From 79f3157edfb7652dadcbebb678fe8774d1d67a56 Mon Sep 17 00:00:00 2001
From: nixzhu <zhuhongxu@gmail.com>
Date: Tue, 15 Dec 2015 11:04:19 +0800
Subject: [PATCH] add FPSLabel

---
 Yep.xcodeproj/project.pbxproj   |  4 +++
 Yep/Views/Labels/FPSLabel.swift | 57 +++++++++++++++++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 Yep/Views/Labels/FPSLabel.swift

diff --git a/Yep.xcodeproj/project.pbxproj b/Yep.xcodeproj/project.pbxproj
index 8b24c3fc..dab817cc 100644
--- a/Yep.xcodeproj/project.pbxproj
+++ b/Yep.xcodeproj/project.pbxproj
@@ -320,6 +320,7 @@
 		50F5AF991BBBD02A0033C9BC /* FeedMediaCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50F5AF971BBBD02A0033C9BC /* FeedMediaCell.swift */; };
 		50F5AF9A1BBBD02A0033C9BC /* FeedMediaCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = 50F5AF981BBBD02A0033C9BC /* FeedMediaCell.xib */; };
 		50FA9A441B661698009BF2A0 /* UIViewController+Yep.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50FA9A431B661698009BF2A0 /* UIViewController+Yep.swift */; };
+		50FD753D1C1FB4AC0050A382 /* FPSLabel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 50FD753C1C1FB4AC0050A382 /* FPSLabel.swift */; };
 		6A56328E1BC90A4500397B53 /* DiscoverCardUserCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6A56328C1BC90A4500397B53 /* DiscoverCardUserCell.swift */; };
 		6A56328F1BC90A4500397B53 /* DiscoverCardUserCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = 6A56328D1BC90A4500397B53 /* DiscoverCardUserCell.xib */; };
 		6A5632931BC911CB00397B53 /* DiscoverNormalUserCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 6A5632911BC911CB00397B53 /* DiscoverNormalUserCell.swift */; };
@@ -678,6 +679,7 @@
 		50F5AF971BBBD02A0033C9BC /* FeedMediaCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = FeedMediaCell.swift; path = Views/Cells/FeedMedia/FeedMediaCell.swift; sourceTree = "<group>"; };
 		50F5AF981BBBD02A0033C9BC /* FeedMediaCell.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; name = FeedMediaCell.xib; path = Views/Cells/FeedMedia/FeedMediaCell.xib; sourceTree = "<group>"; };
 		50FA9A431B661698009BF2A0 /* UIViewController+Yep.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = "UIViewController+Yep.swift"; path = "Extensions/UIViewController+Yep.swift"; sourceTree = "<group>"; };
+		50FD753C1C1FB4AC0050A382 /* FPSLabel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = FPSLabel.swift; path = Views/Labels/FPSLabel.swift; sourceTree = "<group>"; };
 		6A56328C1BC90A4500397B53 /* DiscoverCardUserCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = DiscoverCardUserCell.swift; path = Views/Cells/DiscoverCardUser/DiscoverCardUserCell.swift; sourceTree = "<group>"; };
 		6A56328D1BC90A4500397B53 /* DiscoverCardUserCell.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; name = DiscoverCardUserCell.xib; path = Views/Cells/DiscoverCardUser/DiscoverCardUserCell.xib; sourceTree = "<group>"; };
 		6A5632911BC911CB00397B53 /* DiscoverNormalUserCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = DiscoverNormalUserCell.swift; path = Views/Cells/DiscoverNormalUser/DiscoverNormalUserCell.swift; sourceTree = "<group>"; };
@@ -2154,6 +2156,7 @@
 			isa = PBXGroup;
 			children = (
 				50F2B97A1B2EEAF800F840CC /* NavigationTitleLabel.swift */,
+				50FD753C1C1FB4AC0050A382 /* FPSLabel.swift */,
 			);
 			name = Labels;
 			sourceTree = "<group>";
@@ -2798,6 +2801,7 @@
 				50F2B97B1B2EEAF800F840CC /* NavigationTitleLabel.swift in Sources */,
 				501690231BFEA6C30096C4F9 /* FeedBasicCell.swift in Sources */,
 				50A820241B969B0F007CD30E /* NSTimeZone+Yep.swift in Sources */,
+				50FD753D1C1FB4AC0050A382 /* FPSLabel.swift in Sources */,
 				504F415A1AD5028200FBB19A /* SkillCell.swift in Sources */,
 				84385C481B85AC890071130D /* ShowStepMatchViewController.swift in Sources */,
 				0A0027D61B19CEC000AD4BE0 /* ConversationOperationQueue.swift in Sources */,
diff --git a/Yep/Views/Labels/FPSLabel.swift b/Yep/Views/Labels/FPSLabel.swift
new file mode 100644
index 00000000..35966187
--- /dev/null
+++ b/Yep/Views/Labels/FPSLabel.swift
@@ -0,0 +1,57 @@
+//
+//  FPSLabel.swift
+//  Yep
+//
+//  Created by nixzhu on 15/12/15.
+//  Copyright © 2015年 Catch Inc. All rights reserved.
+//
+
+import UIKit
+
+class FPSLabel: UILabel {
+
+    private var displayLink: CADisplayLink?
+    private var lastTime: NSTimeInterval = 0
+    private var count: Int = 0
+
+    deinit {
+        displayLink?.invalidate()
+    }
+
+    override func didMoveToSuperview() {
+        super.didMoveToSuperview()
+
+        run()
+    }
+
+    func run() {
+
+        displayLink = CADisplayLink(target: self, selector: "tick:")
+        displayLink?.addToRunLoop(NSRunLoop.currentRunLoop(), forMode: NSRunLoopCommonModes)
+    }
+
+    func tick(displayLink: CADisplayLink) {
+
+        if lastTime == 0 {
+            lastTime = displayLink.timestamp
+            return
+        }
+
+        count += 1
+
+        let timeDelta = displayLink.timestamp - lastTime
+
+        if timeDelta < 1 {
+            return
+        }
+
+        lastTime = displayLink.timestamp
+
+        let fps: Double = Double(count) / timeDelta
+
+        count = 0
+
+        text = String(format: "%.1f", fps)
+    }
+}
+