2d04ce0360
* Adds set_alpha() * Reorders the get/set color functions to be red() green() blue() alpha() (code tidyness) * Changes the internal color variable to be named abgr_ instead of rgba_ since that is the order the colors are stored in it. Thanks to Dave Leaver.
119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2006 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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//$Id: color.hpp 39 2005-04-10 20:39:53Z pavlenko $
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#ifndef COLOR_HPP
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#define COLOR_HPP
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#include <boost/format.hpp>
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#include "config.hpp"
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#include <sstream>
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namespace mapnik {
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class MAPNIK_DECL Color
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{
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private:
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unsigned int abgr_;
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public:
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Color()
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:abgr_(0xffffffff) {}
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Color(int red,int green,int blue,int alpha=0xff)
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: abgr_((alpha&0xff) << 24 | (blue&0xff) << 16 | (green&0xff) << 8 | red&0xff) {}
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explicit Color(int rgba)
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: abgr_(rgba) {}
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Color(const Color& rhs)
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: abgr_(rhs.abgr_) {}
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Color& operator=(const Color& rhs)
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{
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if (this==&rhs) return *this;
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abgr_=rhs.abgr_;
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return *this;
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}
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inline unsigned int red() const
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{
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return abgr_&0xff;
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}
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inline unsigned int green() const
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{
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return (abgr_>>8)&0xff;
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}
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inline unsigned int blue() const
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{
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return (abgr_>>16)&0xff;
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}
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inline unsigned int alpha() const
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{
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return (abgr_>>24)&0xff;
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}
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inline void set_red(unsigned int r)
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{
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abgr_ = (abgr_ & 0xffffff00) | (r&0xff);
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}
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inline void set_green(unsigned int g)
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{
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abgr_ = (abgr_ & 0xffff00ff) | ((g&0xff) << 8);
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}
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inline void set_blue(unsigned int b)
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{
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abgr_ = (abgr_ & 0xff00ffff) | ((b&0xff) << 16);
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}
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inline void set_alpha(unsigned int a)
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{
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abgr_ = (abgr_ & 0x00ffffff | (a&0xff) << 24);
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}
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inline unsigned int rgba() const
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{
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return abgr_;
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}
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inline void set_bgr(unsigned bgr)
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{
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abgr_ = (abgr_ & 0xff000000) | (bgr & 0xffffff);
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}
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inline bool operator==(Color const& other) const
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{
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return abgr_ == other.abgr_;
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}
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inline std::string to_string() const
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{
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std::stringstream ss;
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ss << "rgb (" << red() << "," << green() << "," << blue() <<")";
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return ss.str();
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}
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inline std::string to_hex_string() const
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{
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std::stringstream ss;
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ss << boost::format("#%1$02x%2$02x%3$02x") % red() % green() % blue();
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return ss.str();
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}
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};
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}
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#endif //COLOR_HPP
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