1/*
2 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above
9 *    copyright notice, this list of conditions and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above
12 *    copyright notice, this list of conditions and the following
13 *    disclaimer in the documentation and/or other materials
14 *    provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
23 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
25 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
26 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef ShapeValue_h
31#define ShapeValue_h
32
33#include "BasicShapes.h"
34#include "CSSValueKeywords.h"
35#include "StyleImage.h"
36#include <wtf/PassRefPtr.h>
37
38namespace WebCore {
39
40class ShapeValue : public RefCounted<ShapeValue> {
41public:
42    enum class Type {
43        // The None value is defined by a null ShapeValue*
44        Shape,
45        Box,
46        Image
47    };
48
49    static PassRefPtr<ShapeValue> createShapeValue(PassRefPtr<BasicShape> shape, CSSBoxType cssBox)
50    {
51        return adoptRef(new ShapeValue(shape, cssBox));
52    }
53
54    static PassRefPtr<ShapeValue> createBoxShapeValue(CSSBoxType boxShape)
55    {
56        return adoptRef(new ShapeValue(boxShape));
57    }
58
59    static PassRefPtr<ShapeValue> createImageValue(PassRefPtr<StyleImage> image)
60    {
61        return adoptRef(new ShapeValue(image));
62    }
63
64    Type type() const { return m_type; }
65    BasicShape* shape() const { return m_shape.get(); }
66    CSSBoxType cssBox() const { return m_cssBox; }
67
68    StyleImage* image() const { return m_image.get(); }
69
70    bool isImageValid() const;
71
72    void setImage(PassRefPtr<StyleImage> image)
73    {
74        ASSERT(type() == Type::Image);
75        if (m_image != image)
76            m_image = image;
77    }
78
79    bool operator==(const ShapeValue& other) const { return type() == other.type(); }
80
81private:
82    ShapeValue(PassRefPtr<BasicShape> shape, CSSBoxType cssBox)
83        : m_type(Type::Shape)
84        , m_shape(shape)
85        , m_cssBox(cssBox)
86    {
87    }
88    ShapeValue(Type type)
89        : m_type(type)
90        , m_cssBox(BoxMissing)
91    {
92    }
93    ShapeValue(PassRefPtr<StyleImage> image)
94        : m_type(Type::Image)
95        , m_image(image)
96        , m_cssBox(BoxMissing)
97    {
98    }
99
100    ShapeValue(CSSBoxType cssBox)
101        : m_type(Type::Box)
102        , m_cssBox(cssBox)
103    {
104    }
105
106    Type m_type;
107    RefPtr<BasicShape> m_shape;
108    RefPtr<StyleImage> m_image;
109    CSSBoxType m_cssBox;
110};
111
112}
113
114#endif
115