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1 /*
2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4  * Copyright (C) 2004, 2008, 2009, 2011 Apple Inc. All rights reserved.
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public License
17  * along with this library; see the file COPYING.LIB.  If not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  *
21  */
22 
23 #ifndef HTMLAreaElement_h
24 #define HTMLAreaElement_h
25 
26 #include "core/html/HTMLAnchorElement.h"
27 #include "platform/geometry/LayoutRect.h"
28 
29 namespace WebCore {
30 
31 class HitTestResult;
32 class HTMLImageElement;
33 class Path;
34 
35 class HTMLAreaElement FINAL : public HTMLAnchorElement {
36 public:
37     DECLARE_NODE_FACTORY(HTMLAreaElement);
38 
isDefault()39     bool isDefault() const { return m_shape == Default; }
40 
41     bool mapMouseEvent(LayoutPoint location, const LayoutSize&, HitTestResult&);
42 
43     LayoutRect computeRect(RenderObject*) const;
44     Path computePath(RenderObject*) const;
45 
46     // The parent map's image.
47     HTMLImageElement* imageElement() const;
48 
49 private:
50     explicit HTMLAreaElement(Document&);
51 
52     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
53     virtual bool isKeyboardFocusable() const OVERRIDE;
54     virtual bool isMouseFocusable() const OVERRIDE;
55     virtual bool rendererIsFocusable() const OVERRIDE;
56     virtual void updateFocusAppearance(bool /*restorePreviousSelection*/) OVERRIDE;
57     virtual void setFocus(bool) OVERRIDE;
58 
59     enum Shape { Default, Poly, Rect, Circle, Unknown };
60     Path getRegion(const LayoutSize&) const;
61     void invalidateCachedRegion();
62 
63     OwnPtr<Path> m_region;
64     Vector<Length> m_coords;
65     LayoutSize m_lastSize;
66     Shape m_shape;
67 };
68 
69 } //namespace
70 
71 #endif
72