From ba2514398ae5302a98d0beadd00b03ecdcaa5fb5 Mon Sep 17 00:00:00 2001
From: Artem Pavlenko <artem@mapnik.org>
Date: Wed, 24 May 2006 15:13:51 +0000
Subject: [PATCH] implemented to_hex_color() method that returns #RRGGBB color
 representation.

---
 include/color.hpp | 139 ++++++++++++++++++++++++----------------------
 1 file changed, 73 insertions(+), 66 deletions(-)

diff --git a/include/color.hpp b/include/color.hpp
index dd52f048a..1d4578432 100644
--- a/include/color.hpp
+++ b/include/color.hpp
@@ -25,6 +25,7 @@
 #ifndef COLOR_HPP
 #define COLOR_HPP
 
+#include <boost/format.hpp>
 #include "config.hpp"
 #include <sstream>
 
@@ -33,78 +34,84 @@ namespace mapnik {
     class MAPNIK_DECL Color
     {
     private:
-	unsigned int rgba_;
+        unsigned int rgba_;
     public:
-	Color()
-	    :rgba_(0xffffffff) {}
+        Color()
+            :rgba_(0xffffffff) {}
 
-	Color(int red,int green,int blue,int alpha=0xff)
-	    : rgba_((alpha&0xff) << 24 | (blue&0xff) << 16 | (green&0xff) << 8 | red&0xff) {}
+        Color(int red,int green,int blue,int alpha=0xff)
+            : rgba_((alpha&0xff) << 24 | (blue&0xff) << 16 | (green&0xff) << 8 | red&0xff) {}
 	
-	explicit Color(int rgba)
-	    : rgba_(rgba) {}
+        explicit Color(int rgba)
+            : rgba_(rgba) {}
 
-	Color(const Color& rhs)
-	    : rgba_(rhs.rgba_) {}
+        Color(const Color& rhs)
+            : rgba_(rhs.rgba_) {}
 
-	Color& operator=(const Color& rhs)
-	{
-	    if (this==&rhs) return *this;
-	    rgba_=rhs.rgba_;
-	    return *this;
-	}
-	inline unsigned int blue() const
-	{
-	    return (rgba_>>16)&0xff;
-	}
-	inline unsigned int green() const
-	{
-	    return (rgba_>>8)&0xff;
-	}
-	inline unsigned int red() const
-	{
-	    return rgba_&0xff;
-	}
-	
-	inline void set_red(unsigned int r)
-	{
-	    rgba_ = (rgba_ & 0xffffff00) | (r&0xff);
-	}
-	
-	inline void set_green(unsigned int g)
-	{
-	    rgba_ = (rgba_ & 0xffff00ff) | ((g&0xff) << 8);
-	}
-	
-	inline void set_blue(unsigned int b)
-	{
-	    rgba_ = (rgba_ & 0xff00ffff) | ((b&0xff) << 16);
-	}
-
-	inline unsigned int alpha() const
-	{
-	    return (rgba_>>24)&0xff;
-	}
-	
-	inline unsigned int rgba() const
-	{
-	    return rgba_;
-	}
-	inline void set_bgr(unsigned bgr)
-	{
-	    rgba_ = (rgba_ & 0xff000000) | (bgr & 0xffffff);
-	}
-	inline bool operator==(Color const& other) const
-	{
-	    return rgba_ == other.rgba_;
-	}
-
-	inline std::string to_string() const
+        Color& operator=(const Color& rhs)
         {
-	    std::stringstream ss;
-	    ss << "rgb (" << red() << ","  << green() << ","  << blue() <<")";
-	    return ss.str();
-        } 
+            if (this==&rhs) return *this;
+            rgba_=rhs.rgba_;
+            return *this;
+        }
+        inline unsigned int blue() const
+        {
+            return (rgba_>>16)&0xff;
+        }
+        inline unsigned int green() const
+        {
+            return (rgba_>>8)&0xff;
+        }
+        inline unsigned int red() const
+        {
+            return rgba_&0xff;
+        }
+	
+        inline void set_red(unsigned int r)
+        {
+            rgba_ = (rgba_ & 0xffffff00) | (r&0xff);
+        }
+	
+        inline void set_green(unsigned int g)
+        {
+            rgba_ = (rgba_ & 0xffff00ff) | ((g&0xff) << 8);
+        }
+	
+        inline void set_blue(unsigned int b)
+        {
+            rgba_ = (rgba_ & 0xff00ffff) | ((b&0xff) << 16);
+        }
+
+        inline unsigned int alpha() const
+        {
+            return (rgba_>>24)&0xff;
+        }
+	
+        inline unsigned int rgba() const
+        {
+            return rgba_;
+        }
+        inline void set_bgr(unsigned bgr)
+        {
+            rgba_ = (rgba_ & 0xff000000) | (bgr & 0xffffff);
+        }
+        inline bool operator==(Color const& other) const
+        {
+            return rgba_ == other.rgba_;
+        }
+
+        inline std::string to_string() const
+        {
+            std::stringstream ss;
+            ss << "rgb (" << red() << ","  << green() << ","  << blue() <<")";
+            return ss.str();
+        }
+        inline std::string to_hex_string() const
+        {
+            std::stringstream ss;
+            ss << boost::format("#%1$02x%2$02x%3$02x") % red() % green() % blue();
+            return ss.str();
+        }
     };    
 }