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"
28 #include "SWF.h"
29 
30 namespace gnash {
31 
33 //
37 {
38 public:
39 
41  //
43  rgba()
44  :
45  m_r(255),
46  m_g(255),
47  m_b(255),
48  m_a(255)
49  {}
50 
52  //
57  rgba(boost::uint8_t r, boost::uint8_t g, boost::uint8_t b,
58  boost::uint8_t a)
59  :
60  m_r(r),
61  m_g(g),
62  m_b(b),
63  m_a(a)
64  {
65  }
66 
68  //
74  void parseRGB(boost::uint32_t rgbCol) {
75  m_r = static_cast<boost::uint8_t>(rgbCol >> 16);
76  m_g = static_cast<boost::uint8_t>(rgbCol >> 8);
77  m_b = static_cast<boost::uint8_t>(rgbCol);
78  }
79 
81  //
87  boost::uint32_t toRGB() const {
88  return (m_r << 16) + (m_g << 8) + m_b;
89  }
90 
92  //
97  boost::uint32_t toRGBA() const {
98  return toRGB() + (m_a << 24);
99  }
100 
101  friend std::ostream& operator<<(std::ostream& os, const rgba& r);
102 
103  bool operator==(const rgba& o) const {
104  return m_r == o.m_r &&
105  m_g == o.m_g &&
106  m_b == o.m_b &&
107  m_a == o.m_a;
108  }
109 
110  bool operator!=(const rgba& o) const {
111  return !(*this == o);
112  }
113 
114  boost::uint8_t m_r, m_g, m_b, m_a;
115 
116 };
117 
118 std::ostream& operator<<(std::ostream& os, const rgba& r);
119 
121 //
125 rgba colorFromHexString(const std::string& color);
126 
128 rgba lerp(const rgba& a, const rgba& b, float f);
129 
130 } // namespace gnash
131 
132 #endif
133 
134 
135 // Local Variables:
136 // mode: C++
137 // indent-tabs-mode: t
138 // End: