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added alpha() method

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This commit is contained in:
Artem Pavlenko 2005-08-31 19:36:08 +00:00
parent 04f86c3dc7
commit eb7890cfe8
1 changed files with 9 additions and 3 deletions
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12
include/color.hpp
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@ -31,9 +31,9 @@ namespace mapnik {
Color()
:rgba_(0xffffffff) {}
Color(int red,int green,int blue)
: rgba_(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) {}
@ -58,6 +58,12 @@ namespace mapnik {
{
return rgba_&0xff;
}
inline int alpha() const
{
return (rgba_>>24)&0xff;
}
inline int rgba() const
{
return rgba_;