openwebrx-clone/htdocs/map.js

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(function(){
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var query = window.location.search.replace(/^\?/, '').split('&').map(function(v){
var s = v.split('=');
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var r = {};
r[s[0]] = s.slice(1).join('=');
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return r;
}).reduce(function(a, b){
return a.assign(b);
});
var expectedCallsign;
if (query.callsign) expectedCallsign = query.callsign;
var expectedLocator;
if (query.locator) expectedLocator = query.locator;
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var protocol = window.location.protocol.match(/https/) ? 'wss' : 'ws';
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var href = window.location.href;
var index = href.lastIndexOf('/');
if (index > 0) {
href = href.substr(0, index + 1);
}
href = href.split("://")[1];
href = protocol + "://" + href;
if (!href.endsWith('/')) {
href += '/';
}
var ws_url = href + "ws/";
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var map;
var markers = {};
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var rectangles = {};
var updateQueue = [];
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// reasonable default; will be overriden by server
var retention_time = 2 * 60 * 60 * 1000;
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var strokeOpacity = 0.8;
var fillOpacity = 0.35;
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var colorKeys = {};
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var colorScale = chroma.scale(['red', 'blue', 'green']).mode('hsl');
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var getColor = function(id){
if (!id) return "#000000";
if (!colorKeys[id]) {
var keys = Object.keys(colorKeys);
keys.push(id);
keys.sort();
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var colors = colorScale.colors(keys.length);
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colorKeys = {};
keys.forEach(function(key, index) {
colorKeys[key] = colors[index];
});
reColor();
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updateLegend();
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}
return colorKeys[id];
}
// when the color palette changes, update all grid squares with new color
var reColor = function() {
$.each(rectangles, function(_, r) {
var color = getColor(colorAccessor(r));
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r.setOptions({
strokeColor: color,
fillColor: color
});
});
}
var colorMode = 'byband';
var colorAccessor = function(r) {
switch (colorMode) {
case 'byband':
return r.band;
case 'bymode':
return r.mode;
}
};
$(function(){
$('#openwebrx-map-colormode').on('change', function(){
colorMode = $(this).val();
colorKeys = {};
reColor();
updateLegend();
});
});
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var updateLegend = function() {
var lis = $.map(colorKeys, function(value, key) {
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return '<li class="square"><span class="illustration" style="background-color:' + chroma(value).alpha(fillOpacity) + ';border-color:' + chroma(value).alpha(strokeOpacity) + ';"></span>' + key + '</li>';
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});
$(".openwebrx-map-legend .content").html('<ul>' + lis.join('') + '</ul>');
}
var processUpdates = function(updates) {
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if (typeof(AprsMarker) == 'undefined') {
updateQueue = updateQueue.concat(updates);
return;
}
updates.forEach(function(update){
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switch (update.location.type) {
case 'latlon':
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var pos = new google.maps.LatLng(update.location.lat, update.location.lon);
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var marker;
var markerClass = google.maps.Marker;
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var aprsOptions = {}
if (update.location.symbol) {
markerClass = AprsMarker;
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aprsOptions.symbol = update.location.symbol;
aprsOptions.course = update.location.course;
aprsOptions.speed = update.location.speed;
}
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if (markers[update.callsign]) {
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marker = markers[update.callsign];
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} else {
marker = new markerClass();
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marker.addListener('click', function(){
showMarkerInfoWindow(update.callsign, pos);
});
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markers[update.callsign] = marker;
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}
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marker.setOptions($.extend({
position: pos,
map: map,
title: update.callsign
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}, aprsOptions, getMarkerOpacityOptions(update.lastseen) ));
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marker.lastseen = update.lastseen;
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marker.mode = update.mode;
marker.band = update.band;
marker.comment = update.location.comment;
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// TODO the trim should happen on the server side
if (expectedCallsign && expectedCallsign == update.callsign.trim()) {
map.panTo(pos);
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showMarkerInfoWindow(update.callsign, pos);
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delete(expectedCallsign);
}
break;
case 'locator':
var loc = update.location.locator;
var lat = (loc.charCodeAt(1) - 65 - 9) * 10 + Number(loc[3]);
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var lon = (loc.charCodeAt(0) - 65 - 9) * 20 + Number(loc[2]) * 2;
var center = new google.maps.LatLng({lat: lat + .5, lng: lon + 1});
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var rectangle;
// the accessor is designed to work on the rectangle... but it should work on the update object, too
var color = getColor(colorAccessor(update));
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if (rectangles[update.callsign]) {
rectangle = rectangles[update.callsign];
} else {
rectangle = new google.maps.Rectangle();
rectangle.addListener('click', function(){
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showLocatorInfoWindow(this.locator, this.center);
});
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rectangles[update.callsign] = rectangle;
}
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rectangle.setOptions($.extend({
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strokeColor: color,
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strokeWeight: 2,
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fillColor: color,
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map: map,
bounds:{
north: lat,
south: lat + 1,
west: lon,
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east: lon + 2
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}
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}, getRectangleOpacityOptions(update.lastseen) ));
rectangle.lastseen = update.lastseen;
rectangle.locator = update.location.locator;
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rectangle.mode = update.mode;
rectangle.band = update.band;
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rectangle.center = center;
if (expectedLocator && expectedLocator == update.location.locator) {
map.panTo(center);
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showLocatorInfoWindow(expectedLocator, center);
delete(expectedLocator);
}
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break;
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}
});
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};
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var clearMap = function(){
var reset = function(callsign, item) { item.setMap(); };
$.each(markers, reset);
$.each(rectangles, reset);
markers = {};
rectangles = {};
};
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var reconnect_timeout = false;
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var connect = function(){
var ws = new WebSocket(ws_url);
ws.onopen = function(){
ws.send("SERVER DE CLIENT client=map.js type=map");
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reconnect_timeout = false
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};
ws.onmessage = function(e){
if (typeof e.data != 'string') {
console.error("unsupported binary data on websocket; ignoring");
return
}
if (e.data.substr(0, 16) == "CLIENT DE SERVER") {
console.log("Server acknowledged WebSocket connection.");
return
}
try {
var json = JSON.parse(e.data);
switch (json.type) {
case "config":
var config = json.value;
if (!map) $.getScript("https://maps.googleapis.com/maps/api/js?key=" + config.google_maps_api_key).done(function(){
var mapTypeId = config.google_maps_api_key ? 'roadmap' : 'OSM';
map = new google.maps.Map($('.openwebrx-map')[0], {
center: {
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lat: config.receiver_gps.lat,
lng: config.receiver_gps.lon
},
zoom: 5,
mapTypeId: mapTypeId
});
map.mapTypes.set("OSM", new google.maps.ImageMapType({
getTileUrl: function(coord, zoom) {
return "https://maps.wikimedia.org/osm-intl/" + zoom + "/" + coord.x + "/" + coord.y + ".png";
},
tileSize: new google.maps.Size(256, 256),
name: "OpenStreetMap",
maxZoom: 18
}));
$.getScript("static/lib/nite-overlay.js").done(function(){
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nite.init(map);
setInterval(function() { nite.refresh() }, 10000); // every 10s
});
$.getScript('static/lib/AprsMarker.js').done(function(){
processUpdates(updateQueue);
updateQueue = [];
});
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map.controls[google.maps.ControlPosition.LEFT_BOTTOM].push($(".openwebrx-map-legend")[0]);
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});
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retention_time = config.map_position_retention_time * 1000;
break;
case "update":
processUpdates(json.value);
break;
}
} catch (e) {
// don't lose exception
console.error(e);
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}
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};
ws.onclose = function(){
clearMap();
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if (reconnect_timeout) {
// max value: roundabout 8 and a half minutes
reconnect_timeout = Math.min(reconnect_timeout * 2, 512000);
} else {
// initial value: 1s
reconnect_timeout = 1000;
}
setTimeout(connect, reconnect_timeout);
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};
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window.onbeforeunload = function() { //http://stackoverflow.com/questions/4812686/closing-websocket-correctly-html5-javascript
ws.onclose = function () {};
ws.close();
};
/*
ws.onerror = function(){
console.info("websocket error");
};
*/
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};
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connect();
var infowindow;
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var showLocatorInfoWindow = function(locator, pos) {
if (!infowindow) infowindow = new google.maps.InfoWindow();
var inLocator = $.map(rectangles, function(r, callsign) {
return {callsign: callsign, locator: r.locator, lastseen: r.lastseen, mode: r.mode, band: r.band}
}).filter(function(d) {
return d.locator == locator;
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}).sort(function(a, b){
return b.lastseen - a.lastseen;
});
infowindow.setContent(
'<h3>Locator: ' + locator + '</h3>' +
'<div>Active Callsigns:</div>' +
'<ul>' +
inLocator.map(function(i){
var timestring = moment(i.lastseen).fromNow();
var message = i.callsign + ' (' + timestring + ' using ' + i.mode;
if (i.band) message += ' on ' + i.band;
message += ')';
return '<li>' + message + '</li>'
}).join("") +
'</ul>'
);
infowindow.setPosition(pos);
infowindow.open(map);
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};
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var showMarkerInfoWindow = function(callsign, pos) {
if (!infowindow) infowindow = new google.maps.InfoWindow();
var marker = markers[callsign];
var timestring = moment(marker.lastseen).fromNow();
var commentString = "";
if (marker.comment) {
commentString = '<div>' + marker.comment + '</div>';
}
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infowindow.setContent(
'<h3>' + callsign + '</h3>' +
'<div>' + timestring + ' using ' + marker.mode + ( marker.band ? ' on ' + marker.band : '' ) + '</div>' +
commentString
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);
infowindow.open(map, marker);
}
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var getScale = function(lastseen) {
var age = new Date().getTime() - lastseen;
var scale = 1;
if (age >= retention_time / 2) {
scale = (retention_time - age) / (retention_time / 2);
}
return Math.max(0, Math.min(1, scale));
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};
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var getRectangleOpacityOptions = function(lastseen) {
var scale = getScale(lastseen);
return {
strokeOpacity: strokeOpacity * scale,
fillOpacity: fillOpacity * scale
};
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};
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var getMarkerOpacityOptions = function(lastseen) {
var scale = getScale(lastseen);
return {
opacity: scale
};
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};
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// fade out / remove positions after time
setInterval(function(){
var now = new Date().getTime();
$.each(rectangles, function(callsign, m) {
var age = now - m.lastseen;
if (age > retention_time) {
delete rectangles[callsign];
m.setMap();
return;
}
m.setOptions(getRectangleOpacityOptions(m.lastseen));
});
$.each(markers, function(callsign, m) {
var age = now - m.lastseen;
if (age > retention_time) {
delete markers[callsign];
m.setMap();
return;
}
m.setOptions(getMarkerOpacityOptions(m.lastseen));
});
}, 1000);
})();