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AutoScroll2

AutoScroll - Automatically scroll down the page, supporting hotkey control switches and speed adjustment (自动向下滚动页面，支持热键控制开关和速度调节)

  1. // ==UserScript==
  2. // @name        AutoScroll2
  3. // @description AutoScroll - Automatically scroll down the page, supporting hotkey control switches and speed adjustment (自动向下滚动页面，支持热键控制开关和速度调节)
  4. // @include     http*
  5. // @version     1.0.2
  6. // @author      Eilen https://github.com/EilenC
  7. // @grant       none
  8. // @namespace https://gf.qytechs.cn/users/319354
  9. // @supportURL https://github.com/EilenC/Tampermonkey-Scripts/blob/master/AutoScroll2/AutoScroll2.js
  10. // ==/UserScript==
  11.  
  12. (function (document) {
  13.     'use strict';
  14.  
  15.     function roundToTwoDecimalPlaces(number) {
  16.         return Number(number.toFixed(2));
  17.     }
  18.  
  19.     let notificationTimer = null;
  20.     let notification = document.createElement('div');
  21.     let tipsTime = 300;
  22.  
  23.     function showNotification(message, duration) {
  24.         clearTimeout(notificationTimer);
  25.         notification.textContent = message;
  26.         notification.style.position = 'fixed';
  27.         notification.style.top = '50%';
  28.         notification.style.left = '50%';
  29.         notification.style.transform = 'translate(-50%, -50%)';
  30.         notification.style.background = 'black';
  31.         notification.style.color = 'white';
  32.         notification.style.fontWeight = 'bold';
  33.         notification.style.fontSize = '40px';
  34.         notification.style.padding = '20px';
  35.         notification.style.borderRadius = '10px';
  36.         notification.style.zIndex = '9999';
  37.         document.body.appendChild(notification);
  38.         notificationTimer = setTimeout(function () {
  39.             document.body.removeChild(notification);
  40.             notificationTimer = null;
  41.         }, duration);
  42.     }
  43.  
  44.     let scrollY = 0;
  45.     let scrollSpeed = 0.5; // 默认滚动速度
  46.     let isScrolling = false;
  47.  
  48.     let lastScrollTime = performance.now();
  49.     const targetFrameDelay = 1000 / 60; // 目标帧率为每秒 60 帧
  50.     let animationFrameId = null;
  51.  
  52.     function scrollAnimation(currentTime) {
  53.         if (isScrolling) {
  54.             const elapsedTime = currentTime - lastScrollTime;
  55.             if (elapsedTime >= targetFrameDelay) {
  56.                 const deltaScroll = scrollSpeed * (elapsedTime / targetFrameDelay);
  57.                 scrollY += deltaScroll;
  58.                 window.scrollTo(0, scrollY);
  59.                 lastScrollTime = currentTime;
  60.             }
  61.             animationFrameId = requestAnimationFrame(scrollAnimation);
  62.         } else {
  63.             cancelAnimationFrame(animationFrameId);
  64.             animationFrameId = null;
  65.         }
  66.     }
  67.  
  68.     // 开始滚动
  69.     function startScroll() {
  70.         isScrolling = true;
  71.         scrollY = window.scrollY || document.documentElement.scrollTop;
  72.         lastScrollTime = performance.now();
  73.         animationFrameId = requestAnimationFrame(scrollAnimation);
  74.     }
  75.  
  76.     // 停止滚动
  77.     function stopScroll() {
  78.         isScrolling = false;
  79.         if (animationFrameId !== null) {
  80.             cancelAnimationFrame(animationFrameId);
  81.             animationFrameId = null;
  82.         }
  83.         scrollY = 0; // 清空滚动位置
  84.         lastScrollTime = 0; // 重置上次滚动时间
  85.     }
  86.  
  87.     let lastKeyDownTime = 0;
  88.     let keyDownCount = 0;
  89.     // 键盘事件处理
  90.     document.addEventListener('keydown', (event) => {
  91.         let currentTime = new Date().getTime();
  92.         switch (event.key) {
  93.             case 's':
  94.             case 'ArrowLeft':
  95.                 if(isScrolling){
  96.                     let step = 0.01
  97.                     if (scrollSpeed > 2) {
  98.                         step = 0.1
  99.                     }
  100.                     scrollSpeed = Math.max(scrollSpeed - step, 0.01);
  101.                     showNotification('AutoScroll:Speed: ' + roundToTwoDecimalPlaces(scrollSpeed), tipsTime);
  102.                 }
  103.                 break;
  104.             case 'a':
  105.             case 'ArrowRight':
  106.                 if(isScrolling){
  107.                     scrollSpeed = Math.min(scrollSpeed + 0.1, 99);
  108.                     showNotification('AutoScroll:Speed: ' + roundToTwoDecimalPlaces(scrollSpeed), tipsTime);
  109.                 }
  110.                 break;
  111.             case "`":
  112.                 if (currentTime - lastKeyDownTime < 300) {
  113.                     keyDownCount++;
  114.                 } else {
  115.                     keyDownCount = 1;
  116.                 }
  117.  
  118.                 lastKeyDownTime = currentTime;
  119.  
  120.                 if (keyDownCount === 2) {
  121.                     if (isScrolling) {
  122.                         stopScroll();
  123.                         showNotification('AutoScroll:Off', tipsTime);
  124.                     } else {
  125.                         startScroll();
  126.                         showNotification('AutoScroll:On', tipsTime);
  127.                     }
  128.                     keyDownCount = 0;
  129.                 }
  130.                 break;
  131.         }
  132.     });
  133. })(document);

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