There are 1 previous version of this script.
// ==UserScript==
// @name mouseless-autoscroll
// @namespace Utopiah
// @description autoscroll without using your hands (keep them for the coffee cup ;)
// @include *
// @exclude *://mail.google.com/mail/*
// @require http://ecmanaut.googlecode.com/svn/trunk/lib/gm/$x$X.js
// ==/UserScript==
// the require script is a part of ecmanaut grand project
// to re-organize the world starting with the annoying interface to the DOM API
/*
* Script homepage : http://userscripts.org/forums/1/topics/2150
* To do : check the homepage
*/
//=================================== Configuration =======================================
var SPEED_STEP=1; // step size for increase and decrease of speed
var BASE_TIME=6; // default scrolling speed in speed-step
var MAX_SLOWEST_SPEED=10; // define the slowest speed-step
var speed=GM_getValue("speed", BASE_TIME); // load last speed value
var timer = null; // handle for the periodic call to the scrolling function
//=================================== Core =============================================
// loop as fast as required, don't loop when speed is inferior to the small timestep
function reset_timer() {
if (timer) { window.clearTimeout(timer); };
if (speed >= MAX_SLOWEST_SPEED) timer = null;
else timer = window.setInterval(scroll, Math.exp(speed));
}
// actually scroll the window one pixel down
function scroll () { window.scrollBy(0, 1); };
// Reminder : use window.scrollBy(0, -1) to scroll up
// call the scrolling loop
reset_timer();
//=================================== Interface =========================================
function scroll_faster () {
if(speed>=SPEED_STEP){ speed-=SPEED_STEP; }
// else { find a way to display to the user we reached the maximum speed... any idea ? }
hideallbuttons();
// instead each action should individually self-clean their picture with a setTimeout
// that would need 5 different functions because of the setTimeout Greasemonkey specificity
// (especially since we can't specify parameters within setTimeout call in GM afaik)
var button = document.getElementById('button_faster'); button.style.visibility="visible";
setTimeout(hideallbuttons,2000);
reset_timer();
};
function scroll_slower () {
if(speed>=MAX_SLOWEST_SPEED-SPEED_STEP) { speed=MAX_SLOWEST_SPEED; scroll_pause(); return;}
if(speed<MAX_SLOWEST_SPEED-SPEED_STEP) { speed+=SPEED_STEP; }
hideallbuttons();
var button = document.getElementById('button_slower'); button.style.visibility="visible";
setTimeout(hideallbuttons,2000);
reset_timer();
};
function scroll_start () {
hideallbuttons();
var button = document.getElementById('button_start'); button.style.visibility="visible";
setTimeout(hideallbuttons,2000);
reset_timer();
};
function scroll_pause () {
// should use var with local page scope, NOT global GM getValue
speed=MAX_SLOWEST_SPEED; // does not use a specific pause var/const, could be interesting to make the distinction
hideallbuttons();
var button = document.getElementById('button_pause'); button.style.visibility="visible";
reset_timer();
};
function scroll_reset () {
speed=BASE_TIME;
hideallbuttons();
var button = document.getElementById('button_reset'); button.style.visibility="visible";
setTimeout(hideallbuttons,2000);
reset_timer();
};
function hideallbuttons() {
var pauseButtonElement = document.getElementById('button_pause'); pauseButtonElement.style.visibility="hidden";
var startButtonElement = document.getElementById('button_start'); startButtonElement.style.visibility="hidden";
var fasterButtonElement = document.getElementById('button_faster'); fasterButtonElement.style.visibility="hidden";
var slowerButtonElement = document.getElementById('button_slower'); slowerButtonElement.style.visibility="hidden";
var resetButtonElement = document.getElementById('button_reset'); resetButtonElement.style.visibility="hidden";
};
GM_registerMenuCommand( "Start scrolling", scroll_start, "s", "", "t" );
GM_registerMenuCommand( "Pause scrolling", scroll_pause, "p", "", "p" );
GM_registerMenuCommand( "Scroll faster", scroll_faster, "l", "", "f" );
GM_registerMenuCommand( "Scroll slower", scroll_slower, "k", "", "s" );
GM_registerMenuCommand( "Reset scrolling speed", scroll_reset, "r", "", "r" );
function addGlobalStyle(css) {
var head, style;
head = document.getElementsByTagName('head')[0];
if (!head) { return; }
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = css;
head.appendChild(style);
}
addGlobalStyle( 'div#scrollercontroller { position:fixed; bottom:0; right:0; }' +
'div#scrollercontroller { visibility:visible; }'+
'img.button { visibility:hidden; position:fixed; bottom:0; right:0; } '
);
// seems to be problematic on first load....
var button_pic_start = 'http://www.flvplayer4free.com/images/play.png';
var button_pic_pause = 'http://www.flvplayer4free.com/images/pause.png';
var button_pic_slower = 'http://www.flvplayer4free.com/images/rewind.png';
var button_pic_faster = 'http://www.flvplayer4free.com/images/fast-forward.png';
var button_pic_reset = 'http://www.flvplayer4free.com/images/toggle-repeat.png';
var scrollercontroller = document.createElement('div');
scrollercontroller.id = 'scrollercontroller';
var pauseButtonElement = scrollercontroller.appendChild(document.createElement('img'));
pauseButtonElement.className = 'button'; pauseButtonElement.id = 'button_pause'; pauseButtonElement.src = button_pic_pause;
var playButtonElement = scrollercontroller.appendChild(document.createElement('img'));
playButtonElement.className = 'button'; playButtonElement.id = 'button_start'; playButtonElement.src = button_pic_start;
var slowerButtonElement = scrollercontroller.appendChild(document.createElement('img'));
slowerButtonElement.className = 'button'; slowerButtonElement.id = 'button_slower'; slowerButtonElement.src = button_pic_slower;
var fasterButtonElement = scrollercontroller.appendChild(document.createElement('img'));
fasterButtonElement.className = 'button'; fasterButtonElement.id = 'button_faster'; fasterButtonElement.src = button_pic_faster;
var resetButtonElement = scrollercontroller.appendChild(document.createElement('img'));
resetButtonElement.className = 'button'; resetButtonElement.id = 'button_reset'; resetButtonElement.src = button_pic_reset;
// Display the visual interface
document.body.insertBefore(scrollercontroller, document.body.firstChild);
function shortcuts (e){
switch(e.charCode)
{
case "s".charCodeAt(0) : scroll_start(); break;
case "p".charCodeAt(0) : scroll_pause(); break;
case "l".charCodeAt(0) : scroll_faster(); break;
case "k".charCodeAt(0) : scroll_slower(); break;
case "r".charCodeAt(0) : scroll_reset(); break;
}
};
function registerShortcuts() {
window.addEventListener("keypress", shortcuts, true);
};
function unregisterShortcuts() {
window.removeEventListener("keypress", shortcuts, true);
};
registerShortcuts();
$x('//input | //textarea | //select').forEach(registerListener);
function registerListener(node) {
node.addEventListener("mouseover", function() {
unregisterShortcuts();
scroll_pause(); }, true);
node.addEventListener("mouseout", function() {
scroll_start ();
registerShortcuts();
}, true);
}
//=================================== Indirect interface ====================================
/* does it loop ?
var was_scrolling_before_blur=true;
window.addEventListener("blur", function (e) {
if (speed<MAX_SLOWEST_SPEED) { was_scrolling_before_blur=true; }
else { was_scrolling_before_blur=false; }
scroll_pause();
}, true);
window.addEventListener("focus", focusHandler, true);
function focusHandler ( e ) {
alert('on focus');
if (was_scrolling_before_blur) { scroll_start(); }
window.removeEventListener("focus", focusHandler); window.addEventListener("blur", blurHandler, true); }
*/
// <choop> where blurHandler does the same as focusHandler, but backwards
//<choop> basically removing and adding the event listeners so they don't keep triggering and crash firefox
