From 1d39b9906693881aacc6e98cd34367e820a23c89 Mon Sep 17 00:00:00 2001
From: Panayot Cankov <Panayot.Cankov@telerik.com>
Date: Tue, 7 Jul 2015 18:01:43 +0300
Subject: [PATCH] FPS module will now correctly count frames while scrolling in
 iOS

---
 fps-meter/fps-native.ios.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fps-meter/fps-native.ios.ts b/fps-meter/fps-native.ios.ts
index d83d6df61..cc0c4db74 100644
--- a/fps-meter/fps-native.ios.ts
+++ b/fps-meter/fps-native.ios.ts
@@ -35,6 +35,9 @@ export class FPSCallback implements definition.FPSCallback {
         this.displayLink = CADisplayLink.displayLinkWithTargetSelector(this.impl, "handleFrame");
         this.displayLink.paused = true;
         this.displayLink.addToRunLoopForMode(NSRunLoop.currentRunLoop(), NSDefaultRunLoopMode);
+        // UIScrollView (including in UIITableView) will run a loop in UITrackingRunLoopMode during scrolling.
+        // If we do not add the CADisplayLink in this mode, it would appear paused during scrolling.
+        this.displayLink.addToRunLoopForMode(NSRunLoop.currentRunLoop(), UITrackingRunLoopMode);
     }
 
     public start() {