From f92d449e5a3a3052a42242a6def07dc1a1c8cf55 Mon Sep 17 00:00:00 2001
From: Ben Vogelzang <bvogelzang@breuer.com>
Date: Sat, 10 Dec 2016 13:30:59 -0600
Subject: [PATCH] update thumbView shadow with animation. Closes #23

---
 SevenSwitch.swift | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/SevenSwitch.swift b/SevenSwitch.swift
index 13c7b26..d504345 100644
--- a/SevenSwitch.swift
+++ b/SevenSwitch.swift
@@ -308,6 +308,13 @@ import QuartzCore
                 self.isAnimating = false
         })
         
+        let shadowAnim = CABasicAnimation(keyPath: "shadowPath")
+        shadowAnim.duration = 0.3
+        shadowAnim.fromValue = thumbView.layer.shadowPath
+        shadowAnim.toValue = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
+        thumbView.layer.add(shadowAnim, forKey: "shadowPath")
+        thumbView.layer.shadowPath = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
+        
         return true
     }
     
@@ -446,6 +453,13 @@ import QuartzCore
             }, completion: { finished in
                 self.isAnimating = false
             })
+            
+            let shadowAnim = CABasicAnimation(keyPath: "shadowPath")
+            shadowAnim.duration = 0.3
+            shadowAnim.fromValue = thumbView.layer.shadowPath
+            shadowAnim.toValue = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
+            thumbView.layer.add(shadowAnim, forKey: "shadowPath")
+            thumbView.layer.shadowPath = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
         }
         else {
             if self.isTracking {
@@ -497,6 +511,13 @@ import QuartzCore
             }, completion: { finished in
                 self.isAnimating = false
             })
+            
+            let shadowAnim = CABasicAnimation(keyPath: "shadowPath")
+            shadowAnim.duration = 0.3
+            shadowAnim.fromValue = thumbView.layer.shadowPath
+            shadowAnim.toValue = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
+            thumbView.layer.add(shadowAnim, forKey: "shadowPath")
+            thumbView.layer.shadowPath = UIBezierPath(roundedRect: thumbView.bounds, cornerRadius: thumbView.layer.cornerRadius).cgPath
         }
         else {
             if (self.isTracking) {