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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 "core/fetch/ImageResource.h" | |
34 #include "core/layout/style/BasicShapes.h" | |
35 #include "core/layout/style/DataEquivalency.h" | |
36 #include "core/layout/style/ComputedStyleConstants.h" | |
37 #include "core/layout/style/StyleImage.h" | |
38 #include "wtf/PassRefPtr.h" | |
39 | |
40 namespace blink { | |
41 | |
42 class ShapeValue : public RefCounted<ShapeValue> { | |
43 public: | |
44 enum ShapeValueType { | |
45 // The Auto value is defined by a null ShapeValue* | |
46 Shape, | |
47 Box, | |
48 Image | |
49 }; | |
50 | |
51 static PassRefPtr<ShapeValue> createShapeValue(PassRefPtr<BasicShape> shape,
CSSBoxType cssBox) | |
52 { | |
53 return adoptRef(new ShapeValue(shape, cssBox)); | |
54 } | |
55 | |
56 static PassRefPtr<ShapeValue> createBoxShapeValue(CSSBoxType cssBox) | |
57 { | |
58 return adoptRef(new ShapeValue(cssBox)); | |
59 } | |
60 | |
61 static PassRefPtr<ShapeValue> createImageValue(PassRefPtr<StyleImage> image) | |
62 { | |
63 return adoptRef(new ShapeValue(image)); | |
64 } | |
65 | |
66 ShapeValueType type() const { return m_type; } | |
67 BasicShape* shape() const { return m_shape.get(); } | |
68 | |
69 StyleImage* image() const { return m_image.get(); } | |
70 bool isImageValid() const | |
71 { | |
72 if (!image()) | |
73 return false; | |
74 if (image()->isImageResource() || image()->isImageResourceSet()) | |
75 return image()->cachedImage() && image()->cachedImage()->hasImage(); | |
76 return image()->isGeneratedImage(); | |
77 } | |
78 void setImage(PassRefPtr<StyleImage> image) | |
79 { | |
80 ASSERT(type() == Image); | |
81 if (m_image != image) | |
82 m_image = image; | |
83 } | |
84 CSSBoxType cssBox() const { return m_cssBox; } | |
85 | |
86 bool operator==(const ShapeValue& other) const; | |
87 | |
88 private: | |
89 ShapeValue(PassRefPtr<BasicShape> shape, CSSBoxType cssBox) | |
90 : m_type(Shape) | |
91 , m_shape(shape) | |
92 , m_cssBox(cssBox) | |
93 { | |
94 } | |
95 ShapeValue(ShapeValueType type) | |
96 : m_type(type) | |
97 , m_cssBox(BoxMissing) | |
98 { | |
99 } | |
100 ShapeValue(PassRefPtr<StyleImage> image) | |
101 : m_type(Image) | |
102 , m_image(image) | |
103 , m_cssBox(ContentBox) | |
104 { | |
105 } | |
106 ShapeValue(CSSBoxType cssBox) | |
107 : m_type(Box) | |
108 , m_cssBox(cssBox) | |
109 { | |
110 } | |
111 | |
112 | |
113 ShapeValueType m_type; | |
114 RefPtr<BasicShape> m_shape; | |
115 RefPtr<StyleImage> m_image; | |
116 CSSBoxType m_cssBox; | |
117 }; | |
118 | |
119 inline bool ShapeValue::operator==(const ShapeValue& other) const | |
120 { | |
121 if (type() != other.type()) | |
122 return false; | |
123 | |
124 switch (type()) { | |
125 case Shape: | |
126 return dataEquivalent(shape(), other.shape()) && cssBox() == other.cssBo
x(); | |
127 case Box: | |
128 return cssBox() == other.cssBox(); | |
129 case Image: | |
130 return dataEquivalent(image(), other.image()); | |
131 } | |
132 | |
133 ASSERT_NOT_REACHED(); | |
134 return false; | |
135 } | |
136 | |
137 } | |
138 | |
139 #endif | |
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