Script in swift to write a view out to a TIFF file

gistfile1.swift

#!/usr/bin/env xcrun swift 

import Cocoa

// library code (one day)

func convertViewToTIFF(view: NSView) -> NSData? {
    let application = NSApplication.sharedApplication()
    application.setActivationPolicy(NSApplicationActivationPolicy.Accessory)
    
    
    let win = NSWindow(contentRect: view.bounds, styleMask: 0, backing: NSBackingStoreType.Nonretained, defer: false)
    if let contentView: NSView = win.contentView as? NSView {
        contentView.addSubview(view)
        
        win.makeKeyAndOrderFront(nil)
        
        view.lockFocus()
        let rep = NSBitmapImageRep(focusedViewRect:view.bounds)
        view.unlockFocus()
        if let saferep = rep {
            return saferep.TIFFRepresentation
        }
    }
    
    return .None
}

// my logic

class MyView: NSView {
    
    var backgroundColor : NSColor = NSColor.redColor();
    
    override func drawRect(dirtyRect: NSRect) {
        self.backgroundColor.set()
        NSBezierPath.fillRect(dirtyRect)
    }
}

// script

func mymain() -> Void {

    let test = MyView()

    test.backgroundColor = NSColor.greenColor()
    test.frame = NSMakeRect(0, 0, 300, 400)

    if let tiffdata = convertViewToTIFF(test) {
        tiffdata.writeToFile("/tmp/test.tiff", atomically: true)
    } else {
        println("Failed to render view")
    }

    test.backgroundColor = NSColor.blueColor()
    test.frame = NSMakeRect(0, 0, 200, 200)

    if let tiffdata = convertViewToTIFF(test) {
        tiffdata.writeToFile("/tmp/test2.tiff", atomically: true)
    } else {
        println("Failed to render view")
    }
}
mymain()

The mymain is a hack, as otherwise any vars in your script are global, and then accessibile from anywhere (which makes me sad)