From bb878a6abbd31ae80382c1d0409db4d41e0d2dec Mon Sep 17 00:00:00 2001
From: Naoki Morita <namorit@gmail.com>
Date: Thu, 4 May 2017 03:04:30 +0900
Subject: [PATCH] Add getTouches demo

---
 Example/Example/DetailViewController.swift | 26 ++++++++++++++++++++++
 TouchVisualizer/Visualizer.swift           |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/Example/Example/DetailViewController.swift b/Example/Example/DetailViewController.swift
index 0068ce6..e201f40 100644
--- a/Example/Example/DetailViewController.swift
+++ b/Example/Example/DetailViewController.swift
@@ -12,6 +12,8 @@ class DetailViewController: UIViewController {
     
     var text: String?
     
+    weak var timer: Timer?
+    
     @IBOutlet weak private var textLabel: UILabel!
     
     override func viewDidLoad() {
@@ -20,4 +22,28 @@ class DetailViewController: UIViewController {
             self.textLabel.text = "No.\(text) cell is tapped."
         }
     }
+    
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        timer = Timer.scheduledTimer(timeInterval: 1.0/60.0, target: self, selector: #selector(logTouches(timer:)), userInfo: nil, repeats: true)
+    }
+    
+    override func viewDidDisappear(_ animated: Bool) {
+        super.viewDidDisappear(animated)
+        
+        timer?.invalidate()
+        timer = nil
+    }
+    
+    // Example for getting current touches
+    // * Caution: Touches here have been emmited before. For example `phase` is always `stationary`, 
+    //   it WAS `moved` at the time emmited.
+    //   So use `getTouches` func for limited debug purpose.
+    //   If you want to know the exact value, please override `handleEvent:` in UIWindow+Swizzle.swift.
+    func logTouches(timer: Timer) {
+        for (idx, touch) in Visualizer.getTouches().enumerated() {
+            print("[\(idx)] location: \(touch.location(in: self.view))")
+        }
+    }
 }
diff --git a/TouchVisualizer/Visualizer.swift b/TouchVisualizer/Visualizer.swift
index 5c6c7ac..09b1be4 100644
--- a/TouchVisualizer/Visualizer.swift
+++ b/TouchVisualizer/Visualizer.swift
@@ -126,7 +126,7 @@ extension Visualizer {
         return nil
     }
     
-    public func handleEvent(_ event: UIEvent) {
+    open func handleEvent(_ event: UIEvent) {
         if event.type != .touches {
             return
         }