New WMTS GetCapabilities & RESTful example.
Uses the WMTS server of the ogdwien open data initiative of the City of Vienna. Shows how to build a fullscreen map that works well on both mobile and desktop clients. With lightweight permalinks and Geolocate control.
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var map;
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(function() {
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OpenLayers.ProxyHost = "proxy.cgi?url=";
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// Set document language for css content
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document.documentElement.lang = (navigator.userLanguage || navigator.language).split("-")[0];
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// A panel for switching between Aerial and Map, and for turning labels
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// on and off.
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var layerPanel = new OpenLayers.Control.Panel({
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displayClass: "layerPanel",
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autoActivate: true
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});
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var aerialButton = new OpenLayers.Control({
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type: OpenLayers.Control.TYPE_TOOL,
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displayClass: "aerialButton",
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eventListeners: {
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activate: function() {
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if (aerial) {map.setBaseLayer(aerial);}
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}
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}
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});
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var mapButton = new OpenLayers.Control({
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type: OpenLayers.Control.TYPE_TOOL,
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displayClass: "mapButton",
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eventListeners: {
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activate: function() {
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if (fmzk) {map.setBaseLayer(fmzk);}
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}
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}
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});
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var labelButton = new OpenLayers.Control({
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type: OpenLayers.Control.TYPE_TOGGLE,
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displayClass: "labelButton",
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eventListeners: {
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activate: function() {
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if (labels) {labels.setVisibility(true);}
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},
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deactivate: function() {
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if (labels) {labels.setVisibility(false);}
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}
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}
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});
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layerPanel.addControls([aerialButton, mapButton, labelButton]);
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var zoomPanel = new OpenLayers.Control.ZoomPanel();
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// Geolocate control for the Locate button - the locationupdated handler
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// draws a cross at the location and a circle showing the accuracy radius.
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zoomPanel.addControls([
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new OpenLayers.Control.Geolocate({
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type: OpenLayers.Control.TYPE_TOGGLE,
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geolocationOptions: {
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enableHighAccuracy: false,
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maximumAge: 0,
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timeout: 7000
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},
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eventListeners: {
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activate: function() {
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map.addLayer(vector);
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},
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deactivate: function() {
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map.removeLayer(vector);
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vector.removeAllFeatures();
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},
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locationupdated: function(e) {
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vector.removeAllFeatures();
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vector.addFeatures([
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new OpenLayers.Feature.Vector(e.point, null, {
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graphicName: 'cross',
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strokeColor: '#f00',
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strokeWidth: 2,
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fillOpacity: 0,
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pointRadius: 10
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}),
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new OpenLayers.Feature.Vector(
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OpenLayers.Geometry.Polygon.createRegularPolygon(
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new OpenLayers.Geometry.Point(e.point.x, e.point.y),
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e.position.coords.accuracy / 2, 50, 0
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), null, {
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fillOpacity: 0.1,
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fillColor: '#000',
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strokeColor: '#f00',
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strokeOpacity: 0.6
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}
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)
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]);
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map.zoomToExtent(vector.getDataExtent());
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}
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}
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})
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]);
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// Map with navigation controls optimized for touch devices
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map = new OpenLayers.Map({
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div: "map",
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theme: null,
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projection: "EPSG:3857",
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units: "m",
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maxExtent: new OpenLayers.Bounds(
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-20037508.34, -20037508.34, 20037508.34, 20037508.34
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),
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maxResolution: 156543.0339,
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numZoomLevels: 20,
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controls: [
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new OpenLayers.Control.TouchNavigation({
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mouseWheelOptions: {
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cumulative: false,
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interval: 20
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},
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dragPanOptions: {
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enableKinetic: {
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deceleration: 0.02
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}
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},
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zoomBoxEnabled: false
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}),
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new OpenLayers.Control.Attribution(),
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zoomPanel,
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layerPanel
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],
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eventListeners: {
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moveend: function() {
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// update anchor for permalinks
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var ctr = map.getCenter();
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window.location.hash = "x="+ctr.lon+"&y="+ctr.lat+"&z="+map.getZoom();
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}
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}
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});
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layerPanel.activateControl(mapButton);
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layerPanel.activateControl(labelButton);
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// Vector layer for the location cross and circle
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var vector = new OpenLayers.Layer.Vector("Vector Layer");
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// The WMTS layers we're going to add
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var fmzk, aerial, labels;
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// The WMTSCapabilities format and the default options for the layers
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var format = new OpenLayers.Format.WMTSCapabilities(), defaults = {
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requestEncoding: "REST",
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matrixSet: "google3857",
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transitionEffect: "resize",
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tileLoadingDelay: 0,
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attribution: 'Datenquelle: Stadt Wien - <a href="http://data.wien.gv.at">data.wien.gv.at</a>'
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};
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// Request capabilities and create layers
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OpenLayers.Request.GET({
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url: "http://maps.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml",
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success: function(request) {
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var doc = request.responseText,
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caps = format.read(doc);
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fmzk = format.createLayer(caps, OpenLayers.Util.applyDefaults(
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{layer:"fmzk", requestEncoding:"REST"}, defaults
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));
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aerial = format.createLayer(caps, OpenLayers.Util.applyDefaults(
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{layer:"lb", requestEncoding:"REST"}, defaults
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));
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labels = format.createLayer(caps, OpenLayers.Util.applyDefaults(
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{layer:"beschriftung", requestEncoding:"REST", isBaseLayer: false},
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defaults
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));
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map.addLayers([fmzk, aerial, labels]);
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// zoom to initial extent or restore position from permalink
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var extent = fmzk.tileFullExtent,
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ctr = extent.getCenterLonLat(),
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zoom = map.getZoomForExtent(extent, true),
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params = OpenLayers.Util.getParameters("?"+window.location.hash.substr(1));
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OpenLayers.Util.applyDefaults(params, {x:ctr.lon, y:ctr.lat, z:zoom});
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map.setCenter(new OpenLayers.LonLat(params.x, params.y), params.z);
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}
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});
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})();
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// Reliably hide the address bar on Android and iOS devices. From
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// http://blog.nateps.com/how-to-hide-the-address-bar-in-a-full-screen
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(function() {
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var page = document.getElementById("map"),
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ua = navigator.userAgent,
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iphone = ~ua.indexOf('iPhone') || ~ua.indexOf('iPod'),
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ipad = ~ua.indexOf('iPad'),
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ios = iphone || ipad,
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// Detect if this is running as a fullscreen app from the homescreen
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fullscreen = window.navigator.standalone,
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android = ~ua.indexOf('Android'),
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lastWidth = 0;
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if (android) {
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// Android's browser adds the scroll position to the innerHeight, just to
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// make this really fucking difficult. Thus, once we are scrolled, the
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// page height value needs to be corrected in case the page is loaded
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// when already scrolled down. The pageYOffset is of no use, since it always
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// returns 0 while the address bar is displayed.
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window.onscroll = function() {
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page.style.height = window.innerHeight + 'px';
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};
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}
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var setupScroll = window.onload = function() {
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// Start out by adding the height of the location bar to the width, so that
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// we can scroll past it
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if (ios) {
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// iOS reliably returns the innerWindow size for documentElement.clientHeight
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// but window.innerHeight is sometimes the wrong value after rotating
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// the orientation
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var height = document.documentElement.clientHeight;
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// Only add extra padding to the height on iphone / ipod, since the ipad
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// browser doesn't scroll off the location bar.
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if (iphone && !fullscreen) height += 60;
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page.style.height = height + 'px';
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} else if (android) {
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// The stock Android browser has a location bar height of 56 pixels, but
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// this very likely could be broken in other Android browsers.
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page.style.height = (window.innerHeight + 56) + 'px';
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}
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// Scroll after a timeout, since iOS will scroll to the top of the page
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// after it fires the onload event
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setTimeout(scrollTo, 0, 0, 1);
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};
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(window.onresize = function() {
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var pageWidth = page.offsetWidth;
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// Android doesn't support orientation change, so check for when the width
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// changes to figure out when the orientation changes
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if (lastWidth == pageWidth) return;
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lastWidth = pageWidth;
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setupScroll();
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})();
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})();
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