// ==UserScript==
// @name 知乎重排for印象笔记
// @namespace http://tampermonkey.net/
// @version 1.1.2
// @description 重新排版知乎的问答，专栏或想法，使"印象笔记·剪藏"只保存需要的内容。
// @author twchen
// @match https://www.zhihu.com/question/*/answer/*
// @match https://zhuanlan.zhihu.com/p/*
// @match https://www.zhihu.com/pin/*
// @run-at document-idle
// @inject-into auto
// @grant GM.xmlHttpRequest
// @grant GM_xmlhttpRequest
// @grant GM.getValue
// @grant GM_getValue
// @grant GM.setValue
// @grant GM_setValue
// @connect lens.zhihu.com
// @connect api.zhihu.com
// @supportURL https://github.com/twchen/zhihu-formatter/issues
// ==/UserScript==
/**
* 更新日志
*
* v0.11
* 1. 图片居中
* 2. 保留figcaption
* 3. 增加默认图片质量配置
*
* v0.12
* 1. 新增设置界面
* 2. 支持重排想法
*
* v0.13
* 1. 把重定向链接改为直链
* 2. 解决一些链接在印象笔记客户端无法点击的问题
*
* v0.14
* 1. 兼容Greasemonkey 4 API
* 2. 在右下角新增设置按钮
*
* v1.0
* 1. 用API获得想法里的图片链接
* 2. 根据知乎图床的命名规则获得不同质量的图片的链接
* 3. 保留视频原有样式
* 4. 解决用Firefox保存专栏时公式无法显示的问题
*
* v1.1
* 1. 把公式转为更高分辨率的图片
* 2. 重构代码
*/
// GM 4 API polyfill
if (typeof GM == "undefined") {
this.GM = {};
[
["getValue", GM_getValue],
["setValue", GM_setValue]
].forEach(([newFunc, oldFunc]) => {
GM[newFunc] = (...args) => {
return new Promise((resolve, reject) => {
try {
resolve(oldFunc(...args));
} catch (error) {
reject(error);
}
});
};
});
GM.xmlHttpRequest = GM_xmlhttpRequest;
}
GM.asyncHttpRequest = args => {
return new Promise((resolve, reject) => {
GM.xmlHttpRequest({
...args,
onload: resolve,
onerror: response => {
reject({
message: `Status:${response.status}. StatusText: ${response.statusText}`
});
}
});
});
};
(function() {
"use strict";
function addLinkToNav(onclick) {
const nav = document.querySelector(".AppHeader-Tabs");
const li = nav.querySelector("li").cloneNode(true);
const a = li.querySelector("a");
a.href = "#";
a.text = "重排";
a.onclick = event => {
event.preventDefault();
onclick();
};
nav.appendChild(li);
}
function addBtnToNav() {
const pageHeader = document.querySelector("div.ColumnPageHeader-Button");
const btn = document.createElement("button");
btn.setAttribute("type", "button");
btn.innerText = "重新排版";
btn.classList.add("Button", "Button--blue");
btn.style.marginRight = "1rem";
btn.onclick = formatZhuanlan;
pageHeader.prepend(btn);
}
function formatAnswer() {
root.style.display = "none";
let div = document.querySelector("#formatted");
if (div !== null) {
div.remove();
}
const showMoreBtn = document.querySelector("button.Button.QuestionRichText-more");
if (showMoreBtn !== null) showMoreBtn.click();
const title = document.querySelector("h1.QuestionHeader-title").cloneNode(true);
const detail = document.querySelector("div.QuestionHeader-detail").cloneNode(true);
const question = document.createElement("div");
question.append(title, detail);
Object.assign(question.style, {
backgroundColor: "white",
margin: "0.8rem 0",
padding: "0.2rem 1rem 1rem",
borderRadius: "2px",
boxShadow: "0 1px 3px rgba(26,26,26,.1)"
});
const answer = document.querySelector("div.Card.AnswerCard").cloneNode(true);
// remove non-working actions
const actions = answer.querySelector(".ContentItem-actions");
actions.style.display = "none";
div = document.createElement("div");
div.id = "formatted";
div.append(question, answer);
root.after(div);
window.history.pushState("formatted", "");
postprocess(div);
}
async function formatZhuanlan() {
root.style.display = "none";
let div = document.querySelector("#formatted");
if (div !== null) {
div.remove();
}
const header = document.querySelector("header.Post-Header").cloneNode(true);
const title = header.querySelector(".Post-Title");
Object.assign(title.style, {
fontSize: "1.5rem",
fontWeight: "bold",
marginBottom: "1rem"
});
const post = document.querySelector("div.Post-RichText").cloneNode(true);
const time = document.querySelector("div.ContentItem-time").cloneNode(true);
const topics = document.querySelector("div.Post-topicsAndReviewer").cloneNode(true);
const titleImage = document.querySelector(".TitleImage");
div = document.createElement("div");
div.id = "formatted";
if (titleImage) {
const img = (await getRealImage(titleImage)) || titleImage.cloneNode(true);
div.appendChild(img);
}
div.append(header, post, time, topics);
div.style.padding = "1rem";
div.style.backgroundColor = "white";
root.after(div);
window.history.pushState("formatted", "");
postprocess(div);
}
async function formatPin() {
let div = document.querySelector("#formatted");
if (div !== null) {
div.remove();
}
const pinItem = document.querySelector(".PinItem");
div = pinItem.cloneNode(true);
div.id = "formatted";
div.style.margin = "1rem";
const remainContents = div.querySelectorAll(".PinItem-remainContentRichText");
remainContents.forEach(remainContent => {
// assume either the original pin or the repost pin has non-text content (video/image), not both.
// otherwise the code may not run correctly.
if (remainContent.querySelector(".RichText-video")) {
// show video
replaceVideosByLinks(remainContent);
}
const preview = remainContent.querySelector(".Image-Wrapper-Preview");
if (preview) {
// show all images
replaceThumbnailsByRealImages(preview);
}
});
if (
(await settings.get("keepComments")) === "否" ||
div.querySelector(".CommentListV2") === null ||
div.querySelector(".CommentListV2").children.length === 0
) {
const comments = div.querySelector(".Comments-container");
comments.style.display = "none";
} else {
// hide the comment editor
const commentEditor = div.querySelector(".CommentEditorV2--normal");
commentEditor.style.display = "none";
// get all remaining comments
if ((await settings.get("keepComments")) === "此页后全部") {
const commentsClone = div.querySelector(".CommentListV2");
while (true) {
const comments = await getNextPageComments(root);
if (comments === null) break;
commentsClone.append(...comments.cloneNode(true).children);
}
}
}
root.after(div);
root.style.display = "none";
window.history.pushState("formatted", "");
fixLinks(div);
convertEquations(div);
}
async function replaceThumbnailsByRealImages(preview) {
try {
const groups = /^\/pin\/(\d+)/.exec(window.location.pathname);
const pinId = groups[1];
const response = await GM.asyncHttpRequest({
method: "GET",
url: "https://api.zhihu.com/pins/" + pinId
});
const pinInfo = JSON.parse(response.responseText);
const content = (pinInfo.origin_pin || pinInfo).content;
const images = await Promise.all(
content.filter(item => item.type === "image").map(item => createImgFromURL(item.url))
);
const div = document.createElement("div");
div.append(...images);
preview.replaceWith(div);
} catch (error) {
console.error(`Error getting all images: ${error.message}`);
}
}
function getNextPageComments(root) {
return new Promise((resolve, reject) => {
const nextPage = root.querySelector(".PaginationButton-next");
if (nextPage === null) {
resolve(null);
} else {
nextPage.click();
const startTime = new Date().getTime();
const id = setInterval(() => {
if (new Date().getTime() - startTime > 5000) {
clearInterval(id);
reject(new Error("Timeout"));
return;
}
const comments = root.querySelector(".CommentListV2");
if (comments === null) return;
clearInterval(id);
resolve(comments);
}, 200);
}
});
}
function replaceVideosByLinks(el) {
let videoDivs = el.querySelectorAll(".RichText-video");
if (el.classList.contains("RichText-video")) {
videoDivs = [...videoDivs, el];
}
const newTitle = document.createElement("div");
newTitle.style.margin = "0.5rem auto";
newTitle.innerText = "视频";
videoDivs.forEach(async div => {
try {
const attr = div.attributes["data-za-extra-module"];
const videoId = JSON.parse(attr.value).card.content.video_id;
const href = "https://www.zhihu.com/video/" + videoId;
const response = await GM.asyncHttpRequest({
method: "GET",
url: "https://lens.zhihu.com/api/videos/" + videoId,
headers: {
"Content-Type": "application/json",
Origin: "https://v.vzuu.com",
Referer: "https://v.vzuu.com/video/" + videoId
}
});
const videoInfo = JSON.parse(response.responseText);
const thumbnail = videoInfo.cover_info.thumbnail;
const layout = div.querySelector(".VideoCard-layout");
layout.style.textAlign = "center";
layout.prepend(newTitle.cloneNode(true));
const title = layout.querySelector(".VideoCard-title");
if (title) {
layout.children[0].innerText = "视频：" + title.innerText;
title.parentNode.remove();
}
const video = layout.querySelector(".VideoCard-video");
const a = document.createElement("a");
a.href = href;
a.style.width = "100%";
const img = document.createElement("img");
img.src = thumbnail;
img.style.maxWidth = "100%";
a.appendChild(img);
video.replaceWith(a);
} catch (error) {
console.error(`Error getting video info: ${error.message}`);
}
});
}
function enableGIF(div) {
try {
const src = div.querySelector("img").src;
const img = document.createElement("img");
const i = src.lastIndexOf(".");
img.src = src.slice(0, i + 1) + GIF_EXT;
Object.assign(img.style, {
maxWidth: "100%",
display: "block",
margin: "auto"
});
div.replaceWith(img);
} catch (error) {
console.error(`Error enabling gif: ${error.message}`);
}
}
function getAttrValOfAnyDOM(el, attr) {
const res = el.querySelector(`*[${attr}]`) || el;
return res.getAttribute(attr);
}
function getAttrValFromNoscript(el, attr) {
let noscripts = el.querySelectorAll("noscript");
const re = new RegExp(`${attr}="(.*?)"`);
if (el.tagName === "NOSCRIPT") {
noscripts = [...noscripts, el];
}
for (let i = 0; i < noscripts.length; ++i) {
const nos = noscripts[i];
const content = nos.textContent || nos.innerText || nos.innerHTML;
if (content) {
const groups = re.exec(content);
if (groups) {
return groups[1];
}
}
}
return null;
}
function getAttrVal(el, attr) {
return getAttrValOfAnyDOM(el, attr) || getAttrValFromNoscript(el, attr);
}
async function getRealImage(el) {
const imgSrcAttrs = ["data-original", "data-actualsrc", "data-src", "src"];
let imgSrcs = imgSrcAttrs
.map(attr => getAttrVal(el, attr))
.filter(src => src != null && IMG_SRC_REG_EX.test(src));
return imgSrcs.length > 0 ? await createImgFromURL(imgSrcs[0]) : null;
}
async function createImgFromURL(url) {
const suffix = QUALITY_TO_SUFFIX[await settings.get("imageQuality")];
const image = new ZhihuImage(url, suffix);
const img = document.createElement("img");
img.src = image.next();
img.onclick = () => {
img.src = image.next();
};
img.onmouseover = hint.show;
img.onmouseleave = hint.hide;
Object.assign(img.style, {
maxWidth: "100%",
display: "block",
margin: "1rem auto",
cursor: "pointer"
});
return img;
}
// enable all gifs and load images
function loadAllFigures(el) {
const figures = el.querySelectorAll("figure");
figures.forEach(async figure => {
const gifDiv = figure.querySelector("div.RichText-gifPlaceholder");
if (gifDiv !== null) {
enableGIF(gifDiv);
} else {
const img = await getRealImage(figure);
if (img) {
const el = figure.querySelector("img") || figure.querySelector("noscript");
el ? el.replaceWith(img) : figure.prepend(img);
}
}
});
}
function fixLinks(el) {
el.querySelectorAll("a").forEach(a => {
// fix redirect links
const groups = REDIRECT_LINK_REG_EX.exec(a.href);
if (groups) {
a.href = decodeURIComponent(groups[1]);
}
// fix links with hidden texts
const spans = a.querySelectorAll(
":scope > span.invisible, :scope > span.visible, :scope > span.ellipsis"
);
if (spans.length === a.children.length) {
a.innerHTML =
a.innerText.length > LINK_TEXT_MAX_LEN
? a.innerText.slice(0, LINK_TEXT_MAX_LEN) + "..."
: a.innerText;
}
});
}
// Equations are converted to PNG images by the clipper, but the images have low resolutions
// This function converts equations to PNG images in higher resolutions.
function convertEquations(el) {
const equationImgs = el.querySelectorAll('img[src^="https://www.zhihu.com/equation"]');
equationImgs.forEach(img => {
const canvas = document.createElement("canvas");
canvas.width = EQ_IMG_SCALING_FACTOR * img.width;
canvas.height = EQ_IMG_SCALING_FACTOR * img.height;
const ctx = canvas.getContext("2d");
ctx.fillStyle = "white";
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
Object.assign(img.style, {
width: img.width + "px",
height: img.height + "px"
});
img.src = canvas.toDataURL("image/png");
});
}
function postprocess(el) {
replaceVideosByLinks(el);
loadAllFigures(el);
fixLinks(el);
convertEquations(el);
}
class ZhihuImage {
constructor(src, defaultSuffix) {
const groups = IMG_SRC_REG_EX.exec(src);
this.prefix = groups[1];
this.ext = groups[3];
this.i = SUFFIX.indexOf(defaultSuffix);
if (this.i === -1) this.i = 0;
}
next() {
const src = `${this.prefix}_${SUFFIX[this.i]}.${this.ext}`;
if (++this.i === SUFFIX.length) this.i = 0;
return src;
}
}
class Settings {
constructor() {
this.settings = {};
this.div = null;
const cornerButtons = document.querySelector(".CornerButtons");
if (cornerButtons) {
const div = document.createElement("div");
div.classList.add("CornerAnimayedFlex");
const button = document.createElement("button");
button.classList.add("Button", "CornerButton", "Button--plain");
button.setAttribute("type", "button");
button.setAttribute("data-tooltip", "设置知乎重排");
button.setAttribute("data-tooltip-position", "left");
button.innerHTML = SETTING_ICON_HTML;
button.onclick = this.show.bind(this);
div.appendChild(button);
cornerButtons.prepend(div);
}
}
async get(key) {
return await GM.getValue(key, this.settings[key].defaultOption);
}
async set(key, value) {
return await GM.setValue(key, value);
}
add_setting(key, desc, options, defaultOption) {
this.settings[key] = {
desc,
options,
defaultOption
};
}
async show() {
this.close();
this.div = document.createElement("div");
Object.assign(this.div.style, {
position: "fixed",
top: "50%",
left: "50%",
transform: "translate(-50%, -50%)",
backgroundColor: "white",
border: "1px solid black",
borderRadius: "5px",
padding: "0.8rem",
width: "24rem",
zIndex: 999
});
for (let key in this.settings) {
if (this.div.children.length > 0) {
this.div.appendChild(document.createElement("br"));
}
const { desc, options } = this.settings[key];
const descSpan = document.createElement("span");
descSpan.innerText = `${desc}: `;
this.div.appendChild(descSpan);
// the setting is binary
if (options.length === 2 && options.includes(true) && options.includes(false)) {
const checkbox = document.createElement("input");
checkbox.type = "checkbox";
if (await this.get(key)) {
checkbox.setAttribute("checked", "checked");
}
checkbox.onchange = event => {
this.set(key, event.target.checked);
};
this.div.appendChild(checkbox);
} else {
const savedOption = await this.get(key);
for (let option of options) {
const radio = document.createElement("input");
const id = `${key}-${option}`;
radio.id = id;
radio.type = "radio";
radio.setAttribute("name", key);
radio.setAttribute("value", option);
if (option === savedOption) {
radio.setAttribute("checked", "checked");
}
radio.onchange = () => {
this.set(key, option);
};
this.div.appendChild(radio);
const label = document.createElement("label");
label.setAttribute("for", id);
label.innerText = option;
this.div.appendChild(label);
}
}
}
if (this.div.children.length > 0) {
const closeBtn = document.createElement("span");
closeBtn.innerText = "X";
closeBtn.onclick = this.close.bind(this);
Object.assign(closeBtn.style, {
position: "absolute",
top: "0.5rem",
right: "0.5rem",
cursor: "pointer"
});
this.div.appendChild(closeBtn);
document.body.appendChild(this.div);
}
}
close() {
if (this.div !== null) {
this.div.remove();
this.div = null;
}
}
}
// global constants
const QUALITY_TO_SUFFIX = {
原始: "r",
高清: "hd",
缩略: "b"
};
const EQ_IMG_SCALING_FACTOR = 2; // scaling factor for equation images
const IMG_SRC_REG_EX = /^(https?:\/\/.+[a-z0-9]{32})(_\w+)?\.(\w+)$/;
const REDIRECT_LINK_REG_EX = /https?:\/\/link\.zhihu\.com\/\?target=(.*)/i;
const SUFFIX = ["r", "hd", "b"];
//const SUFFIX = ["r", "hd", "b", "xl", "t", "l", "m", "s"];
const GIF_EXT = "gif"; // can be changed to .webp, but Evernote does not support it.
const LINK_TEXT_MAX_LEN = 50;
const SETTING_ICON_HTML = `<svg t="1567388644978" viewBox="0 0 1024 1024" version="1.1" p-id="1116" width="24" height="24" fill="currentColor">
<defs><style type="text/css"></style></defs>
<path d="M1020.1856 443.045888c-4.01408-21.634048-25.494528-43.657216-47.776768-48.529408l-16.662528-3.702784c-39.144448-11.49952-73.873408-36.640768-95.955968-73.670656-22.081536-37.225472-27.300864-79.517696-17.665024-118.301696l5.219328-15.20128c6.62528-21.049344-2.00704-50.087936-19.472384-64.510976 0 0-15.657984-12.862464-59.82208-37.614592-44.164096-24.556544-63.235072-31.378432-63.235072-31.378432-21.479424-7.600128-51.591168-0.38912-67.249152 15.787008l-11.64288 12.0832c-29.710336 27.285504-69.658624 43.851776-113.82272 43.851776-44.164096 0-84.513792-16.760832-114.224128-44.240896l-11.241472-11.69408C371.177472 49.74592 340.865024 42.534912 319.3856 50.13504c0 0-19.27168 6.821888-63.435776 31.378432-44.164096 24.946688-59.621376 37.810176-59.621376 37.810176-17.46432 14.227456-26.09664 43.071488-19.472384 64.315392l4.81792 15.396864c9.435136 38.784 4.416512 80.88064-17.665024 118.106112-22.08256 37.225472-57.212928 62.56128-96.559104 73.865216l-16.059392 3.508224C29.308928 399.388672 7.6288 421.21728 3.61472 443.045888c0 0-3.613696 19.488768-3.613696 68.992 0 49.504256 3.613696 68.993024 3.613696 68.993024 4.01408 21.828608 25.494528 43.657216 47.776768 48.529408l15.657984 3.508224c39.346176 11.303936 74.677248 36.639744 96.759808 74.059776 22.081536 37.225472 27.300864 79.517696 17.665024 118.301696l-4.617216 15.00672c-6.62528 21.049344 2.00704 50.087936 19.472384 64.510976 0 0 15.657984 12.862464 59.82208 37.614592 44.164096 24.751104 63.235072 31.377408 63.235072 31.377408 21.479424 7.601152 51.591168 0.390144 67.249152-15.785984l11.040768-11.49952c29.91104-27.480064 70.060032-44.240896 114.424832-44.240896 44.3648 0 84.714496 16.956416 114.424832 44.43648l11.040768 11.49952c15.45728 16.175104 45.769728 23.387136 67.249152 15.785984 0 0 19.27168-6.821888 63.435776-31.378432 44.164096-24.751104 59.621376-37.614592 59.621376-37.614592 17.46432-14.227456 26.09664-43.267072 19.472384-64.509952l-4.81792-15.592448c-9.435136-38.58944-4.416512-80.68608 17.665024-117.715968 22.08256-37.225472 57.413632-62.756864 96.759808-74.0608l15.65696-3.508224c22.08256-4.872192 43.762688-26.7008 47.777792-48.528384 0 0 3.613696-19.489792 3.613696-68.993024-0.200704-49.698816-3.8144-69.187584-3.8144-69.187584zM512.100352 710.2464c-112.617472 0-204.157952-88.677376-204.157952-198.208512 0-109.335552 91.339776-198.012928 204.157952-198.012928 112.617472 0 204.157952 88.677376 204.157952 198.208512C716.0576 621.568 624.717824 710.2464 512.100352 710.2464z" p-id="1117"></path>
</svg>`;
// global variables
const root = document.querySelector("#root");
const hint = document.createElement("div");
hint.innerText = "点击图片更换分辨率（如有）";
Object.assign(hint.style, {
display: "none",
position: "fixed",
backgroundColor: "white",
border: "1px solid black"
});
hint.show = event => {
hint.style.display = "block";
hint.style.top = event.clientY + "px";
hint.style.left = event.clientX + 3 + "px";
};
hint.hide = () => {
hint.style.display = "none";
};
let settings;
function main() {
// inject format button/link
const url = window.location.href;
if (url.includes("zhuanlan")) addBtnToNav();
else if (url.includes("answer")) addLinkToNav(formatAnswer);
else addLinkToNav(formatPin);
settings = new Settings();
settings.add_setting("imageQuality", "默认图片质量", ["原始", "高清", "缩略"], "原始");
settings.add_setting(
"keepComments",
"重排想法时保留评论",
["否", "仅此页", "此页后全部"],
"仅此页"
);
// handle backward/forward events
window.addEventListener("popstate", function(event) {
const div = document.querySelector("#formatted");
if (event.state === "formatted") {
root.style.display = "none";
div.style.display = "block";
} else {
root.style.display = "block";
div.style.display = "none";
}
});
document.body.append(hint);
}
setTimeout(main, 1500);
})();
