osx - Get CGColor from Hex string in swift ( OS X ) -

i implementing first os x app , created cgcolor extension. there way cgcolor hex string ?

thanks !

here extension nscolor hexstring

public extension nscolor {  public convenience init?(hexstring: string) {     self.init(hexstring: hexstring, alpha: 1.0) }  public convenience init?(hexstring: string, alpha: float) {     var hex = hexstring      // check hash , remove hash     if hex.hasprefix("#") {         hex = hex.substringfromindex(hex.startindex.advancedby(1))     }      if (hex.rangeofstring("(^[0-9a-fa-f]{6}$)|(^[0-9a-fa-f]{3}$)", options: .regularexpressionsearch) != nil) {          // deal 3 character hex strings         if hex.characters.count == 3 {             let redhex   = hex.substringtoindex(hex.startindex.advancedby(1))             let greenhex = hex.substringwithrange(range<string.index>(start: hex.startindex.advancedby(1), end: hex.startindex.advancedby(2)))             let bluehex  = hex.substringfromindex(hex.startindex.advancedby(2))              hex = redhex + redhex + greenhex + greenhex + bluehex + bluehex         }          let redhex = hex.substringtoindex(hex.startindex.advancedby(2))         let greenhex = hex.substringwithrange(range<string.index>(start: hex.startindex.advancedby(2), end: hex.startindex.advancedby(4)))         let bluehex = hex.substringwithrange(range<string.index>(start: hex.startindex.advancedby(4), end: hex.startindex.advancedby(6)))          var redint:   cunsignedint = 0         var greenint: cunsignedint = 0         var blueint:  cunsignedint = 0          nsscanner(string: redhex).scanhexint(&redint)         nsscanner(string: greenhex).scanhexint(&greenint)         nsscanner(string: bluehex).scanhexint(&blueint)          self.init(red: cgfloat(redint) / 255.0, green: cgfloat(greenint) / 255.0, blue: cgfloat(blueint) / 255.0, alpha: cgfloat(alpha))     }     else {         // note:         // swift 1.1 compiler unable destroy partially initialized classes in cases,         // disallows formation of situation have to.  consider bug fixed         // in future releases, not feature. -- apple forum         self.init()         return nil     } } 

example:

let color: nscolor = nscolor(hexstring: "#ff8942").cgcolor