// ==UserScript==
// @name futaba-image-preview
// @namespace http://2chan.net/
// @version 0.6.2
// @description ふたばちゃんねるのスレッド上で「あぷ」「あぷ小」の画像をプレビュー表示する
// @author ame-chan
// @match http://*.2chan.net/b/res/*
// @match https://*.2chan.net/b/res/*
// @match http://kako.futakuro.com/futa/*
// @match https://kako.futakuro.com/futa/*
// @match https://tsumanne.net/si/data/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=2chan.net
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// @license MIT
// @run-at document-idle
// @connect 2chan.net
// @connect img.2chan.net
// @connect dec.2chan.net
// @require https://cdn.jsdelivr.net/npm/exifreader@4.20.0/dist/exif-reader.min.js
// ==/UserScript==
(async () => {
'use strict';
const resNumberStorage = {};
let initExecCreateLink = false;
let initTimer;
const addedStyle = `<style id="userjs-preview-style">
.zoom_button.not_copy_button {
display: none;
}
.userjs-preview-link {
padding-right: 24px;
background-image: url('data:image/svg+xml;charset=utf8,%3Csvg%20width%3D%2216%22%20height%3D%2216%22%20viewBox%3D%220%200%2038%2038%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20stroke%3D%22%23000%22%3E%3Cg%20fill%3D%22none%22%20fill-rule%3D%22evenodd%22%3E%3Cg%20transform%3D%22translate(1%201)%22%20stroke-width%3D%222%22%3E%3Ccircle%20stroke-opacity%3D%22.5%22%20cx%3D%2218%22%20cy%3D%2218%22%20r%3D%2218%22%2F%3E%3Cpath%20d%3D%22M36%2018c0-9.94-8.06-18-18-18%22%3E%20%3CanimateTransform%20attributeName%3D%22transform%22%20type%3D%22rotate%22%20from%3D%220%2018%2018%22%20to%3D%22360%2018%2018%22%20dur%3D%221s%22%20repeatCount%3D%22indefinite%22%2F%3E%3C%2Fpath%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E');
background-repeat: no-repeat;
background-position: right center;
}
.userjs-preview-imageWrap {
max-width: calc(100vw - 200px);
width: fit-content;
}
.userjs-preview-inner {
position: relative;
width: fit-content;
}
.userjs-preview-inner.is-caution::after {
position: absolute;
top: 0;
left: 0;
content: "";
display: block;
width: 100%;
height: 100%;
backdrop-filter: blur(40px);
border-radius: 4px;
}
.userjs-preview-image {
max-width: calc(100vw - 200px) !important;
max-height: none !important;
transition: all 0.2s ease-in-out;
border-radius: 4px;
cursor: pointer;
}
.userjs-preview-close {
position: absolute;
top: -12px;
right: -12px;
width: 24px;
height: 24px;
line-height: 1;
color: #fff;
background-color: hsl(347.94deg 100% 60.98%);
border: none;
border-radius: 50%;
cursor: pointer;
z-index: 10;
}
.userjs-preview-close:hover {
background-color: hsl(347.94deg 100% 75.98%);
}
.userjs-preview-close::before {
position: absolute;
top: 50%;
left: 50%;
content: "";
display: block;
width: 16px;
height: 16px;
background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" height="16" width="12" viewBox="0 0 384 512"><path fill="%23FFFFFF" d="M342.6 150.6c12.5-12.5 12.5-32.8 0-45.3s-32.8-12.5-45.3 0L192 210.7 86.6 105.4c-12.5-12.5-32.8-12.5-45.3 0s-12.5 32.8 0 45.3L146.7 256 41.4 361.4c-12.5 12.5-12.5 32.8 0 45.3s32.8 12.5 45.3 0L192 301.3 297.4 406.6c12.5 12.5 32.8 12.5 45.3 0s12.5-32.8 0-45.3L237.3 256 342.6 150.6z"/></svg>');
background-repeat: no-repeat;
background-size: 16px 16px;
transform: translate3d(-50%, -50%, 0);
}
.userjs-preview-title {
display: flex;
flex-direction: row;
margin: 8px 0 16px;
gap: 16px;
padding: 16px;
line-height: 1.6 !important;
color: #ff3860 !important;
background-color: #fff;
border-radius: 4px;
}
.userjs-prompt {
color: #888;
border-left: 4px solid #888;
padding: 0 0 0 16px;
}
.fat-settings button + p {
margin-top: 16px;
}
</style>`;
const settingsStyle = `<style id="fat-style">
.fat-icon {
position: fixed;
right: 16px;
bottom: 16px;
padding: 8px;
width: 24px;
height: 24px;
z-index: 9999;
background-color: #fff;
border-radius: 50%;
box-shadow: 0 2px 10px rgb(0 0 0 / 30%);
cursor: pointer;
}
.fat-icon::before {
display: block;
width: 24px;
height: 24px;
content: "";
background-image: url("data:image/svg+xml,%3C%3Fxml version='1.0'%3F%3E%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50' width='100px' height='100px'%3E%3Cpath d='M47.16,21.221l-5.91-0.966c-0.346-1.186-0.819-2.326-1.411-3.405l3.45-4.917c0.279-0.397,0.231-0.938-0.112-1.282 l-3.889-3.887c-0.347-0.346-0.893-0.391-1.291-0.104l-4.843,3.481c-1.089-0.602-2.239-1.08-3.432-1.427l-1.031-5.886 C28.607,2.35,28.192,2,27.706,2h-5.5c-0.49,0-0.908,0.355-0.987,0.839l-0.956,5.854c-1.2,0.345-2.352,0.818-3.437,1.412l-4.83-3.45 c-0.399-0.285-0.942-0.239-1.289,0.106L6.82,10.648c-0.343,0.343-0.391,0.883-0.112,1.28l3.399,4.863 c-0.605,1.095-1.087,2.254-1.438,3.46l-5.831,0.971c-0.482,0.08-0.836,0.498-0.836,0.986v5.5c0,0.485,0.348,0.9,0.825,0.985 l5.831,1.034c0.349,1.203,0.831,2.362,1.438,3.46l-3.441,4.813c-0.284,0.397-0.239,0.942,0.106,1.289l3.888,3.891 c0.343,0.343,0.884,0.391,1.281,0.112l4.87-3.411c1.093,0.601,2.248,1.078,3.445,1.424l0.976,5.861C21.3,47.647,21.717,48,22.206,48 h5.5c0.485,0,0.9-0.348,0.984-0.825l1.045-5.89c1.199-0.353,2.348-0.833,3.43-1.435l4.905,3.441 c0.398,0.281,0.938,0.232,1.282-0.111l3.888-3.891c0.346-0.347,0.391-0.894,0.104-1.292l-3.498-4.857 c0.593-1.08,1.064-2.222,1.407-3.408l5.918-1.039c0.479-0.084,0.827-0.5,0.827-0.985v-5.5C47.999,21.718,47.644,21.3,47.16,21.221z M25,32c-3.866,0-7-3.134-7-7c0-3.866,3.134-7,7-7s7,3.134,7,7C32,28.866,28.866,32,25,32z'/%3E%3C/svg%3E");
background-repeat: no-repeat;
background-size: cover;
transition: all 0.3s ease;
transform: rotate(0deg);
}
.fat-icon:hover::before {
transform: rotate(180deg);
}
.fat-settings {
position: fixed;
bottom: 72px;
right: 16px;
display: flex;
flex-direction: column;
padding: 16px;
max-width: 80%;
width: calc(350px - 32px);
height: fit-content;
color: #202020;
background-color: #fff;
border-radius: 6px;
transition: transform 0.3s ease;
transform: translateX(400px);
z-index: 10001;
}
.fat-settings p {
margin: 0;
padding: 0;
font-size: 16px;
}
.fat-settings button + p {
margin-top: 16px;
}
.fat-settings p span {
font-size: 13px;
}
.fat-settings textarea {
margin-top: 8px;
padding: 8px;
height: 150px;
max-height: 400px;
min-height: 100px;
line-height: 1.3;
letter-spacing: 0.5px;
font-weight: 400;
font-family: Verdana;
border-radius: 4px;
border: 1px solid #ccc;
resize: vertical;
}
.fat-settings button {
margin-top: 16px;
padding: 8px 16px;
width: fit-content;
color: #fff;
font-size: 13px;
border: 0px;
border-radius: 4px;
background-color: #00d1b2;
appearance: none;
cursor: pointer;
}
.fat-settings button:hover {
filter: saturate(130%);
}
.fat-settings button:active {
filter: saturate(150%);
}
.fat-settings.is-visible {
transform: translateX(0);
}
</style>`;
if (!document.querySelector('#userjs-preview-style')) {
document.head.insertAdjacentHTML('beforeend', addedStyle);
}
if (!document.querySelector('#fat-style')) {
document.head.insertAdjacentHTML('beforeend', settingsStyle);
}
const getCloseFileName = async () => JSON.parse((await GM_getValue('closeFileName')) || '[]');
const getMinSize = async () => {
const defaultValue = '480';
const storageValue = await GM_getValue('minSize');
return storageValue || defaultValue;
};
const hasFutakuroElm = () => document.querySelector('#fvw_menu') !== null;
// あぷ・あぷ小ファイルの文字列を見つけたらリンクに変換する（既にリンクになってたらスキップする）
const createAnchorLink = (elms) => {
const processNode = (node) => {
const regex = /((?<!<a[^>]*>)(fu?)([0-9]{5,8})\.(jpe?g|png|webp|gif|bmp)(?![^<]*<\/a>))/g;
if (node.nodeType === 3) {
let textNode = node;
// テキストノードの親要素がaタグである場合、処理をスキップ
if (textNode.parentNode?.nodeName === 'A') {
return;
}
let match;
while ((match = regex.exec(textNode.data)) !== null) {
const [fullMatch, _, type, digits, ext] = match;
const url =
type === 'fu'
? `//dec.2chan.net/up2/src/${type}${digits}.${ext}`
: `//dec.2chan.net/up/src/${type}${digits}.${ext}`;
const anchor = document.createElement('a');
anchor.href = url;
anchor.classList.add('is-createLink');
anchor.dataset.from = 'userjs-preview';
anchor.textContent = fullMatch;
const nextTextNode = textNode.splitText(match.index);
nextTextNode.data = nextTextNode.data.substring(fullMatch.length);
textNode.parentNode.insertBefore(anchor, nextTextNode);
textNode = nextTextNode;
}
} else if (node.nodeType !== 1 || node.tagName !== 'BR') {
const childNodes = Array.from(node.childNodes);
childNodes.forEach((childNode) => processNode(childNode));
}
};
for (const el of elms) {
processNode(el);
}
};
const setFailedText = (linkElm) => {
if (linkElm && linkElm instanceof HTMLAnchorElement) {
linkElm.insertAdjacentHTML('afterend', '<span class="userjs-preview-title">データ取得失敗</span>');
}
};
const getArrayBuffer = (path) => {
return new Promise((resolve) => {
GM_xmlhttpRequest({
method: 'GET',
url: path,
responseType: 'blob',
onload: ({ response }) => {
return resolve(response);
},
onerror: (error) => {
console.log(error);
},
});
});
};
class FileReaderEx extends FileReader {
constructor() {
super();
}
#readAs(blob, ctx) {
return new Promise((res, rej) => {
super.addEventListener('load', ({ target }) => target?.result && res(target.result));
super.addEventListener('error', ({ target }) => target?.error && rej(target.error));
super[ctx](blob);
});
}
readAsArrayBuffer(blob) {
return this.#readAs(blob, 'readAsArrayBuffer');
}
readAsDataURL(blob) {
return this.#readAs(blob, 'readAsDataURL');
}
}
const getPromptData = async (div, img) => {
try {
if (!img.src.endsWith('.png') || !window.ExifReader) return;
const buffer = await getArrayBuffer(img.src);
const data = await new FileReaderEx().readAsDataURL(buffer);
const tags = await window.ExifReader.load(data);
const parse = JSON.parse(tags?.['Comment']?.value || '{}');
if (Object.keys(parse).length === 0) return;
const { prompt } = parse;
const p = document.createElement('p');
p.classList.add('userjs-prompt');
p.textContent = prompt;
div.appendChild(p);
} catch (error) {
console.error(error);
}
};
const wrapperClickHandler = (e) => {
const self = e.currentTarget;
if (self.classList.contains('is-caution')) {
self.classList.remove('is-caution');
}
};
const makeCloseButton = () => {
const closeButtonElm = document.createElement('button');
closeButtonElm.classList.add('userjs-preview-close');
return closeButtonElm;
};
const setSetting = async () => {
const delay = (time = 500) => new Promise((resolve) => setTimeout(() => resolve(true), time));
const value = await getMinSize();
const toggleSetting = () => {
const settingElm = document.querySelector('[data-fat="settings"]');
settingElm?.classList.toggle('is-visible');
};
const saveSetting = async () => {
const minSizeElm = document.querySelector(`[data-fat="minSize"]`);
if (!minSizeElm) return;
const value = minSizeElm.value;
if (value === '' || /^[0-9]+$/.test(value) === false) {
alert('数値を入力してください');
return;
}
await GM_setValue('minSize', value);
const settingElm = document.querySelector('[data-fat="settings"]');
settingElm?.classList.remove('is-visible');
await delay(300);
location.reload();
};
const iconHTML = `<div class="fat-icon" data-fat="icon"></div>`;
const settingInnerHTML = `<p>デフォルトの画像サイズを指定、0で非表示</p>
<input type="text" data-fat="minSize" value="${value}">
<button type="button" data-fat="minSizeSave">条件を保存してリロード</button>`;
const settingHTML = `<div class="fat-settings" data-fat="settings">
${settingInnerHTML}
</div>`;
await delay(1000);
const hasFatIconElm = document.querySelector('[data-fat="icon"]') !== null;
const fatSettingsElm = document.querySelector('[data-fat="settings"]');
if (!hasFatIconElm) {
document.body.insertAdjacentHTML('afterbegin', iconHTML);
await delay(100);
const settingIconElm = document.querySelector(`[data-fat="icon"]`);
settingIconElm?.addEventListener('click', toggleSetting);
}
if (fatSettingsElm !== null) {
fatSettingsElm.insertAdjacentHTML('beforeend', settingInnerHTML);
await delay(100);
const settingSaveElm = document.querySelector(`[data-fat="minSizeSave"]`);
settingSaveElm?.addEventListener('click', saveSetting);
} else {
document.body.insertAdjacentHTML('afterbegin', settingHTML);
await delay(100);
const settingSaveElm = document.querySelector(`[data-fat="minSizeSave"]`);
settingSaveElm?.addEventListener('click', saveSetting);
}
};
const closeBtnEventHandler = async (e, div, fileName) => {
e.stopPropagation();
div.remove();
const data = await getCloseFileName();
if (!data.includes(fileName)) {
data.push(fileName);
GM_setValue('closeFileName', JSON.stringify(data));
}
};
const setImageElm = async (linkElm) => {
const imageMinSize = Number(await getMinSize());
const imageMaxSize = 1024;
const imageEventHandler = (e) => {
const self = e.currentTarget;
if (!(self instanceof HTMLImageElement)) return;
const naturalWidth = self.naturalWidth;
if (naturalWidth < imageMinSize) {
self.width = self.width === naturalWidth ? imageMinSize : naturalWidth;
} else if (self.width === imageMinSize) {
self.width = naturalWidth > imageMaxSize ? naturalWidth : imageMaxSize;
} else {
self.width = imageMinSize;
}
};
const fileName = (linkElm.textContent || '').trim();
const closeFileName = await getCloseFileName();
if (closeFileName.includes(fileName)) {
return;
}
const resText = linkElm.closest('blockquote')?.textContent;
const div = document.createElement('div');
const innerDiv = document.createElement('div');
div.classList.add('userjs-preview-imageWrap');
innerDiv.classList.add('userjs-preview-inner');
if (/注意|グロ/g.test(resText || '')) {
innerDiv.classList.add('is-caution');
}
const img = document.createElement('img');
const closeBtnElm = makeCloseButton();
img.addEventListener('load', () => {
if (img.naturalWidth < imageMinSize) {
img.width = img.naturalWidth;
}
getPromptData(div, img);
});
img.addEventListener('error', () => setFailedText(linkElm));
img.src = linkElm.href;
img.width = imageMinSize;
img.classList.add('userjs-preview-image');
innerDiv.appendChild(img);
innerDiv.appendChild(closeBtnElm);
div.appendChild(innerDiv);
img.addEventListener('click', imageEventHandler);
innerDiv.addEventListener('click', wrapperClickHandler);
closeBtnElm.addEventListener('click', (e) => closeBtnEventHandler(e, div, fileName));
linkElm.insertAdjacentElement('afterend', div);
return img;
};
const setLoading = async (linkElm) => {
const parentElm = linkElm.parentElement;
if (parentElm instanceof HTMLFontElement) {
return;
}
linkElm.classList.add('userjs-preview-link');
};
const removeLoading = (targetElm) => targetElm.classList.remove('userjs-preview-link');
// ふたクロで「新着レスに自動スクロール」にチェックが入っている場合画像差し込み後に下までスクロールさせる
const scrollIfAutoScrollIsEnabled = () => {
const checkboxElm = document.querySelector('#autolive_scroll');
const readmoreElm = document.querySelector('#res_menu');
if (checkboxElm === null || readmoreElm === null || !checkboxElm?.checked) {
return;
}
const elementHeight = readmoreElm.offsetHeight;
const viewportHeight = window.innerHeight;
const offsetTop = readmoreElm.offsetTop;
window.scrollTo({
top: offsetTop - viewportHeight + elementHeight,
behavior: 'smooth',
});
};
const setResNumber = (linkElm, fileName) => {
const tdElm = linkElm.closest('td.rtd');
const resNumber = tdElm?.querySelector('.rsc');
if (resNumber && resNumber.textContent) {
const num = Number(resNumber.textContent);
const storage = resNumberStorage[num];
if (Number.isInteger(num) && fileName) {
if (typeof storage === 'undefined') {
resNumberStorage[num] = [fileName];
} else if (Array.isArray(storage) && !storage.includes(fileName)) {
storage.push(fileName);
}
}
}
};
const isFindFileNameFromStorage = (fileName) =>
Object.keys(resNumberStorage).some((key) => {
const arr = resNumberStorage?.[Number(key)];
return arr && fileName && arr.includes(fileName);
});
const insertURLData = async (linkElm, match) => {
const [, , , fileName] = match;
const imageElm = await setImageElm(linkElm);
if (imageElm instanceof HTMLImageElement) {
linkElm.classList.add('is-intersecting');
setResNumber(linkElm, fileName);
imageElm.onload = () => scrollIfAutoScrollIsEnabled();
}
removeLoading(linkElm);
};
const linkRegExp =
/((tsumanne\.net\/si\/data|\w+\.2chan\.net\/up[0-9]?\/src)\/)?(fu?[0-9]{5,8}\.(jpe?g|png|gif|webp|bmp))/;
class LinkObserver {
targetLink;
isObserving;
matchLink;
options;
constructor(targetLink) {
this.targetLink = targetLink;
this.isObserving = this.targetLink.classList.contains('is-observing');
this.matchLink = this.targetLink.href.match(linkRegExp);
this.options = {
rootMargin: '800px 0px 0px 0px',
};
}
observer() {
return new IntersectionObserver(async ([entry], observer) => {
if (entry.isIntersecting) {
observer.disconnect();
const linkElm = entry.target;
if (this.matchLink && linkElm instanceof HTMLAnchorElement) {
await setLoading(linkElm);
if (linkElm.classList.contains('userjs-preview-link')) {
await insertURLData(linkElm, this.matchLink);
}
}
}
}, this.options);
}
check() {
if (this.matchLink === null) {
return false;
}
const isQuoteText = this.targetLink.closest('font[color="#789922"]') !== null;
const [, , , fileName] = this.matchLink;
if (isQuoteText || isFindFileNameFromStorage(fileName)) {
return false;
}
return true;
}
init() {
const isCheckOK = this.check();
if (isCheckOK && !this.isObserving && this.matchLink) {
this.targetLink.classList.add('is-observing');
this.observer().observe(this.targetLink);
}
}
}
const getLinkElm = (threElm) => {
const linkElms = threElm.querySelectorAll('a[href*="2chan.net/up"], a[href^="f"]');
if (linkElms.length) {
return linkElms;
}
return [];
};
const deleteDuplicate = (blockquoteElms) => {
for (const blockquoteElm of blockquoteElms) {
const anchorElms = blockquoteElm.querySelectorAll('a[data-orig]');
for (const anchorElm of anchorElms) {
const newAnchorElm = anchorElm.querySelector('a[data-from]');
if (newAnchorElm !== null) {
anchorElm.outerHTML = newAnchorElm.outerHTML;
}
}
}
};
const setLinkObserver = (linkElms) => {
for (const linkElm of linkElms) {
if (linkElm instanceof HTMLAnchorElement) {
const linkObserver = new LinkObserver(linkElm);
linkObserver.init();
}
}
};
const mutationLinkElements = async (mutations) => {
const futakuroState = hasFutakuroElm();
for (const mutation of mutations) {
for (const addedNode of mutation.addedNodes) {
if (!(addedNode instanceof HTMLElement)) continue;
const newBlockQuotes = addedNode.querySelectorAll('blockquote');
if (!futakuroState) {
createAnchorLink(newBlockQuotes);
deleteDuplicate(newBlockQuotes);
}
for (const newBlockQuote of newBlockQuotes) {
const linkElms = newBlockQuote.querySelectorAll('a');
if (linkElms.length) {
setLinkObserver(linkElms);
}
}
}
}
};
// ふたクロが無い環境用にアンカーリンクを生成したい
const exec = () => {
const threadElm = document.querySelector('.thre');
const isTsumanne = location.hostname === 'tsumanne.net';
const isFutakuro = location.hostname === 'kako.futakuro.com';
if (!isTsumanne && !isFutakuro && !hasFutakuroElm() && !initExecCreateLink && threadElm instanceof HTMLElement) {
const quoteElms = threadElm.querySelectorAll('blockquote');
initExecCreateLink = true;
if (initTimer) {
clearTimeout(initTimer);
}
createAnchorLink(quoteElms);
for (const quoteElm of quoteElms) {
const linkElms = quoteElm.querySelectorAll('.is-createLink');
setLinkObserver(linkElms);
}
}
};
const threadElm = document.querySelector('.thre');
if (threadElm instanceof HTMLElement) {
setSetting();
const linkElms = getLinkElm(threadElm);
setLinkObserver(linkElms);
const observer = new MutationObserver(mutationLinkElements);
observer.observe(threadElm, {
childList: true,
subtree: true,
});
initTimer = setTimeout(exec, 1500);
}
})();
