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🐛 修复颜色解析错误，采用 wcag 标准

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BTMuli
2023-09-04 19:04:18 +08:00
parent 477201bfb3
commit 27bf6bdc41
3 changed files with 37 additions and 35 deletions
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42
src/plugins/Mys/utils/parsePost.ts
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@@ -5,23 +5,9 @@
* @since Beta v0.3.0
*/
/**
* @description 16进制颜色转 RGB
* @since Alpha v0.1.3
* @param {string} hex 16进制颜色
* @returns {{ r: number; g: number; b: number }} RGB颜色
*/
function hexToRgb(hex: string): { r: number; g: number; b: number } {
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
if (result === null) {
throw new Error("无法解析颜色");
}
return {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16),
};
}
// third party
import { score } from "wcag-color";
import * as colorConvert from "color-convert";
/**
* @description 给定两个16进制颜色值，确认两者是否相近
@@ -31,21 +17,13 @@ function hexToRgb(hex: string): { r: number; g: number; b: number } {
* @returns {boolean} 是否相近
*/
function isColorSimilar(colorBg: string, colorFg: string): boolean {
const colorBgRGB = hexToRgb(colorBg);
const colorFgRGB = hexToRgb(colorFg);
const colorBgL = 0.2126 * colorBgRGB.r + 0.7152 * colorBgRGB.g + 0.0722 * colorBgRGB.b;
const colorFgL = 0.2126 * colorFgRGB.r + 0.7152 * colorFgRGB.g + 0.0722 * colorFgRGB.b;
const colorBgLum = colorBgL / 255;
const colorFgLum = colorFgL / 255;
const colorBgLumFinal =
colorBgLum <= 0.03928 ? colorBgLum / 12.92 : Math.pow((colorBgLum + 0.055) / 1.055, 2.4);
const colorFgLumFinal =
colorFgLum <= 0.03928 ? colorFgLum / 12.92 : Math.pow((colorFgLum + 0.055) / 1.055, 2.4);
const contrast =
(Math.max(colorBgLumFinal, colorFgLumFinal) + 0.05) /
(Math.min(colorBgLumFinal, colorFgLumFinal) + 0.05);
// console.log(colorBg, colorFg, contrast);
return contrast > 1.5 && contrast < 4;
let hexBg, hexFg;
if (colorBg.startsWith("#")) hexBg = colorBg;
else hexBg = colorConvert.keyword.hex(colorBg);
if (colorFg.startsWith("#")) hexFg = colorFg;
else hexFg = colorConvert.keyword.hex(colorFg);
const contrast = score(hexFg, hexBg);
return contrast === "Fail";
}
/**