CutBox.app

//

//  NSColor+HexColorString.swift

//  CutBox

//

//  Created by Jason on 30/5/22.

//  Copyright © 2023 ocodo. All rights reserved.

//

import Foundation

import AppKit.NSColor

extension String {

    var color: NSColor? {

        guard let color = NSColor(hex: self) else {

            return nil

        }

        return color

    }

}

extension NSColor {

    convenience init?(hex: String) {

        var hexSanitized = hex.trimmingCharacters(in: .whitespacesAndNewlines)

        hexSanitized = hexSanitized.replacingOccurrences(of: "#", with: "")

        var rgb: UInt64 = 0

        var red: CGFloat = 0.0

        var green: CGFloat = 0.0

        var blue: CGFloat = 0.0

        var alpha: CGFloat = 1.0

        let length = hexSanitized.count

        guard Scanner(string: hexSanitized).scanHexInt64(&rgb) else {

            return nil

        }

        if length == 6 {

            red = CGFloat((rgb & 0xFF0000) >> 16) / 255.0

            green = CGFloat((rgb & 0x00FF00) >> 8) / 255.0

            blue = CGFloat(rgb & 0x0000FF) / 255.0

        } else if length == 8 {

            red = CGFloat((rgb & 0xFF000000) >> 24) / 255.0

            green = CGFloat((rgb & 0x00FF0000) >> 16) / 255.0

            blue = CGFloat((rgb & 0x0000FF00) >> 8) / 255.0

            alpha = CGFloat(rgb & 0x000000FF) / 255.0

        }

        self.init(red: red, green: green, blue: blue, alpha: alpha)

    }

    var toHex: String? {

        return toHex()

    }

    var toHexAlpha: String? {

        return toHex(alpha: true)

    }

    func toHex(alpha hasAlpha: Bool = false) -> String? {

        guard let components = cgColor.components, components.count >= 3 else {

            return nil

        }

        let red = Float(components[0])

        let green = Float(components[1])

        let blue = Float(components[2])

        var alpha = Float(1.0)

        if components.count >= 4 {

            alpha = Float(components[3])

        }

        if hasAlpha {

            return String(format: "%02lX%02lX%02lX%02lX",

                          lroundf(red * 255), lroundf(green * 255), lroundf(blue * 255), lroundf(alpha * 255))

        } else {

            return String(format: "%02lX%02lX%02lX",

                          lroundf(red * 255), lroundf(green * 255), lroundf(blue * 255))

        }

    }

}