Temp

submodules/TelegramUI/Sources/ChatMessageLiveLocationTextNode.swift

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+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+import TelegramPresentationData
+import TelegramUIPreferences
+import TelegramStringFormatting
+
+private let textFont: UIFont = Font.regular(14.0)
+
+private class ChatMessageLiveLocationTextNodeParams: NSObject {
+    let color: UIColor
+    let string: String
+    
+    init(color: UIColor, string: String) {
+        self.color = color
+        self.string = string
+        
+        super.init()
+    }
+}
+
+private final class RadialTimeoutNodeTimer: NSObject {
+    let action: () -> Void
+    init(_ action: @escaping () -> Void) {
+        self.action = action
+        
+        super.init()
+    }
+    
+    @objc func event() {
+        self.action()
+    }
+}
+
+final class ChatMessageLiveLocationTextNode: ASDisplayNode {
+    private var timeoutAndColors: (UIColor, Double, PresentationStrings, PresentationDateTimeFormat)?
+    private var updateTimer: Timer?
+    
+    override init() {
+        super.init()
+        
+        self.isOpaque = false
+    }
+    
+    deinit {
+        self.updateTimer?.invalidate()
+    }
+    
+    public func update(color: UIColor, timestamp: Double, strings: PresentationStrings, dateTimeFormat: PresentationDateTimeFormat) {
+        if self.timeoutAndColors?.1 != timestamp {
+            self.updateTimer?.invalidate()
+            self.timeoutAndColors = (color, timestamp, strings, dateTimeFormat)
+            
+            let updateTimer = Timer(timeInterval: 30.0, target: RadialTimeoutNodeTimer({ [weak self] in
+                self?.setNeedsDisplay()
+            }), selector: #selector(RadialTimeoutNodeTimer.event), userInfo: nil, repeats: true)
+            self.updateTimer = updateTimer
+            RunLoop.main.add(updateTimer, forMode: .common)
+        }
+    }
+    
+    public override func drawParameters(forAsyncLayer layer: _ASDisplayLayer) -> NSObjectProtocol? {
+        if let (color, updateTimestamp, strings, dateTimeFormat) = self.timeoutAndColors {
+            let timestamp = CFAbsoluteTimeGetCurrent() + NSTimeIntervalSince1970
+            
+            let string = stringForRelativeLiveLocationTimestamp(strings: strings, relativeTimestamp: Int32(updateTimestamp), relativeTo: Int32(timestamp), dateTimeFormat: dateTimeFormat)
+            
+            return ChatMessageLiveLocationTextNodeParams(color: color, string: string)
+        } else {
+            return nil
+        }
+    }
+    
+    @objc override public class func draw(_ bounds: CGRect, withParameters parameters: Any?, isCancelled: () -> Bool, isRasterizing: Bool) {
+        let context = UIGraphicsGetCurrentContext()!
+        
+        if !isRasterizing {
+            context.setBlendMode(.copy)
+            context.setFillColor(UIColor.clear.cgColor)
+            context.fill(bounds)
+        }
+        
+        if let parameters = parameters as? ChatMessageLiveLocationTextNodeParams {
+            let attributes: [NSAttributedString.Key: Any] = [.font: textFont, .foregroundColor: parameters.color]
+            let nsString = parameters.string as NSString
+            nsString.draw(at: CGPoint(x: 0.0, y: 0.0), withAttributes: attributes)
+        }
+    }
+}