1/*
2 * Copyright (C) 2006 Rob Buis <buis@kde.org>
3 * Copyright (C) 2008 Apple Inc. All right reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#ifndef CSSCursorImageValue_h
22#define CSSCursorImageValue_h
23
24#include "core/css/CSSImageValue.h"
25#include "platform/geometry/IntPoint.h"
26#include "wtf/HashSet.h"
27
28namespace blink {
29
30class Element;
31class SVGElement;
32
33class CSSCursorImageValue : public CSSValue {
34public:
35    static PassRefPtrWillBeRawPtr<CSSCursorImageValue> create(PassRefPtrWillBeRawPtr<CSSValue> imageValue, bool hasHotSpot, const IntPoint& hotSpot)
36    {
37        return adoptRefWillBeNoop(new CSSCursorImageValue(imageValue, hasHotSpot, hotSpot));
38    }
39
40    ~CSSCursorImageValue();
41
42    bool hasHotSpot() const { return m_hasHotSpot; }
43
44    IntPoint hotSpot() const
45    {
46        if (m_hasHotSpot)
47            return m_hotSpot;
48        return IntPoint(-1, -1);
49    }
50
51    String customCSSText() const;
52
53    bool updateIfSVGCursorIsUsed(Element*);
54    StyleImage* cachedImage(ResourceFetcher*, float deviceScaleFactor);
55    StyleImage* cachedOrPendingImage(float deviceScaleFactor);
56
57#if !ENABLE(OILPAN)
58    void removeReferencedElement(SVGElement*);
59#endif
60
61    bool equals(const CSSCursorImageValue&) const;
62
63    void traceAfterDispatch(Visitor*);
64
65private:
66    CSSCursorImageValue(PassRefPtrWillBeRawPtr<CSSValue> imageValue, bool hasHotSpot, const IntPoint& hotSpot);
67
68    bool isSVGCursor() const;
69    String cachedImageURL();
70    void clearImageResource();
71
72    RefPtrWillBeMember<CSSValue> m_imageValue;
73
74    bool m_hasHotSpot;
75    IntPoint m_hotSpot;
76    RefPtr<StyleImage> m_image;
77    bool m_accessedImage;
78
79#if !ENABLE(OILPAN)
80    HashSet<SVGElement*> m_referencedElements;
81#endif
82};
83
84DEFINE_CSS_VALUE_TYPE_CASTS(CSSCursorImageValue, isCursorImageValue());
85
86} // namespace blink
87
88#endif // CSSCursorImageValue_h
89