e621 Thumbnail Enhancer 2

Resizes thumbnails on e621.net and replaces them with hi-rez version. Modified for the new site design sometime around 2020-03-06

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         e621 Thumbnail Enhancer 2
// @version      2.2
// @description  Resizes thumbnails on e621.net and replaces them with hi-rez version. Modified for the new site design sometime around 2020-03-06
// @author       justrunmyscripts
// @include      *://*e621.net*
// @grant        GM.xmlHttpRequest
// @namespace    https://sleazyfork.org/en/users/96703-justrunmyscripts
// @run-at       document-end
// ==/UserScript==


// original script creator https://greasyfork.org/de/users/398891
// to edit the size of the thumbnails, change the PICTURE_SIZE variable under

try {

  let PICTURE_SIZE = 24; // this number is in vw units (percent of screen width!)

  let postContainerIdentifier;
  const path = window.location.pathname;
  switch(true) {
    // case '/explore/posts/popular' === path:
    //   postContainerIdentifier = '#a-popular';
    //   break;
    // case /\/pools\/.*/.test(path):
    //   postContainerIdentifier = '#c-pools section:last-child';
    //   PICTURE_SIZE = 46;
    //   break;
    // case '/favorites' === path:
    //   postContainerIdentifier = '#posts .posts-container';
    //   break;
    default:
      postContainerIdentifier = '#posts .posts-container';
      break;
  }

  let sty =document.createElement("style");
  sty.innerHTML=[
    ""
    ,".thumbEnh_cont {"
    ,"    display: flex;"
    ,"    flex-flow: row wrap;"
    ,"    justify-content: space-between;"
    ,"    gap: 10px;"
    ,"}"
    ,".thumbEnh_cont img.thumbEnh_img {"
    ,"    max-height: 100%;"
    ,"    max-width: 100%;"
    ,"}"
    ,".thumbEnh_cont video.thumbEnh_video {"
    ,"    height: 100%;"
    ,"    width: 100%;"
    ,"}"
    ,".thumbEnh_cont article.thumbnail {"
    ,`    width: ${PICTURE_SIZE}vw !important;`
    ,`    max-width: unset;`
    ,"}"
    ,"article.thumbnail a {"
    ,"    max-width: fit-content;"
    ,"    max-height: fit-content;"
    ,"}"
  ].join("");
  document.head.appendChild(sty);


  /* Replace image thumbnails with higher resolution */
  class ImageFetcher {
    constructor (originalArticle) {
      this.parentArticle = originalArticle;
      this.originalImage = originalArticle.querySelector('img');
      this.origSrc = this.originalImage.src;
      this.originalImage.className = "thumbEnh_img";

      if (this.isWebm()) {
      	this.replaceImageWithVideo();
      }
      else if (this.isGif()){
        this.originalImage.src = this.getOrigFileURL();
      }
      else if (this.hasLargeFile()){
        this.originalImage.src = this.getLargeFileURL();
        this.originalImage.addEventListener('error', (() => {
        	this.originalImage.src = this.getOrigFileURL();
        }).bind(this));
      } else {
        this.originalImage.src = this.getOrigFileURL();
      }
    }

    hasLargeFile() {
      return !!this.getLargeFileURL();
    }

    isGif() {
      return !!this.getOrigFileURL().endsWith('.gif');
    }

    isWebm() {
      return !!this.getOrigFileURL().endsWith('.webm');
    }

    getLargeFileURL() {
      return this.parentArticle.getAttribute('data-large-url');
    }

    getOrigFileURL() {
      return this.parentArticle.getAttribute('data-file-url');
    }

    replaceImageWithVideo() {
      const video = document.createElement('video');
      video.setAttribute('controls', true);
      video.setAttribute('class', 'thumbEnh_video');
      video.setAttribute('src', this.getOrigFileURL());

    	const parent = this.originalImage.parentNode;
      parent.replaceChild(video, this.originalImage)
    }
  }

  const main = () => {
    let contDiv = document.querySelector(postContainerIdentifier);
    contDiv.className = "thumbEnh_cont";

    let arts = document.querySelectorAll('article.thumbnail');
    for (art of arts) {
      new ImageFetcher(art);
    }

    // remove extra sources, since we're just using the "high rez" version anyways!
    let sources = document.querySelectorAll('article.thumbnail source');
    for (source of sources) {
      let parent = source.parentNode;
      parent.removeChild(source);
    }
  };

  main();

} catch (e) {
  // due to the way greasemonkey 'traps' errors, it kinda hides where the problem is!
  // this is an attempt at "fixing" that
  console.error(e);
}