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TGFC论坛贴内 Markdown 美化，优化阅读边距，调整标题配色，保持紧凑排版，仅针对楼层内容
// ==UserScript==
// @name TGFC Markdown Enhancer
// @namespace http://tampermonkey.net/
// @version 1.2
// @description TGFC论坛贴内 Markdown 美化，优化阅读边距，调整标题配色，保持紧凑排版，仅针对楼层内容
// @author heiren + ChatGPT
// @match https://s.tgfcer.com/*
// @match https://tgfcer.com/*
// @icon https://s.tgfcer.com/favicon.ico
// @grant GM_setValue
// @grant GM_getValue
// @license MIT
// ==/UserScript==
(function () {
'use strict';
class TGMarkdownEnhancer {
constructor() {
this.isEnabled = GM_getValue ? GM_getValue('tgmd_enabled', false) : false;
// 限制仅在楼层正文生效，防止误伤签名档
this.selectors = [
'div.postmessage.defaultpost'
];
this.originalHtmlMap = new Map();
this.processedNodes = new WeakSet();
this.observer = null;
this.modeBtn = null;
this.init();
}
init() {
this.injectStyles();
this.createButton();
this.bindEvents();
if (this.isEnabled) {
this.startEnhancement();
}
}
bindEvents() {
// 快捷键: Ctrl/Meta + Alt + V
window.addEventListener('keydown', (e) => {
const tag = (e.target && e.target.tagName) ? e.target.tagName.toLowerCase() : '';
const ignore = ['input', 'textarea', 'select'].includes(tag) || e.target.isContentEditable;
if (ignore) return;
if ((e.metaKey || e.ctrlKey) && e.altKey && e.key.toLowerCase() === 'v') {
this.toggleState();
}
});
// 复制代码按钮点击事件
document.body.addEventListener('click', (e) => {
const btn = e.target.closest('.tgfc-md-copy');
if (btn) {
this.handleCopy(btn);
}
});
}
toggleState() {
this.isEnabled = !this.isEnabled;
if (GM_setValue) GM_setValue('tgmd_enabled', this.isEnabled);
this.updateBtnUI();
if (this.isEnabled) {
this.startEnhancement();
this.showNotification('TGMD: 已开启');
} else {
this.stopEnhancement();
this.showNotification('TGMD: 已关闭');
}
}
startEnhancement() {
this.processExistingNodes();
this.startObserver();
}
stopEnhancement() {
this.stopObserver();
this.restoreOriginalContent();
}
startObserver() {
if (this.observer) return;
this.observer = new MutationObserver((mutations) => {
let shouldProcess = false;
for (const mutation of mutations) {
if (mutation.addedNodes.length > 0) {
shouldProcess = true;
break;
}
}
if (shouldProcess) {
this.processExistingNodes();
}
});
this.observer.observe(document.body, { childList: true, subtree: true });
}
stopObserver() {
if (this.observer) {
this.observer.disconnect();
this.observer = null;
}
}
collectTargets() {
let nodes = [];
for (let sel of this.selectors) {
let found = document.querySelectorAll(sel);
if (found.length > 0) {
nodes = nodes.concat(Array.from(found));
}
}
return [...new Set(nodes)];
}
processExistingNodes() {
const targets = this.collectTargets();
targets.forEach(node => {
if (this.processedNodes.has(node)) return;
if (!this.originalHtmlMap.has(node)) {
this.originalHtmlMap.set(node, node.innerHTML);
}
this.enhanceNode(node);
});
}
restoreOriginalContent() {
const targets = this.collectTargets();
targets.forEach(node => {
if (this.originalHtmlMap.has(node)) {
node.innerHTML = this.originalHtmlMap.get(node);
this.processedNodes.delete(node);
}
});
}
enhanceNode(node) {
let postInfo = node.querySelector('.postinfo');
let contentHtml = '', contentText = '';
// 提取内容时排除 postinfo
if (postInfo) {
let clone = node.cloneNode(true);
let piInClone = clone.querySelector('.postinfo');
if (piInClone) piInClone.remove();
contentHtml = clone.innerHTML;
contentText = clone.innerText || clone.textContent;
} else {
contentHtml = node.innerHTML;
contentText = node.innerText || node.textContent;
}
if (this.shouldEnhance(contentHtml, contentText)) {
let raw = this.cleanRawText(contentText);
let newContentHtml = this.markdownToHtml(raw);
node.innerHTML = '';
if (postInfo) node.appendChild(postInfo);
node.insertAdjacentHTML('beforeend', newContentHtml);
this.processedNodes.add(node);
}
}
shouldEnhance(html, text) {
// 避免重复渲染或破坏已有格式
if (/<blockquote|div class="quote"|div class="t_msgfont"|table/i.test(html)) {
if (/quote/i.test(html)) return false;
}
const hasCodeBlock = /```[\s\S]*?```/.test(text);
const hasHeader = /^#{1,6}\s+/m.test(text);
return hasCodeBlock || hasHeader;
}
cleanRawText(text) {
if (!text) return '';
text = text.replace(/\(adsbygoogle\s*=\s*window\.adsbygoogle\s*\|\|\s*\[\]\)\.push\(\{\}\);/g, '');
return text.trim();
}
markdownToHtml(md) {
if (!md) return '';
md = this.cleanRawText(md);
// 1. 代码块
md = md.replace(/```(\w*)\n([\s\S]*?)```/g, (match, lang, code) => {
let langAttr = lang ? `data-lang="${lang}"` : '';
return `<pre class="tgfc-md-code" ${langAttr}><code>${this.escapeHtml(code.trim())}</code><button class="tgfc-md-copy">复制</button></pre>`;
});
// 2. 行内代码
md = md.replace(/`([^`]+)`/g, '<code class="tgfc-inline">$1</code>');
// 3. 标题
const headers = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6'];
headers.forEach((tag, i) => {
const level = i + 1;
const regex = new RegExp(`^#{${level}}\\s+(.+)$`, 'gm');
md = md.replace(regex, `<${tag}>$1</${tag}>`);
});
// 4. 水平线
md = md.replace(/^---$/gm, '<hr class="tgfc-md-hr">');
// 5. 图片
md = md.replace(/!\[([^\]]*)\]\(([^)]+)\)/g, '<img src="$2" alt="$1" class="tgfc-md-img">');
// 6. 链接
md = md.replace(/\[([^\]]+)\]\(([^)]+)\)/g, '<a href="$2" target="_blank" rel="noopener">$1</a>');
// 7. 样式 (粗体、斜体、引用)
md = md.replace(/\*\*([^*]+)\*\*/g, '<span class="tgfc-md-bold">$1</span>');
md = md.replace(/\*([^*]+)\*/g, '<span class="tgfc-md-italic">$1</span>');
md = md.replace(/^> ?(.+)$/gm, '<blockquote>$1</blockquote>');
// 8. 列表项
md = md.replace(/^\s*\d+\.\s+(.+)$/gm, '<li class="tgfc-md-li" style="list-style:decimal;">$1</li>');
md = md.replace(/^\s*[-*+] +(.+)$/gm, '<li class="tgfc-md-li">$1</li>');
// 9. 换行
md = md.replace(/(?<!>)\n/g, '<br>');
// 10. 列表包裹
md = md.replace(/(<li class="tgfc-md-li" style="list-style:decimal;">[\s\S]*?<\/li>)+/gm, '<ol class="tgfc-md-ol">$&</ol>');
md = md.replace(/(<li class="tgfc-md-li">[\s\S]*?<\/li>)+/gm, '<ul class="tgfc-md-ul">$&</ul>');
return `<div class="tgfc-md-content">${md}</div>`;
}
escapeHtml(str) {
return str.replace(/[&<>"]/g, (tag) => {
const charsToReplace = {
'&': '&',
'<': '<',
'>': '>',
'"': '"'
};
return charsToReplace[tag] || tag;
});
}
handleCopy(btn) {
let codeEl = btn.previousElementSibling;
if (codeEl) {
let txt = codeEl.textContent;
navigator.clipboard.writeText(txt).then(() => {
const originalText = btn.innerText;
btn.innerText = '已复制!';
setTimeout(() => btn.innerText = originalText, 1200);
});
}
}
createButton() {
this.modeBtn = document.createElement('button');
this.modeBtn.style.cssText = `
position: fixed;
top: 20px;
left: 22px;
z-index: 10001;
padding: 6px 12px;
border-radius: 6px;
color: white;
border: none;
font-size: 12px;
line-height: 1.2;
box-shadow: 0 2px 5px rgba(0,0,0,0.2);
cursor: pointer;
opacity: 0.8;
transition: all 0.2s;
font-family: system-ui, -apple-system, sans-serif;
`;
this.modeBtn.title = "点击切换：开启 / 关闭";
this.modeBtn.addEventListener('mouseenter', () => this.modeBtn.style.opacity = '1');
this.modeBtn.addEventListener('mouseleave', () => this.modeBtn.style.opacity = '0.8');
this.modeBtn.onclick = () => this.toggleState();
this.updateBtnUI();
document.body.appendChild(this.modeBtn);
}
updateBtnUI() {
if (this.isEnabled) {
this.modeBtn.innerText = 'TGMD: ON';
this.modeBtn.style.background = '#2879ff';
} else {
this.modeBtn.innerText = 'TGMD: OFF';
this.modeBtn.style.background = '#718096';
}
}
showNotification(msg) {
let notif = document.createElement('div');
notif.innerText = msg;
notif.style.cssText = `
position: fixed;
top: 38px;
right: 36px;
background: rgba(0,0,0,0.8);
color: #fff;
padding: 8px 16px;
border-radius: 6px;
z-index: 9999;
font-size: 13px;
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
animation: fadeIn 0.2s;
backdrop-filter: blur(4px);
`;
document.body.appendChild(notif);
setTimeout(() => notif.remove(), 1500);
}
injectStyles() {
const style = `
/* --- 基础容器 --- */
.tgfc-md-content {
font-size: 15px !important;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
color: #24292e;
background: #ffffff !important;
border-radius: 8px;
padding: 15px 20px;
margin: 12px auto;
max-width: 96%;
line-height: 1.45;
border: 1px solid #e1e4e8;
box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
/* --- 标题通用设置 --- */
.tgfc-md-content h1, .tgfc-md-content h2, .tgfc-md-content h3,
.tgfc-md-content h4, .tgfc-md-content h5, .tgfc-md-content h6 {
font-family: inherit;
font-weight: 700;
margin-top: 10px;
margin-bottom: 6px;
line-height: 1.3;
padding: 5px 10px;
border-radius: 4px;
border-left-style: solid;
color: #24292e;
}
/* H1: 中宝蓝 */
.tgfc-md-content h1 {
background: #2b6cb0;
color: #ffffff;
border-left-width: 6px;
border-left-color: #1a365d;
font-size: 1.3em;
border-bottom: none;
}
/* H2: 亮蓝 */
.tgfc-md-content h2 {
background: #4299e1;
color: #ffffff;
border-left-width: 5px;
border-left-color: #2b6cb0;
font-size: 1.4em;
border-bottom: none;
}
/* H3: 浅蓝背景 + 深蓝字 */
.tgfc-md-content h3 {
background: #ebf8ff;
color: #2b6cb0;
border-left-width: 4px;
border-left-color: #4299e1;
font-size: 1.3em;
}
/* H4: 极淡绿背景 */
.tgfc-md-content h4 {
background: #f0fff4;
color: #2f855a;
border-left-width: 4px;
border-left-color: #48bb78;
font-size: 1.2em;
}
/* H5: 浅灰 */
.tgfc-md-content h5 {
background: #f7fafc;
color: #4a5568;
border-left-width: 3px;
border-left-color: #cbd5e0;
font-size: 1.1em;
}
/* H6 */
.tgfc-md-content h6 {
background: #fff;
border: 1px solid #eee;
border-left-width: 3px;
border-left-color: #e2e8f0;
font-size: 1.0em;
color: #718096;
}
/* --- 内容元素 --- */
.tgfc-md-content p { margin-bottom: 4px; }
.tgfc-md-content blockquote {
border-left: 4px solid #dfe2e5;
margin: 0 0 6px 0;
padding: 0 1em;
color: #6a737d;
}
.tgfc-md-content ul, .tgfc-md-content ol {
padding-left: 2em;
margin-bottom: 6px;
}
.tgfc-md-content li { margin-bottom: 4px; }
.tgfc-md-content hr.tgfc-md-hr {
height: 0.25em;
padding: 0;
margin: 24px 0;
background-color: #e1e4e8;
border: 0;
}
.tgfc-md-content img.tgfc-md-img {
max-width: 100%;
box-sizing: content-box;
background-color: #fff;
border-radius: 4px;
box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
/* --- 代码块 --- */
.tgfc-md-code {
position: relative;
background: #f6f8fa;
border-radius: 6px;
font-size: 85%;
line-height: 1.45;
padding: 16px;
margin-bottom: 16px;
overflow: auto;
font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}
.tgfc-md-code .tgfc-md-copy {
position: absolute;
top: 8px;
right: 8px;
font-size: 12px;
background: rgba(255,255,255,0.8);
color: #24292e;
border: 1px solid rgba(27,31,35,0.15);
border-radius: 4px;
padding: 3px 8px;
cursor: pointer;
transition: all 0.2s;
opacity: 0;
}
.tgfc-md-code:hover .tgfc-md-copy { opacity: 1; }
.tgfc-md-code .tgfc-md-copy:hover { background: #fff; }
.tgfc-inline {
padding: 0.2em 0.4em;
margin: 0;
font-size: 85%;
background-color: rgba(27,31,35,0.05);
border-radius: 3px;
font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}
/* --- 链接与强调 --- */
.tgfc-md-content a { color: #0366d6; text-decoration: none; }
.tgfc-md-content a:hover { text-decoration: underline; }
.tgfc-md-bold { font-weight: 600; }
.tgfc-md-italic { font-style: italic; }
/* 动画 */
@keyframes fadeIn {
from { opacity: 0; transform: translateY(-10px); }
to { opacity: 1; transform: translateY(0); }
}
`;
let styleEl = document.createElement('style');
styleEl.innerText = style;
document.head.appendChild(styleEl);
}
}
// Initialize
new TGMarkdownEnhancer();
})();