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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, 2009 Apple Inc. All rights reserv
ed. | |
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 ShadowData_h | |
26 #define ShadowData_h | |
27 | |
28 #include "platform/geometry/FloatPoint.h" | |
29 #include "platform/geometry/FloatRectOutsets.h" | |
30 #include "platform/graphics/Color.h" | |
31 | |
32 namespace blink { | |
33 | |
34 enum ShadowStyle { Normal, Inset }; | |
35 | |
36 // This class holds information about shadows for the text-shadow and box-shadow
properties. | |
37 class ShadowData { | |
38 WTF_MAKE_FAST_ALLOCATED(ShadowData); | |
39 public: | |
40 ShadowData(const FloatPoint& location, float blur, float spread, ShadowStyle
style, const Color& color) | |
41 : m_location(location) | |
42 , m_blur(blur) | |
43 , m_spread(spread) | |
44 , m_color(color) | |
45 , m_style(style) | |
46 { | |
47 } | |
48 | |
49 bool operator==(const ShadowData&) const; | |
50 bool operator!=(const ShadowData& o) const { return !(*this == o); } | |
51 | |
52 ShadowData blend(const ShadowData& from, double progress) const; | |
53 | |
54 float x() const { return m_location.x(); } | |
55 float y() const { return m_location.y(); } | |
56 FloatPoint location() const { return m_location; } | |
57 float blur() const { return m_blur; } | |
58 float spread() const { return m_spread; } | |
59 ShadowStyle style() const { return m_style; } | |
60 const Color& color() const { return m_color; } | |
61 | |
62 // Outsets needed to adjust a source rectangle to the one cast by this | |
63 // shadow. | |
64 FloatRectOutsets rectOutsets() const | |
65 { | |
66 float blurAndSpread = blur() + spread(); | |
67 return FloatRectOutsets( | |
68 blurAndSpread - y() /* top */, | |
69 blurAndSpread + x() /* right */, | |
70 blurAndSpread + y() /* bottom */, | |
71 blurAndSpread - x() /* left */); | |
72 } | |
73 | |
74 private: | |
75 FloatPoint m_location; | |
76 float m_blur; | |
77 float m_spread; | |
78 // FIXME: We should use StyleColor here to allow currentColor to work correc
tly with visited links | |
79 Color m_color; | |
80 ShadowStyle m_style; | |
81 }; | |
82 | |
83 } // namespace blink | |
84 | |
85 #endif // ShadowData_h | |
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