Marquee label for callview controller

// FREEBIE

Signal.xcodeproj/project.pbxproj

@@ -219,6 +219,7 @@
 		45DF5DF21DDB843F00C936C7 /* CompareSafetyNumbersActivity.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45DF5DF11DDB843F00C936C7 /* CompareSafetyNumbersActivity.swift */; };
 		45DF5DF31DDB843F00C936C7 /* CompareSafetyNumbersActivity.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45DF5DF11DDB843F00C936C7 /* CompareSafetyNumbersActivity.swift */; };
 		45E2E9201E153B3D00457AA0 /* Strings.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45E2E91F1E153B3D00457AA0 /* Strings.swift */; };
+		45E5A6991F61E6DE001E4A8A /* MarqueeLabel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45E5A6981F61E6DD001E4A8A /* MarqueeLabel.swift */; };
 		45E615161E8C590B0018AD52 /* DisplayableTextFilter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45E615151E8C590B0018AD52 /* DisplayableTextFilter.swift */; };
 		45E615171E8C59100018AD52 /* DisplayableTextFilter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45E615151E8C590B0018AD52 /* DisplayableTextFilter.swift */; };
 		45E7A6A81E71CA7E00D44FB5 /* DisplayableTextFilterTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45E7A6A61E71CA7E00D44FB5 /* DisplayableTextFilterTest.swift */; };
@@ -685,6 +686,7 @@
 		45E282DF1D08E6CC00ADD4C8 /* id */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = id; path = translations/id.lproj/Localizable.strings; sourceTree = "<group>"; };
 		45E2E91E1E13EE3500457AA0 /* OWSCallNotificationsAdaptee.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; name = OWSCallNotificationsAdaptee.h; path = UserInterface/OWSCallNotificationsAdaptee.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		45E2E91F1E153B3D00457AA0 /* Strings.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; lineEnding = 0; name = Strings.swift; path = UserInterface/Strings.swift; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.swift; };
+		45E5A6981F61E6DD001E4A8A /* MarqueeLabel.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = MarqueeLabel.swift; sourceTree = "<group>"; };
 		45E615151E8C590B0018AD52 /* DisplayableTextFilter.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DisplayableTextFilter.swift; sourceTree = "<group>"; };
 		45E7A6A61E71CA7E00D44FB5 /* DisplayableTextFilterTest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DisplayableTextFilterTest.swift; sourceTree = "<group>"; };
 		45F170AB1E2F0351003FC1F2 /* CallAudioSession.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CallAudioSession.swift; sourceTree = "<group>"; };
@@ -1478,6 +1480,7 @@
 		76EB052B18170B33006006FC /* Views */ = {
 			isa = PBXGroup;
 			children = (
+				45E5A6981F61E6DD001E4A8A /* MarqueeLabel.swift */,
 				452EA09D1EA7ABE00078744B /* AttachmentPointerView.swift */,
 				34E3E5671EC4B19400495BAC /* AudioProgressView.swift */,
 				45F3AEB51DFDE7900080CE33 /* AvatarImageView.swift */,
@@ -2396,6 +2399,7 @@
 				346B66311F4E29B200E5122F /* CropScaleImageViewController.swift in Sources */,
 				76EB058818170B33006006FC /* PropertyListPreferences.m in Sources */,
 				34330A611E788EA900DF2FB9 /* AttachmentUploadView.m in Sources */,
+				45E5A6991F61E6DE001E4A8A /* MarqueeLabel.swift in Sources */,
 				34B3F87D1E8DF1700035BE1A /* FullImageViewController.m in Sources */,
 				45666F7B1D9C0533008FE134 /* OWSDatabaseMigration.m in Sources */,
 				B90418E6183E9DD40038554A /* DateUtil.m in Sources */,

Signal/src/ViewControllers/CallViewController.swift

@@ -31,7 +31,7 @@ class CallViewController: OWSViewController, CallObserver, CallServiceObserver,
 
     // MARK: Contact Views
 
-    var contactNameLabel: UILabel!
+    var contactNameLabel: MarqueeLabel!
     var contactAvatarView: AvatarImageView!
     var callStatusLabel: UILabel!
     var callDurationTimer: Timer?
@@ -243,14 +243,25 @@ class CallViewController: OWSViewController, CallObserver, CallServiceObserver,
     }
 
     func createContactViews() {
-        contactNameLabel = UILabel()
+        contactNameLabel = MarqueeLabel()
+
+        // marquee config
+        contactNameLabel.type = .continuous
+        // This feels pretty slow when you're initially waiting for it, but when you're overlaying video calls, anything faster is distracting.
+        contactNameLabel.speed = .duration(30.0)
+        contactNameLabel.animationCurve = .easeInOut
+        contactNameLabel.fadeLength = 10.0
+        contactNameLabel.animationDelay = 5
+        // Add trailing space after the name scrolls before it wraps around and scrolls back in.
+        contactNameLabel.trailingBuffer = ScaleFromIPhone5(80.0)
+
+        // label config
         contactNameLabel.font = UIFont.ows_lightFont(withSize:ScaleFromIPhone5To7Plus(32, 40))
         contactNameLabel.textColor = UIColor.white
         contactNameLabel.layer.shadowOffset = CGSize.zero
         contactNameLabel.layer.shadowOpacity = 0.35
         contactNameLabel.layer.shadowRadius = 4
-        contactNameLabel.adjustsFontSizeToFitWidth = true
+
-        contactNameLabel.minimumScaleFactor = 0.7
         self.view.addSubview(contactNameLabel)
 
         callStatusLabel = UILabel()