libcore/RGBA.cpp

   1 //
   2 //   Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Free Software
   3 //   Foundation, Inc
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19
  20 #include "RGBA.h"
  21 #include "GnashNumeric.h"
  22 #include "log.h"
  23 #include <sstream>
  24
  25 namespace gnash {
  26
  27 std::string
  28 rgba::toShortString() const
  29 {
  30     std::stringstream ss;
  31     ss << +m_r << "," << +m_g << "," << +m_b << "," << +m_a;
  32     return ss.str();
  33 }
  34
  35 void
  36 rgba::set_lerp(const rgba& a, const rgba& b, float f)
  37 {
  38     m_r = frnd(lerp<float>(a.m_r, b.m_r, f));
  39     m_g = frnd(lerp<float>(a.m_g, b.m_g, f));
  40     m_b = frnd(lerp<float>(a.m_b, b.m_b, f));
  41     m_a = frnd(lerp<float>(a.m_a, b.m_a, f));
  42 }
  43
  44 rgba
  45 colorFromHexString(const std::string& color)
  46 {
  47     std::stringstream ss(color);
  48     boost::uint32_t hexnumber;
  49
  50     if (!(ss >> std::hex >> hexnumber)) {
  51         log_error("Failed to convert string to RGBA value! This is a "
  52                 "Gnash bug");
  53         return rgba();
  54     }
  55
  56     rgba ret;
  57     ret.parseRGB(hexnumber);
  58     return ret;
  59 }
  60
  61 std::ostream&
  62 operator<<(std::ostream& os, const rgba& r)
  63 {
  64     return os << "rgba: " << +r.m_r << "," << +r.m_g << "," << +r.m_b << ","
  65         << +r.m_a;
  66 }
  67
  68 } // namespace gnash
  69
  70
  71 // Local Variables:
  72 // mode: C++
  73 // c-basic-offset: 8
  74 // tab-width: 8
  75 // indent-tabs-mode: t
  76 // End: