🕵️‍♀️ Color Coddle conformance

Author: benlmyers

Sources/ShinySwiftUI/Extensions/SwiftUI/Color/Color+Codable.swift

@@ -0,0 +1,77 @@
+//
+//  File.swift
+//  
+//
+//  Created by Ben Myers on 2/3/22.
+//
+
+import SwiftUI
+
+#if os(iOS)
+import UIKit
+#elseif os(watchOS)
+import WatchKit
+#elseif os(macOS)
+import AppKit
+#endif
+
+@available(macOS 11.0, *)
+extension Color: Codable {
+  
+  // MARK: - Inheritance
+  
+  enum CodingKeys: String, CodingKey {
+    case red, green, blue
+  }
+  
+  public init(from decoder: Decoder) throws {
+    let container = try decoder.container(keyedBy: CodingKeys.self)
+    let r = try container.decode(Double.self, forKey: .red)
+    let g = try container.decode(Double.self, forKey: .green)
+    let b = try container.decode(Double.self, forKey: .blue)
+    
+    self.init(red: r, green: g, blue: b)
+  }
+  
+  public func encode(to encoder: Encoder) throws {
+    guard let colorComponents = self.colorComponents else {
+      return
+    }
+    
+    var container = encoder.container(keyedBy: CodingKeys.self)
+    
+    try container.encode(colorComponents.red, forKey: .red)
+    try container.encode(colorComponents.green, forKey: .green)
+    try container.encode(colorComponents.blue, forKey: .blue)
+  }
+}
+
+
+@available(macOS 11.0, *)
+fileprivate extension Color {
+#if os(macOS)
+  typealias SystemColor = NSColor
+#else
+  typealias SystemColor = UIColor
+#endif
+  
+  var colorComponents: (red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat)? {
+    var r: CGFloat = 0
+    var g: CGFloat = 0
+    var b: CGFloat = 0
+    var a: CGFloat = 0
+    
+#if os(macOS)
+    SystemColor(self).getRed(&r, green: &g, blue: &b, alpha: &a)
+    // Note that non RGB color will raise an exception, that I don't now how to catch because it is an Objc exception.
+#else
+    guard SystemColor(self).getRed(&r, green: &g, blue: &b, alpha: &a) else {
+      // Pay attention that the color should be convertible into RGB format
+      // Colors using hue, saturation and brightness won't work
+      return nil
+    }
+#endif
+    
+    return (r, g, b, a)
+  }
+}