Fix issue that textColor of AnimateableLabel refers incorrect userInterfaceStyle (#601)

* Fix issue that referring to dynamic color with incorrect trait collection

* modify logic for visibility

Author: Gyuni

Sources/Tabman/Bar/Extensions/UIColor+Interpolation.swift

@@ -17,27 +17,57 @@ internal extension UIColor {
     static func interpolate(betweenColor colorA: UIColor,
                             and colorB: UIColor,
                             percent: CGFloat) -> UIColor? {
-        var redA: CGFloat = 0.0
-        var greenA: CGFloat = 0.0
-        var blueA: CGFloat = 0.0
-        var alphaA: CGFloat = 0.0
-        guard colorA.getRed(&redA, green: &greenA, blue: &blueA, alpha: &alphaA) else {
-            return nil
+        if #available(iOS 13, *) {
+            return UIColor(dynamicProvider: { traitCollection in
+                var redA: CGFloat = 0.0
+                var greenA: CGFloat = 0.0
+                var blueA: CGFloat = 0.0
+                var alphaA: CGFloat = 0.0
+                
+                var redB: CGFloat = 0.0
+                var greenB: CGFloat = 0.0
+                var blueB: CGFloat = 0.0
+                var alphaB: CGFloat = 0.0
+                
+                traitCollection.performAsCurrent {
+                    guard colorA.getRed(&redA, green: &greenA, blue: &blueA, alpha: &alphaA) else {
+                        return
+                    }
+                    guard colorB.getRed(&redB, green: &greenB, blue: &blueB, alpha: &alphaB) else {
+                        return
+                    }
+                }
+                
+                let iRed = CGFloat(redA + percent * (redB - redA))
+                let iBlue = CGFloat(blueA + percent * (blueB - blueA))
+                let iGreen = CGFloat(greenA + percent * (greenB - greenA))
+                let iAlpha = CGFloat(alphaA + percent * (alphaB - alphaA))
+                
+                return UIColor(red: iRed, green: iGreen, blue: iBlue, alpha: iAlpha)
+            })
+        } else {
+            var redA: CGFloat = 0.0
+            var greenA: CGFloat = 0.0
+            var blueA: CGFloat = 0.0
+            var alphaA: CGFloat = 0.0
+            guard colorA.getRed(&redA, green: &greenA, blue: &blueA, alpha: &alphaA) else {
+                return nil
+            }
+            
+            var redB: CGFloat = 0.0
+            var greenB: CGFloat = 0.0
+            var blueB: CGFloat = 0.0
+            var alphaB: CGFloat = 0.0
+            guard colorB.getRed(&redB, green: &greenB, blue: &blueB, alpha: &alphaB) else {
+                return nil
+            }
+            
+            let iRed = CGFloat(redA + percent * (redB - redA))
+            let iBlue = CGFloat(blueA + percent * (blueB - blueA))
+            let iGreen = CGFloat(greenA + percent * (greenB - greenA))
+            let iAlpha = CGFloat(alphaA + percent * (alphaB - alphaA))
+            
+            return UIColor(red: iRed, green: iGreen, blue: iBlue, alpha: iAlpha)
         }
-        
-        var redB: CGFloat = 0.0
-        var greenB: CGFloat = 0.0
-        var blueB: CGFloat = 0.0
-        var alphaB: CGFloat = 0.0
-        guard colorB.getRed(&redB, green: &greenB, blue: &blueB, alpha: &alphaB) else {
-            return nil
-        }
-        
-        let iRed = CGFloat(redA + percent * (redB - redA))
-        let iBlue = CGFloat(blueA + percent * (blueB - blueA))
-        let iGreen = CGFloat(greenA + percent * (greenB - greenA))
-        let iAlpha = CGFloat(alphaA + percent * (alphaB - alphaA))
-        
-        return UIColor(red: iRed, green: iGreen, blue: iBlue, alpha: iAlpha)
     }
 }

Sources/Tabman/Bar/Generic/AnimateableLabel.swift

@@ -34,7 +34,11 @@ internal class AnimateableLabel: UIView {
         }
         set {
             let textColor = newValue ?? .black
-            textLayer.foregroundColor = textColor.cgColor
+            if #available(iOS 13, *) {
+                textLayer.foregroundColor = textColor.resolvedColor(with: traitCollection).cgColor
+            } else {
+                textLayer.foregroundColor = textColor.cgColor
+            }
         }
     }
     var font: UIFont? {