From 3fb85da558b7eb5b8dade1003a3beb9371517cde Mon Sep 17 00:00:00 2001
From: Isaac <>
Date: Sat, 30 Dec 2023 00:56:25 +0400
Subject: [PATCH] Add call localization

---
 .../Telegram-iOS/en.lproj/Localizable.strings |  11 ++
 Tests/CallUITest/BUILD                        |   2 +-
 Tests/CallUITest/Sources/ViewController.swift |   2 +
 .../Sources/CallControllerNodeV2.swift        |   1 +
 .../Components/Calls/CallScreen/BUILD         |   1 +
 .../Call/Snow.imageset/Contents.json          |  21 ++++
 .../Call/Snow.imageset/Snow.png               | Bin 0 -> 8351 bytes
 .../Sources/Components/BackButtonView.swift   |  64 +++++++---
 .../Sources/Components/ButtonGroupView.swift  |  17 +--
 .../Sources/PrivateCallScreen.swift           | 119 +++++++++++++++---
 10 files changed, 197 insertions(+), 41 deletions(-)
 create mode 100644 submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Contents.json
 create mode 100644 submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Snow.png

diff --git a/Telegram/Telegram-iOS/en.lproj/Localizable.strings b/Telegram/Telegram-iOS/en.lproj/Localizable.strings
index 7b396c5bc7b..58bce9ff44e 100644
--- a/Telegram/Telegram-iOS/en.lproj/Localizable.strings
+++ b/Telegram/Telegram-iOS/en.lproj/Localizable.strings
@@ -4418,6 +4418,7 @@ Sorry for the inconvenience.";
 
 "Call.Mute" = "mute";
 "Call.Camera" = "camera";
+"Call.Video" = "video";
 "Call.Flip" = "flip";
 "Call.End" = "end";
 "Call.Speaker" = "speaker";
@@ -5646,6 +5647,7 @@ Sorry for the inconvenience.";
 "Call.CameraConfirmationText" = "Switch to video call?";
 "Call.CameraConfirmationConfirm" = "Switch";
 
+"Call.YourCameraOff" = "Your camera is off";
 "Call.YourMicrophoneOff" = "Your microphone is off";
 "Call.MicrophoneOff" = "%@'s microphone is off";
 "Call.CameraOff" = "%@'s camera is off";
@@ -10867,3 +10869,12 @@ Sorry for the inconvenience.";
 "Chat.PlayOnceMesasgeClose" = "Close";
 "Chat.PlayOnceMesasgeCloseAndDelete" = "Close and Delete";
 "Chat.PlayOnceMesasge.DisableScreenCapture" = "Sorry, you can't play this message while screen recording is active.";
+
+"Call.EncryptedAlertTitle" = "This call is end-to-end encrypted";
+"Call.EncryptedAlertText" = "If the emoji on %@'s screen are the same, this call is 100% secure.";
+"Call.EncryptionKeyTooltip" = "Encryption key of this call";
+"Call.StatusBusy" = "Line Busy";
+"Call.StatusDeclined" = "Call Declined";
+"Call.StatusFailed" = "Call Failed";
+"Call.StatusEnded" = "Call Ended";
+"Call.StatusMissed" = "Call Missed";
diff --git a/Tests/CallUITest/BUILD b/Tests/CallUITest/BUILD
index a809c0ad086..7cb591d9173 100644
--- a/Tests/CallUITest/BUILD
+++ b/Tests/CallUITest/BUILD
@@ -43,6 +43,7 @@ swift_library(
     deps = [
         "//submodules/Display",
         "//submodules/MetalEngine",
+        "//submodules/TelegramPresentationData",
         "//submodules/TelegramUI/Components/Calls/CallScreen",
     ],
 )
@@ -188,5 +189,4 @@ xcodeproj(
         },
     },
     default_xcode_configuration = "Debug"
-
 )
diff --git a/Tests/CallUITest/Sources/ViewController.swift b/Tests/CallUITest/Sources/ViewController.swift
index 7641bd93e7b..3178bdc66b5 100644
--- a/Tests/CallUITest/Sources/ViewController.swift
+++ b/Tests/CallUITest/Sources/ViewController.swift
@@ -4,6 +4,7 @@ import MetalEngine
 import Display
 import CallScreen
 import ComponentFlow
+import TelegramPresentationData
 
 private extension UIScreen {
     private static let cornerRadiusKey: String = {
@@ -24,6 +25,7 @@ private extension UIScreen {
 public final class ViewController: UIViewController {    
     private var callScreenView: PrivateCallScreen?
     private var callState: PrivateCallScreen.State = PrivateCallScreen.State(
+        strings: defaultPresentationStrings,
         lifecycleState: .connecting,
         name: "Emma Walters",
         shortName: "Emma",
diff --git a/submodules/TelegramCallsUI/Sources/CallControllerNodeV2.swift b/submodules/TelegramCallsUI/Sources/CallControllerNodeV2.swift
index 812b95aee77..5fa6b1cd5a3 100644
--- a/submodules/TelegramCallsUI/Sources/CallControllerNodeV2.swift
+++ b/submodules/TelegramCallsUI/Sources/CallControllerNodeV2.swift
@@ -157,6 +157,7 @@ final class CallControllerNodeV2: ViewControllerTracingNode, CallControllerNodeP
         }
         
         self.callScreenState = PrivateCallScreen.State(
+            strings: presentationData.strings,
             lifecycleState: .connecting,
             name: " ",
             shortName: " ",
diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/BUILD b/submodules/TelegramUI/Components/Calls/CallScreen/BUILD
index ac35b7c0f23..6773bd07e81 100644
--- a/submodules/TelegramUI/Components/Calls/CallScreen/BUILD
+++ b/submodules/TelegramUI/Components/Calls/CallScreen/BUILD
@@ -68,6 +68,7 @@ swift_library(
         "//submodules/TelegramUI/Components/AnimatedTextComponent",
         "//submodules/AppBundle",
         "//submodules/UIKitRuntimeUtils",
+        "//submodules/TelegramPresentationData",
     ],
     visibility = [
         "//visibility:public",
diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Contents.json b/submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Contents.json
new file mode 100644
index 00000000000..de2d610148c
--- /dev/null
+++ b/submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Contents.json
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "scale" : "1x"
+    },
+    {
+      "filename" : "Snow.png",
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}
diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Snow.png b/submodules/TelegramUI/Components/Calls/CallScreen/CallScreenAssets.xcassets/Call/Snow.imageset/Snow.png
new file mode 100644
index 0000000000000000000000000000000000000000..2dddf3fa21b1642b5586706b8e65bd18683c57d5
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HcmV?d00001

diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/BackButtonView.swift b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/BackButtonView.swift
index 0fed60cf04a..696d0a5727f 100644
--- a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/BackButtonView.swift
+++ b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/BackButtonView.swift
@@ -3,34 +3,39 @@ import UIKit
 import Display
 
 final class BackButtonView: HighlightableButton {
+    private struct Params: Equatable {
+        var text: String
+        
+        init(text: String) {
+            self.text = text
+        }
+    }
+    
+    private struct Layout: Equatable {
+        var params: Params
+        var size: CGSize
+        
+        init(params: Params, size: CGSize) {
+            self.params = params
+            self.size = size
+        }
+    }
+    
     private let iconView: UIImageView
     private let textView: TextView
     
-    let size: CGSize
+    private var currentLayout: Layout?
     
     var pressAction: (() -> Void)?
     
-    init(text: String) {
+    override init(frame: CGRect) {
         self.iconView = UIImageView(image: NavigationBar.backArrowImage(color: .white))
         self.iconView.isUserInteractionEnabled = false
         
         self.textView = TextView()
         self.textView.isUserInteractionEnabled = false
         
-        let spacing: CGFloat = 8.0
-        
-        var iconSize: CGSize = self.iconView.image?.size ?? CGSize(width: 2.0, height: 2.0)
-        let iconScaleFactor: CGFloat = 0.9
-        iconSize.width = floor(iconSize.width * iconScaleFactor)
-        iconSize.height = floor(iconSize.height * iconScaleFactor)
-        
-        let textSize = self.textView.update(string: text, fontSize: 17.0, fontWeight: UIFont.Weight.regular.rawValue, color: .white, constrainedWidth: 100.0, transition: .immediate)
-        self.size = CGSize(width: iconSize.width + spacing + textSize.width, height: textSize.height)
-        
-        self.iconView.frame = CGRect(origin: CGPoint(x: 0.0, y: floorToScreenPixels((self.size.height - iconSize.height) * 0.5)), size: iconSize)
-        self.textView.frame = CGRect(origin: CGPoint(x: iconSize.width + spacing, y: floorToScreenPixels((self.size.height - textSize.height) * 0.5)), size: textSize)
-        
-        super.init(frame: CGRect())
+        super.init(frame: frame)
         
         self.addSubview(self.iconView)
         self.addSubview(self.textView)
@@ -53,4 +58,31 @@ final class BackButtonView: HighlightableButton {
             return nil
         }
     }
+    
+    func update(text: String) -> CGSize {
+        let params = Params(text: text)
+        if let currentLayout = self.currentLayout, currentLayout.params == params {
+            return currentLayout.size
+        }
+        let size = self.update(params: params)
+        self.currentLayout = Layout(params: params, size: size)
+        return size
+    }
+    
+    private func update(params: Params) -> CGSize {
+        let spacing: CGFloat = 8.0
+        
+        var iconSize: CGSize = self.iconView.image?.size ?? CGSize(width: 2.0, height: 2.0)
+        let iconScaleFactor: CGFloat = 0.9
+        iconSize.width = floor(iconSize.width * iconScaleFactor)
+        iconSize.height = floor(iconSize.height * iconScaleFactor)
+        
+        let textSize = self.textView.update(string: params.text, fontSize: 17.0, fontWeight: UIFont.Weight.regular.rawValue, color: .white, constrainedWidth: 100.0, transition: .immediate)
+        let size = CGSize(width: iconSize.width + spacing + textSize.width, height: textSize.height)
+        
+        self.iconView.frame = CGRect(origin: CGPoint(x: 0.0, y: floorToScreenPixels((size.height - iconSize.height) * 0.5)), size: iconSize)
+        self.textView.frame = CGRect(origin: CGPoint(x: iconSize.width + spacing, y: floorToScreenPixels((size.height - textSize.height) * 0.5)), size: textSize)
+        
+        return size
+    }
 }
diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/ButtonGroupView.swift b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/ButtonGroupView.swift
index 180fa18dca1..73c36b48cec 100644
--- a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/ButtonGroupView.swift
+++ b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/Components/ButtonGroupView.swift
@@ -3,6 +3,7 @@ import UIKit
 import Display
 import ComponentFlow
 import AppBundle
+import TelegramPresentationData
 
 final class ButtonGroupView: OverlayMaskContainerView {
     final class Button {
@@ -85,7 +86,7 @@ final class ButtonGroupView: OverlayMaskContainerView {
         return result
     }
     
-    func update(size: CGSize, insets: UIEdgeInsets, minWidth: CGFloat, controlsHidden: Bool, displayClose: Bool, buttons: [Button], notices: [Notice], transition: Transition) -> CGFloat {
+    func update(size: CGSize, insets: UIEdgeInsets, minWidth: CGFloat, controlsHidden: Bool, displayClose: Bool, strings: PresentationStrings, buttons: [Button], notices: [Notice], transition: Transition) -> CGFloat {
         self.buttons = buttons
         
         let buttonSize: CGFloat = 56.0
@@ -190,7 +191,7 @@ final class ButtonGroupView: OverlayMaskContainerView {
                 }
             }
             let closeButtonSize = CGSize(width: minWidth, height: buttonSize)
-            closeButtonView.update(text: "Close", size: closeButtonSize, transition: closeButtonTransition)
+            closeButtonView.update(text: strings.Common_Close, size: closeButtonSize, transition: closeButtonTransition)
             closeButtonTransition.setFrame(view: closeButtonView, frame: CGRect(origin: CGPoint(x: floor((size.width - closeButtonSize.width) * 0.5), y: buttonY), size: closeButtonSize))
             
             if animateIn && !transition.animation.isImmediate {
@@ -218,9 +219,9 @@ final class ButtonGroupView: OverlayMaskContainerView {
             case let .speaker(audioOutput):
                 switch audioOutput {
                 case .internalSpeaker, .speaker:
-                    title = "speaker"
+                    title = strings.Call_Speaker
                 default:
-                    title = "audio"
+                    title = strings.Call_Audio
                 }
                 
                 switch audioOutput {
@@ -247,19 +248,19 @@ final class ButtonGroupView: OverlayMaskContainerView {
                     isActive = true
                 }
             case .flipCamera:
-                title = "flip"
+                title = strings.Call_Flip
                 image = UIImage(bundleImageName: "Call/Flip")
                 isActive = false
             case let .video(isActiveValue):
-                title = "video"
+                title = strings.Call_Video
                 image = UIImage(bundleImageName: "Call/Video")
                 isActive = isActiveValue
             case let .microphone(isActiveValue):
-                title = "mute"
+                title = strings.Call_Mute
                 image = UIImage(bundleImageName: "Call/Mute")
                 isActive = isActiveValue
             case .end:
-                title = "end"
+                title = strings.Call_End
                 image = UIImage(bundleImageName: "Call/End")
                 isActive = false
                 isDestructive = true
diff --git a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/PrivateCallScreen.swift b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/PrivateCallScreen.swift
index a53cfd48ad9..b974b71dc7c 100644
--- a/submodules/TelegramUI/Components/Calls/CallScreen/Sources/PrivateCallScreen.swift
+++ b/submodules/TelegramUI/Components/Calls/CallScreen/Sources/PrivateCallScreen.swift
@@ -7,6 +7,7 @@ import MetalEngine
 import ComponentFlow
 import SwiftSignalKit
 import UIKitRuntimeUtils
+import TelegramPresentationData
 
 public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictureControllerDelegate {
     public struct State: Equatable {
@@ -67,6 +68,7 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             case bluetooth
         }
         
+        public var strings: PresentationStrings
         public var lifecycleState: LifecycleState
         public var name: String
         public var shortName: String
@@ -77,8 +79,10 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
         public var localVideo: VideoSource?
         public var remoteVideo: VideoSource?
         public var isRemoteBatteryLow: Bool
+        public var displaySnowEffect: Bool
         
         public init(
+            strings: PresentationStrings,
             lifecycleState: LifecycleState,
             name: String,
             shortName: String,
@@ -88,8 +92,10 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             isRemoteAudioMuted: Bool,
             localVideo: VideoSource?,
             remoteVideo: VideoSource?,
-            isRemoteBatteryLow: Bool
+            isRemoteBatteryLow: Bool,
+            displaySnowEffect: Bool = false
         ) {
+            self.strings = strings
             self.lifecycleState = lifecycleState
             self.name = name
             self.shortName = shortName
@@ -100,9 +106,13 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             self.localVideo = localVideo
             self.remoteVideo = remoteVideo
             self.isRemoteBatteryLow = isRemoteBatteryLow
+            self.displaySnowEffect = displaySnowEffect
         }
         
         public static func ==(lhs: State, rhs: State) -> Bool {
+            if lhs.strings !== rhs.strings {
+                return false
+            }
             if lhs.lifecycleState != rhs.lifecycleState {
                 return false
             }
@@ -133,6 +143,9 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             if lhs.isRemoteBatteryLow != rhs.isRemoteBatteryLow {
                 return false
             }
+            if lhs.displaySnowEffect != rhs.displaySnowEffect {
+                return false
+            }
             return true
         }
     }
@@ -218,6 +231,8 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
     private var pipVideoCallViewController: UIViewController?
     private var pipController: AVPictureInPictureController?
     
+    private var snowEffectView: SnowEffectView?
+    
     public override init(frame: CGRect) {
         self.overlayContentsView = UIView()
         self.overlayContentsView.isUserInteractionEnabled = false
@@ -240,7 +255,7 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
         self.titleView = TextView()
         self.statusView = StatusView()
         
-        self.backButtonView = BackButtonView(text: "Back")
+        self.backButtonView = BackButtonView(frame: CGRect())
         
         self.pipView = PrivateCallPictureInPictureView(frame: CGRect(origin: CGPoint(), size: CGSize()))
         
@@ -740,16 +755,16 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
         var notices: [ButtonGroupView.Notice] = []
         if !isTerminated {
             if params.state.isLocalAudioMuted {
-                notices.append(ButtonGroupView.Notice(id: AnyHashable(0 as Int), icon: "Call/CallToastMicrophone", text: "Your microphone is turned off"))
+                notices.append(ButtonGroupView.Notice(id: AnyHashable(0 as Int), icon: "Call/CallToastMicrophone", text: params.state.strings.Call_YourMicrophoneOff))
             }
             if params.state.isRemoteAudioMuted {
-                notices.append(ButtonGroupView.Notice(id: AnyHashable(1 as Int), icon: "Call/CallToastMicrophone", text: "\(params.state.shortName)'s microphone is turned off"))
+                notices.append(ButtonGroupView.Notice(id: AnyHashable(1 as Int), icon: "Call/CallToastMicrophone", text: params.state.strings.Call_MicrophoneOff(params.state.shortName).string))
             }
             if params.state.remoteVideo != nil && params.state.localVideo == nil {
-                notices.append(ButtonGroupView.Notice(id: AnyHashable(2 as Int), icon: "Call/CallToastCamera", text: "Your camera is turned off"))
+                notices.append(ButtonGroupView.Notice(id: AnyHashable(2 as Int), icon: "Call/CallToastCamera", text: params.state.strings.Call_YourCameraOff))
             }
             if params.state.isRemoteBatteryLow {
-                notices.append(ButtonGroupView.Notice(id: AnyHashable(3 as Int), icon: "Call/CallToastBattery", text: "\(params.state.shortName)'s battery is low"))
+                notices.append(ButtonGroupView.Notice(id: AnyHashable(3 as Int), icon: "Call/CallToastBattery", text: params.state.strings.Call_BatteryLow(params.state.shortName).string))
             }
         }
         
@@ -759,7 +774,7 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
         }*/
         let displayClose = false
         
-        let contentBottomInset = self.buttonGroupView.update(size: params.size, insets: params.insets, minWidth: wideContentWidth, controlsHidden: currentAreControlsHidden, displayClose: displayClose, buttons: buttons, notices: notices, transition: transition)
+        let contentBottomInset = self.buttonGroupView.update(size: params.size, insets: params.insets, minWidth: wideContentWidth, controlsHidden: currentAreControlsHidden, displayClose: displayClose, strings: params.state.strings, buttons: buttons, notices: notices, transition: transition)
         
         var expandedEmojiKeyRect: CGRect?
         if self.isEmojiKeyExpanded {
@@ -777,7 +792,7 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
                     alphaTransition = genericAlphaTransition
                 }
                 
-                emojiExpandedInfoView = EmojiExpandedInfoView(title: "This call is end-to-end encrypted", text: "If the emoji on \(params.state.shortName)'s screen are the same, this call is 100% secure.")
+                emojiExpandedInfoView = EmojiExpandedInfoView(title: params.state.strings.Call_EncryptedAlertTitle, text: params.state.strings.Call_EncryptedAlertText(params.state.shortName).string)
                 self.emojiExpandedInfoView = emojiExpandedInfoView
                 emojiExpandedInfoView.alpha = 0.0
                 Transition.immediate.setScale(view: emojiExpandedInfoView, scale: 0.5)
@@ -824,13 +839,15 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             }
         }
         
+        let backButtonSize = self.backButtonView.update(text: params.state.strings.Common_Back)
+        
         let backButtonY: CGFloat
         if currentAreControlsHidden {
-            backButtonY = -self.backButtonView.size.height - 12.0
+            backButtonY = -backButtonSize.height - 12.0
         } else {
             backButtonY = params.insets.top + 12.0
         }
-        let backButtonFrame = CGRect(origin: CGPoint(x: params.insets.left + 10.0, y: backButtonY), size: self.backButtonView.size)
+        let backButtonFrame = CGRect(origin: CGPoint(x: params.insets.left + 10.0, y: backButtonY), size: backButtonSize)
         transition.setFrame(view: self.backButtonView, frame: backButtonFrame)
         transition.setAlpha(view: self.backButtonView, alpha: currentAreControlsHidden ? 0.0 : 1.0)
         
@@ -914,7 +931,7 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
                         emojiTooltipView = current
                     } else {
                         emojiTooltipTransition = emojiTooltipTransition.withAnimation(.none)
-                        emojiTooltipView = EmojiTooltipView(text: "Encryption key of this call")
+                        emojiTooltipView = EmojiTooltipView(text: params.state.strings.Call_EncryptionKeyTooltip)
                         animateIn = true
                         self.emojiTooltipView = emojiTooltipView
                         self.addSubview(emojiTooltipView)
@@ -1192,15 +1209,15 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
             
             switch terminatedState.reason {
             case .busy:
-                titleString = "Line Busy"
+                titleString = params.state.strings.Call_StatusBusy
             case .declined:
-                titleString = "Call Declined"
+                titleString = params.state.strings.Call_StatusDeclined
             case .failed:
-                titleString = "Call Failed"
+                titleString = params.state.strings.Call_StatusFailed
             case .hangUp:
-                titleString = "Call Ended"
+                titleString = params.state.strings.Call_StatusEnded
             case .missed:
-                titleString = "Call Missed"
+                titleString = params.state.strings.Call_StatusMissed
             }
         default:
             displayAudioLevelBlob = !params.state.isRemoteAudioMuted
@@ -1358,5 +1375,75 @@ public final class PrivateCallScreen: OverlayMaskContainerView, AVPictureInPictu
                 })
             }
         }
+        
+        /*if params.state.displaySnowEffect {
+            let snowEffectView: SnowEffectView
+            if let current = self.snowEffectView {
+                snowEffectView = current
+            } else {
+                snowEffectView = SnowEffectView(frame: CGRect())
+                self.snowEffectView = snowEffectView
+                self.maskContents.addSubview(snowEffectView)
+            }
+            transition.setFrame(view: snowEffectView, frame: CGRect(origin: CGPoint(), size: params.size))
+            snowEffectView.update(size: params.size)
+        } else {
+            if let snowEffectView = self.snowEffectView {
+                self.snowEffectView = nil
+                snowEffectView.removeFromSuperview()
+            }
+        }*/
+    }
+}
+
+final class SnowEffectView: UIView {
+    private let particlesLayer: CAEmitterLayer
+    
+    override init(frame: CGRect) {
+        let particlesLayer = CAEmitterLayer()
+        self.particlesLayer = particlesLayer
+        self.particlesLayer.backgroundColor = nil
+        self.particlesLayer.isOpaque = false
+
+        particlesLayer.emitterShape = .circle
+        particlesLayer.emitterMode = .surface
+        particlesLayer.renderMode = .oldestLast
+
+        let image1 = UIImage(named: "Call/Snow")?.cgImage
+
+        let cell1 = CAEmitterCell()
+        cell1.contents = image1
+        cell1.name = "Snow"
+        cell1.birthRate = 92.0
+        cell1.lifetime = 20.0
+        cell1.velocity = 59.0
+        cell1.velocityRange = -15.0
+        cell1.xAcceleration = 5.0
+        cell1.yAcceleration = 40.0
+        cell1.emissionRange = 90.0 * (.pi / 180.0)
+        cell1.spin = -28.6 * (.pi / 180.0)
+        cell1.spinRange = 57.2 * (.pi / 180.0)
+        cell1.scale = 0.06
+        cell1.scaleRange = 0.3
+        cell1.color = UIColor(red: 255.0/255.0, green: 255.0/255.0, blue: 255.0/255.0, alpha: 1.0).cgColor
+
+        particlesLayer.emitterCells = [cell1]
+        
+        super.init(frame: frame)
+        
+        self.layer.addSublayer(particlesLayer)
+        self.clipsToBounds = true
+        self.backgroundColor = nil
+        self.isOpaque = false
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    func update(size: CGSize) {
+        self.particlesLayer.frame = CGRect(x: 0.0, y: 0.0, width: size.width, height: size.height)
+        self.particlesLayer.emitterSize = CGSize(width: size.width * 3.0, height: size.height * 2.0)
+        self.particlesLayer.emitterPosition = CGPoint(x: size.width * 0.5, y: -325.0)
     }
 }