*Accurately* calculating text height in Cocoa (for Mac, not iOS)

Question

How can I calculate the height of a string within a particular label (NSTextField), for some given fixed width?

I Googled up various methods and tried this method fr

Answer 1

Thanks indeed to iphaaw and Enchilada for this really cool little solution. I found it worked so well at setting row heights etc that I converted iphaaw's Swift into a couple of NSTextField extensions. Enjoy

extension NSTextField {
func bestheight(text: String, width: CGFloat) -> CGFloat {

    self.stringValue = text
    let getnumber = self.cell!.cellSizeForBounds(NSMakeRect(CGFloat(0.0), CGFloat(0.0), width, CGFloat(FLT_MAX))).height

    return getnumber
   }
}

extension NSTextField {
func bestwidth(text: String, height: CGFloat) -> CGFloat {

    self.stringValue = text
    let getnumber = self.cell!.cellSizeForBounds(NSMakeRect(CGFloat(0.0), CGFloat(0.0), CGFloat(FLT_MAX), height)).width

    return getnumber
   }
}

I hope someone finds these helpful. regards KGH