
106 {
107 ASSERT(!object || object->isRenderImage());
108 return static_cast<RenderImage*>(object);
109 }
110
toRenderImage(const RenderObject * object)111 inline const RenderImage* toRenderImage(const RenderObject* object)
112 {
113 ASSERT(!object || object->isRenderImage());
114 return static_cast<const RenderImage*>(object);
115 }
116
117 // This will catch anyone doing an unnecessary cast.
118 void toRenderImage(const RenderImage*);
119
120 } // namespace WebCore
121
122 #endif // RenderImage_h
123