Base64编解码工具，支持位置记忆、夜间模式和拖动功能
// ==UserScript==
// @name Linux.do Base64工具
// @namespace http://tampermonkey.net/
// @version 1.1
// @description Base64编解码工具，支持位置记忆、夜间模式和拖动功能
// @author Xavier
// @match https://linux.do/*
// @grant GM_setClipboard
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
(function() {
'use strict';
// 创建主容器
const container = document.createElement('div');
container.id = 'b64Container';
Object.assign(container.style, {
position: 'fixed',
zIndex: 9999,
borderRadius: '8px',
fontFamily: 'inherit',
cursor: 'move'
});
// 初始化位置
const savedPosition = GM_getValue('b64Position', null);
if (savedPosition) {
// 应用保存的位置时清除默认定位
container.style.left = `${savedPosition.x}px`;
container.style.top = `${savedPosition.y}px`;
container.style.bottom = 'auto';
container.style.right = 'auto';
} else {
// 默认位置时清除可能存在的绝对定位
container.style.bottom = '20px';
container.style.right = '20px';
container.style.left = 'auto';
container.style.top = 'auto';
}
// 主触发器
const trigger = document.createElement('div');
trigger.innerHTML = 'Base64';
Object.assign(trigger.style, {
padding: '8px 16px',
borderRadius: '6px',
fontSize: '14px',
cursor: 'pointer',
transition: 'all 0.2s',
backgroundColor: 'var(--primary)',
color: 'var(--secondary)',
boxShadow: '0 2px 5px rgba(0,0,0,0.2)'
});
// 拖动功能
let isDragging = false;
let offsetX = 0;
let offsetY = 0;
container.addEventListener('mousedown', (e) => {
isDragging = true;
const rect = container.getBoundingClientRect();
offsetX = e.clientX - rect.left;
offsetY = e.clientY - rect.top;
});
document.addEventListener('mousemove', (e) => {
if (isDragging) {
const x = e.clientX - offsetX;
const y = e.clientY - offsetY;
container.style.left = `${x}px`;
container.style.top = `${y}px`;
container.style.right = 'auto';
container.style.bottom = 'auto';
}
});
document.addEventListener('mouseup', () => {
if (isDragging) {
const rect = container.getBoundingClientRect();
GM_setValue('b64Position', {
x: rect.left,
y: rect.top
});
}
isDragging = false;
});
// 下拉菜单容器
const menu = document.createElement('div');
menu.style.cssText = `
position: absolute;
bottom: 100%;
right: 0;
width: 160px;
background: var(--secondary);
border-radius: 6px;
box-shadow: 0 4px 12px rgba(0,0,0,0.15);
margin-bottom: 8px;
opacity: 0;
transform: translateY(10px);
transition: all 0.25s ease;
pointer-events: none;
`;
// 创建菜单项
const createMenuItem = (text) => {
const item = document.createElement('div');
item.textContent = text;
item.style.cssText = `
padding: 10px 16px;
font-size: 13px;
cursor: pointer;
color: var(--primary);
transition: background 0.2s;
text-align: left;
line-height: 1.4;
`;
item.onmouseenter = () => item.style.background = 'rgba(0,0,0,0.08)';
item.onmouseleave = () => item.style.background = '';
return item;
};
const decodeItem = createMenuItem('解析本页base64文本');
const encodeItem = createMenuItem('文本转base64');
menu.append(decodeItem, encodeItem);
container.append(trigger, menu);
// 菜单切换逻辑
const toggleMenu = (show) => {
menu.style.opacity = show ? 1 : 0;
menu.style.transform = show ? 'translateY(0)' : 'translateY(10px)';
menu.style.pointerEvents = show ? 'all' : 'none';
};
// 主题适配
const updateTheme = () => {
const isDark = document.body.getAttribute('data-theme') === 'dark';
trigger.style.backgroundColor = isDark ? 'var(--primary)' : 'var(--secondary)';
trigger.style.color = isDark ? 'var(--secondary)' : 'var(--primary)';
};
// 解码功能
const decodeBase64 = () => {
const base64Regex = /([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?/g;
document.querySelectorAll('div.post, div.cooked').forEach(container => {
const walker = document.createTreeWalker(container, NodeFilter.SHOW_TEXT);
while (walker.nextNode()) {
const node = walker.currentNode;
if (node.textContent.length > 20) {
const decodedContent = node.textContent.replace(base64Regex, match => {
try {
const decoded = decodeURIComponent(escape(atob(match)));
return decoded !== match ?
`<span class="b64-decoded" style="
color: var(--highlight);
cursor: pointer;
transition: all 0.2s;
border-bottom: 1px dotted currentColor;
">${decoded}</span>` :
match;
} catch {
return match;
}
});
if (decodedContent !== node.textContent) {
const wrapper = document.createElement('span');
wrapper.innerHTML = decodedContent;
wrapper.querySelectorAll('.b64-decoded').forEach(span => {
span.onclick = (e) => {
GM_setClipboard(span.textContent);
e.target.style.opacity = '0.5';
setTimeout(() => e.target.style.opacity = '', 500);
};
});
node.replaceWith(wrapper);
}
}
}
});
};
// 编码功能
const encodeBase64 = () => {
const text = prompt('请输入要编码的文本:');
if (text) {
const encoded = btoa(unescape(encodeURIComponent(text)));
GM_setClipboard(encoded);
alert('已复制到剪贴板: ' + encoded);
}
};
// 事件绑定
trigger.addEventListener('click', (e) => {
e.stopPropagation();
toggleMenu(menu.style.opacity === '0');
});
decodeItem.addEventListener('click', () => {
decodeBase64();
toggleMenu(false);
});
encodeItem.addEventListener('click', () => {
encodeBase64();
toggleMenu(false);
});
// 初始化
document.body.appendChild(container);
updateTheme();
// 主题变化监听
new MutationObserver(updateTheme).observe(document.body, {
attributes: true,
attributeFilter: ['data-theme']
});
// 点击外部关闭
document.addEventListener('click', (e) => {
if (!container.contains(e.target)) toggleMenu(false);
});
// 全局样式
const style = document.createElement('style');
style.textContent = `
.b64-decoded:hover {
opacity: 0.8 !important;
}
`;
document.head.appendChild(style);
})();