Layer switching support, ChartBundle, Bing maps.

debian/copyright

@@ -44,6 +44,12 @@ Comment: _generic_plane_svg was added with https://github.com/mutability/dump109
 Files: public_html/jquery/*
 Copyright: 2015 jQuery Foundation and other contributors
 License: MIT
+Source: http://www.jquery.com/
+
+Files: public_html/ol3/ol3-layerswitcher.js public_html/ol3/ol3-layerswitcher.css
+Copyright: Matt Walker
+License: MIT
+Source: https://github.com/walkermatt/ol3-layerswitcher
 
 Files: debian/*
 Copyright: 2014,2015 Oliver Jowett <oliver@mutability.co.uk>

public_html/config.js

@@ -39,21 +39,6 @@ SiteLat     = 45.0;            // position of the marker
 SiteLon     = 9.0;
 SiteName    = "My Radar Site"; // tooltip of the marker
 
-
-// Extra map types to include. These work for maps with 256x256 tiles where a
-// URL can be constructed by simple substition of x/y tile number and zoom level
-var ExtraMapTypes = {
-        'OpenStreetMap'    : 'http://tile.openstreetmap.org/{z}/{x}/{y}.png',
-        // NB: the following generally only cover the US
-        'Sectional Charts' : 'http://wms.chartbundle.com/tms/1.0.0/sec/{z}/{x}/{y}.png?origin=nw',
-        'Terminal Charts'  : 'http://wms.chartbundle.com/tms/1.0.0/tac/{z}/{x}/{y}.png?origin=nw',
-        'World Charts'     : 'http://wms.chartbundle.com/tms/1.0.0/wac/{z}/{x}/{y}.png?origin=nw',
-        'IFR Low Charts'   : 'http://wms.chartbundle.com/tms/1.0.0/enrl/{z}/{x}/{y}.png?origin=nw',
-        'IFR Area Charts'  : 'http://wms.chartbundle.com/tms/1.0.0/enra/{z}/{x}/{y}.png?origin=nw',
-        'IFR High Charts'  : 'http://wms.chartbundle.com/tms/1.0.0/enrh/{z}/{x}/{y}.png?origin=nw'
-};
-
-
 // -- Marker settings -------------------------------------
 
 // These settings control the coloring of aircraft by altitude.
@@ -127,3 +112,6 @@ ShowFlags = true;
 
 // Path to country flags (can be a relative or absolute URL; include a trailing /)
 FlagPath = "flags-tiny/";
+
+// Provide a Bing Maps API key here to enable the Bing imagery layer.
+BingMapsAPIKey = null;

public_html/gmap.html

@@ -7,9 +7,12 @@
 		<script src="jquery/jquery-3.0.0.min.js"></script>
 		<script src="jquery/jquery-ui-1.11.4.min.js"></script>
 
-                <link rel="stylesheet" href="http://openlayers.org/en/v3.16.0/css/ol.css" type="text/css">
+                <link rel="stylesheet" href="http://openlayers.org/en/v3.16.0/css/ol.css" type="text/css" />
                 <script src="http://openlayers.org/en/v3.16.0/build/ol-debug.js" type="text/javascript"></script>
 
+                <link rel="stylesheet" href="ol3/ol3-layerswitcher.css" type="text/css"/>
+                <script src="ol3/ol3-layerswitcher.js" type="text/javascript"></script>
+
 		<script type="text/javascript" src="config.js"></script>
 		<script type="text/javascript" src="markers.js"></script>
 		<script type="text/javascript" src="dbloader.js"></script>

public_html/ol3/ol3-layerswitcher.css

@@ -0,0 +1,92 @@
+.layer-switcher.shown.ol-control {
+    background-color: transparent;
+}
+
+.layer-switcher.shown.ol-control:hover {
+    background-color: transparent;
+}
+
+.layer-switcher {
+    position: absolute;
+    top: 3.5em;
+    right: 0.5em;
+    text-align: left;
+}
+
+.layer-switcher.shown {
+    bottom: 3em;
+}
+
+.layer-switcher .panel {
+    padding: 0 1em 0 0;
+    margin: 0;
+    border: 4px solid #eee;
+    border-radius: 4px;
+    background-color: white;
+    display: none;
+    max-height: 100%;
+    overflow-y: auto;
+}
+
+.layer-switcher.shown .panel {
+    display: block;
+}
+
+.layer-switcher button {
+    float: right;
+    width: 38px;
+    height: 38px;
+    background-image: url('data:image/png;base64,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') /*logo.png*/;
+    background-repeat: no-repeat;
+    background-position: 2px;
+    background-color: white;
+    border: none;
+}
+
+.layer-switcher.shown button {
+    display: none;
+}
+
+.layer-switcher button:focus, .layer-switcher button:hover {
+    background-color: white;
+}
+
+.layer-switcher ul {
+    padding-left: 1em;
+    list-style: none;
+}
+
+.layer-switcher li.group {
+    padding-top: 5px;
+}
+
+.layer-switcher li.group > label {
+    font-weight: bold;
+}
+
+.layer-switcher li.layer {
+    display: table;
+}
+
+.layer-switcher li.layer label, .layer-switcher li.layer input {
+    display: table-cell;
+    vertical-align: sub;
+}
+
+.layer-switcher input {
+    margin: 4px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar {
+    width: 4px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar-track {
+    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
+    border-radius: 10px;
+}
+
+.layer-switcher.touch ::-webkit-scrollbar-thumb {
+    border-radius: 10px;
+    -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.5);
+}

public_html/ol3/ol3-layerswitcher.js

@@ -0,0 +1,283 @@
+/**
+ * OpenLayers 3 Layer Switcher Control.
+ * See [the examples](./examples) for usage.
+ * @constructor
+ * @extends {ol.control.Control}
+ * @param {Object} opt_options Control options, extends olx.control.ControlOptions adding:
+ *                              **`tipLabel`** `String` - the button tooltip.
+ */
+ol.control.LayerSwitcher = function(opt_options) {
+
+    var options = opt_options || {};
+
+    var tipLabel = options.tipLabel ?
+      options.tipLabel : 'Legend';
+
+    this.mapListeners = [];
+
+    this.hiddenClassName = 'ol-unselectable ol-control layer-switcher';
+    if (ol.control.LayerSwitcher.isTouchDevice_()) {
+        this.hiddenClassName += ' touch';
+    }
+    this.shownClassName = this.hiddenClassName + ' shown';
+
+    var element = document.createElement('div');
+    element.className = this.hiddenClassName;
+
+    var button = document.createElement('button');
+    button.setAttribute('title', tipLabel);
+    element.appendChild(button);
+
+    this.panel = document.createElement('div');
+    this.panel.className = 'panel';
+    element.appendChild(this.panel);
+    ol.control.LayerSwitcher.enableTouchScroll_(this.panel);
+
+    var this_ = this;
+
+    button.onmouseover = function(e) {
+        this_.showPanel();
+    };
+
+    button.onclick = function(e) {
+        e = e || window.event;
+        this_.showPanel();
+        e.preventDefault();
+    };
+
+    this_.panel.onmouseout = function(e) {
+        e = e || window.event;
+        if (!this_.panel.contains(e.toElement || e.relatedTarget)) {
+            this_.hidePanel();
+        }
+    };
+
+    ol.control.Control.call(this, {
+        element: element,
+        target: options.target
+    });
+
+};
+
+ol.inherits(ol.control.LayerSwitcher, ol.control.Control);
+
+/**
+ * Show the layer panel.
+ */
+ol.control.LayerSwitcher.prototype.showPanel = function() {
+    if (this.element.className != this.shownClassName) {
+        this.element.className = this.shownClassName;
+        this.renderPanel();
+    }
+};
+
+/**
+ * Hide the layer panel.
+ */
+ol.control.LayerSwitcher.prototype.hidePanel = function() {
+    if (this.element.className != this.hiddenClassName) {
+        this.element.className = this.hiddenClassName;
+    }
+};
+
+/**
+ * Re-draw the layer panel to represent the current state of the layers.
+ */
+ol.control.LayerSwitcher.prototype.renderPanel = function() {
+
+    this.ensureTopVisibleBaseLayerShown_();
+
+    while(this.panel.firstChild) {
+        this.panel.removeChild(this.panel.firstChild);
+    }
+
+    var ul = document.createElement('ul');
+    this.panel.appendChild(ul);
+    this.renderLayers_(this.getMap(), ul);
+
+};
+
+/**
+ * Set the map instance the control is associated with.
+ * @param {ol.Map} map The map instance.
+ */
+ol.control.LayerSwitcher.prototype.setMap = function(map) {
+    // Clean up listeners associated with the previous map
+    for (var i = 0, key; i < this.mapListeners.length; i++) {
+        this.getMap().unByKey(this.mapListeners[i]);
+    }
+    this.mapListeners.length = 0;
+    // Wire up listeners etc. and store reference to new map
+    ol.control.Control.prototype.setMap.call(this, map);
+    if (map) {
+        var this_ = this;
+        this.mapListeners.push(map.on('pointerdown', function() {
+            this_.hidePanel();
+        }));
+        this.renderPanel();
+    }
+};
+
+/**
+ * Ensure only the top-most base layer is visible if more than one is visible.
+ * @private
+ */
+ol.control.LayerSwitcher.prototype.ensureTopVisibleBaseLayerShown_ = function() {
+    var lastVisibleBaseLyr;
+    ol.control.LayerSwitcher.forEachRecursive(this.getMap(), function(l, idx, a) {
+        if (l.get('type') === 'base' && l.getVisible()) {
+            lastVisibleBaseLyr = l;
+        }
+    });
+    if (lastVisibleBaseLyr) this.setVisible_(lastVisibleBaseLyr, true);
+};
+
+/**
+ * Toggle the visible state of a layer.
+ * Takes care of hiding other layers in the same exclusive group if the layer
+ * is toggle to visible.
+ * @private
+ * @param {ol.layer.Base} The layer whos visibility will be toggled.
+ */
+ol.control.LayerSwitcher.prototype.setVisible_ = function(lyr, visible) {
+    var map = this.getMap();
+    lyr.setVisible(visible);
+    if (visible && lyr.get('type') === 'base') {
+        // Hide all other base layers regardless of grouping
+        ol.control.LayerSwitcher.forEachRecursive(map, function(l, idx, a) {
+            if (l != lyr && l.get('type') === 'base') {
+                l.setVisible(false);
+            }
+        });
+    }
+};
+
+/**
+ * Render all layers that are children of a group.
+ * @private
+ * @param {ol.layer.Base} lyr Layer to be rendered (should have a title property).
+ * @param {Number} idx Position in parent group list.
+ */
+ol.control.LayerSwitcher.prototype.renderLayer_ = function(lyr, idx) {
+
+    var this_ = this;
+
+    var li = document.createElement('li');
+
+    var lyrTitle = lyr.get('title');
+    var lyrId = ol.control.LayerSwitcher.uuid();
+
+    var label = document.createElement('label');
+
+    if (lyr.getLayers && !lyr.get('combine')) {
+
+        li.className = 'group';
+        label.innerHTML = lyrTitle;
+        li.appendChild(label);
+        var ul = document.createElement('ul');
+        li.appendChild(ul);
+
+        this.renderLayers_(lyr, ul);
+
+    } else {
+
+        li.className = 'layer';
+        var input = document.createElement('input');
+        if (lyr.get('type') === 'base') {
+            input.type = 'radio';
+            input.name = 'base';
+        } else {
+            input.type = 'checkbox';
+        }
+        input.id = lyrId;
+        input.checked = lyr.get('visible');
+        input.onchange = function(e) {
+            this_.setVisible_(lyr, e.target.checked);
+        };
+        li.appendChild(input);
+
+        label.htmlFor = lyrId;
+        label.innerHTML = lyrTitle;
+        li.appendChild(label);
+
+    }
+
+    return li;
+
+};
+
+/**
+ * Render all layers that are children of a group.
+ * @private
+ * @param {ol.layer.Group} lyr Group layer whos children will be rendered.
+ * @param {Element} elm DOM element that children will be appended to.
+ */
+ol.control.LayerSwitcher.prototype.renderLayers_ = function(lyr, elm) {
+    var lyrs = lyr.getLayers().getArray().slice().reverse();
+    for (var i = 0, l; i < lyrs.length; i++) {
+        l = lyrs[i];
+        if (l.get('title')) {
+            elm.appendChild(this.renderLayer_(l, i));
+        }
+    }
+};
+
+/**
+ * **Static** Call the supplied function for each layer in the passed layer group
+ * recursing nested groups.
+ * @param {ol.layer.Group} lyr The layer group to start iterating from.
+ * @param {Function} fn Callback which will be called for each `ol.layer.Base`
+ * found under `lyr`. The signature for `fn` is the same as `ol.Collection#forEach`
+ */
+ol.control.LayerSwitcher.forEachRecursive = function(lyr, fn) {
+    lyr.getLayers().forEach(function(lyr, idx, a) {
+        fn(lyr, idx, a);
+        if (lyr.getLayers) {
+            ol.control.LayerSwitcher.forEachRecursive(lyr, fn);
+        }
+    });
+};
+
+/**
+ * Generate a UUID
+ * @returns {String} UUID
+ *
+ * Adapted from http://stackoverflow.com/a/2117523/526860
+ */
+ol.control.LayerSwitcher.uuid = function() {
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+        var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+        return v.toString(16);
+    });
+}
+
+/**
+* @private
+* @desc Apply workaround to enable scrolling of overflowing content within an
+* element. Adapted from https://gist.github.com/chrismbarr/4107472
+*/
+ol.control.LayerSwitcher.enableTouchScroll_ = function(elm) {
+   if(ol.control.LayerSwitcher.isTouchDevice_()){
+       var scrollStartPos = 0;
+       elm.addEventListener("touchstart", function(event) {
+           scrollStartPos = this.scrollTop + event.touches[0].pageY;
+       }, false);
+       elm.addEventListener("touchmove", function(event) {
+           this.scrollTop = scrollStartPos - event.touches[0].pageY;
+       }, false);
+   }
+};
+
+/**
+ * @private
+ * @desc Determine if the current browser supports touch events. Adapted from
+ * https://gist.github.com/chrismbarr/4107472
+ */
+ol.control.LayerSwitcher.isTouchDevice_ = function() {
+    try {
+        document.createEvent("TouchEvent");
+        return true;
+    } catch(e) {
+        return false;
+    }
+};

public_html/script.js

@@ -18,7 +18,7 @@ var SpecialSquawks = {
 };
 
 // Get current map settings
-var CenterLat, CenterLon, ZoomLvl;
+var CenterLat, CenterLon, ZoomLvl, MapType;
 
 var Dump1090Version = "unknown version";
 var RefreshInterval = 1000;
@@ -326,6 +326,7 @@ function initialize_map() {
         CenterLat = Number(localStorage['CenterLat']) || DefaultCenterLat;
         CenterLon = Number(localStorage['CenterLon']) || DefaultCenterLon;
         ZoomLvl = Number(localStorage['ZoomLvl']) || DefaultZoomLvl;
+        MapType = localStorage['MapType'];
 
         // Set SitePosition, initialize sorting
         if (SiteShow && (typeof SiteLat !==  'undefined') && (typeof SiteLon !==  'undefined')) {
@@ -346,27 +347,122 @@ function initialize_map() {
         }
 
 	// Initialize OL3
-        // TODO map types etc
 
-        var rasterLayer = new ol.layer.Tile({
+        var baseLayerGroups = {
-                source: new ol.source.OSM()
+                'world': new ol.layer.Group({
-        });
+                        title: 'Worldwide'
+                }),
 
-        var staticLayer = new ol.layer.Vector({
+                'chartbundle': new ol.layer.Group({
+                        title: 'ChartBundle (US)'
+                })
+        };
+
+        var baseLayers = []
+
+        baseLayers.push(new ol.layer.Tile({
+                source: new ol.source.OSM(),
+                name: 'osm',
+                title: 'OpenStreetMap',
+                type: 'base',
+                group: 'world'
+        }));
+
+        baseLayers.push(new ol.layer.Tile({
+                source: new ol.source.MapQuest({layer: 'sat'}),
+                name: 'mapquest_sat',
+                title: 'MapQuest satellite',
+                type: 'base',
+                group: 'world'
+        }));
+
+        if (BingMapsAPIKey) {
+                baseLayers.push(new ol.layer.Tile({
+                        source: new ol.source.BingMaps({
+                                key: BingMapsAPIKey,
+                                imagerySet: 'Aerial'
+                        }),
+                        name: 'bing_aerial',
+                        title: 'Bing Aerial',
+                        type: 'base',
+                        group: 'world'
+                }));
+        }
+
+        var chartbundleTypes = {
+                sec: "Sectional Charts",
+                tac: "Terminal Area Charts",
+                wac: "World Aeronautical Charts",
+                enrl: "IFR Enroute Low Charts",
+                enra: "IFR Area Charts",
+                enrh: "IFR Enroute High Charts"
+        };
+
+        for (var type in chartbundleTypes) {
+                baseLayers.push(new ol.layer.Tile({
+                        source: new ol.source.TileWMS({
+                                url: 'http://wms.chartbundle.com/wms',
+                                params: {LAYERS: type},
+                                projection: 'EPSG:3857',
+                                attributions: 'Tiles courtesy of <a href="http://www.chartbundle.com/">ChartBundle</a>'
+                        }),
+                        name: 'chartbundle_' + type,
+                        title: chartbundleTypes[type],
+                        type: 'base',
+                        group: 'chartbundle'}));
+        }
+
+        var layers = [];
+        var found = false;
+        for (var i = 0; i < baseLayers.length; ++i) {
+                var layer = baseLayers[i];
+                if (MapType === layer.get('name')) {
+                        found = true;
+                        layer.setVisible(true);
+                } else {
+                        layer.setVisible(false);
+                }
+
+                layer.on('change:visible', function(evt) {
+                        if (evt.target.getVisible()) {
+                                MapType = localStorage['MapType'] = evt.target.get('name');
+                        }
+                });
+
+                // The layer selector displays in reverse order for some reason, unreverse it
+                if (layer.get('group')) {
+                        // hurf
+                        baseLayerGroups[layer.get('group')].getLayers().insertAt(0, layer);
+                } else {
+                        layers.unshift(layer);
+                }
+        }
+
+        if (!found) {
+                baseLayers[0].setVisible(true);
+        }
+
+        for (var key in baseLayerGroups) {
+                if (baseLayerGroups[key].getLayers().getLength() > 0) {
+                        layers.unshift(baseLayerGroups[key]);
+                }
+        }
+
+        layers.push(new ol.layer.Vector({
                 source: new ol.source.Vector({
                         features: StaticFeatures,
                         updateWhileInteracting: true,
                         updateWhileAnimating: true
                 })
-        });
+        }));
 
-        var trailsLayer = new ol.layer.Vector({
+        layers.push(new ol.layer.Vector({
                 source: new ol.source.Vector({
                         features: PlaneTrailFeatures,
                         updateWhileInteracting: true,
                         updateWhileAnimating: true
                 })
-        });
+        }));
 
         var iconsLayer = new ol.layer.Vector({
                 source: new ol.source.Vector({
@@ -375,10 +471,11 @@ function initialize_map() {
                         updateWhileAnimating: true
                 })
         });
+        layers.push(iconsLayer);
 
 	OLMap = new ol.Map({
                 target: 'map_canvas',
-                layers: [rasterLayer, staticLayer, trailsLayer, iconsLayer],
+                layers: layers,
                 view: new ol.View({
                         center: ol.proj.fromLonLat([CenterLon, CenterLat]),
                         zoom: ZoomLvl
@@ -386,7 +483,9 @@ function initialize_map() {
                 controls: [new ol.control.Zoom(),
                            new ol.control.Rotate(),
                            new ol.control.Attribution(),
-                           new ol.control.ScaleLine({units: Metric ? "metric" : "nautical"})],
+                           new ol.control.ScaleLine({units: Metric ? "metric" : "nautical"}),
+                           new ol.control.LayerSwitcher()
+                          ],
                 loadTilesWhileAnimating: true,
                 loadTilesWhileInteracting: true
         });