Gnash  0.8.11dev
RGBA.h
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1 // RGBA.h: RGBA color handling.
2 //
3 // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
4 // Free Software Foundation, Inc
5 //
6 // This program is free software; you can redistribute it and/or modify
7 // it under the terms of the GNU General Public License as published by
8 // the Free Software Foundation; either version 3 of the License, or
9 // (at your option) any later version.
10 //
11 // This program is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15 //
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 //
20 
21 #ifndef GNASH_RGBA_H
22 #define GNASH_RGBA_H
23 
24 #include <string>
25 #include <boost/cstdint.hpp>
26 
27 #include "dsodefs.h" // for DSOTEXPORT
28 
29 namespace gnash {
30 
32 //
36 {
37 public:
38 
40  //
42  rgba()
43  :
44  m_r(255),
45  m_g(255),
46  m_b(255),
47  m_a(255)
48  {}
49 
51  //
56  rgba(boost::uint8_t r, boost::uint8_t g, boost::uint8_t b,
57  boost::uint8_t a)
58  :
59  m_r(r),
60  m_g(g),
61  m_b(b),
62  m_a(a)
63  {
64  }
65 
67  //
73  void parseRGB(boost::uint32_t rgbCol) {
74  m_r = static_cast<boost::uint8_t>(rgbCol >> 16);
75  m_g = static_cast<boost::uint8_t>(rgbCol >> 8);
76  m_b = static_cast<boost::uint8_t>(rgbCol);
77  }
78 
80  //
86  boost::uint32_t toRGB() const {
87  return (m_r << 16) + (m_g << 8) + m_b;
88  }
89 
91  //
96  boost::uint32_t toRGBA() const {
97  return toRGB() + (m_a << 24);
98  }
99 
100  friend std::ostream& operator<<(std::ostream& os, const rgba& r);
101 
102  bool operator==(const rgba& o) const {
103  return m_r == o.m_r &&
104  m_g == o.m_g &&
105  m_b == o.m_b &&
106  m_a == o.m_a;
107  }
108 
109  bool operator!=(const rgba& o) const {
110  return !(*this == o);
111  }
112 
113  boost::uint8_t m_r, m_g, m_b, m_a;
114 
115 };
116 
117 DSOTEXPORT std::ostream& operator<<(std::ostream& os, const rgba& r);
118 
120 //
124 rgba colorFromHexString(const std::string& color);
125 
127 rgba DSOEXPORT lerp(const rgba& a, const rgba& b, float f);
128 
129 } // namespace gnash
130 
131 #endif
132 
133 
134 // Local Variables:
135 // mode: C++
136 // indent-tabs-mode: t
137 // End: