Source for "Linkoder (QRcode)"

By Vorn
Has no other scripts. 

// ==UserScript==
// @name           Linkoder
// @namespace      vornstar.net
// @description    Displays image barcodes for links on a page
// @include        *
// @exclude        
// ==/UserScript==

/*** DISCLAIMER ***
This script is for PERSONAL USE ONLY, and is provided on an AS IS basis, to be used AT YOUR OWN RISK.
This script is subject to copyright and must be distributed with this disclaimer intact.
By using this script you agree to the terms and conditions of the service(s) provided by all relevant 3rd parties.

DO NOT OVERUSE OR ABUSE THIS SCRIPT (unless you're hosting your own encoder)

READ THIS FIRST before using the nokia encoder
http://mobilecodes.nokia.com/terms.htm
*******************/

// comments to vornstar at(@) gmail

// N.B. IE support untested (but _should_ work with v6+) - tested on firefox 2.0.13

// $Revision: 76 $ 
// $Date: 2008-04-01 16:30:58 +1100 (Tue, 01 Apr 2008) $

/* 
TODO:
- avoid popup appearing off-screen
- integrate JS encoder (removing need for web based encoder)
- support encoding selected text snippet
- test/fix ie
*/

var linkoderInited = false;
var linkoderTimer = null;

function showBarcode(evt) {
	killTimer();
    var src = (evt.target ? evt.target : evt.srcElement);
    var el = document.getElementById('linkoderPopup');
    var img = document.getElementById('linkoderImg');
    var x = 10;
    var y = 10;
    if (evt.pageX) {
        x = evt.pageX;
        y = evt.pageY;
    } else if (evt.clientX) {
        x = evt.clientX;
        y = evt.clientY;
    }
    if (el && img && x && src.href) {
        el.style.visibility = '';
        var left = x;
       	var top = y + 10;
        el.style.left = left.toString() + 'px';
        el.style.top = top.toString() + 'px';
        el.style.zIndex = '9';

        /*
        Choose one of...
            DataMatrix:
            var dst = 'http://mobilecodes.nokia.com/dm?BARCODE=' + escape(src.href) + '&X=0.18&name=&type=link&MODE=TEXT&a=view';
            QR:
            var dst = 'http://mobilecodes.nokia.com/qr?DATA=' + escape(src.href) + '&MODULE_SIZE=4&name=&MARGIN=2&ENCODING=BYTE&type=link&MODE=TEXT&a=view';
            DIY:
            var dst = 'http://localhost/mycode?code=' + escape(src.href);
        */
        var dst = 'http://mobilecodes.nokia.com/qr?DATA=' + escape(src.href) + '&MODULE_SIZE=4&name=&MARGIN=2&ENCODING=BYTE&type=link&MODE=TEXT&a=view';
       
        img.src = dst;
    }
}

function hideBarcode() {
    var el = document.getElementById('linkoderPopup');
    var img = document.getElementById('linkoderImg');
    if (el) {
        el.style.visibility = 'hidden';
        el.style.zIndex = '-1';
        el.style.left = '-999px';
        if (img) { img.src = ''; }
    }
}

function evtMouseOut() {
	killTimer();
	linkoderTimer = window.setTimeout(hideBarcode,1000);
}

function killTimer() {
	if (linkoderTimer) {
		window.clearTimeout(linkoderTimer);
	}
}

function init() {
	if (!linkoderInited) {
		var agreed = GM_getValue('linkoderAgreed');
		if (!agreed) {
			var result = prompt("Do not overuse or abuse this script.\nEnsure you have read and agree to the t&c at:\nhttp://mobilecodes.nokia.com/terms.htm\nType 'Yes' to indicate that you have agreed to these terms and conditions");
			if (result.toLowerCase() == 'yes')
			{
				GM_setValue('linkoderAgreed',true);
				agreed = true;
			}
		}
		if (agreed) {
		    for (var i = 0; i < document.links.length; i++ ) {
		        var el = document.links[i];
		        if (el.href && el.href.length) {
			        if (el.addEventListener){
			            el.addEventListener('mouseover', showBarcode, false);
			            el.addEventListener('mouseout', evtMouseOut, false);
			        } else if (el.attachEvent){
			            el.attachEvent('onmouseover', showBarcode);
			            el.attachEvent('onmouseout', evtMouseOut);
			        }
		        }
		    }
		    var pDiv = document.createElement('div');
		    pDiv.id = 'linkoderPopup';
		    pDiv.style.visibility = 'hidden';
		    pDiv.style.position = 'absolute';
		    pDiv.style.left = '-999px';
		    pDiv.style.zIndex = '-1';
		    pDiv.style.backgroundColor = '#ffffff';
		    pDiv.style.padding = '5px';
		    var img = document.createElement('img');
		    img.src = '';
		    img.id = 'linkoderImg';
		    pDiv.appendChild(img);
		    document.body.appendChild(pDiv);
			if (el.addEventListener){
			    pDiv.addEventListener('mouseover', killTimer, false);
			    pDiv.addEventListener('mouseout', evtMouseOut, false);
			} else if (el.attachEvent){
			    pDiv.attachEvent('onmouseover', killTimer);
			    pDiv.attachEvent('onmouseout', evtMouseOut);
			}
		    linkoderInited = true;
		}
	}
}

GM_registerMenuCommand("Linkode this page", init);