该脚本为 Discord 网页版中的图片添加“保存原图”和“复制链接”按钮，以便用户更方便地下载和分享图片。
// ==UserScript==
// @name Discord 图片助手
// @namespace http://tampermonkey.net/
// @version 1.0
// @description 该脚本为 Discord 网页版中的图片添加“保存原图”和“复制链接”按钮，以便用户更方便地下载和分享图片。
// @author Your Name
// @match https://discord.com/*
// @grant GM_download
// @grant GM_setClipboard
// @run-at document-idle
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const PROCESSED_TARGET_MARKER = 'data-image-enhancer-target-processed';
const BUTTON_CONTAINER_CLASS = 'custom-image-buttons-container';
const imageParentSelectors = [
'div[class*="visualMediaItemContainer_"]',
'div[class*="imageContent-"]',
'div[class*="imageContainer-"]',
'div[class*="imageWrapper-"]',
'div[class*="clickableWrapper-"]',
'div[class*="embedMedia-"]',
'div[class*="attachmentContentContainer-"]',
'div[class*="mediaMosaicSrc-"]',
'div[class*="mediaAttachmentsContainer-"]',
'div[class*="messageAttachment-"]',
'figure[class*="imageContainer-"]'
];
function getImageUrl(element) {
if (element.tagName === 'IMG' && element.src) {
return element.src;
}
if (element.tagName === 'A' && element.href) {
const imgElement = element.querySelector('img');
if (imgElement && imgElement.src && (imgElement.src.includes('discordapp.com') || imgElement.src.includes('discordapp.net'))) {
return imgElement.src;
}
if (element.href.match(/\.(jpeg|jpg|gif|png|webp|avif)(#.*)?$/i) || element.href.includes('discordapp.com') || element.href.includes('discordapp.net')) {
return element.href;
}
}
if (element.style && element.style.backgroundImage) {
const bgImage = element.style.backgroundImage;
const match = bgImage.match(/url\("?([^"]+)"?\)/);
if (match && match[1]) {
return match[1];
}
}
const childImg = element.querySelector('img[src*="cdn.discordapp.com"], img[src*="media.discordapp.net"]');
if (childImg && childImg.src) {
return childImg.src;
}
return null;
}
function getShareableCdnUrl(url) {
if (!url || typeof url !== 'string') {
return null;
}
try {
const originalUrl = new URL(url);
const cdnHostname = 'cdn.discordapp.com';
let finalPathname = originalUrl.pathname;
if (!finalPathname.startsWith('/')) {
finalPathname = '/' + finalPathname;
}
let newUrlString = `https://${cdnHostname}${finalPathname}`;
const paramsToKeep = ['ex', 'is', 'hm'];
const newSearchParams = new URLSearchParams();
let paramsKept = false;
originalUrl.searchParams.forEach((value, key) => {
if (paramsToKeep.includes(key.toLowerCase())) {
if (value) {
newSearchParams.append(key, value);
paramsKept = true;
}
}
});
if (paramsKept) {
newUrlString += '?' + newSearchParams.toString();
}
return newUrlString;
} catch (e) {
console.warn('[DEBUG] getShareableCdnUrl: Failed to parse or process URL:', url, e);
return url;
}
}
function addButtonsToImageWrapper(imageElementWrapper, detectedImageUrl) {
if (!imageElementWrapper || !imageElementWrapper.parentNode) {
console.error('[DEBUG] addButtonsToImageWrapper: Target wrapper or its parent is invalid.');
return;
}
const shareableCdnUrl = getShareableCdnUrl(detectedImageUrl);
if (!shareableCdnUrl) {
console.warn('[DEBUG] addButtonsToImageWrapper: Could not derive a shareable CDN URL from:', detectedImageUrl);
return;
}
let existingButtonContainer = imageElementWrapper.nextElementSibling;
if (existingButtonContainer && existingButtonContainer.classList.contains(BUTTON_CONTAINER_CLASS) && existingButtonContainer.dataset.imageUrl === shareableCdnUrl) {
if (!imageElementWrapper.hasAttribute(PROCESSED_TARGET_MARKER)) {
imageElementWrapper.setAttribute(PROCESSED_TARGET_MARKER, 'true');
}
return;
}
if (existingButtonContainer && existingButtonContainer.classList.contains(BUTTON_CONTAINER_CLASS)) {
existingButtonContainer.remove();
}
let buttonContainer = document.createElement('div');
buttonContainer.className = BUTTON_CONTAINER_CLASS;
buttonContainer.setAttribute('data-image-url', shareableCdnUrl);
const downloadBtn = document.createElement('button');
downloadBtn.innerHTML = '保存原图';
downloadBtn.className = 'custom-image-button custom-download-button';
downloadBtn.onclick = async (e) => {
e.stopPropagation(); e.preventDefault();
downloadBtn.disabled = true;
downloadBtn.innerHTML = '保存中...';
const response = await fetch(shareableCdnUrl);
const blob = await response.blob();
const objectUrl = URL.createObjectURL(blob);
GM_download(objectUrl, "discord_image.png");
setTimeout(() => {
downloadBtn.innerHTML = '已保存!';
downloadBtn.disabled = false;
}, 2000);
};
const copyLinkBtn = document.createElement('button');
copyLinkBtn.innerHTML = '复制链接';
copyLinkBtn.className = 'custom-image-button custom-copy-link-button';
copyLinkBtn.onclick = (e) => {
e.stopPropagation(); e.preventDefault();
copyLinkBtn.disabled = true;
copyLinkBtn.innerHTML = '已复制!';
GM_setClipboard(shareableCdnUrl);
setTimeout(() => {
copyLinkBtn.innerHTML = '复制链接';
copyLinkBtn.disabled = false;
}, 2000);
};
buttonContainer.appendChild(downloadBtn);
buttonContainer.appendChild(copyLinkBtn);
imageElementWrapper.parentNode.insertBefore(buttonContainer, imageElementWrapper.nextSibling);
imageElementWrapper.setAttribute(PROCESSED_TARGET_MARKER, 'true');
}
function scanForImages() {
const potentialWrappers = document.querySelectorAll(imageParentSelectors.join(', '));
potentialWrappers.forEach((potentialWrapper) => {
let elementForUrlExtraction =
potentialWrapper.querySelector('img[src*="discordapp.com"], img[src*="discordapp.net"]') ||
potentialWrapper.querySelector('a[href*="discordapp.com"], a[href*="discordapp.net"]') ||
potentialWrapper;
const currentDetectedUrlInDom = getImageUrl(elementForUrlExtraction);
if (currentDetectedUrlInDom) {
addButtonsToImageWrapper(potentialWrapper, currentDetectedUrlInDom);
}
});
}
const observer = new MutationObserver((mutationsList) => {
let shouldScan = false;
for (const mutation of mutationsList) {
if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
for (const node of mutation.addedNodes) {
if (node.nodeType === Node.ELEMENT_NODE) {
shouldScan = true;
break;
}
}
}
}
if (shouldScan) {
scanForImages();
}
});
function startObserver() {
scanForImages();
observer.observe(document.body, {
childList: true,
subtree: true
});
}
// 添加样式
const style = document.createElement('style');
style.innerHTML = `
/* 自定义按钮容器 */
.custom-image-buttons-container {
display: flex;
flex-direction: row;
gap: 8px;
background-color: #202225;
padding: 6px 8px;
border-radius: 5px;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
pointer-events: auto;
margin-top: 8px;
margin-bottom: 8px;
justify-self: center;
}
/* 通用按钮样式 */
.custom-image-button {
color: #FFFFFF;
border: 1px solid rgba(0,0,0,0.2);
padding: 8px 12px;
border-radius: 4px;
cursor: pointer;
font-family: "gg sans", "Noto Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 13px;
font-weight: 600;
transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease, border-color 0.15s ease;
display: flex;
align-items: center;
justify-content: center;
min-width: 90px;
box-sizing: border-box;
text-align: center;
line-height: 1.2;
}
/* 按钮禁用状态 */
.custom-image-button:disabled {
background-color: #9e9e9e;
cursor: not-allowed;
color: #b0b0b0;
}
/* 悬停效果 */
.custom-image-button:hover:not(:disabled) {
transform: translateY(-1px);
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
/* 按钮点击时效果 */
.custom-image-button:active:not(:disabled) {
transform: translateY(0px);
box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}
/* 保存原图按钮 - 绿色 */
.custom-download-button {
background-color: #72b572;
border-color: #5f985f;
}
.custom-download-button:hover {
background-color: #65a565;
border-color: #508750;
color: #FFFFFF;
}
.custom-download-button:active {
background-color: #589558;
}
/* 复制链接按钮 - 紫色 */
.custom-copy-link-button {
background-color: #9b84d7;
border-color: #836fc0;
}
.custom-copy-link-button:hover {
background-color: #8c73c6;
border-color: #725ea9;
color: #FFFFFF;
}
.custom-copy-link-button:active {
background-color: #7d63b5;
}
`;
document.head.appendChild(style);
startObserver();
})();