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This patch:

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* 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.
This commit is contained in:
Artem Pavlenko 2006-09-15 07:56:35 +00:00
parent 2f360a6549
commit 2d04ce0360
1 changed files with 29 additions and 28 deletions
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57
include/color.hpp
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@ -34,70 +34,71 @@ namespace mapnik {
class MAPNIK_DECL Color
{
private:
unsigned int rgba_;
unsigned int abgr_;
public:
Color()
:rgba_(0xffffffff) {}
:abgr_(0xffffffff) {}
Color(int red,int green,int blue,int alpha=0xff)
: rgba_((alpha&0xff) << 24 | (blue&0xff) << 16 | (green&0xff) << 8 | red&0xff) {}
: abgr_((alpha&0xff) << 24 | (blue&0xff) << 16 | (green&0xff) << 8 | red&0xff) {}
explicit Color(int rgba)
: rgba_(rgba) {}
: abgr_(rgba) {}
Color(const Color& rhs)
: rgba_(rhs.rgba_) {}
: abgr_(rhs.abgr_) {}
Color& operator=(const Color& rhs)
{
if (this==&rhs) return *this;
rgba_=rhs.rgba_;
abgr_=rhs.abgr_;
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;
return abgr_&0xff;
}
inline unsigned int green() const
{
return (abgr_>>8)&0xff;
}
inline unsigned int blue() const
{
return (abgr_>>16)&0xff;
}
inline unsigned int alpha() const
{
return (abgr_>>24)&0xff;
}
inline void set_red(unsigned int r)
{
rgba_ = (rgba_ & 0xffffff00) | (r&0xff);
abgr_ = (abgr_ & 0xffffff00) | (r&0xff);
}
inline void set_green(unsigned int g)
{
rgba_ = (rgba_ & 0xffff00ff) | ((g&0xff) << 8);
abgr_ = (abgr_ & 0xffff00ff) | ((g&0xff) << 8);
}
inline void set_blue(unsigned int b)
{
rgba_ = (rgba_ & 0xff00ffff) | ((b&0xff) << 16);
abgr_ = (abgr_ & 0xff00ffff) | ((b&0xff) << 16);
}
inline void set_alpha(unsigned int a)
{
abgr_ = (abgr_ & 0x00ffffff | (a&0xff) << 24);
}
inline unsigned int alpha() const
{
return (rgba_>>24)&0xff;
}
inline unsigned int rgba() const
{
return rgba_;
return abgr_;
}
inline void set_bgr(unsigned bgr)
{
rgba_ = (rgba_ & 0xff000000) | (bgr & 0xffffff);
abgr_ = (abgr_ & 0xff000000) | (bgr & 0xffffff);
}
inline bool operator==(Color const& other) const
{
return rgba_ == other.rgba_;
return abgr_ == other.abgr_;
}
inline std::string to_string() const