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+var map;
+
+(function() {
+ // Set document language for css content
+ document.documentElement.lang = (navigator.userLanguage || navigator.language).split("-")[0];
+
+ // A panel for switching between Aerial and Map, and for turning labels
+ // on and off.
+ var layerPanel = new OpenLayers.Control.Panel({
+ displayClass: "layerPanel",
+ autoActivate: true
+ });
+ var aerialButton = new OpenLayers.Control({
+ type: OpenLayers.Control.TYPE_TOOL,
+ displayClass: "aerialButton",
+ eventListeners: {
+ activate: function() {
+ if (aerial) {map.setBaseLayer(aerial);}
+ }
+ }
+ });
+ var mapButton = new OpenLayers.Control({
+ type: OpenLayers.Control.TYPE_TOOL,
+ displayClass: "mapButton",
+ eventListeners: {
+ activate: function() {
+ if (fmzk) {map.setBaseLayer(fmzk);}
+ }
+ }
+ });
+ var labelButton = new OpenLayers.Control({
+ type: OpenLayers.Control.TYPE_TOGGLE,
+ displayClass: "labelButton",
+ eventListeners: {
+ activate: function() {
+ if (labels) {labels.setVisibility(true);}
+ },
+ deactivate: function() {
+ if (labels) {labels.setVisibility(false);}
+ }
+ }
+ });
+ layerPanel.addControls([aerialButton, mapButton, labelButton]);
+
+ var zoomPanel = new OpenLayers.Control.ZoomPanel();
+
+ // Geolocate control for the Locate button - the locationupdated handler
+ // draws a cross at the location and a circle showing the accuracy radius.
+ var geolocate = new OpenLayers.Control.Geolocate({
+ type: OpenLayers.Control.TYPE_TOGGLE,
+ bind: false,
+ watch: true,
+ geolocationOptions: {
+ enableHighAccuracy: false,
+ maximumAge: 0,
+ timeout: 7000
+ },
+ eventListeners: {
+ activate: function() {
+ map.addLayer(vector);
+ },
+ deactivate: function() {
+ map.removeLayer(vector);
+ vector.removeAllFeatures();
+ },
+ locationupdated: function(e) {
+ vector.removeAllFeatures();
+ vector.addFeatures([
+ new OpenLayers.Feature.Vector(e.point, null, {
+ graphicName: 'cross',
+ strokeColor: '#f00',
+ strokeWidth: 2,
+ fillOpacity: 0,
+ pointRadius: 10
+ }),
+ new OpenLayers.Feature.Vector(
+ OpenLayers.Geometry.Polygon.createRegularPolygon(
+ new OpenLayers.Geometry.Point(e.point.x, e.point.y),
+ e.position.coords.accuracy / 2, 50, 0
+ ), null, {
+ fillOpacity: 0.1,
+ fillColor: '#000',
+ strokeColor: '#f00',
+ strokeOpacity: 0.6
+ }
+ )
+ ]);
+ map.zoomToExtent(vector.getDataExtent());
+ }
+ }
+ });
+ zoomPanel.addControls([geolocate]);
+
+ // Fallback layer when outside Vienna
+ var osm = new OpenLayers.Layer.OSM();
+
+ // Map with navigation controls optimized for touch devices
+ map = new OpenLayers.Map({
+ div: "map",
+ theme: null,
+ projection: "EPSG:3857",
+ units: "m",
+ maxResolution: 38.21851413574219,
+ numZoomLevels: 8,
+ controls: [
+ new OpenLayers.Control.Navigation(),
+ new OpenLayers.Control.Attribution(),
+ zoomPanel,
+ layerPanel
+ ],
+ eventListeners: {
+ moveend: function() {
+ // update anchor for permalinks
+ var ctr = map.getCenter();
+ window.location.hash = "x="+ctr.lon+"&y="+ctr.lat+"&z="+map.getZoom();
+ // switch to OSM when outside Vienna
+ if (!map.getExtent().intersectsBounds(fmzk.tileFullExtent)) {
+ if (map.baseLayer !== osm) {
+ map.addLayer(osm);
+ map.setBaseLayer(osm);
+ }
+ } else if (map.baseLayer === osm) {
+ map.removeLayer(osm);
+ }
+ }
+ }
+ });
+ layerPanel.activateControl(mapButton);
+ layerPanel.activateControl(labelButton);
+
+ // Vector layer for the location cross and circle
+ var vector = new OpenLayers.Layer.Vector("Vector Layer");
+
+ // Defaults for the WMTS layers
+ var defaults = {
+ zoomOffset: 12,
+ requestEncoding: "REST",
+ matrixSet: "google3857",
+ attribution: 'Datenquelle: Stadt Wien - <a href="http://data.wien.gv.at">data.wien.gv.at</a>'
+ };
+
+ // The WMTS layers we're going to add
+ var fmzk, aerial, labels;
+
+ // zoom to initial extent or restore position from permalink
+ function zoomToInitialExtent() {
+ var extent = fmzk.tileFullExtent,
+ ctr = extent.getCenterLonLat(),
+ zoom = map.getZoomForExtent(extent, true),
+ params = OpenLayers.Util.getParameters("?"+window.location.hash.substr(1));
+ OpenLayers.Util.applyDefaults(params, {x:ctr.lon, y:ctr.lat, z:zoom});
+ map.setCenter(new OpenLayers.LonLat(params.x, params.y), params.z);
+ }
+
+ // Request capabilities and create layers
+ OpenLayers.ProxyHost = "proxy.cgi?url=";
+ OpenLayers.Request.GET({
+ url: "http://maps.wien.gv.at/wmts/1.0.0/WMTSCapabilities.xml",
+ success: function(request) {
+ var format = new OpenLayers.Format.WMTSCapabilities();
+ var doc = request.responseText,
+ caps = format.read(doc);
+ fmzk = format.createLayer(caps, OpenLayers.Util.applyDefaults(
+ {layer:"fmzk"}, defaults
+ ));
+ aerial = format.createLayer(caps, OpenLayers.Util.applyDefaults(
+ {layer:"lb"}, defaults
+ ));
+ labels = format.createLayer(caps, OpenLayers.Util.applyDefaults(
+ {layer:"beschriftung", isBaseLayer: false, transitionEffect: 'map-resize'},
+ defaults
+ ));
+ map.addLayers([fmzk, aerial, labels]);
+ zoomToInitialExtent();
+ }
+ });
+
+ // Instead of building the layers from the capabilities document, we could
+ // look at it ourselves and create the layers manually. If you want to try
+ // that, uncomment the following code and remove the "Request capabilities
+ // and create layers" block above.
+ /*
+ var extent = new OpenLayers.Bounds(1799448.394855, 6124949.74777, 1848250.442089, 6162571.828177);
+ defaults.tileFullExtent = extent;
+ fmzk = new OpenLayers.Layer.WMTS(OpenLayers.Util.applyDefaults({
+ url: [
+ "http://maps.wien.gv.at/wmts/fmzk/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps1.wien.gv.at/wmts/fmzk/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps2.wien.gv.at/wmts/fmzk/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps3.wien.gv.at/wmts/fmzk/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps4.wien.gv.at/wmts/fmzk/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg"
+ ],
+ layer: "fmzk",
+ style: "pastell"
+ },
+ defaults));
+ aerial = new OpenLayers.Layer.WMTS(OpenLayers.Util.applyDefaults({
+ url: [
+ "http://maps.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps1.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps2.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps3.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg",
+ "http://maps4.wien.gv.at/wmts/lb/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.jpeg"
+ ],
+ layer: "lb",
+ style: "farbe"
+ },
+ defaults));
+ labels = new OpenLayers.Layer.WMTS(OpenLayers.Util.applyDefaults({
+ url: [
+ "http://maps.wien.gv.at/wmts/beschriftung/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png",
+ "http://maps1.wien.gv.at/wmts/beschriftung/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png",
+ "http://maps2.wien.gv.at/wmts/beschriftung/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png",
+ "http://maps3.wien.gv.at/wmts/beschriftung/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png",
+ "http://maps4.wien.gv.at/wmts/beschriftung/{Style}/{TileMatrixSet}/{TileMatrix}/{TileRow}/{TileCol}.png"
+ ],
+ layer: "beschriftung",
+ style: "normal",
+ isBaseLayer: false,
+ transitionEffect: 'map-resize'
+ },
+ defaults));
+ map.addLayers([fmzk, aerial, labels]);
+ zoomToInitialExtent();
+ */
+
+})();
+
+// Reliably hide the address bar on Android and iOS devices. From
+// http://blog.nateps.com/how-to-hide-the-address-bar-in-a-full-screen
+(function() {
+ var page = document.getElementById("map"),
+ ua = navigator.userAgent,
+ iphone = ~ua.indexOf('iPhone') || ~ua.indexOf('iPod'),
+ ipad = ~ua.indexOf('iPad'),
+ ios = iphone || ipad,
+ // Detect if this is running as a fullscreen app from the homescreen
+ fullscreen = window.navigator.standalone,
+ android = ~ua.indexOf('Android'),
+ lastWidth = 0;
+
+ if (android) {
+ // Android's browser adds the scroll position to the innerHeight, just to
+ // make this really fucking difficult. Thus, once we are scrolled, the
+ // page height value needs to be corrected in case the page is loaded
+ // when already scrolled down. The pageYOffset is of no use, since it always
+ // returns 0 while the address bar is displayed.
+ window.onscroll = function() {
+ page.style.height = window.innerHeight + 'px';
+ };
+ }
+ var setupScroll = window.onload = function() {
+ // Start out by adding the height of the location bar to the width, so that
+ // we can scroll past it
+ if (ios) {
+ // iOS reliably returns the innerWindow size for documentElement.clientHeight
+ // but window.innerHeight is sometimes the wrong value after rotating
+ // the orientation
+ var height = document.documentElement.clientHeight;
+ // Only add extra padding to the height on iphone / ipod, since the ipad
+ // browser doesn't scroll off the location bar.
+ if (iphone && !fullscreen) height += 60;
+ page.style.height = height + 'px';
+ } else if (android) {
+ // The stock Android browser has a location bar height of 56 pixels, but
+ // this very likely could be broken in other Android browsers.
+ page.style.height = (window.innerHeight + 56) + 'px';
+ }
+ // Scroll after a timeout, since iOS will scroll to the top of the page
+ // after it fires the onload event
+ setTimeout(scrollTo, 0, 0, 1);
+ };
+ (window.onresize = function() {
+ var pageWidth = page.offsetWidth;
+ // Android doesn't support orientation change, so check for when the width
+ // changes to figure out when the orientation changes
+ if (lastWidth == pageWidth) return;
+ lastWidth = pageWidth;
+ setupScroll();
+ })();
+})();
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