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Smoothscroll

Smooth scrolling on pages using javascript and jquery

目前为 2016-10-28 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name Smoothscroll
  3. // @include     http*
  4. // @author       Creec Winceptor
  5. // @description  Smooth scrolling on pages using javascript and jquery
  6. // @namespace https://greasyfork.org/users/3167
  7. // @run-at document-idle
  8. // @grant    none
  9. // @grant       GM_getValue
  10. // @grant       GM_setValue
  11. // @grant       GM_registerMenuCommand
  12. // @version 1.3
  13. // ==/UserScript==
  14.  
  15. if (window.top != window.self)  //don't run on frames or iframes
  16.     return;
  17.  
  18.  
  19.  
  20.  
  21.  
  22. //DEFAULT SETTINGS HERE 
  23. //DO NOT CHANGE ANYTHING HERE ANYMORE, USE SCRIPT COMMANDS -> CONFIGURE SMOOTHSCROLL
  24.  
  25.  
  26.  
  27.  
  28.  
  29.  
  30. //Smoothness factor value (how strong the smoothing effect is)
  31. //values: 1-(infinite)
  32. var smoothness = 30;
  33.  
  34. //Scroll sensitivity
  35. //values: anything? (default 1.00)
  36. var sensitivity = 1;
  37.  
  38. //Acceleration sensitivity
  39. //values: anything? (default 1.50)
  40. var acceleration = 1;
  41.  
  42. //Refreshrate setting
  43. //values: 30-144 (default = 60/72/120/144 = same as your monitor hz)
  44. var baserefreshrate = 60;
  45.  
  46.  
  47. //Alternative scrolling multiplier
  48. //values: true/false (try to set this to true if scrolling is too slow/doesn't work)
  49. var alternative_sensitivity_multiplier = false;
  50.  
  51.  
  52. //CODE STARTS HERE
  53.  
  54. var minimal_jquery_version = 200;
  55.  
  56. //max retries
  57. var jquery_retry_max = 5;
  58. var jquery_retry_count = 0;
  59.  
  60.  
  61. var DEBUG = false;
  62.  
  63. var WEBKIT = false;
  64.  
  65. //this.$ = this.jQuery = jQuery.noConflict(true);
  66.  
  67. console.log("Loading smoothscroll...");
  68.  
  69. if (smoothness>100)
  70. {
  71. 	smoothness = 100;
  72. }
  73.  
  74. if (baserefreshrate <= 30 || baserefreshrate>144)
  75. {
  76. 	baserefreshrate = 144;
  77. }
  78. refreshrate = baserefreshrate;
  79.  
  80. var animationduration = Math.round(1000/refreshrate);
  81. //var relativeratio = Math.round(51-smoothness/2)/100;
  82. var relativeratio = Math.round(1/(1+smoothness*refreshrate/baserefreshrate)*100)/100;
  83. //var relativeratio = relativeratio;
  84.  
  85.  
  86.  
  87. var lastLoop = new Date;
  88. //var lastrefreshrate = 0;
  89. function gameLoop() { 
  90. 	var thisLoop = new Date;
  91.     var refreshrate0 = 1000 / (thisLoop - lastLoop + 1);
  92.     lastLoop = thisLoop;
  93. 	
  94. 	refreshrate = refreshrate + (refreshrate0-refreshrate)*0.1;
  95. 	refreshrate = Math.round(refreshrate);
  96. 	
  97. 	if (DEBUG)
  98. 	{
  99. 		console.log(refreshrate);
  100. 	}
  101.   //console.log(refreshrate);
  102. 	
  103. 	animationduration = Math.round(1000/(refreshrate));
  104. 	//var relativeratio = Math.round(51-smoothness/2)/100;
  105. 	relativeratio = Math.round(1/(1+smoothness*refreshrate/baserefreshrate)*100)/100;
  106. }
  107. gameLoop();
  108.  
  109.  
  110. function InitSmoothscroll()
  111. {
  112.   
  113.   LoadConfig();
  114.  
  115.   InitConfigmenu();
  116.  
  117. var startposition = false;
  118. var targetposition = 0;
  119. var position = 0;
  120.  
  121. var scrollfocus = ss$('body');
  122. var mousemoved = true;
  123.   
  124. function hasScrollBarVisible(element)
  125. {
  126.   //return (document.documentElement.scrollHeight !== document.documentElement.clientHeight);
  127.  
  128.   // Get the computed style of the body element
  129.   var cStyle = element.currentStyle||window.getComputedStyle(element, "");
  130.  
  131.   // Check the overflow and overflowY properties for "auto" and "visible" values
  132.   var scrollbar1 = cStyle.overflow == "scroll" || cStyle.overflowY == "scroll";
  133.  
  134. 	var scrollbar2 = cStyle.overflow == "auto" || cStyle.overflowY == "auto";
  135. 	
  136. 	var scrollbar = scrollbar1 || scrollbar2;
  137.  
  138.   return scrollbar;
  139. }
  140.  
  141.  
  142. function hasscrollbars(scrollfocus)
  143. {
  144. 	var hasvisiblescrollbars = hasScrollBarVisible(scrollfocus);
  145. 	var parentelement = ss$(scrollfocus).parent();
  146. 	if ( ss$(parentelement))
  147. 	{
  148. 		if (ss$(parentelement).is("textarea") || ss$(scrollfocus).is("textarea") || ss$(parentelement).is("article") || ss$(parentelement).is("article"))
  149. 		{
  150. 			return true;
  151. 		}
  152. 		else
  153. 		{
  154. 			if (ss$(parentelement).hasClass( "yt-scrollbar" ) || ss$(scrollfocus).hasClass( "yt-scrollbar" ))
  155. 			{
  156. 				return true;
  157. 			}
  158. 			return hasvisiblescrollbars;
  159. 		}
  160. 	}
  161. 	else
  162. 	{
  163. 		return hasvisiblescrollbars;
  164. 	}
  165. 	return false;
  166. }
  167.  
  168. function UpdatePosition(element)
  169. {
  170. 	gameLoop();
  171. 	
  172. 	var positiondelta = scrollpositiondelta(element);
  173.                   
  174. 	var smoothdelta = Math.sqrt(positiondelta*positiondelta*relativeratio);
  175. 	
  176. 	if (positiondelta<0)
  177. 	{
  178. 		smoothdelta = smoothdelta*(-1);
  179. 	}
  180. 	
  181. 	if (Math.abs( (positiondelta-smoothdelta)) <= 1 )
  182. 	{
  183. 		ss$(element).stop();
  184. 		ss$(element).animate({
  185. 			scrollTop: '+=' + Math.round(positiondelta)
  186. 		}, animationduration, "linear", function() {
  187.           	scrollpositiondelta(element, 0);
  188. 			if (DEBUG)
  189. 			{
  190. 				ss$(element).css( "border", "1px solid red" );
  191. 			}
  192. 		});
  193. 	}
  194. 	else
  195. 	{
  196. 		ss$(element).stop();
  197. 		ss$(element).animate({
  198. 			scrollTop: '+=' + Math.round(smoothdelta)
  199. 		}, animationduration, "linear", function() {
  200. 			scrollpositiondelta(element, positiondelta-smoothdelta);
  201. 			UpdatePosition(element);
  202. 			if (DEBUG)
  203. 			{
  204. 				ss$(element).css( "border", "1px solid red" );
  205. 			}
  206. 		});
  207. 	}
  208. }
  209.  
  210.  
  211.  function MouseScroll (e) {
  212.    gameLoop();
  213.    
  214.    	var mul = 1;
  215. 	if (!WEBKIT || alternative_sensitivity_multiplier)
  216. 		mul = 40;
  217.    	var x = e.deltaX*mul;
  218.    	var y = e.deltaY*mul;
  219.    
  220.    	if (mousemoved)
  221.     {
  222.       scrollfocus = UpdateFocus(x,y);
  223.       mousemoved = false;
  224.     }
  225. 	 //
  226.    
  227. 	 var positiondelta = 0;
  228. 	 var lastscrolltop = 0;
  229.  
  230. 	 var parentelement = ss$(scrollfocus).parent();
  231. 	 
  232. 	 var rolled = y;
  233. 	 
  234. 	 	var lastscrolltop = ss$(scrollfocus).scrollTop();
  235. 	 	
  236. 	 	if (!canscroll(scrollfocus, rolled))
  237. 		{
  238. 			if (!ss$(scrollfocus).is("html"))
  239. 			{
  240. 				scrollfocus = UpdateFocus(x,y);
  241.               return false;
  242. 			}
  243. 			else
  244. 			{
  245.               	
  246.               	//console.log("true");
  247. 				return false;
  248. 			}
  249. 		}
  250. 	 	else
  251. 		{
  252. 			e.preventDefault();
  253. 		}
  254.    	 positiondelta = scrollpositiondelta(scrollfocus);
  255.    
  256. 	 var direction = rolled/Math.abs(rolled);
  257. 	 
  258. 	 var positiondeltadelta = Math.round(rolled*sensitivity + Math.sqrt(Math.abs(positiondelta-rolled*sensitivity))*acceleration*rolled*0.09/sensitivity);
  259. 	 
  260. 	 positiondelta = positiondelta + positiondeltadelta;
  261.  
  262.   	 scrollpositiondelta(scrollfocus, positiondelta)
  263. 	 
  264. 	 UpdatePosition(ss$(scrollfocus));
  265. 	 
  266. 	 return true;
  267.  }
  268.  
  269.  function canscroll(element, dir)
  270. {
  271.   	//console.log(dir);
  272.   	if (dir>0)
  273.     {
  274.       dir = 1;
  275.     }
  276.   	if (dir<0)
  277.     {
  278.       dir = -1;
  279.     }
  280.   	var checkradius = 3; //pixels to try scrolling
  281.   
  282.   	var canscroll0 = false;
  283. 	var scrollable = ss$(element);
  284. 	var lastscrolltop = ss$(scrollable).scrollTop();
  285. 	ss$(scrollable).scrollTop(lastscrolltop+dir*checkradius);
  286. 	if (ss$(scrollable).scrollTop()!=lastscrolltop)
  287. 	{
  288. 		canscroll0 = true;
  289. 	}
  290.   	ss$(scrollable).scrollTop(lastscrolltop);
  291.   	//console.log("canscroll0: " + ss$(element).prev().prop('nodeName') + " : " + canscroll0);
  292. 	return canscroll0;
  293. }
  294.   
  295.   
  296. function scrollpositiondelta(element, newdelta)
  297. {
  298.   	var target = ss$(element);
  299.   	var delta = 0;
  300.   	if (newdelta!=undefined)
  301.     {
  302.       //console.log(dir);
  303.       var dir = 0;
  304.       if (newdelta>0)
  305.       {
  306.         dir = 1;
  307.       }
  308.       if (newdelta<0)
  309.       {
  310.         dir = -1;
  311.       }
  312. 	  //ss$(target)[0].setAttribute("positiondelta", newdelta );
  313. 	  ss$( target ).data( "positiondelta", newdelta );
  314.       delta = newdelta;
  315.     }
  316. 	else
  317.     {
  318.       //var olddelta = ss$(target)[0].getAttribute("positiondelta");
  319.       var olddelta = ss$( target ).data( "positiondelta" );
  320.       if (olddelta!=undefined)
  321.       {
  322.       	delta = olddelta;
  323.       }
  324.     }
  325.   	return delta;
  326. }
  327.  
  328. function UpdateFocus(x,y) {
  329. 	if (scrollfocus)
  330.       {
  331.         //ss$(scrollfocus)[0].setAttribute( "positiondelta",0 );
  332.         ss$(scrollfocus).stop();
  333.       }
  334. 	var dir = y;
  335. 	 	var nodelist = document.querySelectorAll( ":hover" );
  336. 		//ss$(nodelist).stop();
  337.   	//console.log(nodelist);
  338. 	 	if (WEBKIT)
  339.         {
  340.         	scrollfocus = ss$('body');
  341.         }
  342.   		else
  343.         {
  344.             scrollfocus = ss$('html');
  345.         }
  346.   		
  347. 	 	for (var i = nodelist.length-1; i >= 0 ; i--) { 
  348. 				//var parent = nodelist[i-1];
  349. 			  var newfocus = nodelist[i];
  350. 				if (DEBUG)
  351. 				{
  352. 					ss$(newfocus).css( "border", "1px solid blue" );
  353. 					//var debugtimer = setTimeout(function(){ ss$(newfocus).css( "border", "0px solid white" ); }, 1000);
  354. 				}
  355. 				//if (ss$(newfocus).hasScrollBar3() && hasScrollBarVisible(newfocus) && canscroll(newfocus, dir) && hasscrollbars(newfocus))
  356. 				if (canscroll(newfocus, dir) && hasscrollbars(newfocus))
  357. 				{
  358. 					scrollfocus = ss$(newfocus);
  359. 					return newfocus;
  360. 				}
  361.  		}
  362.  
  363. 	 return scrollfocus;
  364.  }
  365. 	
  366.   ss$('html').bind({
  367.     
  368. 	mousemove: function(e) {
  369.       mousemoved = true;
  370.     },
  371.     
  372.     mousedown: function(e) {
  373.       if (DEBUG)
  374.       {
  375.         console.log(scrollfocus);
  376.       }
  377.       if (scrollfocus)
  378.       {
  379.         scrollpositiondelta(scrollfocus, 0);
  380.         //ss$(scrollfocus).stop();
  381.       }
  382.       scrollfocus = UpdateFocus(0,0);
  383.       //console.log("click");
  384.     }
  385.   });
  386.  
  387. 	
  388.   
  389. document.documentElement.addEventListener("wheel", function(e){
  390.     MouseScroll(e);
  391.   //console.log("scrolling");
  392. });
  393.   
  394.  
  395.   //WEBKIT = 'webkitRequestAnimationFrame' in window;
  396.   WEBKIT = document.compatMode == 'CSS1Compat' || document.compatMode == "BackCompat";
  397.   
  398.   //console.log("window: " + window);
  399.   console.log("Smoothscroll initiated! Webkit: " + WEBKIT);
  400. }
  401.  
  402. var JQUERY = false;
  403. var OWNJQUERY = false;
  404. var OLDJQUERY = false;
  405.  
  406. var old$;
  407. var oldjQuery;
  408.  
  409. var ss$;
  410.  
  411. function jQueryVersion(temp$)
  412. {
  413.   if (typeof temp$ == 'undefined' || typeof temp$.fn == 'undefined' || typeof temp$.fn.jquery == 'undefined')
  414.   {
  415.     return 0;
  416.   }
  417.  
  418.   var versiontable = temp$.fn.jquery.split('.');
  419.   var version = 0;
  420.   for (var i = versiontable.length-1; i >= 0; i--) { 
  421.     var power = versiontable.length-i;
  422.     version += Math.pow(10,power-1)*versiontable[i];
  423.   }
  424.   return version;
  425. }
  426.  
  427.  
  428. function LoadConfig()
  429. {
  430.   smoothness = GM_getValue( 'smoothness', smoothness );
  431.   sensitivity = GM_getValue( 'sensitivity', sensitivity );
  432.   acceleration = GM_getValue( 'acceleration', acceleration );
  433.   baserefreshrate = GM_getValue( 'baserefreshrate', baserefreshrate );
  434.   //alternative_sesitivity_multiplier = GM_getValue( 'alternative_sesitivity_multiplier', alternative_sesitivity_multiplier );
  435.   console.log("Config for smoothscroll loaded!")
  436. }
  437.  
  438. function SaveConfig()
  439. {
  440.   GM_setValue( 'smoothness', document.getElementById('ss-smoothness').value)
  441.   GM_setValue( 'sensitivity', document.getElementById('ss-sensitivity').value)
  442.   GM_setValue( 'acceleration', document.getElementById('ss-acceleration').value)
  443.   GM_setValue( 'baserefreshrate', document.getElementById('ss-baserefreshrate').value)
  444.   //console.log(document.getElementById('ss-alternative_sesitivity_multiplier').checked)
  445.   console.log("Config for smoothscroll saved!")
  446. }
  447.  
  448. function InitConfigmenu()
  449. {
  450.   	console.log("Initiating smoothscroll config...");
  451.     var configbar = document.createElement('div');
  452.     configbar.setAttribute("id","ss-configbar");
  453.  	
  454.   	configbar.innerHTML = '<div style="display:block; width: 100%; height: auto; border: 0px solid #aaaaaa; background-color: grey;">Config page for smoothscroll (refresh page for changes to apply!) Made by: Creec Winceptor</div><div id="ss-config" style="margin:3px; display:block; width: auto; height: auto; border: 0px solid #554433;"><table style="width:auto;"><tr><td>Smoothness</td><td><input type="number" id="ss-smoothness" min="0" max="100" value="' + smoothness + '"></td><td> Smoothness factor value (how strong the smoothing effect is)</td></tr><tr><td>Sensitivity</td><td><input type="number" id="ss-sensitivity" min="0" max="100" value="' + sensitivity + '"></td><td> Scroll sensitivity (duh)</td></tr><tr><td>Acceleration</td><td><input type="number" id="ss-acceleration" min="0" max="100" value="' + acceleration + '"></td><td> Acceleration of continuous scroll action (saves your finger)</td></tr><tr><td>Refreshrate</td><td><input type="number" id="ss-baserefreshrate" min="1" max="100" value="' + baserefreshrate + '"></td><td>Refreshrate of scrollanimation (60Hz default)</td></tr></table></div><div style="width: 100%; height: auto; text-align: center; background-color: grey;"><input id="ss-save" type="button" value="Save config" style="width: 44%; height: auto; border: 0px solid #aaaaaa; margin: 3px"/><input id="ss-close" type="button" value="Close config" style="width: 44%; height: auto; border: 0px solid #aaaaaa; margin: 3px"/><div>';
  455.   	
  456.   	
  457.     var configparent = document.getElementsByTagName("body")[0];
  458.   	configbar.style.width = '100%';  
  459.   	configbar.style.display = 'none';  
  460.   	configbar.style.position = 'absolute';
  461. 	configbar.style.zIndex = '9999';
  462.   	configbar.style.backgroundColor = 'white';
  463.   
  464.   	configparent.insertBefore(configbar, configparent.childNodes[0]);
  465.   	
  466.     ss$("#ss-close").click(function() {
  467.       //ss$("#ss-config").animate({
  468.       //  height: '0'
  469.       //}, 100);
  470.       ss$("#ss-configbar").hide("slow");
  471.     });
  472.      ss$("#ss-save").click(function() {
  473.       SaveConfig();
  474.     });
  475.   
  476.   //ss$("#ss-configbar").hide();
  477. }
  478.  
  479. function ConfigSmoothscroll()
  480. {
  481.   if (typeof ss$ == 'undefined'){
  482.     alert("Smoothscroll is not running properly on this page!");
  483.     return;
  484.   }
  485.   //ss$("#ss-config").animate({
  486.     //height: '100px'
  487.   //}, 100);
  488.   ss$("#ss-configbar").show("slow");
  489.   ss$("html, body").animate({ scrollTop: 0 }, "slow");
  490.   console.log("opening config...");
  491. }
  492.  
  493. function LoadjQuery(loading)
  494. {
  495.   if (loading)
  496.   {
  497.     console.log("Waiting for jQuery...");
  498. 	if (typeof $ == 'undefined' || typeof jQuery == 'undefined' || jQueryVersion($)<minimal_jquery_version)
  499.     {
  500.       if (jquery_retry_count<jquery_retry_max)
  501.       {
  502.         jquery_retry_count++;
  503.         setTimeout(function() {
  504.             LoadjQuery(true);
  505.         }, 100);
  506.       }
  507.       else
  508.       {
  509.         console.log("Failed to load smoothscroll!");
  510.         if (typeof old$ != 'undefined') {
  511.           $ = old$;
  512.         }
  513.         if (typeof oldjQuery != 'undefined') {
  514.           jQuery = oldjQuery;
  515.         } 
  516.       }
  517.     }
  518.     else
  519.     {
  520.       ss$ = $;
  521.       ssjQuery = jQuery;
  522.       console.log("jQuery loaded!");
  523.       
  524.       if (typeof old$ != 'undefined') {
  525.         $ = old$;
  526.       }
  527.       if (typeof oldjQuery != 'undefined') {
  528.         jQuery = oldjQuery;
  529.       } 
  530.       console.log("Page jQuery version: " + jQueryVersion(old$));
  531.       console.log("Script jQuery version: " + jQueryVersion(ss$));
  532.       
  533.       InitSmoothscroll();
  534.     }
  535.   }
  536.   else
  537.   {
  538.     console.log("Loading own jQuery...");
  539. 	jquery_retry_count = 0;
  540.     
  541.     var filename = "https://code.jquery.com/jquery-2.2.3.js";
  542.     var fileref = document.createElement('script');
  543.     fileref.setAttribute("type","text/javascript");
  544.     fileref.setAttribute("src", filename);
  545.  
  546.     if (typeof fileref!="undefined")
  547.     {
  548.       var scriptparent = document.getElementsByTagName("head")[0];
  549.  
  550.       if (typeof scriptparent=="undefined")
  551.       {
  552.         var scriptparent = document.createElement('head');
  553.         document.getElementsByTagName("html")[0].appendChild(scriptparent);
  554.       }
  555.       scriptparent.appendChild(fileref);
  556.     }
  557.     
  558.     LoadjQuery(true);
  559.   }
  560. }
  561.  
  562.  
  563. function Init()
  564. {
  565.  
  566.   if (typeof ss$ == 'undefined' ) 
  567.   {
  568.     var sitejquery = !(typeof $ == 'undefined' || typeof jQuery == 'undefined');
  569.     if (sitejquery && jQueryVersion($)>=minimal_jquery_version) 
  570.     {
  571.       ss$ = $;
  572.       ssjQuery = jQuery;
  573.       console.log("Reusing page jQuery...");
  574.       console.log("Page jQuery version: " + jQueryVersion($));
  575.       InitSmoothscroll();
  576.     }
  577. 	else
  578.     {
  579.         if (typeof $ != 'undefined' && typeof old$ == 'undefined') 
  580.         {
  581.           old$ = $;
  582.         }
  583.         if (typeof jQuery != 'undefined' && typeof oldjQuery == 'undefined') 
  584.         {
  585.           oldjQuery = jQuery;
  586.         }
  587.       
  588.       	LoadjQuery(false);   	
  589.     }
  590.   }
  591. }
  592.  
  593. if (typeof ss$ == 'undefined'){
  594. 	console.log("Initiating smoothscroll...");
  595. 	Init();
  596. 	//InitSmoothscroll();	
  597. 	GM_registerMenuCommand("Configurate smoothscroll", ConfigSmoothscroll);
  598. }
  599. else
  600. {
  601.   console.log("Smoothscroll already loaded!");
  602. }