Get RGBA components of UIColor

It's not so easy to get the separated Red Green Blue Alpha components from an UIColor.
But luckily you can use this helpful function.
You need:
- http://objective-c-functions.blogspot.com/2013/06/helpful-color-struct-rgb-hsv.html


/** Convert from UIColor to RGBA.

 @param col UIColor to convert.
 @return Returns RGBA color.
 @see uicolorFromRgba:

 */
+ (COLOR_RGBA)rgbaFromUIColor:(UIColor *)col {
    const CGFloat *components = CGColorGetComponents([col CGColor]);

    COLOR_RGBA ret;
    ret.r = components[0];
    ret.g = components[1];
    ret.b = components[2];
    ret.a = components[3];

    return ret;
}

Download the ready-for-use source file (.m) of Get RGBA components of UIColor