Source for "Google Maps UK Traffic Overlay
"
// Google Maps UK Traffic Overlay
// version 0.12 BETA!
// 15-07-2005
// Copyright (c) 2005, Michael Pritchard
// Released under the GPL license
// http://www.gnu.org/copyleft/gpl.html
//
// --------------------------------------------------------------------
//
// This is a Greasemonkey user script.
//
// To install, you need Greasemonkey: http://greasemonkey.mozdev.org/
// Then restart Firefox and revisit this script.
// Under Tools, there will be a new menu item to "Install User Script".
// Accept the default configuration and install.
//
// To uninstall, go to Tools/Manage User Scripts,
// select "Google Maps Fixed Map", and click Uninstall.
//
// Made thanks to http://diveintogreasemonkey.org/
//
// --------------------------------------------------------------------
//
// ==UserScript==
// @name Google Maps UK Traffic Overlay
// @namespace http://www.blueghost.co.uk/gmaps_uk_traffic.html
// @description Adds UK Traffic Overlay
// @include http://maps.google.*
// @include http://www.google.co.uk/maps*
// @include http://www.google.com/maps*
// @exclude http://maps.google.com/maps?output=js
// @exclude http://maps.google.co.uk/maps?output=js
// @exclude http://maps.google.com/mapfiles/maps.12.js
// ==/UserScript==
(function(){
var county_markers = [];
var map = _m.map; //gmap object
var tPlace;
var tLat;
var tLon;
var wMarker;
var traffic_setup = false;
var t_markers = [];
var wICon;
var widescreen = false;
var traffic_markers = [];
var traffic_data = [];
var traffic_start = [];
var traffic_end = [];
var active = false;
var moveListener;
var zoomListener;
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);
}
window.createTrafficMarker = function (lat, lon, html, src, type, start, stp, image, alat, alon) {
var icon = new GIcon();
icon.image = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/"+image+".png";
icon.shadow = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/weather/trans.png";
icon.iconSize = new GSize(19, 40);
icon.shadowSize = new GSize(1, 1);
icon.iconAnchor = new GPoint(6, 20);
icon.infoWindowAnchor = new GPoint(5, 1);
var point = new GPoint(lon, lat);
var marker = new GMarker(point,icon);
var info_html = '<div style="width: 200px; font-family:Verdana, Arial, Helvetica, sans-serif; font-size:small;"><img style="float:left" src="http://www.blueghost.pwp.blueyonder.co.uk/bg_site/'+type+'.png" alt="img" />'+html+'</div><strong>Source:'+src+'</strong>';
info_html += '<div>Started @ '+start+'</div><div>End @ '+stp+'</div>';
info_html += '<div class="weather_link"><a href="javascript:zoomTo('+lat+','+lon+', 3);">Zoom In</a></div>';
info_html += '<div class="weather_link"><a href="javascript:zoomTo('+alat+','+alon+', 7);">Zoom Out to Area</a></div>';
info_html += '<div class="weather_link"><a href="javascript:zoomOut();">Zoom Out Fully</a></div>';
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(info_html);
});
return marker;
}
window.createTrafficCountyMarker = function (html, title, lat, lon){
var point = new GPoint(lon,lat);
var marker = new GMarker(point,tICon);
var id = county_markers.length;
var info_html = document.createElement("div");
info_html.id = 'traffic_'+html+'';
info_html.className = 'weather_link';
info_html.innerHTML = '<a>'+title+'</a><br/><a href="javascript:goToTraffic(\''+html+'\', '+lat+', '+lon+', '+id+', \''+title+'\');" title="See Delays in '+title+'">Show Delays</a><br/><a href="javascript:zoomOut();" title="Show Delays in '+title+'">Zoom Out</a>';
county_markers.push(info_html);
GEvent.addListener(marker, "click", function() {
marker.openInfoWindow(county_markers[id]);
});
return marker;
}
window.setupTraffic = function (){
var lo = document.getElementById('toggle');
lo.innerHTML = "Loading Counties...";
//alert("Called sT");
//place backstage logo
wICon = new GIcon();
wICon.image = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/bbc.png";
wICon.shadow = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/weather/trans.png";
wICon.iconSize = new GSize(400, 30);
wICon.shadowSize = new GSize(1, 1);
wICon.iconAnchor = new GPoint(0, 0);
wICon.infoWindowAnchor = new GPoint(-5, -5);
//alert("got1");
//icon for each county
tICon = new GIcon();
tICon.image = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/mm_20_white.png";
tICon.shadow = "http://www.blueghost.pwp.blueyonder.co.uk/bg_site/mm_20_shadow.png";
tICon.iconSize = new GSize(12, 20);
tICon.shadowSize = new GSize(22, 20);
tICon.iconAnchor = new GPoint(0, 0);
tICon.infoWindowAnchor = new GPoint(-5, -5);
//alert("got2");
//add backstage logo
var bounds = map.getBoundsLatLng();
var width = bounds.maxX - bounds.minX;
var height = bounds.maxY - bounds.minY;
if (widescreen)
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
else
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
wMarker = new GMarker(point,wICon);
//map.addOverlay(wMarker);
//alert("got3");
//add each county
if (traffic_setup){
//alert("got4.1");
for(var i = 0; i< t_markers.length; i++)
map.addOverlay(t_markers[i]);
var lo = document.getElementById('toggle');
lo.innerHTML = "Loaded Counties";
}else{
//alert("got4.2");
var tmp_mkrs = [];
//var request = new XMLHttpRequest();
//var url = "http://bbc.blueghost.co.uk/includes/travel_new.php";
GM_xmlhttpRequest({
method: 'GET',
url: 'http://bbc.blueghost.co.uk/travel_data/locations.xml',
headers: {
'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey/0.3',
'Accept': 'application/atom+xml,application/xml,text/xml',
},
onreadystatechangeCallback: function(responseDetails) {
//alert("Waiting at :"+responseDetails.readyState);
},
onload: function(responseDetails) {
//alert("Got XML");
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(responseDetails.responseText, "application/xml");
var markers = xmlDoc.documentElement.getElementsByTagName("t_alert");
for (var i=0; i< markers.length ; i++){
var lat = markers[i].getAttribute("lat");
var lon = markers[i].getAttribute("lon");
var marker = createTrafficCountyMarker(markers[i].getAttribute("location"), markers[i].getAttribute("title"), lat, lon);
map.addOverlay(marker);
t_markers.push(marker);
}
var lo = document.getElementById('toggle');
lo.innerHTML = "Loaded Counties";
//alert("Added markers");
}
});
//alert("got5");
traffic_setup = true;
}
//alert("got6");
//onmove for backstage logo
moveListener = GEvent.addListener(map, "move", function() {
map.removeOverlay(wMarker);
var bounds = map.getBoundsLatLng();
var width = bounds.maxX - bounds.minX;
var height = bounds.maxY - bounds.minY;
if (widescreen)
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
else
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
wMarker = new GMarker(point,wICon);
map.addOverlay(wMarker);
GEvent.addListener(wMarker, "click", function() {
var l_text = "<div class=\"weather_link\">supported by <a href=\"http://backstage.bbc.co.uk\" target=\"_blank\">backstage.bbc.co.uk</a></div>";
wMarker.openInfoWindowHtml(l_text);
});
});
//alert("got7");
//onzoom for backstage logo
zoomListener = GEvent.addListener(map, "zoom", function() {
map.removeOverlay(wMarker);
var bounds = map.getBoundsLatLng();
var width = bounds.maxX - bounds.minX;
var height = bounds.maxY - bounds.minY;
if (widescreen)
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
else
var point = new GPoint(bounds.maxX-(width/1.5), bounds.maxY-(height*0.9));
wMarker = new GMarker(point,wICon);
map.addOverlay(wMarker);
GEvent.addListener(wMarker, "click", function() {
var l_text = "<div class=\"weather_link\">supported by <a href=\"http://backstage.bbc.co.uk\" target=\"_blank\">backstage.bbc.co.uk</a></div>";
wMarker.openInfoWindowHtml(l_text);
});
});
//alert("got8");
//onclick for backstage logo
GEvent.addListener(wMarker, "click", function() {
var l_text = "<div class=\"weather_link\">supported by <a href=\"http://backstage.bbc.co.uk\" target=\"_blank\">backstage.bbc.co.uk</a></div>";
wMarker.openInfoWindowHtml(l_text);
});
//alert("got9");
map.addOverlay(wMarker);
}
window.zoomTo = function (lat, lon, size){
var p = new GPoint(lon,lat);
map.centerAndZoom(p, size);
}
window.goToTraffic = function (loc, lat, lon, id, title){
county_markers[id].innerHTML = '<a>'+title+'</a><br/><a href="javascript:removeTraffic(\''+loc+'\', '+lat+', '+lon+', '+id+', \''+title+'\');" title="Hide Delays in '+title+'">Hide Delays</a><br/><a href="javascript:zoomOut();" title="Show Delays in '+title+'">Zoom Out</a>';
var point = new GPoint(lon,lat);
map.centerAndZoom(point, 7);
tPlace = loc;
tLat = lat;
tLon = lon;
reloadTraffic();
}
window.removeTraffic = function (loc, lat, lon, id, title){
var index = 0;
for (var i = 0; i < traffic_data.length; i++){
if (traffic_data[i] == loc){
index = i;
i = traffic_data.length + 1;
}
}
for (var start = traffic_start[index]; start < traffic_end[index]; start++)
map.removeOverlay(traffic_markers[start]);
county_markers[id].innerHTML = '<a>'+title+'</a><br/><a href="javascript:goToTraffic(\''+loc+'\', '+lat+', '+lon+', '+id+', \''+title+'\');" title="Show Delays in '+title+'">Show Delays</a><br/><a href="javascript:zoomOut();" title="Show Delays in '+title+'">Zoom Out</a>';
}
window.reloadTraffic = function (){
var lo = document.getElementById('toggle');
lo.innerHTML = "Loading Traffic Data for "+tPlace+"...";
var index = -1;
for (var i = 0; i < traffic_data.length; i++){
if (traffic_data[i] == tPlace){
index = i;
i = traffic_data.length + 1;
}
}
if (index != -1){
for (var start = traffic_start[index]; start < traffic_end[index]; start++)
map.addOverlay(traffic_markers[start]);
var lo = document.getElementById('toggle');
lo.innerHTML = "Loaded Traffic Data";
}else{
traffic_data.push(tPlace);
traffic_start.push(traffic_markers.length);
GM_xmlhttpRequest({
method: 'GET',
url: 'http://bbc.blueghost.co.uk/includes/travel_new.php?area='+tPlace,
headers: {
'User-agent': 'Mozilla/4.0 (compatible) Greasemonkey/0.3',
'Accept': 'application/atom+xml,application/xml,text/xml',
},
onreadystatechangeCallback: function(responseDetails) {
//alert("Waiting at :"+responseDetails.readyState);
},
onload: function(responseDetails) {
//alert("Got XML");
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(responseDetails.responseText, "application/xml");
var markers = xmlDoc.documentElement.getElementsByTagName("t_alert");
for (var i = 0; i < markers.length; i++) {
var places = 0;
var lat = markers[i].getAttribute("lat");
var lon = markers[i].getAttribute("lon");
var logo = markers[i].getAttribute("severity");
var marker = createTrafficMarker(lat, lon , markers[i].getAttribute("summary"), markers[i].getAttribute("src"), markers[i].getAttribute("type"), markers[i].getAttribute("start"), markers[i].getAttribute("stop"), logo, tLat, tLon);
map.addOverlay(marker);
traffic_markers.push(marker);
}
traffic_end.push(traffic_markers.length);
var lo = document.getElementById('toggle');
lo.innerHTML = "Loaded Traffic Data";
}
});
}
}
/**
* Resets all traffic markers to say "Show Delays"
*/
window.resetTraffic = function (){
//not yet implemented
}
window.removeAllTraffic = function (){
//remove alert overlays
for (var i = 0; i < traffic_markers.length; i++)
map.removeOverlay(traffic_markers[i]);
//remove county overlay
for (var i = 0; i < t_markers.length; i++)
map.removeOverlay(t_markers[i]);
//backstage logo
map.removeOverlay(wMarker);
//reset event listeners
//onmove for backstage logo
GEvent.removeListener(moveListener);
//onzoom for backstage logo
GEvent.removeListener(zoomListener);
}
window.setActive = function(){
var a = document.getElementById('activeSetter');
if (active){
active = false;
a.innerHTML = "Load UK Traffic";
a.title = "Load UK Traffic Data";
removeAllTraffic();
}else{
active = true;
a.innerHTML = "Hide UK Traffic";
a.title = "Hide UK Traffic Data";
setupTraffic();
}
}
window.zoomOut = function(){
map.centerAndZoom(cen, 11);
}
addGlobalStyle('.weather_link { vertical-align:text-bottom; text-align: center;font-weight:bold; font-family:Geneva, Arial, Helvetica, sans-serif;font-size:small; }');
addGlobalStyle('.weather_link a { text-decoration:none; }');
addGlobalStyle('.weather_link a:hover { text-decoration:underline; }');
if (screen.width == '1280' && screen.height == '800')
widescreen = true;
if (screen.width == '1280' && screen.height == '768')
widescreen = true;
var cen = new GPoint(-2.52,52.7);
var a = document.createElement("a");
a.href = "javascript:setActive()";
a.id = "activeSetter";
a.innerHTML = "Load UK Traffic";
a.title = "Load UK Traffic Data";
var d = document.createElement("span");
d.innerHTML = " ";
var dirs = document.getElementById('directions');
dirs.parentNode.insertBefore(d, dirs.nextSibling);
d.parentNode.insertBefore(a, d.nextSibling);
})()
