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正方形にトリミングされて表示されるのを防止します。Retinaディスプレイで高解像度のサムネイルを使用します。
// ==UserScript==
// @name Improve pixiv thumbnails
// @name:ja pixivサムネイルを改善する
// @namespace https://www.kepstin.ca/userscript/
// @license MIT; https://spdx.org/licenses/MIT.html
// @version 20200116.0
// @description Stop pixiv from cropping thumbnails to a square. Use higher resolution thumbnails on Retina displays.
// @description:ja 正方形にトリミングされて表示されるのを防止します。Retinaディスプレイで高解像度のサムネイルを使用します。
// @author Calvin Walton
// @match https://www.pixiv.net/
// @match https://www.pixiv.net/artworks/*
// @match https://www.pixiv.net/bookmark.php*
// @match https://www.pixiv.net/bookmark_add.php*
// @match https://www.pixiv.net/bookmark_new_illust.php*
// @match https://www.pixiv.net/discovery
// @match https://www.pixiv.net/discovery/users
// @match https://www.pixiv.net/en/
// @match https://www.pixiv.net/en/artworks/*
// @match https://www.pixiv.net/en/tags/*
// @match https://www.pixiv.net/en/users/*
// @match https://www.pixiv.net/history.php*
// @match https://www.pixiv.net/howto*
// @match https://www.pixiv.net/member.php*
// @match https://www.pixiv.net/member_illust.php*
// @match https://www.pixiv.net/new_illust.php*
// @match https://www.pixiv.net/new_illust_r18.php*
// @match https://www.pixiv.net/ranking.php*
// @match https://www.pixiv.net/search.php*
// @match https://www.pixiv.net/stacc*
// @match https://www.pixiv.net/tags/*
// @match https://www.pixiv.net/users/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
// The src prefix: scheme and domain
let src_prefix = 'https://i.pximg.net';
// The src suffix for thumbnails
let thumb_suffix = '_master1200.jpg';
// A regular expression that matches pixiv thumbnail urls
// Has 3 captures:
// $1: thumbnail width (optional)
// $2: thumbnail height (optional)
// $3: everything in the URL after the thumbnail size up to the image suffix
let src_regexp = /https?:\/\/i\.pximg\.net(?:\/c\/(\d+)x(\d+)(?:_[^\/]*)?)?\/(?:custom-thumb|img-master)\/(.*)_(?:custom|master|square)1200.jpg/;
// Create a srcset= attribute on the img, with appropriate dpi scaling values
function imgSrcset(img, size, url_stuff) {
img.srcset = `${src_prefix}/c/150x150/img-master/${url_stuff}${thumb_suffix} ${150 / size}x,
${src_prefix}/c/240x240/img-master/${url_stuff}${thumb_suffix} ${240 / size}x,
${src_prefix}/c/360x360_70/img-master/${url_stuff}${thumb_suffix} ${360 / size}x,
${src_prefix}/c/600x600/img-master/${url_stuff}${thumb_suffix} ${600 / size}x,
${src_prefix}/img-master/${url_stuff}${thumb_suffix} ${1200 / size}x`;
if (150 / size >= window.devicePixelRatio) {
img.src = `${src_prefix}/c/150x150/img-master/${url_stuff}${thumb_suffix}`;
} else if (240 / size >= window.devicePixelRatio) {
img.src = `${src_prefix}/c/240x240/img-master/${url_stuff}${thumb_suffix}`;
} else if (360 / size >= window.devicePixelRatio) {
img.src = `${src_prefix}/c/360x360_70/img-master/${url_stuff}${thumb_suffix}`;
} else if (600 / size >= window.devicePixelRatio) {
img.src = `${src_prefix}/c/600x600/img-master/${url_stuff}${thumb_suffix}`;
} else { /* 1200 */
img.src = `${src_prefix}/img-master/${url_stuff}${thumb_suffix}`;
}
}
function findParentSize(node) {
let size = 0;
let e = node;
while (!size) {
if (e.attributes.width && e.attributes.height) {
let width = +e.attributes.width.value;
let height = +e.attributes.height.value;
if (width && width > size) { size = width; }
if (height && height > size) { size = height; }
return size;
}
if (!e.parentElement) {
console.log("Couldn't find a parent node with size set for", node);
return size;
}
e = e.parentElement;
}
}
// We're using some uncommon thumbnail dimensions, and pixiv might not have them pre-cached. The thumbnail
// request sometimes errors out (404) on thumbnails that are slow to generate, so retry them until they
// load
function imgErrorHandler(event) {
let self = this;
if ((self.dataset.kepstinRetry|0) > 6) {
console.log("gave up loading", self.src);
return;
}
self.dataset.kepstinRetry = (self.dataset.kepstinRetry|0) + 1;
let sleep = Math.min((self.dataset.kepstinRetry|0) * 2 + 1, 10);
console.log("error loading", self.src, "try", self.dataset.kepstinRetry, "sleep", sleep);
window.setTimeout(function() { console.log("reloading", self.src); self.src = self.src; }, sleep * 1000);
event.stopImmediatePropagation();
event.stopPropagation();
return false;
}
function handleImg(node) {
if (node.dataset.kepstinThumbnail) { return; }
if (!node.src.startsWith(src_prefix)) { node.dataset.kepstinThumbnail = 'skip'; return; }
let m = node.src.match(src_regexp);
if (!m) { node.dataset.kepstinThumbnail = 'bad'; return; }
let size = findParentSize(node);
imgSrcset(node, size, m[3]);
node.style.objectFit = 'contain';
node.addEventListener('error', imgErrorHandler);
node.dataset.kepstinThumbnail = 'ok';
}
function handleLayoutThumbnail(node) {
if (node.dataset.kepstinThumbnail) { return; }
// Check for lazy-loaded images, which have a temporary URL
// They'll be updated later when the src is set
if (node.src.startsWith('data:') || node.src.endsWith('transparent.gif')) { return; }
if (!node.src.startsWith(src_prefix)) { node.dataset.kepstinThumbnail = 'skip'; return; }
let m = node.src.match(src_regexp);
if (!m) { node.dataset.kepstinThumbnail = 'bad'; return; }
let size = Math.max(m[1], m[2]);
if (!size) { size = 1200 };
imgSrcset(node, size, m[3]);
node.width = node.style.width = m[1];
node.height = node.style.height = m[2];
node.style.objectFit = 'contain';
node.addEventListener('error', imgErrorHandler);
node.dataset.kepstinThumbnail = 'ok';
}
function handleDivBackground(node) {
if (node.dataset.kepstinThumbnail) { return; }
// Check for lazy-loaded images
// They'll be updated later when the background image (in style attribute) is set
if (node.classList.contains('js-lazyload') || node.classList.contains('lazyloaded') || node.classList.contains('lazyloading')) { return; }
if (node.style.backgroundImage.indexOf(src_prefix) == -1) { node.dataset.kepstinThumbnail = 'skip'; return; }
let m = node.style.backgroundImage.match(src_regexp);
if (!m) { node.dataset.kepstinThumbnail = 'bad'; return; }
let size = Math.max(node.clientWidth, node.clientHeight);
let parentNode = node.parentElement;
let img = document.createElement('IMG');
imgSrcset(img, size, m[3]);
img.class = node.class;
img.alt = node.getAttribute('alt');
img.style.width = node.style.width;
img.style.height = node.style.height;
img.style.objectFit = 'contain';
img.addEventListener('error', imgErrorHandler);
img.dataset.kepstinThumbnail = 'ok';
node.replaceWith(img);
}
function handleABackground(node) {
if (node.dataset.kepstinThumbnail) { return; }
if (node.style.backgroundImage.indexOf(src_prefix) == -1) { node.dataset.kepstinThumbnail = 'skip'; return; }
let m = node.style.backgroundImage.match(src_regexp);
if (!m) { node.dataset.kepstinThumbnail = 'bad'; return; }
let size = Math.max(node.clientWidth, node.clientHeight);
let img = document.createElement('IMG');
imgSrcset(img, size, m[3]);
img.alt = '';
img.style.width = '100%';
img.style.height = '100%';
img.style.objectFit = 'contain';
img.style.position = 'absolute';
img.addEventListener('error', imgErrorHandler);
img.dataset.kepstinThumbnail = 'ok';
node.style.backgroundImage = '';
node.prepend(img);
}
function onetimeThumbnails(parentNode) {
for (let node of parentNode.querySelectorAll('img')) {
if (node.parentElement.classList.contains('_layout-thumbnail')) {
handleLayoutThumbnail(node);
} else {
handleImg(node);
}
}
for (let node of parentNode.querySelectorAll('div[style*=background-image]')) {
handleDivBackground(node);
}
for (let node of parentNode.querySelectorAll('a[style*=background-image]')) {
handleABackground(node);
}
}
function mutationObserverCallback(mutationList, observer) {
for (let mutation of mutationList) {
switch (mutation.type) {
case 'childList':
for (let node of mutation.addedNodes) {
if (node.nodeName == 'IMG') {
handleImg(node);
} else if (node.nodeName == 'DIV') {
if (node.style.backgroundImage) {
handleDivBackground(node);
} else {
onetimeThumbnails(node);
}
} else if (node.nodeName == 'A') {
if (node.style.backgroundImage) {
handleABackground(node);
}
} else if (node.nodeName == 'SECTION' || node.nodeName == 'LI') {
onetimeThumbnails(node);
}
}
break;
case 'attributes':
if (mutation.target.nodeName == 'DIV') {
if (mutation.target.style.backgroundImage) {
handleDivBackground(mutation.target);
}
} else if (mutation.target.nodeName == 'IMG') {
if (mutation.target.parentElement.classList.contains('_layout-thumbnail')) {
handleLayoutThumbnail(mutation.target);
}
}
break;
}
}
}
if (!window.kepstinThumbnailObserver) {
onetimeThumbnails(document.firstElementChild);
window.kepstinThumbnailObserver = new MutationObserver(mutationObserverCallback);
window.kepstinThumbnailObserver.observe(document.firstElementChild, { childList: true, subtree: true, attributes: true, attributeFilter: [ 'class', 'src' ] });
}
})();
