https://www.queercitypass.com/wp-content/plugins/listeo-core/assets/js/leaflet-tilelayer-here.js?ver=1.2.1

1
2// 🍂class TileLayer.HERE
3// Tile layer for HERE maps tiles.
4L.TileLayer.HERE = L.TileLayer.extend({
5
6	options: {
7		subdomains: '1234',
8		minZoom: 2,
9		maxZoom: 18,
10
11		// 🍂option scheme: String = 'normal.day'
12		// The "map scheme", as documented in the HERE API.
13		scheme: 'normal.day',
14
15		// 🍂option resource: String = 'maptile'
16		// The "map resource", as documented in the HERE API.
17		resource: 'maptile',
18
19		// 🍂option mapId: String = 'newest'
20		// Version of the map tiles to be used, or a hash of an unique map
21		mapId: 'newest',
22
23		// 🍂option format: String = 'png8'
24		// Image format to be used (`png8`, `png`, or `jpg`)
25		format: 'png8',
26
27		// 🍂option appId: String = ''
28		// Required option. The `app_id` provided as part of the HERE credentials
29		appId: '',
30
31		// 🍂option appCode: String = ''
32		// Required option. The `app_code` provided as part of the HERE credentials
33		appCode: '',
34	},
35
36
37	initialize: function initialize(options) {
38		options = L.setOptions(this, options);
39
40		// Decide if this scheme uses the aerial servers or the basemap servers
41		var schemeStart = options.scheme.split('.')[0];
42		options.tileResolution = 256;
43
44		if (L.Browser.retina) {
45			options.tileResolution = 512;
46		}
47
48// 		{Base URL}{Path}/{resource (tile type)}/{map id}/{scheme}/{zoom}/{column}/{row}/{size}/{format}
49// 		?app_id={YOUR_APP_ID}
50// 		&app_code={YOUR_APP_CODE}
51// 		&{param}={value}
52
53		var path = '/{resource}/2.1/{resource}/{mapId}/{scheme}/{z}/{x}/{y}/{tileResolution}/{format}?app_id={appId}&app_code={appCode}';
54		var attributionPath = '/maptile/2.1/copyright/{mapId}?app_id={appId}&app_code={appCode}';
55
56		var tileServer = 'base.maps.api.here.com';
57		if (schemeStart == 'satellite' ||
58				schemeStart == 'terrain' ||
59				schemeStart == 'hybrid') {
60			tileServer = 'aerial.maps.api.here.com';
61		}
62		if (options.scheme.indexOf('.traffic.') !== -1) {
63			tileServer = 'traffic.maps.api.here.com';
64		}
65
66		var tileUrl = 'https://{s}.' + tileServer + path;
67
68		this._attributionUrl = L.Util.template('https://1.' + tileServer + attributionPath, this.options);
69
70		L.TileLayer.prototype.initialize.call(this, tileUrl, options);
71
72		this._attributionText = '';
73
74	},
75
76	onAdd: function onAdd(map) {
77		L.TileLayer.prototype.onAdd.call(this, map);
78
79		if (!this._attributionBBoxes) {
80			this._fetchAttributionBBoxes();
81		}
82	},
83
84	onRemove: function onRemove(map) {
85		L.TileLayer.prototype.onRemove.call(this, map);
86
87		this._map.attributionControl.removeAttribution(this._attributionText);
88
89		this._map.off('moveend zoomend resetview', this._findCopyrightBBox, this);
90	},
91
92	_fetchAttributionBBoxes: function _onMapMove() {
93		var xmlhttp = new XMLHttpRequest();
94		xmlhttp.onreadystatechange = L.bind(function(){
95			if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
96				this._parseAttributionBBoxes(JSON.parse(xmlhttp.responseText));
97			}
98		}, this);
99		xmlhttp.open("GET", this._attributionUrl, true);
100		xmlhttp.send();
101	},
102
103	_parseAttributionBBoxes: function _parseAttributionBBoxes(json) {
104		if (!this._map) { return; }
105		var providers = json[this.options.scheme.split('.')[0]] || json.normal;
106		for (var i=0; i<providers.length; i++) {
107			if (providers[i].boxes) {
108				for (var j=0; j<providers[i].boxes.length; j++) {
109					var box = providers[i].boxes[j];
110					providers[i].boxes[j] = L.latLngBounds( [ [box[0], box[1]], [box[2], box[3]] ]);
111				}
112			}
113		}
114
115		this._map.on('moveend zoomend resetview', this._findCopyrightBBox, this);
116
117		this._attributionProviders = providers;
118
119		this._findCopyrightBBox();
120	},
121
122	_findCopyrightBBox: function _findCopyrightBBox() {
123		if (!this._map) { return; }
124		var providers = this._attributionProviders;
125		var visibleProviders = [];
126		var zoom = this._map.getZoom();
127		var visibleBounds = this._map.getBounds();
128
129		for (var i=0; i<providers.length; i++) {
130			if (providers[i].minLevel < zoom && providers[i].maxLevel > zoom)
131
132			if (!providers[i].boxes) {
133				// No boxes = attribution always visible
134				visibleProviders.push(providers[i]);
135				break;
136			}
137
138			for (var j=0; j<providers[i].boxes.length; j++) {
139				var box = providers[i].boxes[j];
140				if (visibleBounds.overlaps(box)) {
141					visibleProviders.push(providers[i]);
142					break;
143				}
144			}
145		}
146
147		var attributions = ['<a href="https://legal.here.com/terms/serviceterms/gb/">HERE maps</a>'];
148		for (var i=0; i<visibleProviders.length; i++) {
149			var provider = visibleProviders[i];
150			attributions.push('<abbr title="' + provider.alt + '">' + provider.label + '</abbr>');
151		}
152
153		var attributionText = '© ' + attributions.join(', ') + '. ';
154
155		if (attributionText !== this._attributionText) {
156			this._map.attributionControl.removeAttribution(this._attributionText);
157			this._map.attributionControl.addAttribution(this._attributionText = attributionText);
158		}
159	},
160
161});
162
163
164L.tileLayer.here = function(opts){
165	return new L.TileLayer.HERE(opts);
166}