Various minor improvements

Touch Bar Simulator.xcodeproj/project.pbxproj

@@ -136,10 +136,10 @@
 			isa = PBXGroup;
 			children = (
 				E3FE2CC21E726CE800C6713A /* main.swift */,
+				AF6C7BC51E7FAF38004A27E0 /* ToolbarSlider.swift */,
 				E3FE2CD21E726EA100C6713A /* Touch Bar Simulator-Bridging-Header.h */,
 				E3FE2CC41E726CE800C6713A /* Assets.xcassets */,
 				E3FE2CC91E726CE800C6713A /* Info.plist */,
-				AF6C7BC51E7FAF38004A27E0 /* ToolbarSlider.swift */,
 			);
 			path = "Touch Bar Simulator";
 			sourceTree = "<group>";

Touch Bar Simulator/ToolbarSlider.swift

@@ -2,56 +2,49 @@
 //  ToolbarSlider.swift
 //  Touch Bar Simulator
 //
-//  Created by Wayne Yeh on 2017/3/20.
-//  Copyright © 2017年 Sindre Sorhus. All rights reserved.
+//  Created by Wayne Yeh on 2017/3/20
+//  MIT License © Sindre Sorhus
 //
 
 import Cocoa
 
-private class ToolbarSliderCell: NSSliderCell {
-	
-	static var knob: NSImage = {
+private final class ToolbarSliderCell: NSSliderCell {
+	private static let knob: NSImage = {
 		let frame = NSRect(x: 0, y: 0, width: 32, height: 32)
-		
+
 		let image = NSImage(size: frame.size)
 		image.lockFocus()
-		
-		// draw a rounded Rectangle
+
+		// Circle
 		let path = NSBezierPath(roundedRect: frame, xRadius: 4, yRadius: 12)
 		NSColor.lightGray.set()
 		path.fill()
-		
-		// draw edge
+
+		// Border
 		NSColor.black.set()
 		path.lineWidth = 2
 		path.stroke()
-		
+
 		image.unlockFocus()
 		return image
 	}()
-	
+
 	override func drawKnob(_ knobRect: NSRect) {
 		ToolbarSliderCell.knob.draw(in: knobRect.insetBy(dx: 0, dy: 6.5))
 	}
-	
 }
 
-class ToolbarSlider: NSSlider {
-	
+final class ToolbarSlider: NSSlider {
 	override init(frame: CGRect) {
 		super.init(frame: frame)
-		addBehavior()
+		cell = ToolbarSliderCell()
 	}
-	
+
 	convenience init() {
 		self.init(frame: CGRect.zero)
 	}
-	
+
 	required init?(coder: NSCoder) {
 		fatalError("init(coder:) has not been implemented")
 	}
-	
-	func addBehavior() {
-		self.cell = ToolbarSliderCell()
-	}
 }

Touch Bar Simulator/main.swift

@@ -10,9 +10,11 @@ import Cocoa
 
 final class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
 	let controller = IDETouchBarSimulatorHostWindowController.simulatorHostWindowController()!
+	var toolbarView: NSView!
 
 	func applicationDidFinishLaunching(_ notification: Notification) {
 		controller.window?.delegate = self
+		toolbarView = controller.window!.standardWindowButton(.closeButton)!.superview!
 		addScreenshotButton()
 		addTransparencySlider()
 	}
@@ -22,7 +24,6 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
 	}
 
 	func addScreenshotButton() {
-		let toolbarView = controller.window!.standardWindowButton(.closeButton)!.superview!
 		let button = NSButton()
 		button.image = #imageLiteral(resourceName: "ScreenshotButton")
 		button.imageScaling = .scaleProportionallyDown
@@ -43,15 +44,14 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
 		keyDown?.post(tap: loc)
 		keyUp?.post(tap: loc)
 	}
-	
+
 	func addTransparencySlider() {
-		let toolbarView = controller.window!.standardWindowButton(.closeButton)!.superview!
 		let slider = ToolbarSlider()
 		slider.frame = CGRect(x: toolbarView.frame.width - 150, y: 4, width: 120, height: 11)
-		slider.action = #selector(settTransparency)
+		slider.action = #selector(setTransparency)
 		toolbarView.addSubview(slider)
-		
-		var transparency = UserDefaults.standard.double(forKey: "TransparencySlider")
+
+		var transparency = UserDefaults.standard.double(forKey: "windowTransparency")
 		if transparency == 0 {
 			transparency = 0.75
 		}
@@ -59,10 +59,10 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSWindowDelegate {
 		slider.doubleValue = transparency
 		controller.window!.alphaValue = CGFloat(slider.doubleValue)
 	}
-	
-	func settTransparency(sender : NSSlider) {
+
+	func setTransparency(sender: NSSlider) {
 		controller.window!.alphaValue = CGFloat(sender.doubleValue)
-		UserDefaults.standard.set(sender.doubleValue, forKey: "TransparencySlider")
+		UserDefaults.standard.set(sender.doubleValue, forKey: "windowTransparency")
 	}
 }
 

readme.md

@@ -2,7 +2,9 @@
 
 > Launch the Touch Bar simulator from anywhere without needing to have Xcode installed
 
-Whereas Apple requires you to launch it from inside Xcode. This app also comes with a handy screenshot button.
+Whereas Apple requires you to launch it from inside Xcode.
+
+This app also comes with a handy transparency slider and screenshot button.
 
 **[Discuss it on Product Hunt](https://www.producthunt.com/posts/touch-bar-simulator)**
 
@@ -33,6 +35,7 @@ You can capture a screenshot of the Touch Bar by either:
 
 - Doesn't require Xcode
 - Signed binary
+- Transparency slider
 - Screenshot button
 - Doesn't steal focus when launched
 - Doesn't take up space in the Dock or app switcher