Mozilla2:GFXColor

Color Class

We should be using RGBA colors all over the tree. It needs to be able to accept packed uint32 colors (nscolor) that we currently use as well as accept strings of hex colors or named colors.

The API

struct RGBA {
    double r, g, b, a;

    RGBA() { }
    RGBA(const RGBA& c) : r(c.r), g(c.g), b(c.b), a(c.a) {}
    RGBA(double _r, double _g, double _b, double _a=1.0) :
        r(_r), g(_g), b(_b), a(_a) {}
    RGBA(unsigned long c) {
        a = (c & 0xff) / 255.0;
        r = ((c >> 8) & 0xff) / 255.0;
        g = ((c >> 16) & 0xff) / 255.0;
        b = ((c >> 24) & 0xff) / 255.0;
    }
    RGBA(const nsAString& str) {
        a = 1.0;
        // if aString[0] is a #, parse it as hex
        // if aString[0] is a letter, parse it as a color name
        // if aString[0] is a number, parse it loosely as hex
    }

    const nsAString& hex() const {
    }
};