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调整网页下方背景的透明度、颜色遮罩、模糊度，并支持上传本地图片以及自定义元素背景调整。通过Tampermonkey菜单调整设置。
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// ==UserScript==
// @name 网页背景调整
// @namespace http://tampermonkey.net/
// @version 1.46
// @description 调整网页下方背景的透明度、颜色遮罩、模糊度，并支持上传本地图片以及自定义元素背景调整。通过Tampermonkey菜单调整设置。
// @author Grey333
// @match *://*/*
// @grant GM_setValue
// @grant GM_getValue
// @license MIT
// @grant GM_registerMenuCommand
// ==/UserScript==
(function() {
'use strict';
// 默认设置
const defaultSettings = {
transparency: 1,
blur: 0,
overlayColor: 'transparent',
overlayOpacity: 0,
customSelector: '',
customTransparency: 0, // 背景初始不透明
customBlur: 0
};
// 加载保存的设置
let settings = JSON.parse(GM_getValue('settings', JSON.stringify(defaultSettings)));
let isSelecting = false;
// 创建样式元素
const style = document.createElement('style');
style.id = 'background-adjuster-style';
document.head.appendChild(style);
// 设置初始 CSS 变量，反转透明度逻辑
document.body.style.setProperty('--base-transparency', 1 - settings.transparency);
document.body.style.setProperty('--base-blur', settings.blur === 0 ? 'none' : `blur(${settings.blur}px)`);
document.body.style.setProperty('--overlay-color', settings.overlayColor);
document.body.style.setProperty('--overlay-opacity', settings.overlayOpacity);
document.body.style.setProperty('--custom-transparency', settings.customTransparency);
document.body.style.setProperty('--custom-blur', settings.customBlur === 0 ? 'none' : `blur(${settings.customBlur}px)`);
// 添加默认白色背景层
const bgLayer = document.createElement('div');
bgLayer.id = 'background-layer';
bgLayer.style.cssText = `
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
z-index: -2;
background: #ffffff;
opacity: var(--base-transparency);
filter: var(--base-blur);
`;
document.body.insertBefore(bgLayer, document.body.firstChild);
// 添加颜色遮罩层
const overlayLayer = document.createElement('div');
overlayLayer.id = 'overlay-layer';
overlayLayer.style.cssText = `
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
z-index: -1;
background: var(--overlay-color);
opacity: var(--overlay-opacity);
`;
document.body.insertBefore(overlayLayer, document.body.firstChild.nextSibling);
// 添加优化后的 CSS 样式
style.textContent = `
body {
position: relative;
background: transparent !important;
}
#background-layer {
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
z-index: -2;
background: #ffffff;
opacity: var(--base-transparency);
filter: var(--base-blur);
}
#overlay-layer {
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
z-index: -1;
background: var(--overlay-color);
opacity: var(--overlay-opacity);
}
body > *:not(#background-layer):not(#overlay-layer):not(#bg-adjuster-panel) {
position: relative;
z-index: 0;
}
#bg-adjuster-panel {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background: rgba(255, 255, 255, 0.95);
border: none;
padding: 20px;
border-radius: 15px;
box-shadow: 0 6px 20px rgba(0,0,0,0.15);
z-index: 10000;
display: none;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
width: 280px;
max-height: 80vh;
overflow-y: auto;
}
#bg-adjuster-panel label {
display: flex;
align-items: center;
margin: 15px 0;
font-size: 14px;
color: #333;
}
#bg-adjuster-panel input[type="range"] {
flex: 1;
margin: 0 10px;
height: 10px;
border-radius: 5px;
background: #e0e0e0;
position: relative;
outline: none;
cursor: pointer;
appearance: none;
}
#bg-adjuster-panel input[type="range"]::-webkit-slider-runnable-track {
height: 10px;
border-radius: 5px;
}
#bg-adjuster-panel input[type="range"]::-moz-range-track {
height: 10px;
border-radius: 5px;
}
#bg-adjuster-panel input[type="range"]::-webkit-slider-thumb {
appearance: none;
width: 18px;
height: 18px;
background: linear-gradient(135deg, #4a90e2, #357abd);
border-radius: 50%;
border: 2px solid #fff;
cursor: pointer;
box-shadow: 0 2px 6px rgba(0,0,0,0.2);
margin-top: -4px;
}
#bg-adjuster-panel input[type="range"]::-moz-range-thumb {
width: 18px;
height: 18px;
background: linear-gradient(135deg, #4a90e2, #357abd);
border-radius: 50%;
border: 2px solid #fff;
cursor: pointer;
box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}
#bg-adjuster-panel .percentage {
width: 40px;
text-align: right;
font-size: 12px;
color: #666;
}
#bg-adjuster-panel .color-btn {
width: 24px;
height: 24px;
border-radius: 50%;
border: 2px solid #ddd;
cursor: pointer;
margin-right: 8px;
transition: transform 0.2s, box-shadow 0.2s;
}
#bg-adjuster-panel .color-btn:hover {
transform: scale(1.2);
box-shadow: 0 0 4px rgba(0,0,0,0.3);
}
#bg-adjuster-panel .color-btn:active {
transform: scale(1.1);
box-shadow: 0 0 6px rgba(0,0,0,0.4);
}
#bg-adjuster-panel #none-btn {
background: transparent;
border: 2px dashed #ccc;
}
#bg-adjuster-panel #yellow-btn {
background: #ffff00;
}
#bg-adjuster-panel #green-btn {
background: #00ff00;
}
#bg-adjuster-panel #custom-color {
width: 40px;
height: 40px;
padding: 0;
border: 2px solid #ddd;
border-radius: 8px;
cursor: pointer;
margin-left: auto;
}
#bg-adjuster-panel button {
padding: 6px 12px;
cursor: pointer;
border-radius: 8px;
border: none;
background: #f0f0f0;
font-size: 12px;
transition: background 0.2s;
}
#bg-adjuster-panel button:hover {
background: #e0e0e0;
}
#bg-adjuster-panel #reset-btn {
background: #ff3b30;
color: white;
}
#bg-adjuster-panel #reset-btn:hover {
background: #e6392e;
}
#bg-adjuster-panel #close-btn {
background: #4a90e2;
color: white;
}
#bg-adjuster-panel #close-btn:hover {
background: #357abd;
}
#bg-image-label {
display: block;
margin: 15px 0;
font-size: 14px;
color: #333;
white-space: nowrap;
}
#bg-image-label input[type="file"] {
width: 100%;
font-size: 12px;
margin-top: 5px;
}
#overlay-opacity-section {
display: none;
}
#custom-section {
display: none;
margin-top: 15px;
}
#custom-input {
width: 100%;
padding: 5px;
font-size: 12px;
border: 1px solid #ddd;
border-radius: 4px;
margin-bottom: 10px;
}
#custom-btn {
background: #6a4ae2;
color: white;
}
#custom-btn:hover {
background: #5a3abd;
}
`;
// 创建 UI 面板
const panel = document.createElement('div');
panel.id = 'bg-adjuster-panel';
document.body.appendChild(panel);
// UI 面板内容
panel.innerHTML = `
<h3 style="margin: 0 0 20px 0; font-size: 16px; text-align: center; color: #333;">背景调节器</h3>
<label>透明度: <input type="range" min="0" max="1" step="0.01" id="transparency-slider" value="${settings.transparency}"><span class="percentage">${Math.round(settings.transparency * 100)}%</span></label>
<label>模糊度: <input type="range" min="0" max="20" step="1" id="blur-slider" value="${settings.blur}"><span class="percentage">${Math.round((settings.blur / 20) * 100)}%</span></label>
<div id="color-overlay-section">
<label style="display: flex; align-items: center;">颜色遮罩:
<button class="color-btn" id="none-btn" title="无"></button>
<button class="color-btn" id="yellow-btn" title="黄色"></button>
<button class="color-btn" id="green-btn" title="绿色"></button>
<input type="color" id="custom-color" value="${settings.overlayColor === 'transparent' ? '#ffffff' : settings.overlayColor}" title="自定义颜色">
</label>
</div>
<div id="overlay-opacity-section">
<label id="overlay-opacity-label">遮罩透明度: <input type="range" min="0" max="1" step="0.01" id="overlay-opacity" value="${settings.overlayOpacity}"><span class="percentage">${Math.round(settings.overlayOpacity * 100)}%</span></label>
</div>
<label id="bg-image-label">背景图片:<input type="file" id="bg-image-input" accept="image/*"></label>
<button id="custom-btn" style="width: 100%; margin-top: 15px;">自定义</button>
<div id="custom-section">
<input type="text" id="custom-input" value="${settings.customSelector}" placeholder="输入或选择CSS选择器">
<label>自定义透明度: <input type="range" min="0" max="1" step="0.01" id="custom-transparency-slider" value="${settings.customTransparency}"><span class="percentage">${Math.round(settings.customTransparency * 100)}%</span></label>
<label>自定义模糊度: <input type="range" min="0" max="20" step="1" id="custom-blur-slider" value="${settings.customBlur}"><span class="percentage">${Math.round((settings.customBlur / 20) * 100)}%</span></label>
</div>
<button id="reset-btn" style="width: 100%; margin-top: 15px;">重置</button>
<button id="close-btn" style="width: 100%; margin-top: 10px;">关闭</button>
`;
// 获取 UI 元素
const transparencySlider = document.getElementById('transparency-slider');
const blurSlider = document.getElementById('blur-slider');
const noneBtn = document.getElementById('none-btn');
const yellowBtn = document.getElementById('yellow-btn');
const greenBtn = document.getElementById('green-btn');
const customColor = document.getElementById('custom-color');
const overlayOpacity = document.getElementById('overlay-opacity');
const overlayOpacityLabel = document.getElementById('overlay-opacity-label');
const overlayOpacitySection = document.getElementById('overlay-opacity-section');
const bgImageInput = document.getElementById('bg-image-input');
const customBtn = document.getElementById('custom-btn');
const customSection = document.getElementById('custom-section');
const customInput = document.getElementById('custom-input');
const customTransparencySlider = document.getElementById('custom-transparency-slider');
const customBlurSlider = document.getElementById('custom-blur-slider');
const resetBtn = document.getElementById('reset-btn');
const closeBtn = document.getElementById('close-btn');
const backgroundLayer = document.getElementById('background-layer');
const overlayLayerElement = document.getElementById('overlay-layer');
const transparencyPercentage = transparencySlider.nextElementSibling;
const blurPercentage = blurSlider.nextElementSibling;
const overlayOpacityPercentage = overlayOpacity.nextElementSibling;
const customTransparencyPercentage = customTransparencySlider.nextElementSibling;
const customBlurPercentage = customBlurSlider.nextElementSibling;
// 更新设置和 CSS 变量的函数
function updateSettings() {
settings.transparency = parseFloat(transparencySlider.value);
settings.blur = parseInt(blurSlider.value);
settings.overlayColor = customColor.value === '#ffffff' && overlayOpacity.value == 0 ? 'transparent' : customColor.value;
settings.overlayOpacity = parseFloat(overlayOpacity.value);
settings.customSelector = customInput.value;
settings.customTransparency = parseFloat(customTransparencySlider.value);
settings.customBlur = parseInt(customBlurSlider.value);
document.body.style.setProperty('--base-transparency', 1 - settings.transparency);
document.body.style.setProperty('--base-blur', settings.blur === 0 ? 'none' : `blur(${settings.blur}px)`);
document.body.style.setProperty('--overlay-color', settings.overlayColor);
document.body.style.setProperty('--overlay-opacity', settings.overlayOpacity);
document.body.style.setProperty('--custom-transparency', settings.customTransparency);
document.body.style.setProperty('--custom-blur', settings.customBlur === 0 ? 'none' : `blur(${settings.customBlur}px)`);
GM_setValue('settings', JSON.stringify(settings));
transparencyPercentage.textContent = `${Math.round(settings.transparency * 100)}%`;
blurPercentage.textContent = `${Math.round((settings.blur / 20) * 100)}%`;
overlayOpacityPercentage.textContent = `${Math.round(settings.overlayOpacity * 100)}%`;
customTransparencyPercentage.textContent = `${Math.round(settings.customTransparency * 100)}%`;
customBlurPercentage.textContent = `${Math.round((settings.customBlur / 20) * 100)}%`;
transparencySlider.style.background = `linear-gradient(to right, #4a90e2 ${settings.transparency * 100}%, #e0e0e0 ${settings.transparency * 100}%)`;
blurSlider.style.background = `linear-gradient(to right, #4a90e2 ${(settings.blur / 20) * 100}%, #e0e0e0 ${(settings.blur / 20) * 100}%)`;
overlayOpacity.style.background = `linear-gradient(to right, #4a90e2 ${settings.overlayOpacity * 100}%, #e0e0e0 ${settings.overlayOpacity * 100}%)`;
customTransparencySlider.style.background = `linear-gradient(to right, #4a90e2 ${settings.customTransparency * 100}%, #e0e0e0 ${settings.customTransparency * 100}%)`;
customBlurSlider.style.background = `linear-gradient(to right, #4a90e2 ${(settings.customBlur / 20) * 100}%, #e0e0e0 ${(settings.customBlur / 20) * 100}%)`;
// 显示或隐藏遮罩透明度滑块
overlayOpacitySection.style.display = settings.overlayColor === 'transparent' ? 'none' : 'block';
// 应用自定义选择器的背景样式
if (settings.customSelector) {
try {
const elements = document.querySelectorAll(settings.customSelector);
console.log(`Matched elements for "${settings.customSelector}":`, elements.length);
elements.forEach((el, index) => {
console.log(`Element ${index}:`, el);
// 获取原始背景
let originalBg = window.getComputedStyle(el).background;
if (!originalBg || originalBg === 'rgba(0, 0, 0, 0)' || originalBg === 'transparent') {
originalBg = window.getComputedStyle(el).backgroundColor;
}
if (!originalBg || originalBg === 'rgba(0, 0, 0, 0)') {
console.log(`Element ${index} has no direct background, checking parent...`);
let parent = el.parentElement;
while (parent && (!originalBg || originalBg === 'rgba(0, 0, 0, 0)' || originalBg === 'transparent')) {
originalBg = window.getComputedStyle(parent).backgroundColor;
parent = parent.parentElement;
}
if (!originalBg || originalBg === 'rgba(0, 0, 0, 0)') {
originalBg = 'rgba(255, 255, 255, 1)'; // 默认白色
}
}
console.log(`Original background for element ${index}:`, originalBg);
// 处理背景颜色转换为 rgba
let rgbaMatch = originalBg.match(/rgba?\((\d+),\s*(\d+),\s*(\d+)(?:,\s*([\d.]+))?\)/i);
let bgStyle = originalBg;
if (rgbaMatch) {
const r = rgbaMatch[1];
const g = rgbaMatch[2];
const b = rgbaMatch[3];
const a = settings.customTransparency; // 透明度从 0（不透明）到 1（透明）
bgStyle = `rgba(${r}, ${g}, ${b}, ${1 - a})`;
} else if (originalBg.includes('url')) {
// 对于图片背景，添加透明度层
bgStyle = `${originalBg}, rgba(0, 0, 0, ${1 - settings.customTransparency})`;
} else {
bgStyle = `rgba(255, 255, 255, ${1 - settings.customTransparency})`; // 其他情况默认白色
}
// 应用背景样式
el.style.background = bgStyle;
el.style.backdropFilter = settings.customBlur === 0 ? 'none' : `blur(${settings.customBlur}px)`;
el.style.webkitBackdropFilter = settings.customBlur === 0 ? 'none' : `blur(${settings.customBlur}px)`;
// 记录原始样式
if (!el.dataset.originalBackground) {
el.dataset.originalBackground = originalBg;
}
if (!el.dataset.originalBackdropFilter) {
el.dataset.originalBackdropFilter = window.getComputedStyle(el).backdropFilter || 'none';
}
});
} catch (e) {
console.error('Invalid CSS selector:', settings.customSelector, e);
}
}
}
// 为进度条添加事件监听
transparencySlider.addEventListener('input', updateSettings);
blurSlider.addEventListener('input', updateSettings);
overlayOpacity.addEventListener('input', updateSettings);
customColor.addEventListener('change', updateSettings);
customTransparencySlider.addEventListener('input', updateSettings);
customBlurSlider.addEventListener('input', updateSettings);
customInput.addEventListener('change', updateSettings);
// 为颜色按钮添加事件监听
noneBtn.addEventListener('click', () => {
customColor.value = '#ffffff';
overlayOpacity.value = 0;
updateSettings();
});
yellowBtn.addEventListener('click', () => {
customColor.value = '#ffff00';
if (settings.overlayOpacity === 0) overlayOpacity.value = 0.5;
updateSettings();
});
greenBtn.addEventListener('click', () => {
customColor.value = '#00ff00';
if (settings.overlayOpacity === 0) overlayOpacity.value = 0.5;
updateSettings();
});
// 处理背景图片上传
bgImageInput.addEventListener('change', function() {
const file = this.files[0];
if (file) {
const reader = new FileReader();
reader.onload = function(e) {
backgroundLayer.style.backgroundImage = `url(${e.target.result})`;
backgroundLayer.style.backgroundSize = 'cover';
backgroundLayer.style.backgroundRepeat = 'no-repeat';
backgroundLayer.style.backgroundColor = 'transparent';
};
reader.readAsDataURL(file);
}
});
// 自定义按钮功能
customBtn.addEventListener('click', () => {
customSection.style.display = customSection.style.display === 'block' ? 'none' : 'block';
if (customSection.style.display === 'block') {
isSelecting = true;
document.body.style.cursor = 'crosshair';
document.addEventListener('click', handleElementSelection);
} else {
isSelecting = false;
document.body.style.cursor = 'default';
document.removeEventListener('click', handleElementSelection);
}
});
// 处理元素选择
function handleElementSelection(e) {
e.preventDefault();
e.stopPropagation();
const target = e.target;
if (panel.contains(target)) return;
const selector = generateSelector(target);
customInput.value = selector;
settings.customSelector = selector;
updateSettings();
isSelecting = false;
document.body.style.cursor = 'default';
document.removeEventListener('click', handleElementSelection);
}
// 生成 CSS 选择器
function generateSelector(element) {
if (element.id) return `#${element.id}`;
if (element === document.body) return 'body';
let path = [];
let current = element;
while (current && current !== document.body) {
let selector = current.tagName.toLowerCase();
if (current.className) {
selector += '.' + current.className.trim().split(/\s+/).join('.');
}
path.unshift(selector);
current = current.parentElement;
}
return path.join(' > ');
}
// 重置按钮功能
resetBtn.addEventListener('click', () => {
settings = Object.assign({}, defaultSettings);
transparencySlider.value = settings.transparency;
blurSlider.value = settings.blur;
customColor.value = '#ffffff';
overlayOpacity.value = 0;
customInput.value = '';
customTransparencySlider.value = settings.customTransparency;
customBlurSlider.value = settings.customBlur;
document.body.style.setProperty('--base-transparency', 1 - settings.transparency);
document.body.style.setProperty('--base-blur', 'none');
document.body.style.setProperty('--overlay-color', 'transparent');
document.body.style.setProperty('--overlay-opacity', 0);
document.body.style.setProperty('--custom-transparency', settings.customTransparency);
document.body.style.setProperty('--custom-blur', 'none');
backgroundLayer.style.backgroundImage = 'none';
backgroundLayer.style.backgroundColor = '#ffffff';
customSection.style.display = 'none';
isSelecting = false;
document.body.style.cursor = 'default';
document.removeEventListener('click', handleElementSelection);
// 恢复元素的原始背景样式
if (settings.customSelector) {
try {
const elements = document.querySelectorAll(settings.customSelector);
elements.forEach(el => {
el.style.background = el.dataset.originalBackground || '';
el.style.backdropFilter = el.dataset.originalBackdropFilter || 'none';
el.style.webkitBackdropFilter = el.dataset.originalBackdropFilter || 'none';
delete el.dataset.originalBackground;
delete el.dataset.originalBackdropFilter;
});
} catch (e) {
console.error('Error resetting elements:', e);
}
}
GM_setValue('settings', JSON.stringify(settings));
transparencyPercentage.textContent = `${Math.round(settings.transparency * 100)}%`;
blurPercentage.textContent = `${Math.round((settings.blur / 20) * 100)}%`;
overlayOpacityPercentage.textContent = `${Math.round(settings.overlayOpacity * 100)}%`;
customTransparencyPercentage.textContent = `${Math.round(settings.customTransparency * 100)}%`;
customBlurPercentage.textContent = `${Math.round((settings.customBlur / 20) * 100)}%`;
updateSettings();
});
// 关闭面板
closeBtn.addEventListener('click', () => {
panel.style.display = 'none';
document.body.style.cursor = 'default';
document.removeEventListener('click', handleElementSelection);
customSection.style.display = 'none';
isSelecting = false;
});
// 点击面板外关闭（在非选择模式下）
document.addEventListener('click', (e) => {
if (!isSelecting && !panel.contains(e.target) && panel.style.display === 'block') {
panel.style.display = 'none';
document.body.style.cursor = 'default';
document.removeEventListener('click', handleElementSelection);
customSection.style.display = 'none';
}
});
// 防止面板内部点击冒泡到外部关闭
panel.addEventListener('click', (e) => {
e.stopPropagation();
});
// Tampermonkey 菜单选项
GM_registerMenuCommand('打开背景调节器', () => {
panel.style.display = 'block';
});
// 初始化设置
updateSettings();
})();