swift - How to pass multiple enum values as a function parameter

Question

How would I do the following - passing two NSStringDrawing options as a function parameter in swift:

CGRect boundingRect = [string boundingRectWithSize:CGSizeMake(280.0, NSIntegerMax)
                                                      options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
                                                   attributes:options context:nil];

Answer 1

Edit: In Swift 3.0:

let options: NSStringDrawingOptions = [.usesLineFragmentOrigin, .usesFontLeading]

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Edit: This is how you would use the options enum in Swift 2.0:

let options: NSStringDrawingOptions = [.UsesLineFragmentOrigin, .UsesFontLeading]

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Edit: The issue has been resolved in iOS 8.3 SDK Beta 1 (12F5027d):

Modified NSStringDrawingOptions [struct]

• From: enum NSStringDrawingOptions : Int
• To: struct NSStringDrawingOptions : RawOptionSetType

You can now write:

let options : NSStringDrawingOptions = .UsesLineFragmentOrigin | .UsesFontLeading

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After some research and and @Anton Tcholakov's "comment":

1. If you're targeting OS X 10.10, this is as simple way to do it:

   let size = CGSize(width: 280, height: Int.max)
   let options : NSStringDrawingOptions = .UsesLineFragmentOrigin | .UsesFontLeading
   
   let boundingRect = string.bridgeToObjectiveC().boundingRectWithSize(size, options: options, attributes: attributes, context: nil)
   

2. However, in iOS 8 SDK (in the current seed), there's a bug, where NSStringDrawingOptions is ported to Swift as enum : Int, instead of struct : RawOptionSet. You should send a bug report to Apple describing this serious problem.