openwebrx-clone/htdocs/map.js

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$(function(){
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var query = new URLSearchParams(window.location.search);
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var expectedCallsign;
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if (query.has('callsign')) {
expectedCallsign = Object.fromEntries(query.entries());
}
var expectedLocator;
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if (query.has('locator')) expectedLocator = query.get('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 = {};
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var receiverMarker;
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;
var callsign_url = null;
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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);
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keys.sort(function(a, b) {
var pa = parseFloat(a);
var pb = parseFloat(b);
if (isNaN(pa) || isNaN(pb)) return a.localeCompare(b);
return pa - pb;
});
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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 = {};
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filterRectangles(allRectangles);
reColor();
updateLegend();
});
});
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var updateLegend = function() {
var lis = $.map(colorKeys, function(value, key) {
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// fake rectangle to test if the filter would match
var fakeRectangle = Object.fromEntries([[colorMode.slice(2), key]]);
var disabled = rectangleFilter(fakeRectangle) ? '' : ' disabled';
return '<li class="square' + disabled + '" data-selector="' + key + '"><span class="illustration" style="background-color:' + chroma(value).alpha(fillOpacity) + ';border-color:' + chroma(value).alpha(strokeOpacity) + ';"></span>' + key + '</li>';
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});
$(".openwebrx-map-legend .content").html('<ul>' + lis.join('') + '</ul>');
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};
var shallowEquals = function(obj1, obj2) {
// basic shallow object comparison
return Object.entries(obj1).sort().toString() === Object.entries(obj2).sort().toString();
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}
var processUpdates = function(updates) {
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if (typeof(AprsMarker) == 'undefined') {
updateQueue = updateQueue.concat(updates);
return;
}
updates.forEach(function(update){
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var key = sourceToKey(update.source);
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switch (update.location.type) {
case 'latlon':
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var pos = new google.maps.LatLng(update.location.lat, update.location.lon);
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var marker;
var markerClass = google.maps.Marker;
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var aprsOptions = {}
if (update.location.symbol) {
markerClass = AprsMarker;
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aprsOptions.symbol = update.location.symbol;
aprsOptions.course = update.location.course;
aprsOptions.speed = update.location.speed;
}
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if (markers[key]) {
marker = markers[key];
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} else {
marker = new markerClass();
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marker.addListener('click', function(){
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showMarkerInfoWindow(update.source, pos);
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});
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markers[key] = marker;
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}
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marker.setOptions($.extend({
position: pos,
map: map,
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title: sourceToString(update.source)
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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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if (expectedCallsign && shallowEquals(expectedCallsign, update.source)) {
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map.panTo(pos);
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showMarkerInfoWindow(update.source, pos);
expectedCallsign = false;
}
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if (infowindow && infowindow.source && shallowEquals(infowindow.source, update.source)) {
showMarkerInfoWindow(infowindow.source, pos);
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}
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[key]) {
rectangle = rectangles[key];
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} else {
rectangle = new google.maps.Rectangle();
rectangle.addListener('click', function(){
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showLocatorInfoWindow(this.locator, this.center);
});
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rectangles[key] = rectangle;
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}
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rectangle.source = update.source;
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rectangle.lastseen = update.lastseen;
rectangle.locator = update.location.locator;
rectangle.mode = update.mode;
rectangle.band = update.band;
rectangle.center = center;
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rectangle.setOptions($.extend({
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strokeColor: color,
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strokeWeight: 2,
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fillColor: color,
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map: rectangleFilter(rectangle) ? map : undefined,
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bounds:{
north: lat,
south: lat + 1,
west: lon,
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east: lon + 2
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}
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}, getRectangleOpacityOptions(update.lastseen) ));
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if (expectedLocator && expectedLocator === update.location.locator) {
map.panTo(center);
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showLocatorInfoWindow(expectedLocator, center);
expectedLocator = false;
}
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if (infowindow && infowindow.locator && infowindow.locator === update.location.locator) {
showLocatorInfoWindow(infowindow.locator, center);
}
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break;
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}
});
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};
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var clearMap = function(){
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var reset = function(_, item) { item.setMap(); };
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$.each(markers, reset);
$.each(rectangles, reset);
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receiverMarker.setMap();
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markers = {};
rectangles = {};
};
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var reconnect_timeout = false;
var config = {}
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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") {
return
}
try {
var json = JSON.parse(e.data);
switch (json.type) {
case "config":
Object.assign(config, json.value);
if ('receiver_gps' in config) {
var receiverPos = {
lat: config.receiver_gps.lat,
lng: config.receiver_gps.lon
};
if (!map) $.getScript("https://maps.googleapis.com/maps/api/js?key=" + config.google_maps_api_key).done(function(){
map = new google.maps.Map($('.openwebrx-map')[0], {
center: receiverPos,
zoom: 5,
});
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$.getScript("static/lib/nite-overlay.js").done(function(){
nite.init(map);
setInterval(function() { nite.refresh() }, 10000); // every 10s
});
$.getScript('static/lib/AprsMarker.js').done(function(){
processUpdates(updateQueue);
updateQueue = [];
});
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var $legend = $(".openwebrx-map-legend");
setupLegendFilters($legend);
map.controls[google.maps.ControlPosition.LEFT_BOTTOM].push($legend[0]);
if (!receiverMarker) {
receiverMarker = new google.maps.Marker();
receiverMarker.addListener('click', function() {
showReceiverInfoWindow(receiverMarker);
});
}
receiverMarker.setOptions({
map: map,
position: receiverPos,
title: config['receiver_name'],
config: config
});
}); else {
receiverMarker.setOptions({
map: map,
position: receiverPos,
config: config
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});
}
}
if ('receiver_name' in config && receiverMarker) {
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receiverMarker.setOptions({
title: config['receiver_name']
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});
}
if ('map_position_retention_time' in config) {
retention_time = config.map_position_retention_time * 1000;
}
if ('callsign_url' in config) {
callsign_url = config['callsign_url'];
}
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break;
case "update":
processUpdates(json.value);
break;
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case 'receiver_details':
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$('.webrx-top-container').header().setDetails(json['value']);
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break;
default:
console.warn('received message of unknown type: ' + json['type']);
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}
} 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 getInfoWindow = function() {
if (!infowindow) {
infowindow = new google.maps.InfoWindow();
google.maps.event.addListener(infowindow, 'closeclick', function() {
delete infowindow.locator;
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delete infowindow.source;
});
}
delete infowindow.locator;
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delete infowindow.source;
return infowindow;
};
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var sourceToKey = function(source) {
// special treatment for special entities
// not just for display but also in key treatment in order not to overlap with other locations sent by the same callsign
if ('item' in source) return source['item'];
if ('object' in source) return source['object'];
var key = source.callsign;
if ('ssid' in source) key += '-' + source.ssid;
return key;
};
// we can reuse the same logic for displaying and indexing
var sourceToString = sourceToKey;
var linkifySource = function(source) {
var callsignString = sourceToString(source);
if (callsign_url == null || callsign_url === '')
return callsignString;
else
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return '<a target="callsign_info" href="' +
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callsign_url.replaceAll('{}', source.callsign) +
'">' + callsignString + '</a>';
};
var distanceKm = function(p1, p2) {
// Earth radius in km
var R = 6371.0;
// Convert degrees to radians
var rlat1 = p1.lat() * (Math.PI/180);
var rlat2 = p2.lat() * (Math.PI/180);
// Compute difference in radians
var difflat = rlat2-rlat1;
var difflon = (p2.lng()-p1.lng()) * (Math.PI/180);
// Compute distance
d = 2 * R * Math.asin(Math.sqrt(
Math.sin(difflat/2) * Math.sin(difflat/2) +
Math.cos(rlat1) * Math.cos(rlat2) * Math.sin(difflon/2) * Math.sin(difflon/2)
));
return Math.round(d);
};
var infowindow;
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var showLocatorInfoWindow = function(locator, pos) {
var infowindow = getInfoWindow();
infowindow.locator = locator;
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var inLocator = Object.values(rectangles).filter(rectangleFilter).filter(function(d) {
return d.locator === locator;
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}).sort(function(a, b){
return b.lastseen - a.lastseen;
});
var distance = receiverMarker?
" at " + distanceKm(receiverMarker.position, pos) + " km" : "";
infowindow.setContent(
'<h3>Locator: ' + locator + distance + '</h3>' +
'<div>Active Callsigns:</div>' +
'<ul>' +
inLocator.map(function(i){
var timestring = moment(i.lastseen).fromNow();
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var message = linkifySource(i.source) + ' (' + 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(source, pos) {
var infowindow = getInfoWindow();
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infowindow.source = source;
var marker = markers[sourceToKey(source)];
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var timestring = moment(marker.lastseen).fromNow();
var commentString = "";
var distance = "";
if (marker.comment) {
commentString = '<div>' + marker.comment + '</div>';
}
if (receiverMarker) {
distance = " at " + distanceKm(receiverMarker.position, marker.position) + " km";
}
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infowindow.setContent(
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'<h3>' + linkifySource(source) + distance + '</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 showReceiverInfoWindow = function(marker) {
var infowindow = getInfoWindow()
infowindow.setContent(
'<h3>' + marker.config['receiver_name'] + '</h3>' +
'<div>Receiver location</div>'
);
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();
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Object.values(rectangles).forEach(function(m){
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var age = now - m.lastseen;
if (age > retention_time) {
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delete rectangles[sourceToKey(m.source)];
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m.setMap();
return;
}
m.setOptions(getRectangleOpacityOptions(m.lastseen));
});
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Object.values(markers).forEach(function(m) {
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var age = now - m.lastseen;
if (age > retention_time) {
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delete markers[sourceToKey(m.source)];
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m.setMap();
return;
}
m.setOptions(getMarkerOpacityOptions(m.lastseen));
});
}, 1000);
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var rectangleFilter = allRectangles = function() { return true; };
var filterRectangles = function(filter) {
rectangleFilter = filter;
$.each(rectangles, function(_, r) {
r.setMap(rectangleFilter(r) ? map : undefined);
});
};
var setupLegendFilters = function($legend) {
$content = $legend.find('.content');
$content.on('click', 'li', function() {
var $el = $(this);
$lis = $content.find('li');
if ($lis.hasClass('disabled') && !$el.hasClass('disabled')) {
$lis.removeClass('disabled');
filterRectangles(allRectangles);
} else {
$el.removeClass('disabled');
$lis.filter(function() {
return this != $el[0]
}).addClass('disabled');
var key = colorMode.slice(2);
var selector = $el.data('selector');
filterRectangles(function(r) {
return r[key] === selector;
});
}
});
}
});