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1 /* | |
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) | |
3 * (C) 2000 Antti Koivisto (koivisto@kde.org) | |
4 * (C) 2000 Dirk Mueller (mueller@kde.org) | |
5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved. | |
6 * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com) | |
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 BorderValue_h | |
26 #define BorderValue_h | |
27 | |
28 #include "core/css/StyleColor.h" | |
29 #include "core/layout/style/ComputedStyleConstants.h" | |
30 #include "platform/graphics/Color.h" | |
31 | |
32 namespace blink { | |
33 | |
34 class BorderValue { | |
35 friend class ComputedStyle; | |
36 public: | |
37 BorderValue() | |
38 : m_color(0) | |
39 , m_colorIsCurrentColor(true) | |
40 , m_width(3) | |
41 , m_style(BNONE) | |
42 , m_isAuto(AUTO_OFF) | |
43 { | |
44 } | |
45 | |
46 bool nonZero(bool checkStyle = true) const | |
47 { | |
48 return width() && (!checkStyle || m_style != BNONE); | |
49 } | |
50 | |
51 bool isTransparent() const | |
52 { | |
53 return !m_colorIsCurrentColor && !m_color.alpha(); | |
54 } | |
55 | |
56 bool isVisible(bool checkStyle = true) const | |
57 { | |
58 return nonZero(checkStyle) && !isTransparent() && (!checkStyle || m_styl
e != BHIDDEN); | |
59 } | |
60 | |
61 bool operator==(const BorderValue& o) const | |
62 { | |
63 return m_width == o.m_width && m_style == o.m_style && m_color == o.m_co
lor && m_colorIsCurrentColor == o.m_colorIsCurrentColor; | |
64 } | |
65 | |
66 // The default width is 3px, but if the style is none we compute a value of
0 (in ComputedStyle itself) | |
67 bool visuallyEqual(const BorderValue& o) const | |
68 { | |
69 if (m_style == BNONE && o.m_style == BNONE) | |
70 return true; | |
71 if (m_style == BHIDDEN && o.m_style == BHIDDEN) | |
72 return true; | |
73 return *this == o; | |
74 } | |
75 | |
76 bool operator!=(const BorderValue& o) const | |
77 { | |
78 return !(*this == o); | |
79 } | |
80 | |
81 void setColor(const StyleColor& color) | |
82 { | |
83 m_color = color.resolve(Color()); | |
84 m_colorIsCurrentColor = color.isCurrentColor(); | |
85 } | |
86 | |
87 StyleColor color() const { return m_colorIsCurrentColor ? StyleColor::curren
tColor() : StyleColor(m_color); } | |
88 | |
89 unsigned width() const { return m_width; } | |
90 | |
91 EBorderStyle style() const { return static_cast<EBorderStyle>(m_style); } | |
92 void setStyle(EBorderStyle style) { m_style = style; } | |
93 | |
94 protected: | |
95 Color m_color; | |
96 unsigned m_colorIsCurrentColor : 1; | |
97 | |
98 unsigned m_width : 26; | |
99 unsigned m_style : 4; // EBorderStyle | |
100 | |
101 // This is only used by OutlineValue but moved here to keep the bits packed. | |
102 unsigned m_isAuto : 1; // OutlineIsAuto | |
103 }; | |
104 | |
105 } // namespace blink | |
106 | |
107 #endif // BorderValue_h | |
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