Append Blur to a NSView, NSButton, NSTextField

appendBlur.swift

//
//  appendBlur.swift
//
//  Created by Wesley de Groot on 09-07-16.
//  Copyright © 2016 Wesley de Groot. All rights reserved.
//

import Foundation
enum blur: String {
    case light  = "light"
    case dark   = "dark"
    case xlight = "xlight"
}

#if os(OSX)
    import Cocoa
    
    /**
     Append Blur to a window
     
     - Parameter view: The NSButton, NSView, NSTextField, ...
     - Parameter color: The Color (light/dark)
     - Parameter alwaysBlur: true (default), false=not when in background
     - Parameter hideTitle: false (default), true=hide title
     */
    func appendBlur(view: AnyObject, _ color: blur? = blur.xlight, _ alwaysBlur: Bool? = true, _ hideTitle: Bool? = false) -> Void {
        
        if (view is NSButton ||
            view is NSTextField ||
            view is NSView) {
            
            var Mcolor = ""
            
            if (NSUserDefaults.standardUserDefaults().objectForKey("blur") as! String == "(null)") {
                if (color == blur.xlight) {
                    Mcolor = "light"
                }
            } else {
                if (color == blur.xlight) {
                    Mcolor = NSUserDefaults.standardUserDefaults().objectForKey("blur") as! String
                    
                    if (Mcolor == "light") {
                        Mcolor = "dark"
                    } else {
                        Mcolor = "light"
                    }
                }
            }
            
            if (color == blur.light) {
                Mcolor = "light"
            }
            
            if (color == blur.dark) {
                Mcolor = "dark"
            }
            
            NSUserDefaults.standardUserDefaults().setObject(Mcolor, forKey: "blur")
            NSUserDefaults.standardUserDefaults().synchronize()
            
            if view is NSTextField || view is NSButton {
                if (Mcolor == "dark") {
                    Mcolor = "light"
                } else {
                    Mcolor = "dark"
                }
            }
            
            let blurryView = NSVisualEffectView(frame: NSRect(x: 0,
                y: 0,
                width: view.frame.size.width,
                height: view.frame.size.height))
            
            // this is default value but is here for clarity
            blurryView.blendingMode = NSVisualEffectBlendingMode.BehindWindow
            
            if (Mcolor == "light") {
                blurryView.material = NSVisualEffectMaterial.Light
            } else {
                blurryView.material = NSVisualEffectMaterial.Dark
            }
            
            if ((alwaysBlur) != nil) {
                blurryView.state = NSVisualEffectState.Active
            } else {
                blurryView.state = NSVisualEffectState.FollowsWindowActiveState
            }
            
            if view is NSView {
                view.addSubview(blurryView, positioned: NSWindowOrderingMode.Below, relativeTo: (view as! NSView))
            }
            
            if view is NSTextField {
                view.addSubview(blurryView, positioned: NSWindowOrderingMode.Below, relativeTo: (view as! NSTextField))
            }
            
            if view is NSButton {
                view.addSubview(blurryView, positioned: NSWindowOrderingMode.Below, relativeTo: (view as! NSButton))
            }
        } else {
            print("At this point i only support NSButton, NSTextField, NSView")
            print("Please report a issue on:")
            print("https://gist.github.com/wdg/b5dfcb8b3cac0faa6907719f3992d696")
        }
    }
#else
    /**
     Append Blur to a window (*NOT SUPPORTED ON THIS PLATFORM!*)
     
     - Parameter view: The NS*
     - Parameter color: The Color (light/dark)
     - Parameter alwaysBlur: true (default), false=not when in background
     - Parameter hideTitle: false (default), true=hide title
     */
    func appendBlur(view: AnyObject, _ color: blur? = blur.xlight, _ alwaysBlur: Bool? = true, _ hideTitle: Bool? = false) -> Void {
        
    }
#endif