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ExHentai autoscroll and next

automatic scroll and next for easier, handless reading of exHentai galleries

  1. // ==UserScript==
  2. // @name         ExHentai autoscroll and next
  3. // @namespace    none
  4. // @version      0.1
  5. // @description  automatic scroll and next for easier, handless reading of exHentai galleries
  6. // @author       saddestpandaever
  7. // @match        *://exhentai.org/s/*
  8. // ==/UserScript==
  9.  
  10. (function() {
  11.     'use strict';
  12.     var header = document.getElementsByTagName("h1")[0];
  13.     var button = document.createElement("button");
  14.     button.innerHTML = "Start scrolling";
  15.     button.onclick = function(){
  16.         scrollDown(20);
  17.     };
  18.     header.appendChild(button);
  19. })();
  20.  
  21. function sleep(ms) {
  22.     return new Promise(resolve => setTimeout(resolve, ms));
  23. }
  24.  
  25. async function clickNext(next){
  26.     await sleep(2000);
  27.     next.click();
  28. }
  29.  
  30. async function scrollDown(delay){
  31.  
  32.     var windowScrollBottom, botDiv = document.getElementById("i4"), next = document.getElementById("next"), imagediv = document.getElementById("i3");
  33.  
  34.     var plus = document.createElement("button"), minus=document.createElement("button"), pause = document.createElement("button"), paused=false, speedindicator = document.createElement("text");
  35.     plus.innerHTML = "+"; minus.innerHTML = "-"; pause.innerHTML = "P"; speedindicator.innerHTML = Math.floor(1000/delay)+"px/s";
  36.     plus.setAttribute("style", "width:30; height:30; margin-left: -30px; background-color: #666666; position:fixed");
  37.     minus.setAttribute("style", "width:30; height:30; margin-left: -30px; background-color: #666666; margin-top: 20px; position:fixed");
  38.     pause.setAttribute("style", "width:30; height:30; margin-left: -30px; background-color: #666666; margin-top: 40px; position:fixed");
  39.     speedindicator.setAttribute("style", "width:30; height:30; margin-left: -30px; margin-top: 65px; position:fixed");
  40.     function updateSpeedIndicator(){
  41.         speedindicator.innerHTML = Math.floor(1000/delay) + "px/s";
  42.     }
  43.  
  44.     plus.onclick = function() {
  45.         if(delay > 2) delay=delay-2;
  46.         updateSpeedIndicator();
  47.     };
  48.     minus.onclick = function() {
  49.         delay=delay+2;
  50.         updateSpeedIndicator();
  51.  
  52.     };
  53.     pause.onclick = function() {
  54.         paused=!paused;
  55.     };
  56.     imagediv.prepend(plus, minus, pause,speedindicator);
  57.  
  58.  
  59.     while(true){
  60.         while(paused){ await sleep(10);}
  61.  
  62.         await sleep(delay);
  63.         window.scrollBy(0, 1);
  64.         windowScrollBottom=window.pageYOffset + window.innerHeight;
  65.  
  66.         if(windowScrollBottom > botDiv.offsetTop){
  67.             next = document.getElementById("next");
  68.             await sleep(1500);//ms to stay at the bottom of the page before going to the next
  69.             await clickNext(next);
  70.             await sleep(300);
  71.  
  72.             imagediv = document.getElementById("i3");
  73.             await imagediv.scrollIntoView();
  74.             imagediv.prepend(plus, minus, pause,speedindicator);
  75.  
  76.             await sleep(1500);//ms before starting to scroll
  77.         }
  78.     }
  79. }