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mapboxwms.html
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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title></title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='node_modules/proj4/dist/proj4-src.js'></script>
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.37.0/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.37.0/mapbox-gl.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; font-family: Arial, Helvetica, sans-serif;}
#map { position:absolute; top:0; bottom:0; width:100%; }
#infocontainer { position: absolute; top: 10px; left: 10px; background: transparent;}
#mapselector {position: relative; margin-top: 0; padding: 1em; background: white; border: 1px solid gray; border-radius: 4px; box-shadow: 0px 0px 0px 2px rgba(0,0,0,0.1);}
#legendcontainer {position: relative; padding: 1em; margin-top: 1em; background-color: white; border: 1px solid gray; border-radius: 4px; box-shadow: 0px 0px 0px 2px rgba(0,0,0,0.1);}
#legend { position: relative; }
#info { position: relative; margin-top: 1em; padding: 1em; min-width:100px; max-height: 150px; overflow:auto; background-color: white; border: 1px solid gray; border-radius: 4px; box-shadow: 0px 0px 0px 2px rgba(0,0,0,0.1);}
#coordinatecontainer {position: absolute; left: 50%; bottom: 1em;}
#coordinates {position: relative; left: -50%; background-color: white; border: px solid gray; padding: 0.5em; border-radius: 4px; box-shadow: 0 0 0 2px rgba(0,0,0,0.1);}
#placeholder {color:gray;}
#maploader {
z-index: 100;
display: block;
position: absolute;
margin-left: auto;
margin-right: auto;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
#expandlegend,#collapselegend {position: absolute; right: 10px; top: 5px; width: 20px; height: 20px;cursor:pointer;}
.hidden {visibility: hidden;}
</style>
</head>
<body>
<div id='map'></div>
<div id='infocontainer'>
<div id='mapselector'>
<input type="radio" name="mapselector" id="cbsindeling" checked="true"><label for="cbsindeling">CBS indelingen</label><br>
<input type="radio" name="mapselector" id="cbsbevolking"><label for="cbsbevolking">CBS bevolking</label><br>
</div>
<div id="legendcontainer">
<div id='legend'><img src="/mapproxy/cbsindeling2017/wms?service=wms&version=1.3.0&request=getLegendGraphic&layer=cbsindeling2017legenda&format=image/png"></div>
<span id="collapselegend">
<svg enable-background="new 0 0 24 24" viewBox="0 0 24 24">
<polyline fill="none" points="3,15.5 12,6.5 21,15.5 " stroke="#000000" stroke-miterlimit="10" stroke-width="2"/>
</svg>
</span>
<span id="expandlegend" class="hidden">
<svg enable-background="new 0 0 24 24" viewBox="0 0 24 24">
<polyline fill="none" points="21,8.5 12,17.5 3,8.5 " stroke="#000000" stroke-miterlimit="10" stroke-width="2"/>
</svg>
</span>
</div>
<div id='info'><span id="placeholder">Klik op een gebied</span></div>
</div>
<div id='coordinatecontainer'><div id='coordinates'></div></div>
<div id="maploader"><img src="loader.gif" alt="Spinning wheel"></div>
<script>
//mapboxgl.accessToken = ;
function displayMapLoader(visible) {
if (visible) {
document.getElementById('maploader').style.display = 'block';
} else {
document.getElementById('maploader').style.display = 'none';
}
}
var map = new mapboxgl.Map({
container: 'map',
zoom: 9,
center: [4.913196, 52.342259],
style: "styles/openmaptiles/positronworld.json",
hash: false
});
var data = {"type": "FeatureCollection", "features": []};
var cbsIndeling = {
"id" : "cbsindeling2017",
"type": "raster",
"source": {
"type": "raster",
"tileSize": 256,
"tiles": [
"/mapproxy/cbsindeling2017/wmts/cbsindeling2017/spherical_mercator/{z}/{x}/{y}.png"
],
"attribution": "© Geodan, CBS"
}
}
var cbsBevolking = {
"id" : "cbsbevolking2017",
"type": "raster",
"source": {
"type": "raster",
"tileSize": 256,
"tiles": [
"/mapproxy/cbsbevolking2017/wmts/cbsbevolking2017/spherical_mercator/{z}/{x}/{y}.png"
],
"attribution": "© Geodan, CBS"
}
}
map.on('load', function() {
//map.addLayer(cbsIndeling, "place_other");
map.addLayer(cbsIndeling);
map.addControl(new mapboxgl.ScaleControl({position: 'bottom-left'}));
map.addControl(new mapboxgl.NavigationControl({position: 'bottom-right'}));
map.addSource('selectedfeature', { type: 'geojson', data: data});
map.addLayer({
"id": "selectedfeature",
"type": "line",
"source": "selectedfeature",
"paint": {
"line-color": "red",
"line-opacity": 0.75,
"line-width": 4
}
});
// hack for geoJSON attribution, https://github.com/mapbox/mapbox-gl-js/issues/1485#issuecomment-298253549
map.style.sourceCaches['selectedfeature']._source.attribution = "© foobar";
var radioBevolking = document.getElementById("cbsbevolking");
var radioCBSIndeling = document.getElementById("cbsindeling");
radioBevolking.addEventListener("click", function(e){
if (radioBevolking.checked) {
map.removeLayer("cbsindeling2017");
map.addLayer(cbsBevolking, "selectedfeature");
//map.addLayer(cbsBevolking, "place_other");
document.getElementById('legend').innerHTML='<img src="/mapproxy/cbsbevolking2017/wms?service=wms&version=1.3.0&request=getLegendGraphic&layer=cbsbevolking2017legenda&format=image/png">';
featureinfoUrl = "/mapproxy/cbsbevolking2017/wms?styles=&format=png&request=GetFeatureInfo&layers=cbsbevolking2017&query_layers=cbsbevolking2017&width=3&height=3&x=1&y=1&version=1.1.1&srs=epsg:3857&info_format=text/xml&bbox="
}
});
radioCBSIndeling.addEventListener("click", function(e){
if (radioCBSIndeling.checked) {
map.removeLayer("cbsbevolking2017");
map.addLayer(cbsIndeling, "selectedfeature")
//map.addLayer(cbsIndeling, "place_other")
document.getElementById('legend').innerHTML='<img src="/mapproxy/cbsindeling2017/wms?service=wms&version=1.3.0&request=getLegendGraphic&layer=cbsindeling2017legenda&format=image/png">';
featureinfoUrl = "/mapproxy/cbsindeling2017/wms?styles=&format=png&request=GetFeatureInfo&layers=cbsindeling2017&query_layers=cbsindeling2017&width=3&height=3&x=1&y=1&version=1.1.1&srs=epsg:3857&info_format=text/xml&bbox=";
}
});
document.getElementById('expandlegend').addEventListener('click', function(){
document.getElementById('collapselegend').classList.remove("hidden");
document.getElementById('legend').style.display = "block";
this.classList.add("hidden");
});
document.getElementById('collapselegend').addEventListener('click', function(){
document.getElementById('expandlegend').classList.remove('hidden');
document.getElementById('legend').style.display = "none";
this.classList.add("hidden");
});
});
// srs optional, defaults to 'EPSG:3857'
// adds projected .x and .y properties to lngLat
function projectLngLat(lngLat, srs)
{
if (!srs) {
srs = 'EPSG:3857';
}
var project = proj4('EPSG:4326', srs);
var p = project.forward({x: lngLat.lng, y: lngLat.lat});
lngLat.x = p.x;
lngLat.y = p.y;
return lngLat;
}
function XMLtoGeoJSON(xmlString)
{
var result = {"type": "FeatureCollection", "features": []};
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(xmlString,"text/xml");
var root = xmlDoc.getElementsByTagName("GetFeatureInfoResponse");
if (root && root.length) {
var layers = root[0].getElementsByTagName("Layer");
var layerInfo = {};
for (var i = 0; i < layers.length; i++) {
layerInfo.name = layers[i].getAttribute('name');
var features = layers[i].getElementsByTagName('Feature');
if (features && features.length) {
for (var j = 0; j < features.length; j++) {
var featureInfo = {};
featureInfo.properties = {};
var attributes = features[j].getElementsByTagName('Attribute');
if (attributes && attributes.length) {
for (var k = 0; k < attributes.length; k++) {
var attrName = attributes[k].getAttribute('name');
if (attrName != 'geometry') {
featureInfo.properties[attrName] = attributes[k].getAttribute('value');
} else {
var geometryString = attributes[k].getAttribute('value');
var endPos = geometryString.indexOf('(');
var type = geometryString.substring(0, endPos).trim();
geometryString = geometryString.substring(endPos).split(',').map(function(pair){return "["+pair.trim().replace(" ", ",")+"]"}).join(",").replace(/\(/g,"[").replace(/\)/g,"]");
featureInfo.geometry = {"type": type, "coordinates": JSON.parse(geometryString)};
}
}
}
featureObject = {"type": "Feature", "properties": featureInfo.properties, "geometry": featureInfo.geometry, "layername": layerInfo.name};
var bBoxInfo = {};
var boundingBox = features[j].getElementsByTagName('BoundingBox');
if (boundingBox && boundingBox.length) {
bBoxInfo.left = boundingBox[0].getAttribute('minx');
bBoxInfo.right = boundingBox[0].getAttribute('maxx');
bBoxInfo.top = boundingBox[0].getAttribute('maxy');
bBoxInfo.bottom = boundingBox[0].getAttribute('miny');
bBoxInfo.srs = boundingBox[0].getAttribute('SRS');
featureObject.bbox = [parseFloat(bBoxInfo.left), parseFloat(bBoxInfo.bottom), parseFloat(bBoxInfo.right), parseFloat(bBoxInfo.top)];
}
if (result.srs) {
if (bBoxInfo.srs != result.srs) {
// set deviating feature srs
featureObject.srs = bBoxInfo.srs;
}
} else {
if (bBoxInfo.srs) {
// set global GeoJSON srs
result.srs = bBoxInfo.srs;
}
}
result.features.push(featureObject);
}
}
}
} else {
// unknown xml format or not xml?
}
return result;
}
function transformArray(project, array)
{
for (var i = 0; i < array.length; i++) {
if (typeof array[i] != 'number') {
transformArray(project, array[i]);
} else {
if (i % 2 == 0) {
var p = project.forward([array[i], array[i+1]]);
array[i] = p[0];
array[i+1] = p[1];
i++;
}
}
}
}
function geoJSONTransform(geoJSON, inSRS, outSRS)
{
var project = proj4(inSRS, outSRS);
if (geoJSON.srs) {
geoJSON.srs = outSRS;
}
geoJSON.features.forEach(function(feature){
transformArray(project, feature.geometry.coordinates);
if (feature.bbox) {
transformArray(project, feature.bbox);
}
});
return geoJSON;
}
var featureinfoUrl = "/mapproxy/cbsindeling2017/wms?styles=&format=png&request=GetFeatureInfo&layers=cbsindeling2017&query_layers=cbsindeling2017&width=3&height=3&x=1&y=1&version=1.1.1&srs=epsg:3857&info_format=text/xml&bbox=";
function getFeatureInfo(lngLat, callback){
// mapbox-ql requests wmts level round(map.getZoom()) + 1
var wmtsResolution = (2 * 20037508.342789244) / (256 * Math.pow(2, (Math.round(map.getZoom())+1)));
// get webmercator coordinates for clicked point
var clickedPointMercator = projectLngLat(lngLat);
// create 3 x 3 pixel bounding box in webmercator coordinates
var leftbottom = {x: clickedPointMercator.x - 1.5 * wmtsResolution, y: clickedPointMercator.y - 1.5 * wmtsResolution};
var righttop = {x: clickedPointMercator.x + 1.5 * wmtsResolution, y: clickedPointMercator.y + 1.5 * wmtsResolution};
// getFeatureinfo url for center pixel of 3x3 pixel area
var url=featureinfoUrl+(leftbottom.x)+","+(leftbottom.y)+","+(righttop.x)+","+(righttop.y);
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
if (callback) {
callback(XMLtoGeoJSON(xhr.responseText));
}
}
}
xhr.open('GET', url, true);
xhr.send(null);
}
//polyfill for Object.entries()
if (!Object.entries)
Object.entries = function( obj ){
var ownProps = Object.keys( obj ),
i = ownProps.length,
resArray = new Array(i); // preallocate the Array
while (i--)
resArray[i] = [ownProps[i], obj[ownProps[i]]];
return resArray;
};
var prevData = ""
map.on('click', function (e) {
document.getElementById('info').innerHTML = '';
getFeatureInfo(e.lngLat, function(data){
dataString = JSON.stringify(data);
if (prevData == dataString) {
// same area clicked, unselect area
data = {"type": "FeatureCollection", "features": []};
prevData = ""
} else {
prevData = dataString;
}
if (data && data.srs) {
if (data.srs.toUpperCase() != 'EPSG:4326') {
data = geoJSONTransform(data, data.srs, 'EPSG:4326');
}
}
document.getElementById('info').innerHTML = data.features.map(function(feature){
return Object.entries(feature.properties).map(function(keyval){return "<b>"+keyval[0]+"</b> " + keyval[1]}).join('<br>')
}).join('<br>');
map.getSource('selectedfeature').setData(data);
});
});
map.on('mousemove', function (e) {
document.getElementById('coordinates').innerHTML =
// e.lngLat is the longitude, latitude geographical position of the event
'<b>latitude</b>: ' + Math.round(e.lngLat.lat * 1000)/1000.0 + ", <b>longitude</b>: " + Math.round(e.lngLat.lng * 1000)/1000.0
});
map.on("dataloading", function(){
displayMapLoader(true);
})
map.on("render", function() {
if(map.loaded()) {
displayMapLoader(false);
}
});
</script>
</body>
</html>