remove Color dependency

Author: noppefoxwolf

Example.swiftpm/ContentView.swift

@@ -18,7 +18,7 @@ class ContentViewController: UIViewController {
 
         let colorPickerButton = UIButton(primaryAction: UIAction(title: "noppefoxwolf/ColorPicker", handler: { _ in
             let vc = ColorPickerViewController()
-            var configuration = ColorPickerConfiguration.default
+            let configuration = ColorPickerConfiguration.default
             configuration.initialColor = .red
             configuration.initialColorItems = [.init(id: UUID(), color: .red)]
             vc.configuration = configuration

Package.resolved

@@ -15,14 +15,12 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/SnapKit/SnapKit", from: "5.0.1"),
-        .package(url: "https://github.com/yeahdongcn/UIColor-Hex-Swift", from: "5.1.8"),
     ],
     targets: [
         .target(
             name: "ColorPicker",
             dependencies: [
                 "SnapKit",
-                .product(name: "UIColorHexSwift", package: "UIColor-Hex-Swift")
             ]
         ),
         .testTarget(

Package.swift

@@ -0,0 +1,37 @@
+import Foundation
+import UIKit
+
+class ColorFormatter: Formatter {
+    
+    func color(from string: String) -> UIColor? {
+        let hexString = string.trimmingCharacters(in: .whitespacesAndNewlines)
+        let scanner = Scanner(string: hexString)
+        
+        if hexString.hasPrefix("#") {
+            scanner.currentIndex = scanner.string.index(after: scanner.string.startIndex)
+        }
+        
+        var rgbValue:UInt64 = 0
+        scanner.scanHexInt64(&rgbValue)
+        
+        return UIColor(
+            red: Double((rgbValue & 0xFF0000) >> 16) / 255.0,
+            green: Double((rgbValue & 0x00FF00) >> 8) / 255.0,
+            blue: Double(rgbValue & 0x0000FF) / 255.0,
+            alpha: 1.0
+        )
+    }
+    
+    func string(from color: UIColor) -> String {
+        var r: CGFloat = 0
+        var g: CGFloat = 0
+        var b: CGFloat = 0
+        var a: CGFloat = 0
+        
+        color.getRed(&r, green: &g, blue: &b, alpha: &a)
+        
+        let rgb: Int = (Int)(r * 255) << 16 | (Int)(g * 255) << 8 | (Int)(b * 255) << 0
+        
+        return String(format: "%06x", rgb)
+    }
+}

Sources/ColorPicker/Extensions/ColorFormatter.swift

@@ -1,13 +1,12 @@
 import UIKit
-import UIColorHexSwift
 
 class HexInputView: UIControl {
     var color: UIColor {
         get {
-            UIColor(textField.text!)
+            ColorFormatter().color(from: textField.text!) ?? .white
         }
         set {
-            textField.text = newValue.hexString(false)
+            textField.text = ColorFormatter().string(from: newValue)
         }
     }
 
@@ -41,7 +40,7 @@ class HexInputView: UIControl {
         }
 
         textField.addAction(UIAction { [unowned self] _ in
-            self.color = UIColor(textField.text!)
+            self.color = ColorFormatter().color(from: textField.text!) ?? .white
             self.sendActions(for: [.editingDidEnd, .primaryActionTriggered])
         }, for: .editingDidEnd)
     }

Sources/ColorPicker/Feature/SliderColorPicker/HexInputView.swift

@@ -0,0 +1,18 @@
+import XCTest
+@testable import ColorPicker
+
+class ColorFormatterTests: XCTestCase {
+    func testEncodeDecodeWithHash() {
+        let string = "#123456"
+        let color = ColorFormatter().color(from: string)!
+        let string2 = ColorFormatter().string(from: color)
+        XCTAssertEqual(string2, "123456")
+    }
+    
+    func testEncodeDecode() {
+        let string = "123456"
+        let color = ColorFormatter().color(from: string)!
+        let string2 = ColorFormatter().string(from: color)
+        XCTAssertEqual(string2, "123456")
+    }
+}