├── AKSynthOneKnob.pcvd
├── Knob+Touches.swift
├── KnobStyleKit.swift
├── KnobView.swift
├── README.md
├── SynthUISpike.xcodeproj
    ├── project.pbxproj
    ├── project.xcworkspace
    │   └── contents.xcworkspacedata
    └── xcuserdata
    │   └── wu.xcuserdatad
    │       └── xcschemes
    │           ├── SynthUISpike.xcscheme
    │           └── xcschememanagement.plist
└── SynthUISpike
    ├── AppDelegate.swift
    ├── Assets.xcassets
        └── AppIcon.appiconset
        │   └── Contents.json
    ├── Base.lproj
        ├── LaunchScreen.storyboard
        └── Main.storyboard
    ├── Info.plist
    └── ViewController.swift


/AKSynthOneKnob.pcvd:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/analogcode/SynthKnobExample/c6a0e67e2357ee5d30578d18c5615779d2c845dc/AKSynthOneKnob.pcvd


--------------------------------------------------------------------------------
/Knob+Touches.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  Knob+Touches.swift
 3 | //  Swift Synth
 4 | //
 5 | //  Created by Matthew Fecher on 1/9/16.
 6 | //  Copyright © 2016 AudioKit. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | extension KnobView {
12 | 
13 |     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
14 |         for touch in touches {
15 |             let touchPoint = touch.location(in: self)
16 |             lastX = touchPoint.x
17 |             lastY = touchPoint.y
18 |         }
19 |     }
20 | 
21 |     override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
22 |         for touch in touches {
23 |             let touchPoint = touch.location(in: self)
24 |             setPercentagesWithTouchPoint(touchPoint)
25 |         }
26 |     }
27 | 
28 | }
29 | 


--------------------------------------------------------------------------------
/KnobStyleKit.swift:
--------------------------------------------------------------------------------
  1 | //
  2 | //  KnobStyleKit.swift
  3 | //  UISpike
  4 | //
  5 | //  Created by Matthew Fecher on 7/21/17.
  6 | //  Copyright © 2017 AudioKit. All rights reserved.
  7 | //
  8 | //  Generated by PaintCode
  9 | //  http://www.paintcodeapp.com
 10 | //
 11 | //  This code was generated by Trial version of PaintCode, therefore cannot be used for commercial purposes.
 12 | //
 13 | 
 14 | 
 15 | 
 16 | import UIKit
 17 | 
 18 | public class KnobStyleKit : NSObject {
 19 | 
 20 |     //// Drawing Methods
 21 | 
 22 |     @objc dynamic public class func drawKnobOne(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 124, height: 124), resizing: ResizingBehavior = .aspectFit, knobValue: CGFloat = 0.5) {
 23 |         //// General Declarations
 24 |         let context = UIGraphicsGetCurrentContext()!
 25 |         
 26 |         //// Resize to Target Frame
 27 |         context.saveGState()
 28 |         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 124, height: 124), target: targetFrame)
 29 |         context.translateBy(x: resizedFrame.minX, y: resizedFrame.minY)
 30 |         context.scaleBy(x: resizedFrame.width / 124, y: resizedFrame.height / 124)
 31 |         let resizedShadowScale: CGFloat = min(resizedFrame.width / 124, resizedFrame.height / 124)
 32 | 
 33 | 
 34 |         //// Color Declarations
 35 |         let black = UIColor(red: 0.000, green: 0.000, blue: 0.000, alpha: 1.000)
 36 |         let shadowColor = UIColor(red: 1.000, green: 0.596, blue: 0.000, alpha: 1.000)
 37 |         let knobBottom = UIColor(red: 0.180, green: 0.180, blue: 0.192, alpha: 1.000)
 38 |         let knobLight = UIColor(red: 0.498, green: 0.498, blue: 0.510, alpha: 1.000)
 39 |         let knobTop2 = UIColor(red: 0.141, green: 0.141, blue: 0.161, alpha: 1.000)
 40 |         let orange2 = UIColor(red: 0.902, green: 0.533, blue: 0.008, alpha: 1.000)
 41 | 
 42 |         //// Gradient Declarations
 43 |         let edge2 = CGGradient(colorsSpace: nil, colors: [knobBottom.cgColor, knobBottom.blended(withFraction: 0.5, of: knobTop2).cgColor, knobTop2.cgColor, knobTop2.blended(withFraction: 0.5, of: knobLight).cgColor, knobLight.cgColor] as CFArray, locations: [0, 0.23, 0.41, 0.73, 1])!
 44 |         let lowerKnobGradient2 = CGGradient(colorsSpace: nil, colors: [knobTop2.cgColor, knobBottom.cgColor, knobLight.cgColor] as CFArray, locations: [0, 0.51, 1])!
 45 | 
 46 |         //// Shadow Declarations
 47 |         let shadow2 = NSShadow()
 48 |         shadow2.shadowColor = UIColor.black.withAlphaComponent(0.46)
 49 |         shadow2.shadowOffset = CGSize(width: 2, height: 8)
 50 |         shadow2.shadowBlurRadius = 5
 51 |         let shadow3 = NSShadow()
 52 |         shadow3.shadowColor = knobLight.withAlphaComponent(0.41 * knobLight.cgColor.alpha)
 53 |         shadow3.shadowOffset = CGSize(width: 0, height: 10)
 54 |         shadow3.shadowBlurRadius = 5
 55 |         let shadow4 = NSShadow()
 56 |         shadow4.shadowColor = shadowColor
 57 |         shadow4.shadowOffset = CGSize(width: 0, height: 0)
 58 |         shadow4.shadowBlurRadius = 12
 59 | 
 60 |         //// Variable Declarations
 61 |         let knobAngle: CGFloat = -240 * knobValue
 62 | 
 63 |         //// Knob
 64 |         context.saveGState()
 65 |         context.translateBy(x: 3, y: 3)
 66 | 
 67 | 
 68 | 
 69 |         //// BlackBackground Drawing
 70 |         let blackBackgroundPath = UIBezierPath(ovalIn: CGRect(x: -1, y: -1, width: 120, height: 120))
 71 |         black.setFill()
 72 |         blackBackgroundPath.fill()
 73 | 
 74 | 
 75 |         //// GradientKnob 2 Drawing
 76 |         let gradientKnob2Path = UIBezierPath(ovalIn: CGRect(x: 8, y: 8, width: 102, height: 102))
 77 |         context.saveGState()
 78 |         gradientKnob2Path.addClip()
 79 |         context.drawLinearGradient(lowerKnobGradient2, start: CGPoint(x: 59, y: 110), end: CGPoint(x: 59, y: 8), options: [])
 80 |         context.restoreGState()
 81 | 
 82 | 
 83 |         //// GradientKnob Drawing
 84 |         let gradientKnobPath = UIBezierPath(ovalIn: CGRect(x: 14, y: 14, width: 90, height: 90))
 85 |         context.saveGState()
 86 |         context.setShadow(offset: CGSize(width: shadow2.shadowOffset.width * resizedShadowScale, height: shadow2.shadowOffset.height * resizedShadowScale), blur: shadow2.shadowBlurRadius * resizedShadowScale, color: (shadow2.shadowColor as! UIColor).cgColor)
 87 |         context.beginTransparencyLayer(auxiliaryInfo: nil)
 88 |         gradientKnobPath.addClip()
 89 |         context.drawLinearGradient(edge2, start: CGPoint(x: 59, y: 104), end: CGPoint(x: 59, y: 14), options: [])
 90 |         context.endTransparencyLayer()
 91 | 
 92 |         ////// GradientKnob Inner Shadow
 93 |         context.saveGState()
 94 |         context.clip(to: gradientKnobPath.bounds)
 95 |         context.setShadow(offset: CGSize.zero, blur: 0)
 96 |         context.setAlpha((shadow3.shadowColor as! UIColor).cgColor.alpha)
 97 |         context.beginTransparencyLayer(auxiliaryInfo: nil)
 98 |         let gradientKnobOpaqueShadow = (shadow3.shadowColor as! UIColor).withAlphaComponent(1)
 99 |         context.setShadow(offset: CGSize(width: shadow3.shadowOffset.width * resizedShadowScale, height: shadow3.shadowOffset.height * resizedShadowScale), blur: shadow3.shadowBlurRadius * resizedShadowScale, color: gradientKnobOpaqueShadow.cgColor)
100 |         context.setBlendMode(.sourceOut)
101 |         context.beginTransparencyLayer(auxiliaryInfo: nil)
102 | 
103 |         gradientKnobOpaqueShadow.setFill()
104 |         gradientKnobPath.fill()
105 | 
106 |         context.endTransparencyLayer()
107 |         context.endTransparencyLayer()
108 |         context.restoreGState()
109 | 
110 |         context.restoreGState()
111 | 
112 | 
113 | 
114 |         //// IndicatorGroup
115 |         //// Indicator Drawing
116 |         context.saveGState()
117 |         context.translateBy(x: 59, y: 59)
118 |         context.rotate(by: -(knobAngle - 240) * CGFloat.pi/180)
119 | 
120 |         let indicatorPath = UIBezierPath(rect: CGRect(x: -3, y: -45, width: 6, height: 17))
121 |         context.saveGState()
122 |         context.setShadow(offset: CGSize(width: shadow4.shadowOffset.width * resizedShadowScale, height: shadow4.shadowOffset.height * resizedShadowScale), blur: shadow4.shadowBlurRadius * resizedShadowScale, color: (shadow4.shadowColor as! UIColor).cgColor)
123 |         orange2.setFill()
124 |         indicatorPath.fill()
125 |         context.restoreGState()
126 | 
127 | 
128 |         context.restoreGState()
129 | 
130 | 
131 | 
132 | 
133 | 
134 |         context.restoreGState()
135 |         
136 |         context.restoreGState()
137 | 
138 |     }
139 | 
140 | 
141 | 
142 | 
143 |     @objc(KnobStyleKitResizingBehavior)
144 |     public enum ResizingBehavior: Int {
145 |         case aspectFit /// The content is proportionally resized to fit into the target rectangle.
146 |         case aspectFill /// The content is proportionally resized to completely fill the target rectangle.
147 |         case stretch /// The content is stretched to match the entire target rectangle.
148 |         case center /// The content is centered in the target rectangle, but it is NOT resized.
149 | 
150 |         public func apply(rect: CGRect, target: CGRect) -> CGRect {
151 |             if rect == target || target == CGRect.zero {
152 |                 return rect
153 |             }
154 | 
155 |             var scales = CGSize.zero
156 |             scales.width = abs(target.width / rect.width)
157 |             scales.height = abs(target.height / rect.height)
158 | 
159 |             switch self {
160 |                 case .aspectFit:
161 |                     scales.width = min(scales.width, scales.height)
162 |                     scales.height = scales.width
163 |                 case .aspectFill:
164 |                     scales.width = max(scales.width, scales.height)
165 |                     scales.height = scales.width
166 |                 case .stretch:
167 |                     break
168 |                 case .center:
169 |                     scales.width = 1
170 |                     scales.height = 1
171 |             }
172 | 
173 |             var result = rect.standardized
174 |             result.size.width *= scales.width
175 |             result.size.height *= scales.height
176 |             result.origin.x = target.minX + (target.width - result.width) / 2
177 |             result.origin.y = target.minY + (target.height - result.height) / 2
178 |             return result
179 |         }
180 |     }
181 | }
182 | 
183 | 
184 | 
185 | private extension UIColor {
186 |     func blended(withFraction fraction: CGFloat, of color: UIColor) -> UIColor {
187 |         var r1: CGFloat = 1, g1: CGFloat = 1, b1: CGFloat = 1, a1: CGFloat = 1
188 |         var r2: CGFloat = 1, g2: CGFloat = 1, b2: CGFloat = 1, a2: CGFloat = 1
189 | 
190 |         self.getRed(&r1, green: &g1, blue: &b1, alpha: &a1)
191 |         color.getRed(&r2, green: &g2, blue: &b2, alpha: &a2)
192 | 
193 |         return UIColor(red: r1 * (1 - fraction) + r2 * fraction,
194 |             green: g1 * (1 - fraction) + g2 * fraction,
195 |             blue: b1 * (1 - fraction) + b2 * fraction,
196 |             alpha: a1 * (1 - fraction) + a2 * fraction);
197 |     }
198 | }
199 | 


--------------------------------------------------------------------------------
/KnobView.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  KnobView.swift
 3 | //  SynthUISpike
 4 | //
 5 | //  Created by Matthew Fecher on 7/20/17.
 6 | //  Copyright © 2017 Matthew Fecher. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | protocol KnobDelegate {
12 |     func updateKnobValue(_ value: Double, tag: Int)
13 | }
14 | 
15 | @IBDesignable
16 | class KnobView: UIView {
17 |     
18 |     var delegate: KnobDelegate?
19 | 
20 |     var minimum = 0.0 {
21 |         didSet {
22 |             self.knobValue = CGFloat((value - minimum) / (maximum - minimum))
23 |         }
24 |     }
25 |     var maximum = 1.0 {
26 |         didSet {
27 |             self.knobValue = CGFloat((value - minimum) / (maximum - minimum))
28 |         }
29 |     }
30 |     
31 |     var value: Double = 0.5 {
32 |         didSet {
33 |             if value > maximum {
34 |                 value = maximum
35 |             }
36 |             if value < minimum {
37 |                 value = minimum
38 |             }
39 |             self.knobValue = CGFloat((value - minimum) / (maximum - minimum))
40 |         }
41 |     }
42 |     
43 |     // Knob properties
44 |     var knobValue: CGFloat = 0.5 {
45 |         didSet {
46 |             setNeedsDisplay()
47 |     
48 |         }
49 |     }
50 |     var knobFill: CGFloat = 0
51 |     var knobSensitivity = 0.005
52 |     var lastX: CGFloat = 0
53 |     var lastY: CGFloat = 0
54 |     
55 |     // Init / Lifecycle
56 |     override init(frame: CGRect) {
57 |         super.init(frame: frame)
58 |         contentMode = .redraw
59 |     }
60 |     
61 |     required init?(coder: NSCoder) {
62 |         super.init(coder: coder)
63 |         self.isUserInteractionEnabled = true
64 |         contentMode = .redraw
65 |     }
66 |     
67 |     override func prepareForInterfaceBuilder() {
68 |         super.prepareForInterfaceBuilder()
69 |         
70 |         contentMode = .scaleAspectFit
71 |         clipsToBounds = true
72 |     }
73 |     
74 |     class override var requiresConstraintBasedLayout: Bool {
75 |         return true
76 |     }
77 |     
78 |     override func draw(_ rect: CGRect) {
79 |         KnobStyleKit.drawKnobOne(frame: CGRect(x:0,y:0, width: self.bounds.width, height: self.bounds.height), knobValue: knobValue)
80 |     }
81 |     
82 |     // Helper
83 |     func setPercentagesWithTouchPoint(_ touchPoint: CGPoint) {
84 |         // Knobs assume up or right is increasing, and down or left is decreasing
85 |         
86 |         let horizontalChange = Double(touchPoint.x - lastX) * knobSensitivity
87 |         value += horizontalChange * (maximum - minimum)
88 |         
89 |         let verticalChange = Double(touchPoint.y - lastY) * knobSensitivity
90 |         value -= verticalChange * (maximum - minimum)
91 |         
92 |         lastX = touchPoint.x
93 |         lastY = touchPoint.y
94 |         
95 |         delegate?.updateKnobValue(value, tag: self.tag)
96 |     }
97 |     
98 | }
99 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # SynthKnobExample
 2 | 
 3 | Simple Example of AudioKit Synth Knobs. Vector based. 
 4 | 
 5 | ![screenshot](http://imgur.com/ebuE9sp.png)
 6 | 
 7 | PaintCode file is included in main directory.  
 8 | Resize in Interface Builder!
 9 | 
10 | ![knob in ib](https://i.imgflip.com/1svkul.gif)
11 | 
12 | For an example of Knobs using callbacks (instead of delegate pattern) see this repo:
13 | [CallbackKnob](https://github.com/swiftcodex/CallbackKnob)
14 | 


--------------------------------------------------------------------------------
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:SynthUISpike.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


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10 |             buildForTesting = "YES"
11 |             buildForRunning = "YES"
12 |             buildForProfiling = "YES"
13 |             buildForArchiving = "YES"
14 |             buildForAnalyzing = "YES">
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16 |                BuildableIdentifier = "primary"
17 |                BlueprintIdentifier = "944156D11F2121CC00C139B9"
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19 |                BlueprintName = "SynthUISpike"
20 |                ReferencedContainer = "container:SynthUISpike.xcodeproj">
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22 |          </BuildActionEntry>
23 |       </BuildActionEntries>
24 |    </BuildAction>
25 |    <TestAction
26 |       buildConfiguration = "Debug"
27 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
28 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
29 |       shouldUseLaunchSchemeArgsEnv = "YES">
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 4 | <dict>
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 6 | 	<dict>
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10 | 			<integer>0</integer>
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13 | 	<key>SuppressBuildableAutocreation</key>
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--------------------------------------------------------------------------------
/SynthUISpike/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  SynthUISpike
 4 | //
 5 | //  Created by Matthew Fecher on 7/20/17.
 6 | //  Copyright © 2017 Matthew Fecher. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | @UIApplicationMain
12 | class AppDelegate: UIResponder, UIApplicationDelegate {
13 | 
14 |     var window: UIWindow?
15 | 
16 | 
17 |     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
18 |         // Override point for customization after application launch.
19 |         return true
20 |     }
21 | 
22 |     func applicationWillResignActive(_ application: UIApplication) {
23 |         // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
24 |         // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
25 |     }
26 | 
27 |     func applicationDidEnterBackground(_ application: UIApplication) {
28 |         // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
29 |         // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
30 |     }
31 | 
32 |     func applicationWillEnterForeground(_ application: UIApplication) {
33 |         // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
34 |     }
35 | 
36 |     func applicationDidBecomeActive(_ application: UIApplication) {
37 |         // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
38 |     }
39 | 
40 |     func applicationWillTerminate(_ application: UIApplication) {
41 |         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
42 |     }
43 | 
44 | 
45 | }
46 | 
47 | 


--------------------------------------------------------------------------------
/SynthUISpike/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "20x20",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "20x20",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "29x29",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "29x29",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "40x40",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "40x40",
31 |       "scale" : "3x"
32 |     },
33 |     {
34 |       "idiom" : "iphone",
35 |       "size" : "60x60",
36 |       "scale" : "2x"
37 |     },
38 |     {
39 |       "idiom" : "iphone",
40 |       "size" : "60x60",
41 |       "scale" : "3x"
42 |     },
43 |     {
44 |       "idiom" : "ipad",
45 |       "size" : "20x20",
46 |       "scale" : "1x"
47 |     },
48 |     {
49 |       "idiom" : "ipad",
50 |       "size" : "20x20",
51 |       "scale" : "2x"
52 |     },
53 |     {
54 |       "idiom" : "ipad",
55 |       "size" : "29x29",
56 |       "scale" : "1x"
57 |     },
58 |     {
59 |       "idiom" : "ipad",
60 |       "size" : "29x29",
61 |       "scale" : "2x"
62 |     },
63 |     {
64 |       "idiom" : "ipad",
65 |       "size" : "40x40",
66 |       "scale" : "1x"
67 |     },
68 |     {
69 |       "idiom" : "ipad",
70 |       "size" : "40x40",
71 |       "scale" : "2x"
72 |     },
73 |     {
74 |       "idiom" : "ipad",
75 |       "size" : "76x76",
76 |       "scale" : "1x"
77 |     },
78 |     {
79 |       "idiom" : "ipad",
80 |       "size" : "76x76",
81 |       "scale" : "2x"
82 |     },
83 |     {
84 |       "idiom" : "ipad",
85 |       "size" : "83.5x83.5",
86 |       "scale" : "2x"
87 |     }
88 |   ],
89 |   "info" : {
90 |     "version" : 1,
91 |     "author" : "xcode"
92 |   }
93 | }


--------------------------------------------------------------------------------
/SynthUISpike/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
 5 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--View Controller-->
 9 |         <scene sceneID="EHf-IW-A2E">
10 |             <objects>
11 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
12 |                     <layoutGuides>
13 |                         <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
14 |                         <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
15 |                     </layoutGuides>
16 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
17 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
18 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
19 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
20 |                     </view>
21 |                 </viewController>
22 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
23 |             </objects>
24 |             <point key="canvasLocation" x="53" y="375"/>
25 |         </scene>
26 |     </scenes>
27 | </document>
28 | 


--------------------------------------------------------------------------------
/SynthUISpike/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16F43c" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
 3 |     <device id="ipad9_7" orientation="landscape">
 4 |         <adaptation id="fullscreen"/>
 5 |     </device>
 6 |     <dependencies>
 7 |         <deployment identifier="iOS"/>
 8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
 9 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
10 |     </dependencies>
11 |     <scenes>
12 |         <!--View Controller-->
13 |         <scene sceneID="tne-QT-ifu">
14 |             <objects>
15 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="SynthUISpike" customModuleProvider="target" sceneMemberID="viewController">
16 |                     <layoutGuides>
17 |                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
18 |                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
19 |                     </layoutGuides>
20 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
21 |                         <rect key="frame" x="0.0" y="0.0" width="1024" height="337"/>
22 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
23 |                         <subviews>
24 |                             <view tag="100" contentMode="center" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="DJU-Fx-KsR" customClass="KnobView" customModule="SynthUISpike" customModuleProvider="target">
25 |                                 <rect key="frame" x="155" y="103" width="130" height="130"/>
26 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
27 |                                 <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
28 |                             </view>
29 |                             <view tag="101" contentMode="center" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="7A7-28-Zh2" customClass="KnobView" customModule="SynthUISpike" customModuleProvider="target">
30 |                                 <rect key="frame" x="354" y="113" width="110" height="110"/>
31 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
32 |                                 <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
33 |                             </view>
34 |                             <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" fixedFrame="YES" text="Knob Value: " textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="iCj-20-bn8">
35 |                                 <rect key="frame" x="231" y="38" width="179" height="21"/>
36 |                                 <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
37 |                                 <fontDescription key="fontDescription" name="Helvetica" family="Helvetica" pointSize="20"/>
38 |                                 <color key="textColor" red="0.90196078431372551" green="0.53333333333333333" blue="0.0078431372549019607" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
39 |                                 <nil key="highlightedColor"/>
40 |                             </label>
41 |                         </subviews>
42 |                         <color key="backgroundColor" red="0.21176470588235294" green="0.20784313725490194" blue="0.21568627450980393" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
43 |                     </view>
44 |                     <value key="contentSizeForViewInPopover" type="size" width="1024" height="337"/>
45 |                     <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
46 |                     <size key="freeformSize" width="1024" height="337"/>
47 |                     <connections>
48 |                         <outlet property="displayLabel" destination="iCj-20-bn8" id="UtE-vd-65M"/>
49 |                         <outlet property="knobOne" destination="DJU-Fx-KsR" id="R5h-tc-9Hx"/>
50 |                         <outlet property="knobTwo" destination="7A7-28-Zh2" id="cJr-dX-jRB"/>
51 |                     </connections>
52 |                 </viewController>
53 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
54 |             </objects>
55 |             <point key="canvasLocation" x="31.640624999999996" y="65.234375"/>
56 |         </scene>
57 |     </scenes>
58 | </document>
59 | 


--------------------------------------------------------------------------------
/SynthUISpike/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>LSRequiresIPhoneOS</key>
22 | 	<true/>
23 | 	<key>UILaunchStoryboardName</key>
24 | 	<string>LaunchScreen</string>
25 | 	<key>UIMainStoryboardFile</key>
26 | 	<string>Main</string>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UIStatusBarHidden</key>
32 | 	<true/>
33 | 	<key>UISupportedInterfaceOrientations</key>
34 | 	<array>
35 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
36 | 		<string>UIInterfaceOrientationLandscapeRight</string>
37 | 	</array>
38 | 	<key>UISupportedInterfaceOrientations~ipad</key>
39 | 	<array>
40 | 		<string>UIInterfaceOrientationPortrait</string>
41 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
42 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
43 | 		<string>UIInterfaceOrientationLandscapeRight</string>
44 | 	</array>
45 | </dict>
46 | </plist>
47 | 


--------------------------------------------------------------------------------
/SynthUISpike/ViewController.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  ViewController.swift
 3 | //  SynthUISpike
 4 | //
 5 | //  Created by Matthew Fecher on 7/20/17.
 6 | //  Copyright © 2017 Matthew Fecher. All rights reserved.
 7 | //
 8 | 
 9 | import UIKit
10 | 
11 | class ViewController: UIViewController {
12 | 
13 |     @IBOutlet weak var knobOne: KnobView!
14 |     @IBOutlet weak var knobTwo: KnobView!
15 |     @IBOutlet weak var displayLabel: UILabel!
16 |     
17 |     enum ControlTag: Int {
18 |         case control1 = 100
19 |         case control2 = 101
20 |     }
21 |     
22 |     override func viewDidLoad() {
23 |         super.viewDidLoad()
24 |         // Do any additional setup after loading the view, typically from a nib.
25 |         
26 |         knobOne.delegate = self
27 |         knobTwo.delegate = self
28 |     }
29 | 
30 |   
31 | }
32 | 
33 | 
34 | //*****************************************************************
35 | // MARK: - 🎛 Knob Delegate
36 | //*****************************************************************
37 | 
38 | extension ViewController: KnobDelegate {
39 |     
40 |     func updateKnobValue(_ value: Double, tag: Int) {
41 |         
42 |         switch (tag) {
43 |             
44 |         // VCOs
45 |         case ControlTag.control1.rawValue:
46 |             let intValue = Int(floor(value * 10))
47 |             let message = "Knob One: \(intValue)"
48 |             displayLabel.text = message
49 |             
50 |         case ControlTag.control2.rawValue:
51 |             let message = "Knob Two: \(String(format: "%.02f", value))"
52 |             displayLabel.text = message
53 |             
54 |               default:
55 |             break
56 |         }
57 |     }
58 | }
59 | 


--------------------------------------------------------------------------------