vue-next-admin/src/utils/theme.ts

import { ElMessage } from 'element-plus'

// hex颜色转rgb颜色
export function hexToRgb(str: any) {
    let hexs: any = ''
    let reg = /^\#?[0-9A-Fa-f]{6}$/
    if (!reg.test(str)) return ElMessage({ type: 'warning', message: "输入错误的hex" })
    str = str.replace("#", "")
    hexs = str.match(/../g)
    for (let i = 0; i < 3; i++) hexs[i] = parseInt(hexs[i], 16)
    return hexs
}

// rgb颜色转Hex颜色
export function rgbToHex(r: any, g: any, b: any) {
    let reg = /^\d{1,3}$/
    if (!reg.test(r) || !reg.test(g) || !reg.test(b)) return ElMessage({ type: 'warning', message: "输入错误的rgb颜色值" })
    let hexs = [r.toString(16), g.toString(16), b.toString(16)]
    for (let i = 0; i < 3; i++) if (hexs[i].length == 1) hexs[i] = `0${hexs[i]}`
    return `#${hexs.join("")}`
}

// 加深颜色值，level为加深的程度，限0-1之间
export function getDarkColor(color: any, level: number) {
    let reg = /^\#?[0-9A-Fa-f]{6}$/
    if (!reg.test(color)) return ElMessage({ type: 'warning', message: "输入错误的hex颜色值" })
    let rgb = hexToRgb(color)
    for (let i = 0; i < 3; i++) rgb[i] = Math.floor(rgb[i] * (1 - level))
    return rgbToHex(rgb[0], rgb[1], rgb[2])
}

// 变浅颜色值，level为加深的程度，限0-1之间
export function getLightColor(color: any, level: number) {
    let reg = /^\#?[0-9A-Fa-f]{6}$/
    if (!reg.test(color)) return ElMessage({ type: 'warning', message: "输入错误的hex颜色值" })
    let rgb = hexToRgb(color)
    for (let i = 0; i < 3; i++) rgb[i] = Math.floor((255 - rgb[i]) * level + rgb[i])
    return rgbToHex(rgb[0], rgb[1], rgb[2])
}