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在Mermaid代码块旁添加渲染按钮，点击后打开新窗口（由 DeepSeek 深度思考编写）
// ==UserScript==
// @name DeepSeek Chat 页面 Mermaid 渲染增强
// @namespace http://tampermonkey.net/
// @version 0.1
// @description 在Mermaid代码块旁添加渲染按钮，点击后打开新窗口（由 DeepSeek 深度思考编写）
// @author DeepSeek-R1 & Conglinyizhi
// @match https://chat.deepseek.com/*
// @grant none
// @require https://cdn.jsdelivr.net/npm/mermaid@9/dist/mermaid.min.js
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// 配置mermaid
mermaid.initialize({
startOnLoad: false,
theme: 'default',
securityLevel: 'loose'
});
// 创建渲染窗口样式
const style = document.createElement('style');
style.textContent = `
.mermaid-render-window {
padding: 20px;
background: white;
border-radius: 8px;
box-shadow: 0 0 10px rgba(0,0,0,0.2);
overflow: auto;
}
`;
document.head.appendChild(style);
// 添加渲染按钮的函数
function addRenderButton(codeBlock) {
const copyBtn = codeBlock.querySelector('.ds-markdown-code-copy-button');
if (!copyBtn || copyBtn.nextElementSibling?.classList.contains('render-btn')) return;
const renderBtn = document.createElement('div');
renderBtn.className = 'ds-markdown-code-copy-button render-btn';
renderBtn.textContent = '渲染';
renderBtn.style.marginLeft = '8px';
renderBtn.style.cursor = 'pointer';
renderBtn.addEventListener('click', async () => {
const code = codeBlock.querySelector('pre').innerText;
const cleanedCode = code.replace(/</g, '<').replace(/>/g, '>');
const renderWindow = window.open('', '_blank', 'width=800,height=600');
renderWindow.document.write(`
<html>
<head>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/mermaid@9/dist/mermaid.min.css">
<style>
:root {
--bg-color: #ffffff;
--text-color: #000000;
}
@media (prefers-color-scheme: dark) {
:root {
--bg-color: rgb(102, 102, 102);
--text-color: #ffffff;
}
}
body {
margin: 0;
background: var(--bg-color);
color: var(--text-color);
transition: background 0.3s, color 0.3s;
}
.container {
padding: 20px;
min-height: 100vh;
}
.render-status {
position: fixed;
top: 20px;
left: 50%;
transform: translateX(-50%);
padding: 8px 16px;
background: rgba(0,0,0,1);
color: white;
border-radius: 4px;
font-family: sans-serif;
z-index: 1000;
}
</style>
</head>
<body>
<div class="render-status">🔄 正在渲染图表...</div>
<div class="container v-cloak">
<div class="mermaid">${cleanedCode}</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/mermaid@9/dist/mermaid.min.js"><\/script>
<script>
// 主题适配
function updateTheme() {
const isDark = window.matchMedia('(prefers-color-scheme: dark)').matches;
document.body.style.backgroundColor = isDark ? '#6666666' : '#ffffff';
document.body.style.color = isDark ? '#ffffff' : '#000000';
}
// 监听系统主题变化
window.matchMedia('(prefers-color-scheme: dark)')
.addEventListener('change', updateTheme);
// 初始化主题
updateTheme();
// 初始化Mermaid
mermaid.initialize({
theme: 'default',
securityLevel: 'loose',
darkMode: window.matchMedia('(prefers-color-scheme: dark)').matches
});
// 执行渲染并移除提示
mermaid.init(undefined, document.querySelectorAll('.mermaid'))
.then(() => {
document.querySelector('.render-status').remove();
// 删除 v-cloak 属性
document.querySelectorAll('.v-cloak').forEach(el => el.removeAttribute('v-cloak'));
});
<\/script>
</body>
</html>
`);
});
copyBtn.parentNode.insertBefore(renderBtn, copyBtn.nextSibling);
}
// 使用MutationObserver监听动态加载
const observer = new MutationObserver(mutations => {
mutations.forEach(mutation => {
if (mutation.addedNodes.length) {
document.querySelectorAll('.md-code-block').forEach(block => {
if (block.querySelector('.md-code-block-infostring')?.textContent === 'mermaid') {
addRenderButton(block);
}
});
}
});
});
// 启动观察
observer.observe(document.body, {
childList: true,
subtree: true
});
// 初始处理已有元素
document.querySelectorAll('.md-code-block').forEach(block => {
if (block.querySelector('.md-code-block-infostring')?.textContent === 'mermaid') {
addRenderButton(block);
}
});
})();