From 66e6f9b321d5dc655453ce51fe5224e6cec082a2 Mon Sep 17 00:00:00 2001
From: Francois Nadeau <contact@francoisnadeau.com>
Date: Wed, 4 Apr 2018 11:04:41 -0400
Subject: [PATCH 1/2] BUG Fix: Changing color values in IB has no effect

Changing either the colors pgNormalColor or pgHighlightedColor in IB does not have any effect in IB and the app when it is executed.

Adding these two lines fixes that problem.
---
 CircularSlider/Classes/CircularSlider.swift | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CircularSlider/Classes/CircularSlider.swift b/CircularSlider/Classes/CircularSlider.swift
index 6b87cc0..97cbc71 100644
--- a/CircularSlider/Classes/CircularSlider.swift
+++ b/CircularSlider/Classes/CircularSlider.swift
@@ -136,12 +136,14 @@ open class CircularSlider: UIView {
     open var pgNormalColor: UIColor = UIColor.darkGray {
         didSet {
             appearanceProgressLayer()
+            appearanceKnobLayer()
         }
     }
     @IBInspectable
     open var pgHighlightedColor: UIColor = UIColor.green {
         didSet {
             appearanceProgressLayer()
+            appearanceKnobLayer()
         }
     }
     @IBInspectable

From 00369a062b3bdf4a6836780c2fde117826f20a80 Mon Sep 17 00:00:00 2001
From: FrancoisNadeau <contact@FrancoisNadeau.com>
Date: Wed, 4 Apr 2018 11:25:49 -0400
Subject: [PATCH 2/2] DelegateUpdate : Added hooks to know when the user begins
 and ends changing the knob value

---
 CircularSlider/Classes/CircularSlider.swift | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/CircularSlider/Classes/CircularSlider.swift b/CircularSlider/Classes/CircularSlider.swift
index 97cbc71..26889ec 100644
--- a/CircularSlider/Classes/CircularSlider.swift
+++ b/CircularSlider/Classes/CircularSlider.swift
@@ -14,6 +14,8 @@ import UIKit
     @objc optional func circularSlider(_ circularSlider: CircularSlider, valueForValue value: Float) -> Float
     @objc optional func circularSlider(_ circularSlider: CircularSlider, didBeginEditing textfield: UITextField)
     @objc optional func circularSlider(_ circularSlider: CircularSlider, didEndEditing textfield: UITextField)
+    @objc optional func circularSlider(_ circularSlider: CircularSlider, didBeginValueChange value: Float)
+    @objc optional func circularSlider(_ circularSlider: CircularSlider, didEndValueChange value: Float)
     //  optional func circularSlider(circularSlider: CircularSlider, attributeTextForValue value: Float) -> NSAttributedString
 }
 
@@ -405,6 +407,17 @@ open class CircularSlider: UIView {
         
         let valueForAngle = Float(rotationAngle - startAngle) / Float(angleRange) * valueRange + minimumValue
         setValue(valueForAngle, animated: false)
+        
+        switch gesture.state {
+        case .began:
+            delegate?.circularSlider?(self, didBeginValueChange: valueForAngle)
+            break
+        case .ended:
+            delegate?.circularSlider?(self, didEndValueChange: valueForAngle)
+            break
+        default:
+            break
+        }
     }
     
     func cancelAnimation() {