KittensTravelNotes/PodCode/Ex/SwiftUI/Color+Ex.swift

//
//  Color+Ex.swift
//  TSLiveWallpaper
//
//  Created by 100Years on 2025/1/14.
//

import SwiftUI

public extension Color {
    public static func hex(_ hex: String) -> Color {
        let hex = hex.trimmingCharacters(in: CharacterSet.alphanumerics.inverted)
        var int: UInt64 = 0
        Scanner(string: hex).scanHexInt64(&int)

        let a, r, g, b: UInt64
        switch hex.count {
        case 3: // RGB (12-bit)
            (a, r, g, b) = (255, (int >> 8) * 17, (int >> 4 & 0xF) * 17, (int & 0xF) * 17)
        case 6: // RGB (24-bit)
            (a, r, g, b) = (255, int >> 16, int >> 8 & 0xFF, int & 0xFF)
        case 8: // ARGB (32-bit)
            (a, r, g, b) = (int >> 24, int >> 16 & 0xFF, int >> 8 & 0xFF, int & 0xFF)
        default:
            (a, r, g, b) = (255, 0, 0, 0)
        }

        return Self(
            .sRGB,
            red: Double(r) / 255,
            green: Double(g) / 255,
            blue: Double(b) / 255,
            opacity: Double(a) / 255
        )
    }

    // 随机生成一个颜色
    public static var randomColor: Color {
        // 随机生成 R, G, B 和 alpha（透明度）值
        let red = Double.random(in: 0 ... 1)
        let green = Double.random(in: 0 ... 1)
        let blue = Double.random(in: 0 ... 1)
        let alpha = Double.random(in: 0.5 ... 1) // 可选，透明度的范围

        return Color(red: red, green: green, blue: blue, opacity: alpha)
    }
}