eco-boot-web/src/utils/color.ts

import { ElMessage } from 'element-plus'

/**
 * @description hex颜色转rgb颜色
 * @param {String} str 颜色值字符串
 * @returns {String} 返回处理后的颜色值
 */
export const hexToRgb = (hex: string) => {
  let hexs: any = ''
  const reg = /^\#?[0-9A-Fa-f]{6}$/
  if (!reg.test(hex)) return ElMessage.warning('输入错误的hex')
  hex = hex.replace('#', '')
  hexs = hex.match(/../g)
  for (let i = 0; i < 3; i++) hexs[i] = parseInt(hexs[i], 16)
  return hexs
}

/**
 * @description rgb颜色转Hex颜色
 * @param {*} r 代表红色
 * @param {*} g 代表绿色
 * @param {*} b 代表蓝色
 * @returns {String} 返回处理后的颜色值 类似#ff00ff
 */
export const rgbToHex = (r: any, g: any, b: any) => {
  const reg = /^\d{1,3}$/
  if (!reg.test(r) || !reg.test(g) || !reg.test(b)) return ElMessage.warning('输入错误的rgb颜色值')
  const hex = ((r << 16) | (g << 8) | b).toString(16)
  return '#' + new Array(Math.abs(hex.length - 7)).join('0') + hex
}

/**
 * @description 加深颜色值
 * @param {String} color 颜色值字符串
 * @param {Number} level 加深的程度，限0-1之间
 * @returns {String} 返回处理后的颜色值
 */
export const getDarkColor = (color: string, level: number) => {
  const reg = /^\#?[0-9A-Fa-f]{6}$/
  if (!reg.test(color)) return ElMessage.warning('输入错误的hex颜色值')
  const rgb = hexToRgb(color)
  for (let i = 0; i < 3; i++) rgb[i] = Math.round(20.5 * level + rgb[i] * (1 - level))
  return rgbToHex(rgb[0], rgb[1], rgb[2])
}

/**
 * @description 变浅颜色值
 * @param {String} color 颜色值字符串
 * @param {Number} level 加深的程度，限0-1之间
 * @returns {String} 返回处理后的颜色值
 */
export const getLightColor = (color: string, level: number) => {
  const reg = /^\#?[0-9A-Fa-f]{6}$/
  if (!reg.test(color)) return ElMessage.warning('输入错误的hex颜色值')
  const rgb = hexToRgb(color)
  for (let i = 0; i < 3; i++) rgb[i] = Math.round(255 * level + rgb[i] * (1 - level))
  return rgbToHex(rgb[0], rgb[1], rgb[2])
}