8949 lines
206 KiB
JavaScript
8949 lines
206 KiB
JavaScript
/*
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Leaflet 0.8-dev (06d354e), a JS library for interactive maps. http://leafletjs.com
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(c) 2010-2015 Vladimir Agafonkin, (c) 2010-2011 CloudMade
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*/
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(function (window, document, undefined) {
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var L = {
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version: '0.8-dev'
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};
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function expose() {
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var oldL = window.L;
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L.noConflict = function () {
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window.L = oldL;
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return this;
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};
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window.L = L;
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}
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// define Leaflet for Node module pattern loaders, including Browserify
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if (typeof module === 'object' && typeof module.exports === 'object') {
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module.exports = L;
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// define Leaflet as an AMD module
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} else if (typeof define === 'function' && define.amd) {
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define(L);
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}
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// define Leaflet as a global L variable, saving the original L to restore later if needed
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if (typeof window !== 'undefined') {
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expose();
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}
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/*
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* L.Util contains various utility functions used throughout Leaflet code.
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*/
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L.Util = {
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// extend an object with properties of one or more other objects
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extend: function (dest) {
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var i, j, len, src;
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for (j = 1, len = arguments.length; j < len; j++) {
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src = arguments[j];
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for (i in src) {
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dest[i] = src[i];
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}
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}
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return dest;
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},
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// create an object from a given prototype
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create: Object.create || (function () {
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function F() {}
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return function (proto) {
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F.prototype = proto;
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return new F();
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};
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})(),
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// bind a function to be called with a given context
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bind: function (fn, obj) {
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var slice = Array.prototype.slice;
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if (fn.bind) {
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return fn.bind.apply(fn, slice.call(arguments, 1));
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}
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var args = slice.call(arguments, 2);
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return function () {
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return fn.apply(obj, args.length ? args.concat(slice.call(arguments)) : arguments);
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};
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},
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// return unique ID of an object
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stamp: function (obj) {
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// jshint camelcase: false
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obj._leaflet_id = obj._leaflet_id || ++L.Util.lastId;
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return obj._leaflet_id;
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},
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lastId: 0,
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// return a function that won't be called more often than the given interval
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throttle: function (fn, time, context) {
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var lock, args, wrapperFn, later;
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later = function () {
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// reset lock and call if queued
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lock = false;
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if (args) {
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wrapperFn.apply(context, args);
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args = false;
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}
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};
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wrapperFn = function () {
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if (lock) {
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// called too soon, queue to call later
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args = arguments;
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} else {
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// call and lock until later
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fn.apply(context, arguments);
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setTimeout(later, time);
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lock = true;
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}
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};
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return wrapperFn;
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},
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// wrap the given number to lie within a certain range (used for wrapping longitude)
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wrapNum: function (x, range, includeMax) {
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var max = range[1],
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min = range[0],
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d = max - min;
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return x === max && includeMax ? x : ((x - min) % d + d) % d + min;
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},
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// do nothing (used as a noop throughout the code)
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falseFn: function () { return false; },
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// round a given number to a given precision
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formatNum: function (num, digits) {
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var pow = Math.pow(10, digits || 5);
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return Math.round(num * pow) / pow;
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},
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// trim whitespace from both sides of a string
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trim: function (str) {
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return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
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},
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// split a string into words
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splitWords: function (str) {
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return L.Util.trim(str).split(/\s+/);
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},
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// set options to an object, inheriting parent's options as well
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setOptions: function (obj, options) {
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if (!obj.hasOwnProperty('options')) {
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obj.options = obj.options ? L.Util.create(obj.options) : {};
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}
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for (var i in options) {
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obj.options[i] = options[i];
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}
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return obj.options;
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},
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// make an URL with GET parameters out of a set of properties/values
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getParamString: function (obj, existingUrl, uppercase) {
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var params = [];
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for (var i in obj) {
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params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
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}
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return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
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},
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// super-simple templating facility, used for TileLayer URLs
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template: function (str, data) {
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return str.replace(L.Util.templateRe, function (str, key) {
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var value = data[key];
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if (value === undefined) {
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throw new Error('No value provided for variable ' + str);
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} else if (typeof value === 'function') {
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value = value(data);
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}
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return value;
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});
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},
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templateRe: /\{ *([\w_]+) *\}/g,
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isArray: Array.isArray || function (obj) {
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return (Object.prototype.toString.call(obj) === '[object Array]');
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},
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// minimal image URI, set to an image when disposing to flush memory
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emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
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};
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(function () {
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// inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
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function getPrefixed(name) {
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return window['webkit' + name] || window['moz' + name] || window['ms' + name];
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}
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var lastTime = 0;
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// fallback for IE 7-8
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function timeoutDefer(fn) {
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var time = +new Date(),
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timeToCall = Math.max(0, 16 - (time - lastTime));
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lastTime = time + timeToCall;
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return window.setTimeout(fn, timeToCall);
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}
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var requestFn = window.requestAnimationFrame || getPrefixed('RequestAnimationFrame') || timeoutDefer,
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cancelFn = window.cancelAnimationFrame || getPrefixed('CancelAnimationFrame') ||
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getPrefixed('CancelRequestAnimationFrame') || function (id) { window.clearTimeout(id); };
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L.Util.requestAnimFrame = function (fn, context, immediate) {
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if (immediate && requestFn === timeoutDefer) {
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fn.call(context);
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} else {
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return requestFn.call(window, L.bind(fn, context));
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}
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};
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L.Util.cancelAnimFrame = function (id) {
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if (id) {
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cancelFn.call(window, id);
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}
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};
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})();
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// shortcuts for most used utility functions
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L.extend = L.Util.extend;
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L.bind = L.Util.bind;
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L.stamp = L.Util.stamp;
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L.setOptions = L.Util.setOptions;
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/*
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* L.Class powers the OOP facilities of the library.
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* Thanks to John Resig and Dean Edwards for inspiration!
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*/
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L.Class = function () {};
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L.Class.extend = function (props) {
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// extended class with the new prototype
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var NewClass = function () {
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// call the constructor
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if (this.initialize) {
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this.initialize.apply(this, arguments);
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}
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// call all constructor hooks
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this.callInitHooks();
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};
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// jshint camelcase: false
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var parentProto = NewClass.__super__ = this.prototype;
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var proto = L.Util.create(parentProto);
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proto.constructor = NewClass;
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NewClass.prototype = proto;
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//inherit parent's statics
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for (var i in this) {
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if (this.hasOwnProperty(i) && i !== 'prototype') {
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NewClass[i] = this[i];
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}
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}
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// mix static properties into the class
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if (props.statics) {
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L.extend(NewClass, props.statics);
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delete props.statics;
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}
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// mix includes into the prototype
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if (props.includes) {
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L.Util.extend.apply(null, [proto].concat(props.includes));
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delete props.includes;
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}
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// merge options
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if (proto.options) {
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props.options = L.Util.extend(L.Util.create(proto.options), props.options);
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}
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// mix given properties into the prototype
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L.extend(proto, props);
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proto._initHooks = [];
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// add method for calling all hooks
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proto.callInitHooks = function () {
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if (this._initHooksCalled) { return; }
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if (parentProto.callInitHooks) {
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parentProto.callInitHooks.call(this);
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}
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this._initHooksCalled = true;
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for (var i = 0, len = proto._initHooks.length; i < len; i++) {
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proto._initHooks[i].call(this);
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}
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};
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return NewClass;
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};
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// method for adding properties to prototype
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L.Class.include = function (props) {
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L.extend(this.prototype, props);
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};
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// merge new default options to the Class
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L.Class.mergeOptions = function (options) {
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L.extend(this.prototype.options, options);
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};
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// add a constructor hook
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L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
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var args = Array.prototype.slice.call(arguments, 1);
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var init = typeof fn === 'function' ? fn : function () {
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this[fn].apply(this, args);
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};
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this.prototype._initHooks = this.prototype._initHooks || [];
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this.prototype._initHooks.push(init);
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};
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/*
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* L.Evented is a base class that Leaflet classes inherit from to handle custom events.
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*/
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L.Evented = L.Class.extend({
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on: function (types, fn, context) {
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// types can be a map of types/handlers
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if (typeof types === 'object') {
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for (var type in types) {
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// we don't process space-separated events here for performance;
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// it's a hot path since Layer uses the on(obj) syntax
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this._on(type, types[type], fn);
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}
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} else {
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// types can be a string of space-separated words
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types = L.Util.splitWords(types);
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for (var i = 0, len = types.length; i < len; i++) {
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this._on(types[i], fn, context);
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}
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}
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return this;
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},
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off: function (types, fn, context) {
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if (!types) {
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// clear all listeners if called without arguments
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delete this._events;
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} else if (typeof types === 'object') {
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for (var type in types) {
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this._off(type, types[type], fn);
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}
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} else {
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types = L.Util.splitWords(types);
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for (var i = 0, len = types.length; i < len; i++) {
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this._off(types[i], fn, context);
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}
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}
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return this;
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},
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// attach listener (without syntactic sugar now)
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_on: function (type, fn, context) {
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var events = this._events = this._events || {},
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contextId = context && context !== this && L.stamp(context);
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if (contextId) {
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// store listeners with custom context in a separate hash (if it has an id);
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// gives a major performance boost when firing and removing events (e.g. on map object)
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var indexKey = type + '_idx',
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indexLenKey = type + '_len',
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typeIndex = events[indexKey] = events[indexKey] || {},
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id = L.stamp(fn) + '_' + contextId;
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if (!typeIndex[id]) {
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typeIndex[id] = {fn: fn, ctx: context};
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// keep track of the number of keys in the index to quickly check if it's empty
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events[indexLenKey] = (events[indexLenKey] || 0) + 1;
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}
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} else {
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// individual layers mostly use "this" for context and don't fire listeners too often
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// so simple array makes the memory footprint better while not degrading performance
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events[type] = events[type] || [];
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events[type].push({fn: fn});
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}
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},
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_off: function (type, fn, context) {
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var events = this._events,
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indexKey = type + '_idx',
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indexLenKey = type + '_len';
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if (!events) { return; }
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if (!fn) {
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// clear all listeners for a type if function isn't specified
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delete events[type];
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delete events[indexKey];
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delete events[indexLenKey];
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return;
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}
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var contextId = context && context !== this && L.stamp(context),
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listeners, i, len, listener, id;
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if (contextId) {
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id = L.stamp(fn) + '_' + contextId;
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listeners = events[indexKey];
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if (listeners && listeners[id]) {
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listener = listeners[id];
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delete listeners[id];
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events[indexLenKey]--;
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}
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} else {
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listeners = events[type];
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if (listeners) {
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for (i = 0, len = listeners.length; i < len; i++) {
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if (listeners[i].fn === fn) {
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listener = listeners[i];
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listeners.splice(i, 1);
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break;
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}
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}
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}
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}
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// set the removed listener to noop so that's not called if remove happens in fire
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if (listener) {
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listener.fn = L.Util.falseFn;
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}
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},
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fire: function (type, data, propagate) {
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if (!this.listens(type, propagate)) { return this; }
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var event = L.Util.extend({}, data, {type: type, target: this}),
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events = this._events;
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if (events) {
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var typeIndex = events[type + '_idx'],
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i, len, listeners, id;
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if (events[type]) {
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// make sure adding/removing listeners inside other listeners won't cause infinite loop
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listeners = events[type].slice();
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for (i = 0, len = listeners.length; i < len; i++) {
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listeners[i].fn.call(this, event);
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}
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}
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// fire event for the context-indexed listeners as well
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for (id in typeIndex) {
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typeIndex[id].fn.call(typeIndex[id].ctx, event);
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}
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}
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if (propagate) {
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// propagate the event to parents (set with addEventParent)
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this._propagateEvent(event);
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}
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return this;
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},
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listens: function (type, propagate) {
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var events = this._events;
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if (events && (events[type] || events[type + '_len'])) { return true; }
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if (propagate) {
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// also check parents for listeners if event propagates
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for (var id in this._eventParents) {
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if (this._eventParents[id].listens(type, propagate)) { return true; }
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}
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}
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return false;
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},
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once: function (types, fn, context) {
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if (typeof types === 'object') {
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for (var type in types) {
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this.once(type, types[type], fn);
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}
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return this;
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}
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var handler = L.bind(function () {
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this
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.off(types, fn, context)
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.off(types, handler, context);
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}, this);
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// add a listener that's executed once and removed after that
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return this
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.on(types, fn, context)
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.on(types, handler, context);
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},
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// adds a parent to propagate events to (when you fire with true as a 3rd argument)
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addEventParent: function (obj) {
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this._eventParents = this._eventParents || {};
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this._eventParents[L.stamp(obj)] = obj;
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return this;
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},
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removeEventParent: function (obj) {
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if (this._eventParents) {
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delete this._eventParents[L.stamp(obj)];
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}
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return this;
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},
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_propagateEvent: function (e) {
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for (var id in this._eventParents) {
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this._eventParents[id].fire(e.type, L.extend({layer: e.target}, e), true);
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}
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}
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});
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var proto = L.Evented.prototype;
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// aliases; we should ditch those eventually
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proto.addEventListener = proto.on;
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proto.removeEventListener = proto.clearAllEventListeners = proto.off;
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proto.addOneTimeEventListener = proto.once;
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proto.fireEvent = proto.fire;
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proto.hasEventListeners = proto.listens;
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L.Mixin = {Events: proto};
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/*
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* L.Browser handles different browser and feature detections for internal Leaflet use.
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*/
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(function () {
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var ua = navigator.userAgent.toLowerCase(),
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doc = document.documentElement,
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ie = 'ActiveXObject' in window,
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webkit = ua.indexOf('webkit') !== -1,
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phantomjs = ua.indexOf('phantom') !== -1,
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android23 = ua.search('android [23]') !== -1,
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chrome = ua.indexOf('chrome') !== -1,
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mobile = typeof orientation !== 'undefined',
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msPointer = navigator.msPointerEnabled && navigator.msMaxTouchPoints && !window.PointerEvent,
|
|
pointer = (window.PointerEvent && navigator.pointerEnabled && navigator.maxTouchPoints) || msPointer,
|
|
|
|
ie3d = ie && ('transition' in doc.style),
|
|
webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23,
|
|
gecko3d = 'MozPerspective' in doc.style,
|
|
opera3d = 'OTransition' in doc.style;
|
|
|
|
var touch = !window.L_NO_TOUCH && !phantomjs && (pointer || 'ontouchstart' in window ||
|
|
(window.DocumentTouch && document instanceof window.DocumentTouch));
|
|
|
|
L.Browser = {
|
|
ie: ie,
|
|
ielt9: ie && !document.addEventListener,
|
|
webkit: webkit,
|
|
gecko: (ua.indexOf('gecko') !== -1) && !webkit && !window.opera && !ie,
|
|
android: ua.indexOf('android') !== -1,
|
|
android23: android23,
|
|
chrome: chrome,
|
|
safari: !chrome && ua.indexOf('safari') !== -1,
|
|
|
|
ie3d: ie3d,
|
|
webkit3d: webkit3d,
|
|
gecko3d: gecko3d,
|
|
opera3d: opera3d,
|
|
any3d: !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs,
|
|
|
|
mobile: mobile,
|
|
mobileWebkit: mobile && webkit,
|
|
mobileWebkit3d: mobile && webkit3d,
|
|
mobileOpera: mobile && window.opera,
|
|
|
|
touch: !!touch,
|
|
msPointer: !!msPointer,
|
|
pointer: !!pointer,
|
|
|
|
retina: (window.devicePixelRatio || (window.screen.deviceXDPI / window.screen.logicalXDPI)) > 1
|
|
};
|
|
|
|
}());
|
|
|
|
|
|
/*
|
|
* L.Point represents a point with x and y coordinates.
|
|
*/
|
|
|
|
L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
|
|
this.x = (round ? Math.round(x) : x);
|
|
this.y = (round ? Math.round(y) : y);
|
|
};
|
|
|
|
L.Point.prototype = {
|
|
|
|
clone: function () {
|
|
return new L.Point(this.x, this.y);
|
|
},
|
|
|
|
// non-destructive, returns a new point
|
|
add: function (point) {
|
|
return this.clone()._add(L.point(point));
|
|
},
|
|
|
|
// destructive, used directly for performance in situations where it's safe to modify existing point
|
|
_add: function (point) {
|
|
this.x += point.x;
|
|
this.y += point.y;
|
|
return this;
|
|
},
|
|
|
|
subtract: function (point) {
|
|
return this.clone()._subtract(L.point(point));
|
|
},
|
|
|
|
_subtract: function (point) {
|
|
this.x -= point.x;
|
|
this.y -= point.y;
|
|
return this;
|
|
},
|
|
|
|
divideBy: function (num) {
|
|
return this.clone()._divideBy(num);
|
|
},
|
|
|
|
_divideBy: function (num) {
|
|
this.x /= num;
|
|
this.y /= num;
|
|
return this;
|
|
},
|
|
|
|
multiplyBy: function (num) {
|
|
return this.clone()._multiplyBy(num);
|
|
},
|
|
|
|
_multiplyBy: function (num) {
|
|
this.x *= num;
|
|
this.y *= num;
|
|
return this;
|
|
},
|
|
|
|
round: function () {
|
|
return this.clone()._round();
|
|
},
|
|
|
|
_round: function () {
|
|
this.x = Math.round(this.x);
|
|
this.y = Math.round(this.y);
|
|
return this;
|
|
},
|
|
|
|
floor: function () {
|
|
return this.clone()._floor();
|
|
},
|
|
|
|
_floor: function () {
|
|
this.x = Math.floor(this.x);
|
|
this.y = Math.floor(this.y);
|
|
return this;
|
|
},
|
|
|
|
ceil: function () {
|
|
return this.clone()._ceil();
|
|
},
|
|
|
|
_ceil: function () {
|
|
this.x = Math.ceil(this.x);
|
|
this.y = Math.ceil(this.y);
|
|
return this;
|
|
},
|
|
|
|
distanceTo: function (point) {
|
|
point = L.point(point);
|
|
|
|
var x = point.x - this.x,
|
|
y = point.y - this.y;
|
|
|
|
return Math.sqrt(x * x + y * y);
|
|
},
|
|
|
|
equals: function (point) {
|
|
point = L.point(point);
|
|
|
|
return point.x === this.x &&
|
|
point.y === this.y;
|
|
},
|
|
|
|
contains: function (point) {
|
|
point = L.point(point);
|
|
|
|
return Math.abs(point.x) <= Math.abs(this.x) &&
|
|
Math.abs(point.y) <= Math.abs(this.y);
|
|
},
|
|
|
|
toString: function () {
|
|
return 'Point(' +
|
|
L.Util.formatNum(this.x) + ', ' +
|
|
L.Util.formatNum(this.y) + ')';
|
|
}
|
|
};
|
|
|
|
L.point = function (x, y, round) {
|
|
if (x instanceof L.Point) {
|
|
return x;
|
|
}
|
|
if (L.Util.isArray(x)) {
|
|
return new L.Point(x[0], x[1]);
|
|
}
|
|
if (x === undefined || x === null) {
|
|
return x;
|
|
}
|
|
return new L.Point(x, y, round);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Bounds represents a rectangular area on the screen in pixel coordinates.
|
|
*/
|
|
|
|
L.Bounds = function (a, b) { //(Point, Point) or Point[]
|
|
if (!a) { return; }
|
|
|
|
var points = b ? [a, b] : a;
|
|
|
|
for (var i = 0, len = points.length; i < len; i++) {
|
|
this.extend(points[i]);
|
|
}
|
|
};
|
|
|
|
L.Bounds.prototype = {
|
|
// extend the bounds to contain the given point
|
|
extend: function (point) { // (Point)
|
|
point = L.point(point);
|
|
|
|
if (!this.min && !this.max) {
|
|
this.min = point.clone();
|
|
this.max = point.clone();
|
|
} else {
|
|
this.min.x = Math.min(point.x, this.min.x);
|
|
this.max.x = Math.max(point.x, this.max.x);
|
|
this.min.y = Math.min(point.y, this.min.y);
|
|
this.max.y = Math.max(point.y, this.max.y);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getCenter: function (round) { // (Boolean) -> Point
|
|
return new L.Point(
|
|
(this.min.x + this.max.x) / 2,
|
|
(this.min.y + this.max.y) / 2, round);
|
|
},
|
|
|
|
getBottomLeft: function () { // -> Point
|
|
return new L.Point(this.min.x, this.max.y);
|
|
},
|
|
|
|
getTopRight: function () { // -> Point
|
|
return new L.Point(this.max.x, this.min.y);
|
|
},
|
|
|
|
getSize: function () {
|
|
return this.max.subtract(this.min);
|
|
},
|
|
|
|
contains: function (obj) { // (Bounds) or (Point) -> Boolean
|
|
var min, max;
|
|
|
|
if (typeof obj[0] === 'number' || obj instanceof L.Point) {
|
|
obj = L.point(obj);
|
|
} else {
|
|
obj = L.bounds(obj);
|
|
}
|
|
|
|
if (obj instanceof L.Bounds) {
|
|
min = obj.min;
|
|
max = obj.max;
|
|
} else {
|
|
min = max = obj;
|
|
}
|
|
|
|
return (min.x >= this.min.x) &&
|
|
(max.x <= this.max.x) &&
|
|
(min.y >= this.min.y) &&
|
|
(max.y <= this.max.y);
|
|
},
|
|
|
|
intersects: function (bounds) { // (Bounds) -> Boolean
|
|
bounds = L.bounds(bounds);
|
|
|
|
var min = this.min,
|
|
max = this.max,
|
|
min2 = bounds.min,
|
|
max2 = bounds.max,
|
|
xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
|
|
yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
|
|
|
|
return xIntersects && yIntersects;
|
|
},
|
|
|
|
isValid: function () {
|
|
return !!(this.min && this.max);
|
|
}
|
|
};
|
|
|
|
L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
|
|
if (!a || a instanceof L.Bounds) {
|
|
return a;
|
|
}
|
|
return new L.Bounds(a, b);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
|
|
*/
|
|
|
|
L.Transformation = function (a, b, c, d) {
|
|
this._a = a;
|
|
this._b = b;
|
|
this._c = c;
|
|
this._d = d;
|
|
};
|
|
|
|
L.Transformation.prototype = {
|
|
transform: function (point, scale) { // (Point, Number) -> Point
|
|
return this._transform(point.clone(), scale);
|
|
},
|
|
|
|
// destructive transform (faster)
|
|
_transform: function (point, scale) {
|
|
scale = scale || 1;
|
|
point.x = scale * (this._a * point.x + this._b);
|
|
point.y = scale * (this._c * point.y + this._d);
|
|
return point;
|
|
},
|
|
|
|
untransform: function (point, scale) {
|
|
scale = scale || 1;
|
|
return new L.Point(
|
|
(point.x / scale - this._b) / this._a,
|
|
(point.y / scale - this._d) / this._c);
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
* L.DomUtil contains various utility functions for working with DOM.
|
|
*/
|
|
|
|
L.DomUtil = {
|
|
get: function (id) {
|
|
return typeof id === 'string' ? document.getElementById(id) : id;
|
|
},
|
|
|
|
getStyle: function (el, style) {
|
|
|
|
var value = el.style[style] || (el.currentStyle && el.currentStyle[style]);
|
|
|
|
if ((!value || value === 'auto') && document.defaultView) {
|
|
var css = document.defaultView.getComputedStyle(el, null);
|
|
value = css ? css[style] : null;
|
|
}
|
|
|
|
return value === 'auto' ? null : value;
|
|
},
|
|
|
|
create: function (tagName, className, container) {
|
|
|
|
var el = document.createElement(tagName);
|
|
el.className = className;
|
|
|
|
if (container) {
|
|
container.appendChild(el);
|
|
}
|
|
|
|
return el;
|
|
},
|
|
|
|
remove: function (el) {
|
|
var parent = el.parentNode;
|
|
if (parent) {
|
|
parent.removeChild(el);
|
|
}
|
|
},
|
|
|
|
empty: function (el) {
|
|
while (el.firstChild) {
|
|
el.removeChild(el.firstChild);
|
|
}
|
|
},
|
|
|
|
toFront: function (el) {
|
|
el.parentNode.appendChild(el);
|
|
},
|
|
|
|
toBack: function (el) {
|
|
var parent = el.parentNode;
|
|
parent.insertBefore(el, parent.firstChild);
|
|
},
|
|
|
|
hasClass: function (el, name) {
|
|
if (el.classList !== undefined) {
|
|
return el.classList.contains(name);
|
|
}
|
|
var className = L.DomUtil.getClass(el);
|
|
return className.length > 0 && new RegExp('(^|\\s)' + name + '(\\s|$)').test(className);
|
|
},
|
|
|
|
addClass: function (el, name) {
|
|
if (el.classList !== undefined) {
|
|
var classes = L.Util.splitWords(name);
|
|
for (var i = 0, len = classes.length; i < len; i++) {
|
|
el.classList.add(classes[i]);
|
|
}
|
|
} else if (!L.DomUtil.hasClass(el, name)) {
|
|
var className = L.DomUtil.getClass(el);
|
|
L.DomUtil.setClass(el, (className ? className + ' ' : '') + name);
|
|
}
|
|
},
|
|
|
|
removeClass: function (el, name) {
|
|
if (el.classList !== undefined) {
|
|
el.classList.remove(name);
|
|
} else {
|
|
L.DomUtil.setClass(el, L.Util.trim((' ' + L.DomUtil.getClass(el) + ' ').replace(' ' + name + ' ', ' ')));
|
|
}
|
|
},
|
|
|
|
setClass: function (el, name) {
|
|
if (el.className.baseVal === undefined) {
|
|
el.className = name;
|
|
} else {
|
|
// in case of SVG element
|
|
el.className.baseVal = name;
|
|
}
|
|
},
|
|
|
|
getClass: function (el) {
|
|
return el.className.baseVal === undefined ? el.className : el.className.baseVal;
|
|
},
|
|
|
|
setOpacity: function (el, value) {
|
|
|
|
if ('opacity' in el.style) {
|
|
el.style.opacity = value;
|
|
|
|
} else if ('filter' in el.style) {
|
|
|
|
var filter = false,
|
|
filterName = 'DXImageTransform.Microsoft.Alpha';
|
|
|
|
// filters collection throws an error if we try to retrieve a filter that doesn't exist
|
|
try {
|
|
filter = el.filters.item(filterName);
|
|
} catch (e) {
|
|
// don't set opacity to 1 if we haven't already set an opacity,
|
|
// it isn't needed and breaks transparent pngs.
|
|
if (value === 1) { return; }
|
|
}
|
|
|
|
value = Math.round(value * 100);
|
|
|
|
if (filter) {
|
|
filter.Enabled = (value !== 100);
|
|
filter.Opacity = value;
|
|
} else {
|
|
el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
|
|
}
|
|
}
|
|
},
|
|
|
|
testProp: function (props) {
|
|
|
|
var style = document.documentElement.style;
|
|
|
|
for (var i = 0; i < props.length; i++) {
|
|
if (props[i] in style) {
|
|
return props[i];
|
|
}
|
|
}
|
|
return false;
|
|
},
|
|
|
|
setTransform: function (el, offset, scale) {
|
|
var pos = offset || new L.Point(0, 0);
|
|
|
|
el.style[L.DomUtil.TRANSFORM] =
|
|
'translate3d(' + pos.x + 'px,' + pos.y + 'px' + ',0)' + (scale ? ' scale(' + scale + ')' : '');
|
|
},
|
|
|
|
setPosition: function (el, point, no3d) { // (HTMLElement, Point[, Boolean])
|
|
|
|
// jshint camelcase: false
|
|
el._leaflet_pos = point;
|
|
|
|
if (L.Browser.any3d && !no3d) {
|
|
L.DomUtil.setTransform(el, point);
|
|
} else {
|
|
el.style.left = point.x + 'px';
|
|
el.style.top = point.y + 'px';
|
|
}
|
|
},
|
|
|
|
getPosition: function (el) {
|
|
// this method is only used for elements previously positioned using setPosition,
|
|
// so it's safe to cache the position for performance
|
|
|
|
// jshint camelcase: false
|
|
return el._leaflet_pos;
|
|
}
|
|
};
|
|
|
|
|
|
(function () {
|
|
// prefix style property names
|
|
|
|
L.DomUtil.TRANSFORM = L.DomUtil.testProp(
|
|
['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
|
|
|
|
|
|
// webkitTransition comes first because some browser versions that drop vendor prefix don't do
|
|
// the same for the transitionend event, in particular the Android 4.1 stock browser
|
|
|
|
var transition = L.DomUtil.TRANSITION = L.DomUtil.testProp(
|
|
['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
|
|
|
|
L.DomUtil.TRANSITION_END =
|
|
transition === 'webkitTransition' || transition === 'OTransition' ? transition + 'End' : 'transitionend';
|
|
|
|
|
|
if ('onselectstart' in document) {
|
|
L.DomUtil.disableTextSelection = function () {
|
|
L.DomEvent.on(window, 'selectstart', L.DomEvent.preventDefault);
|
|
};
|
|
L.DomUtil.enableTextSelection = function () {
|
|
L.DomEvent.off(window, 'selectstart', L.DomEvent.preventDefault);
|
|
};
|
|
|
|
} else {
|
|
var userSelectProperty = L.DomUtil.testProp(
|
|
['userSelect', 'WebkitUserSelect', 'OUserSelect', 'MozUserSelect', 'msUserSelect']);
|
|
|
|
L.DomUtil.disableTextSelection = function () {
|
|
if (userSelectProperty) {
|
|
var style = document.documentElement.style;
|
|
this._userSelect = style[userSelectProperty];
|
|
style[userSelectProperty] = 'none';
|
|
}
|
|
};
|
|
L.DomUtil.enableTextSelection = function () {
|
|
if (userSelectProperty) {
|
|
document.documentElement.style[userSelectProperty] = this._userSelect;
|
|
delete this._userSelect;
|
|
}
|
|
};
|
|
}
|
|
|
|
L.DomUtil.disableImageDrag = function () {
|
|
L.DomEvent.on(window, 'dragstart', L.DomEvent.preventDefault);
|
|
};
|
|
L.DomUtil.enableImageDrag = function () {
|
|
L.DomEvent.off(window, 'dragstart', L.DomEvent.preventDefault);
|
|
};
|
|
})();
|
|
|
|
|
|
/*
|
|
* L.LatLng represents a geographical point with latitude and longitude coordinates.
|
|
*/
|
|
|
|
L.LatLng = function (lat, lng, alt) {
|
|
if (isNaN(lat) || isNaN(lng)) {
|
|
throw new Error('Invalid LatLng object: (' + lat + ', ' + lng + ')');
|
|
}
|
|
|
|
this.lat = +lat;
|
|
this.lng = +lng;
|
|
|
|
if (alt !== undefined) {
|
|
this.alt = +alt;
|
|
}
|
|
};
|
|
|
|
L.LatLng.prototype = {
|
|
equals: function (obj, maxMargin) {
|
|
if (!obj) { return false; }
|
|
|
|
obj = L.latLng(obj);
|
|
|
|
var margin = Math.max(
|
|
Math.abs(this.lat - obj.lat),
|
|
Math.abs(this.lng - obj.lng));
|
|
|
|
return margin <= (maxMargin === undefined ? 1.0E-9 : maxMargin);
|
|
},
|
|
|
|
toString: function (precision) {
|
|
return 'LatLng(' +
|
|
L.Util.formatNum(this.lat, precision) + ', ' +
|
|
L.Util.formatNum(this.lng, precision) + ')';
|
|
},
|
|
|
|
distanceTo: function (other) {
|
|
return L.CRS.Earth.distance(this, L.latLng(other));
|
|
},
|
|
|
|
wrap: function () {
|
|
return L.CRS.Earth.wrapLatLng(this);
|
|
},
|
|
|
|
toBounds: function (sizeInMeters) {
|
|
var latAccuracy = 180 * sizeInMeters / 40075017,
|
|
lngAccuracy = latAccuracy / Math.cos((Math.PI / 180) * this.lat);
|
|
|
|
return L.latLngBounds(
|
|
[this.lat - latAccuracy, this.lng - lngAccuracy],
|
|
[this.lat + latAccuracy, this.lng + lngAccuracy]);
|
|
}
|
|
};
|
|
|
|
|
|
// constructs LatLng with different signatures
|
|
// (LatLng) or ([Number, Number]) or (Number, Number) or (Object)
|
|
|
|
L.latLng = function (a, b, c) {
|
|
if (a instanceof L.LatLng) {
|
|
return a;
|
|
}
|
|
if (L.Util.isArray(a) && typeof a[0] !== 'object') {
|
|
if (a.length === 3) {
|
|
return new L.LatLng(a[0], a[1], a[2]);
|
|
}
|
|
if (a.length === 2) {
|
|
return new L.LatLng(a[0], a[1]);
|
|
}
|
|
return null;
|
|
}
|
|
if (a === undefined || a === null) {
|
|
return a;
|
|
}
|
|
if (typeof a === 'object' && 'lat' in a) {
|
|
return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon, a.alt);
|
|
}
|
|
if (b === undefined) {
|
|
return null;
|
|
}
|
|
return new L.LatLng(a, b, c);
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
* L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
|
|
*/
|
|
|
|
L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
|
|
if (!southWest) { return; }
|
|
|
|
var latlngs = northEast ? [southWest, northEast] : southWest;
|
|
|
|
for (var i = 0, len = latlngs.length; i < len; i++) {
|
|
this.extend(latlngs[i]);
|
|
}
|
|
};
|
|
|
|
L.LatLngBounds.prototype = {
|
|
|
|
// extend the bounds to contain the given point or bounds
|
|
extend: function (obj) { // (LatLng) or (LatLngBounds)
|
|
var sw = this._southWest,
|
|
ne = this._northEast,
|
|
sw2, ne2;
|
|
|
|
if (obj instanceof L.LatLng) {
|
|
sw2 = obj;
|
|
ne2 = obj;
|
|
|
|
} else if (obj instanceof L.LatLngBounds) {
|
|
sw2 = obj._southWest;
|
|
ne2 = obj._northEast;
|
|
|
|
if (!sw2 || !ne2) { return this; }
|
|
|
|
} else {
|
|
return obj ? this.extend(L.latLng(obj) || L.latLngBounds(obj)) : this;
|
|
}
|
|
|
|
if (!sw && !ne) {
|
|
this._southWest = new L.LatLng(sw2.lat, sw2.lng);
|
|
this._northEast = new L.LatLng(ne2.lat, ne2.lng);
|
|
} else {
|
|
sw.lat = Math.min(sw2.lat, sw.lat);
|
|
sw.lng = Math.min(sw2.lng, sw.lng);
|
|
ne.lat = Math.max(ne2.lat, ne.lat);
|
|
ne.lng = Math.max(ne2.lng, ne.lng);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
// extend the bounds by a percentage
|
|
pad: function (bufferRatio) { // (Number) -> LatLngBounds
|
|
var sw = this._southWest,
|
|
ne = this._northEast,
|
|
heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
|
|
widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
|
|
|
|
return new L.LatLngBounds(
|
|
new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
|
|
new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
|
|
},
|
|
|
|
getCenter: function () { // -> LatLng
|
|
return new L.LatLng(
|
|
(this._southWest.lat + this._northEast.lat) / 2,
|
|
(this._southWest.lng + this._northEast.lng) / 2);
|
|
},
|
|
|
|
getSouthWest: function () {
|
|
return this._southWest;
|
|
},
|
|
|
|
getNorthEast: function () {
|
|
return this._northEast;
|
|
},
|
|
|
|
getNorthWest: function () {
|
|
return new L.LatLng(this.getNorth(), this.getWest());
|
|
},
|
|
|
|
getSouthEast: function () {
|
|
return new L.LatLng(this.getSouth(), this.getEast());
|
|
},
|
|
|
|
getWest: function () {
|
|
return this._southWest.lng;
|
|
},
|
|
|
|
getSouth: function () {
|
|
return this._southWest.lat;
|
|
},
|
|
|
|
getEast: function () {
|
|
return this._northEast.lng;
|
|
},
|
|
|
|
getNorth: function () {
|
|
return this._northEast.lat;
|
|
},
|
|
|
|
contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
|
|
if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
|
|
obj = L.latLng(obj);
|
|
} else {
|
|
obj = L.latLngBounds(obj);
|
|
}
|
|
|
|
var sw = this._southWest,
|
|
ne = this._northEast,
|
|
sw2, ne2;
|
|
|
|
if (obj instanceof L.LatLngBounds) {
|
|
sw2 = obj.getSouthWest();
|
|
ne2 = obj.getNorthEast();
|
|
} else {
|
|
sw2 = ne2 = obj;
|
|
}
|
|
|
|
return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
|
|
(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
|
|
},
|
|
|
|
intersects: function (bounds) { // (LatLngBounds)
|
|
bounds = L.latLngBounds(bounds);
|
|
|
|
var sw = this._southWest,
|
|
ne = this._northEast,
|
|
sw2 = bounds.getSouthWest(),
|
|
ne2 = bounds.getNorthEast(),
|
|
|
|
latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
|
|
lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
|
|
|
|
return latIntersects && lngIntersects;
|
|
},
|
|
|
|
toBBoxString: function () {
|
|
return [this.getWest(), this.getSouth(), this.getEast(), this.getNorth()].join(',');
|
|
},
|
|
|
|
equals: function (bounds) { // (LatLngBounds)
|
|
if (!bounds) { return false; }
|
|
|
|
bounds = L.latLngBounds(bounds);
|
|
|
|
return this._southWest.equals(bounds.getSouthWest()) &&
|
|
this._northEast.equals(bounds.getNorthEast());
|
|
},
|
|
|
|
isValid: function () {
|
|
return !!(this._southWest && this._northEast);
|
|
}
|
|
};
|
|
|
|
//TODO International date line?
|
|
|
|
L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
|
|
if (!a || a instanceof L.LatLngBounds) {
|
|
return a;
|
|
}
|
|
return new L.LatLngBounds(a, b);
|
|
};
|
|
|
|
|
|
/*
|
|
* Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
|
|
*/
|
|
|
|
L.Projection = {};
|
|
|
|
L.Projection.LonLat = {
|
|
project: function (latlng) {
|
|
return new L.Point(latlng.lng, latlng.lat);
|
|
},
|
|
|
|
unproject: function (point) {
|
|
return new L.LatLng(point.y, point.x);
|
|
},
|
|
|
|
bounds: L.bounds([-180, -90], [180, 90])
|
|
};
|
|
|
|
|
|
/*
|
|
* Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
|
|
*/
|
|
|
|
L.Projection.SphericalMercator = {
|
|
|
|
R: 6378137,
|
|
|
|
project: function (latlng) {
|
|
var d = Math.PI / 180,
|
|
max = 1 - 1E-15,
|
|
sin = Math.max(Math.min(Math.sin(latlng.lat * d), max), -max);
|
|
|
|
return new L.Point(
|
|
this.R * latlng.lng * d,
|
|
this.R * Math.log((1 + sin) / (1 - sin)) / 2);
|
|
},
|
|
|
|
unproject: function (point) {
|
|
var d = 180 / Math.PI;
|
|
|
|
return new L.LatLng(
|
|
(2 * Math.atan(Math.exp(point.y / this.R)) - (Math.PI / 2)) * d,
|
|
point.x * d / this.R);
|
|
},
|
|
|
|
bounds: (function () {
|
|
var d = 6378137 * Math.PI;
|
|
return L.bounds([-d, -d], [d, d]);
|
|
})()
|
|
};
|
|
|
|
|
|
/*
|
|
* L.CRS is the base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
|
|
*/
|
|
|
|
L.CRS = {
|
|
// converts geo coords to pixel ones
|
|
latLngToPoint: function (latlng, zoom) {
|
|
var projectedPoint = this.projection.project(latlng),
|
|
scale = this.scale(zoom);
|
|
|
|
return this.transformation._transform(projectedPoint, scale);
|
|
},
|
|
|
|
// converts pixel coords to geo coords
|
|
pointToLatLng: function (point, zoom) {
|
|
var scale = this.scale(zoom),
|
|
untransformedPoint = this.transformation.untransform(point, scale);
|
|
|
|
return this.projection.unproject(untransformedPoint);
|
|
},
|
|
|
|
// converts geo coords to projection-specific coords (e.g. in meters)
|
|
project: function (latlng) {
|
|
return this.projection.project(latlng);
|
|
},
|
|
|
|
// converts projected coords to geo coords
|
|
unproject: function (point) {
|
|
return this.projection.unproject(point);
|
|
},
|
|
|
|
// defines how the world scales with zoom
|
|
scale: function (zoom) {
|
|
return 256 * Math.pow(2, zoom);
|
|
},
|
|
|
|
// returns the bounds of the world in projected coords if applicable
|
|
getProjectedBounds: function (zoom) {
|
|
if (this.infinite) { return null; }
|
|
|
|
var b = this.projection.bounds,
|
|
s = this.scale(zoom),
|
|
min = this.transformation.transform(b.min, s),
|
|
max = this.transformation.transform(b.max, s);
|
|
|
|
return L.bounds(min, max);
|
|
},
|
|
|
|
// whether a coordinate axis wraps in a given range (e.g. longitude from -180 to 180); depends on CRS
|
|
// wrapLng: [min, max],
|
|
// wrapLat: [min, max],
|
|
|
|
// if true, the coordinate space will be unbounded (infinite in all directions)
|
|
// infinite: false,
|
|
|
|
// wraps geo coords in certain ranges if applicable
|
|
wrapLatLng: function (latlng) {
|
|
var lng = this.wrapLng ? L.Util.wrapNum(latlng.lng, this.wrapLng, true) : latlng.lng,
|
|
lat = this.wrapLat ? L.Util.wrapNum(latlng.lat, this.wrapLat, true) : latlng.lat;
|
|
|
|
return L.latLng(lat, lng);
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
* A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
|
|
*/
|
|
|
|
L.CRS.Simple = L.extend({}, L.CRS, {
|
|
projection: L.Projection.LonLat,
|
|
transformation: new L.Transformation(1, 0, -1, 0),
|
|
|
|
scale: function (zoom) {
|
|
return Math.pow(2, zoom);
|
|
},
|
|
|
|
distance: function (latlng1, latlng2) {
|
|
var dx = latlng2.lng - latlng1.lng,
|
|
dy = latlng2.lat - latlng1.lat;
|
|
|
|
return Math.sqrt(dx * dx + dy * dy);
|
|
},
|
|
|
|
infinite: true
|
|
});
|
|
|
|
|
|
/*
|
|
* L.CRS.Earth is the base class for all CRS representing Earth.
|
|
*/
|
|
|
|
L.CRS.Earth = L.extend({}, L.CRS, {
|
|
wrapLng: [-180, 180],
|
|
|
|
R: 6378137,
|
|
|
|
// distane between two geographical points using spherical law of cosines approximation
|
|
distance: function (latlng1, latlng2) {
|
|
var rad = Math.PI / 180,
|
|
lat1 = latlng1.lat * rad,
|
|
lat2 = latlng2.lat * rad,
|
|
a = Math.sin(lat1) * Math.sin(lat2) +
|
|
Math.cos(lat1) * Math.cos(lat2) * Math.cos((latlng2.lng - latlng1.lng) * rad);
|
|
|
|
return this.R * Math.acos(Math.min(a, 1));
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping and is used by Leaflet by default.
|
|
*/
|
|
|
|
L.CRS.EPSG3857 = L.extend({}, L.CRS.Earth, {
|
|
code: 'EPSG:3857',
|
|
projection: L.Projection.SphericalMercator,
|
|
|
|
transformation: (function () {
|
|
var scale = 0.5 / (Math.PI * L.Projection.SphericalMercator.R);
|
|
return new L.Transformation(scale, 0.5, -scale, 0.5);
|
|
}())
|
|
});
|
|
|
|
L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
|
|
code: 'EPSG:900913'
|
|
});
|
|
|
|
|
|
/*
|
|
* L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
|
|
*/
|
|
|
|
L.CRS.EPSG4326 = L.extend({}, L.CRS.Earth, {
|
|
code: 'EPSG:4326',
|
|
projection: L.Projection.LonLat,
|
|
transformation: new L.Transformation(1 / 180, 1, -1 / 180, 0.5)
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Map is the central class of the API - it is used to create a map.
|
|
*/
|
|
|
|
L.Map = L.Evented.extend({
|
|
|
|
options: {
|
|
crs: L.CRS.EPSG3857,
|
|
|
|
/*
|
|
center: LatLng,
|
|
zoom: Number,
|
|
layers: Array,
|
|
*/
|
|
|
|
fadeAnimation: true,
|
|
trackResize: true,
|
|
markerZoomAnimation: true
|
|
},
|
|
|
|
initialize: function (id, options) { // (HTMLElement or String, Object)
|
|
options = L.setOptions(this, options);
|
|
|
|
this._initContainer(id);
|
|
this._initLayout();
|
|
|
|
// hack for https://github.com/Leaflet/Leaflet/issues/1980
|
|
this._onResize = L.bind(this._onResize, this);
|
|
|
|
this._initEvents();
|
|
|
|
if (options.maxBounds) {
|
|
this.setMaxBounds(options.maxBounds);
|
|
}
|
|
|
|
if (options.zoom !== undefined) {
|
|
this._zoom = this._limitZoom(options.zoom);
|
|
}
|
|
|
|
if (options.center && options.zoom !== undefined) {
|
|
this.setView(L.latLng(options.center), options.zoom, {reset: true});
|
|
}
|
|
|
|
this._handlers = [];
|
|
this._layers = {};
|
|
this._zoomBoundLayers = {};
|
|
this._sizeChanged = true;
|
|
|
|
this.callInitHooks();
|
|
|
|
this._addLayers(this.options.layers);
|
|
},
|
|
|
|
|
|
// public methods that modify map state
|
|
|
|
// replaced by animation-powered implementation in Map.PanAnimation.js
|
|
setView: function (center, zoom) {
|
|
zoom = zoom === undefined ? this.getZoom() : zoom;
|
|
this._resetView(L.latLng(center), this._limitZoom(zoom));
|
|
return this;
|
|
},
|
|
|
|
setZoom: function (zoom, options) {
|
|
if (!this._loaded) {
|
|
this._zoom = this._limitZoom(zoom);
|
|
return this;
|
|
}
|
|
return this.setView(this.getCenter(), zoom, {zoom: options});
|
|
},
|
|
|
|
zoomIn: function (delta, options) {
|
|
return this.setZoom(this._zoom + (delta || 1), options);
|
|
},
|
|
|
|
zoomOut: function (delta, options) {
|
|
return this.setZoom(this._zoom - (delta || 1), options);
|
|
},
|
|
|
|
setZoomAround: function (latlng, zoom, options) {
|
|
var scale = this.getZoomScale(zoom),
|
|
viewHalf = this.getSize().divideBy(2),
|
|
containerPoint = latlng instanceof L.Point ? latlng : this.latLngToContainerPoint(latlng),
|
|
|
|
centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
|
|
newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
|
|
|
|
return this.setView(newCenter, zoom, {zoom: options});
|
|
},
|
|
|
|
fitBounds: function (bounds, options) {
|
|
|
|
options = options || {};
|
|
bounds = bounds.getBounds ? bounds.getBounds() : L.latLngBounds(bounds);
|
|
|
|
var paddingTL = L.point(options.paddingTopLeft || options.padding || [0, 0]),
|
|
paddingBR = L.point(options.paddingBottomRight || options.padding || [0, 0]),
|
|
|
|
zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR));
|
|
|
|
zoom = options.maxZoom ? Math.min(options.maxZoom, zoom) : zoom;
|
|
|
|
var paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
|
|
|
|
swPoint = this.project(bounds.getSouthWest(), zoom),
|
|
nePoint = this.project(bounds.getNorthEast(), zoom),
|
|
center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
|
|
|
|
return this.setView(center, zoom, options);
|
|
},
|
|
|
|
fitWorld: function (options) {
|
|
return this.fitBounds([[-90, -180], [90, 180]], options);
|
|
},
|
|
|
|
panTo: function (center, options) { // (LatLng)
|
|
return this.setView(center, this._zoom, {pan: options});
|
|
},
|
|
|
|
panBy: function (offset) { // (Point)
|
|
// replaced with animated panBy in Map.PanAnimation.js
|
|
this.fire('movestart');
|
|
|
|
this._rawPanBy(L.point(offset));
|
|
|
|
this.fire('move');
|
|
return this.fire('moveend');
|
|
},
|
|
|
|
setMaxBounds: function (bounds) {
|
|
bounds = L.latLngBounds(bounds);
|
|
|
|
this.options.maxBounds = bounds;
|
|
|
|
if (!bounds) {
|
|
return this.off('moveend', this._panInsideMaxBounds);
|
|
}
|
|
|
|
if (this._loaded) {
|
|
this._panInsideMaxBounds();
|
|
}
|
|
|
|
return this.on('moveend', this._panInsideMaxBounds);
|
|
},
|
|
|
|
panInsideBounds: function (bounds, options) {
|
|
var center = this.getCenter(),
|
|
newCenter = this._limitCenter(center, this._zoom, bounds);
|
|
|
|
if (center.equals(newCenter)) { return this; }
|
|
|
|
return this.panTo(newCenter, options);
|
|
},
|
|
|
|
invalidateSize: function (options) {
|
|
if (!this._loaded) { return this; }
|
|
|
|
options = L.extend({
|
|
animate: false,
|
|
pan: true
|
|
}, options === true ? {animate: true} : options);
|
|
|
|
var oldSize = this.getSize();
|
|
this._sizeChanged = true;
|
|
this._initialCenter = null;
|
|
|
|
var newSize = this.getSize(),
|
|
oldCenter = oldSize.divideBy(2).round(),
|
|
newCenter = newSize.divideBy(2).round(),
|
|
offset = oldCenter.subtract(newCenter);
|
|
|
|
if (!offset.x && !offset.y) { return this; }
|
|
|
|
if (options.animate && options.pan) {
|
|
this.panBy(offset);
|
|
|
|
} else {
|
|
if (options.pan) {
|
|
this._rawPanBy(offset);
|
|
}
|
|
|
|
this.fire('move');
|
|
|
|
if (options.debounceMoveend) {
|
|
clearTimeout(this._sizeTimer);
|
|
this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
|
|
} else {
|
|
this.fire('moveend');
|
|
}
|
|
}
|
|
|
|
return this.fire('resize', {
|
|
oldSize: oldSize,
|
|
newSize: newSize
|
|
});
|
|
},
|
|
|
|
stop: function () {
|
|
L.Util.cancelAnimFrame(this._flyToFrame);
|
|
if (this._panAnim) {
|
|
this._panAnim.stop();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
// TODO handler.addTo
|
|
addHandler: function (name, HandlerClass) {
|
|
if (!HandlerClass) { return this; }
|
|
|
|
var handler = this[name] = new HandlerClass(this);
|
|
|
|
this._handlers.push(handler);
|
|
|
|
if (this.options[name]) {
|
|
handler.enable();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
remove: function () {
|
|
|
|
this._initEvents('off');
|
|
|
|
try {
|
|
// throws error in IE6-8
|
|
delete this._container._leaflet;
|
|
} catch (e) {
|
|
this._container._leaflet = undefined;
|
|
}
|
|
|
|
L.DomUtil.remove(this._mapPane);
|
|
|
|
if (this._clearControlPos) {
|
|
this._clearControlPos();
|
|
}
|
|
|
|
this._clearHandlers();
|
|
|
|
if (this._loaded) {
|
|
this.fire('unload');
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
createPane: function (name, container) {
|
|
var className = 'leaflet-pane' + (name ? ' leaflet-' + name.replace('Pane', '') + '-pane' : ''),
|
|
pane = L.DomUtil.create('div', className, container || this._mapPane);
|
|
|
|
if (name) {
|
|
this._panes[name] = pane;
|
|
}
|
|
return pane;
|
|
},
|
|
|
|
|
|
// public methods for getting map state
|
|
|
|
getCenter: function () { // (Boolean) -> LatLng
|
|
this._checkIfLoaded();
|
|
|
|
if (this._initialCenter && !this._moved()) {
|
|
return this._initialCenter;
|
|
}
|
|
return this.layerPointToLatLng(this._getCenterLayerPoint());
|
|
},
|
|
|
|
getZoom: function () {
|
|
return this._zoom;
|
|
},
|
|
|
|
getBounds: function () {
|
|
var bounds = this.getPixelBounds(),
|
|
sw = this.unproject(bounds.getBottomLeft()),
|
|
ne = this.unproject(bounds.getTopRight());
|
|
|
|
return new L.LatLngBounds(sw, ne);
|
|
},
|
|
|
|
getMinZoom: function () {
|
|
return this.options.minZoom === undefined ? this._layersMinZoom || 0 : this.options.minZoom;
|
|
},
|
|
|
|
getMaxZoom: function () {
|
|
return this.options.maxZoom === undefined ?
|
|
(this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
|
|
this.options.maxZoom;
|
|
},
|
|
|
|
getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
|
|
bounds = L.latLngBounds(bounds);
|
|
|
|
var zoom = this.getMinZoom() - (inside ? 1 : 0),
|
|
maxZoom = this.getMaxZoom(),
|
|
size = this.getSize(),
|
|
|
|
nw = bounds.getNorthWest(),
|
|
se = bounds.getSouthEast(),
|
|
|
|
zoomNotFound = true,
|
|
boundsSize;
|
|
|
|
padding = L.point(padding || [0, 0]);
|
|
|
|
do {
|
|
zoom++;
|
|
boundsSize = this.project(se, zoom).subtract(this.project(nw, zoom)).add(padding).floor();
|
|
zoomNotFound = !inside ? size.contains(boundsSize) : boundsSize.x < size.x || boundsSize.y < size.y;
|
|
|
|
} while (zoomNotFound && zoom <= maxZoom);
|
|
|
|
if (zoomNotFound && inside) {
|
|
return null;
|
|
}
|
|
|
|
return inside ? zoom : zoom - 1;
|
|
},
|
|
|
|
getSize: function () {
|
|
if (!this._size || this._sizeChanged) {
|
|
this._size = new L.Point(
|
|
this._container.clientWidth,
|
|
this._container.clientHeight);
|
|
|
|
this._sizeChanged = false;
|
|
}
|
|
return this._size.clone();
|
|
},
|
|
|
|
getPixelBounds: function () {
|
|
var topLeftPoint = this._getTopLeftPoint();
|
|
return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
|
|
},
|
|
|
|
getPixelOrigin: function () {
|
|
this._checkIfLoaded();
|
|
return this._pixelOrigin;
|
|
},
|
|
|
|
getPixelWorldBounds: function (zoom) {
|
|
return this.options.crs.getProjectedBounds(zoom === undefined ? this.getZoom() : zoom);
|
|
},
|
|
|
|
getPane: function (pane) {
|
|
return typeof pane === 'string' ? this._panes[pane] : pane;
|
|
},
|
|
|
|
getPanes: function () {
|
|
return this._panes;
|
|
},
|
|
|
|
getContainer: function () {
|
|
return this._container;
|
|
},
|
|
|
|
|
|
// TODO replace with universal implementation after refactoring projections
|
|
|
|
getZoomScale: function (toZoom, fromZoom) {
|
|
var crs = this.options.crs;
|
|
fromZoom = fromZoom === undefined ? this._zoom : fromZoom;
|
|
return crs.scale(toZoom) / crs.scale(fromZoom);
|
|
},
|
|
|
|
getScaleZoom: function (scale, fromZoom) {
|
|
fromZoom = fromZoom === undefined ? this._zoom : fromZoom;
|
|
return fromZoom + (Math.log(scale) / Math.LN2);
|
|
},
|
|
|
|
|
|
// conversion methods
|
|
|
|
project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
|
|
zoom = zoom === undefined ? this._zoom : zoom;
|
|
return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
|
|
},
|
|
|
|
unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
|
|
zoom = zoom === undefined ? this._zoom : zoom;
|
|
return this.options.crs.pointToLatLng(L.point(point), zoom);
|
|
},
|
|
|
|
layerPointToLatLng: function (point) { // (Point)
|
|
var projectedPoint = L.point(point).add(this.getPixelOrigin());
|
|
return this.unproject(projectedPoint);
|
|
},
|
|
|
|
latLngToLayerPoint: function (latlng) { // (LatLng)
|
|
var projectedPoint = this.project(L.latLng(latlng))._round();
|
|
return projectedPoint._subtract(this.getPixelOrigin());
|
|
},
|
|
|
|
wrapLatLng: function (latlng) {
|
|
return this.options.crs.wrapLatLng(L.latLng(latlng));
|
|
},
|
|
|
|
distance: function (latlng1, latlng2) {
|
|
return this.options.crs.distance(L.latLng(latlng1), L.latLng(latlng2));
|
|
},
|
|
|
|
containerPointToLayerPoint: function (point) { // (Point)
|
|
return L.point(point).subtract(this._getMapPanePos());
|
|
},
|
|
|
|
layerPointToContainerPoint: function (point) { // (Point)
|
|
return L.point(point).add(this._getMapPanePos());
|
|
},
|
|
|
|
containerPointToLatLng: function (point) {
|
|
var layerPoint = this.containerPointToLayerPoint(L.point(point));
|
|
return this.layerPointToLatLng(layerPoint);
|
|
},
|
|
|
|
latLngToContainerPoint: function (latlng) {
|
|
return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
|
|
},
|
|
|
|
mouseEventToContainerPoint: function (e) { // (MouseEvent)
|
|
return L.DomEvent.getMousePosition(e, this._container);
|
|
},
|
|
|
|
mouseEventToLayerPoint: function (e) { // (MouseEvent)
|
|
return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
|
|
},
|
|
|
|
mouseEventToLatLng: function (e) { // (MouseEvent)
|
|
return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
|
|
},
|
|
|
|
|
|
// map initialization methods
|
|
|
|
_initContainer: function (id) {
|
|
var container = this._container = L.DomUtil.get(id);
|
|
|
|
if (!container) {
|
|
throw new Error('Map container not found.');
|
|
} else if (container._leaflet) {
|
|
throw new Error('Map container is already initialized.');
|
|
}
|
|
|
|
container._leaflet = true;
|
|
},
|
|
|
|
_initLayout: function () {
|
|
var container = this._container;
|
|
|
|
this._fadeAnimated = this.options.fadeAnimation && L.Browser.any3d;
|
|
|
|
L.DomUtil.addClass(container, 'leaflet-container' +
|
|
(L.Browser.touch ? ' leaflet-touch' : '') +
|
|
(L.Browser.retina ? ' leaflet-retina' : '') +
|
|
(L.Browser.ielt9 ? ' leaflet-oldie' : '') +
|
|
(L.Browser.safari ? ' leaflet-safari' : '') +
|
|
(this._fadeAnimated ? ' leaflet-fade-anim' : ''));
|
|
|
|
var position = L.DomUtil.getStyle(container, 'position');
|
|
|
|
if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
|
|
container.style.position = 'relative';
|
|
}
|
|
|
|
this._initPanes();
|
|
|
|
if (this._initControlPos) {
|
|
this._initControlPos();
|
|
}
|
|
},
|
|
|
|
_initPanes: function () {
|
|
var panes = this._panes = {};
|
|
|
|
this._mapPane = this.createPane('mapPane', this._container);
|
|
|
|
this.createPane('tilePane');
|
|
this.createPane('shadowPane');
|
|
this.createPane('overlayPane');
|
|
this.createPane('markerPane');
|
|
this.createPane('popupPane');
|
|
|
|
if (!this.options.markerZoomAnimation) {
|
|
L.DomUtil.addClass(panes.markerPane, 'leaflet-zoom-hide');
|
|
L.DomUtil.addClass(panes.shadowPane, 'leaflet-zoom-hide');
|
|
}
|
|
},
|
|
|
|
|
|
// private methods that modify map state
|
|
|
|
_resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
|
|
|
|
var zoomChanged = (this._zoom !== zoom);
|
|
|
|
if (!afterZoomAnim) {
|
|
this.fire('movestart');
|
|
|
|
if (zoomChanged) {
|
|
this.fire('zoomstart');
|
|
}
|
|
}
|
|
|
|
this._zoom = zoom;
|
|
this._initialCenter = center;
|
|
|
|
if (!preserveMapOffset) {
|
|
L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
|
|
}
|
|
|
|
this._pixelOrigin = this._getNewPixelOrigin(center);
|
|
|
|
var loading = !this._loaded;
|
|
this._loaded = true;
|
|
|
|
this.fire('viewreset', {hard: !preserveMapOffset});
|
|
|
|
if (loading) {
|
|
this.fire('load');
|
|
}
|
|
|
|
this.fire('move');
|
|
|
|
if (zoomChanged || afterZoomAnim) {
|
|
this.fire('zoomend');
|
|
}
|
|
|
|
this.fire('moveend', {hard: !preserveMapOffset});
|
|
},
|
|
|
|
_rawPanBy: function (offset) {
|
|
L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
|
|
},
|
|
|
|
_getZoomSpan: function () {
|
|
return this.getMaxZoom() - this.getMinZoom();
|
|
},
|
|
|
|
_panInsideMaxBounds: function () {
|
|
this.panInsideBounds(this.options.maxBounds);
|
|
},
|
|
|
|
_checkIfLoaded: function () {
|
|
if (!this._loaded) {
|
|
throw new Error('Set map center and zoom first.');
|
|
}
|
|
},
|
|
|
|
// map events
|
|
|
|
_initEvents: function (onOff) {
|
|
if (!L.DomEvent) { return; }
|
|
|
|
onOff = onOff || 'on';
|
|
|
|
L.DomEvent[onOff](this._container,
|
|
'click dblclick mousedown mouseup mouseenter mouseleave mousemove contextmenu',
|
|
this._handleMouseEvent, this);
|
|
|
|
if (this.options.trackResize) {
|
|
L.DomEvent[onOff](window, 'resize', this._onResize, this);
|
|
}
|
|
},
|
|
|
|
_onResize: function () {
|
|
L.Util.cancelAnimFrame(this._resizeRequest);
|
|
this._resizeRequest = L.Util.requestAnimFrame(
|
|
function () { this.invalidateSize({debounceMoveend: true}); }, this, false, this._container);
|
|
},
|
|
|
|
_handleMouseEvent: function (e) {
|
|
if (!this._loaded) { return; }
|
|
|
|
this._fireMouseEvent(this, e,
|
|
e.type === 'mouseenter' ? 'mouseover' :
|
|
e.type === 'mouseleave' ? 'mouseout' : e.type);
|
|
},
|
|
|
|
_fireMouseEvent: function (obj, e, type, propagate, latlng) {
|
|
type = type || e.type;
|
|
|
|
if (L.DomEvent._skipped(e)) { return; }
|
|
if (type === 'click') {
|
|
var draggableObj = obj.options.draggable === true ? obj : this;
|
|
if (!e._simulated && ((draggableObj.dragging && draggableObj.dragging.moved()) ||
|
|
(this.boxZoom && this.boxZoom.moved()))) {
|
|
L.DomEvent.stopPropagation(e);
|
|
return;
|
|
}
|
|
obj.fire('preclick');
|
|
}
|
|
|
|
if (!obj.listens(type, propagate)) { return; }
|
|
|
|
if (type === 'contextmenu') {
|
|
L.DomEvent.preventDefault(e);
|
|
}
|
|
if (type === 'click' || type === 'dblclick' || type === 'contextmenu') {
|
|
L.DomEvent.stopPropagation(e);
|
|
}
|
|
|
|
var data = {
|
|
originalEvent: e,
|
|
containerPoint: this.mouseEventToContainerPoint(e)
|
|
};
|
|
|
|
data.layerPoint = this.containerPointToLayerPoint(data.containerPoint);
|
|
data.latlng = latlng || this.layerPointToLatLng(data.layerPoint);
|
|
|
|
obj.fire(type, data, propagate);
|
|
},
|
|
|
|
_clearHandlers: function () {
|
|
for (var i = 0, len = this._handlers.length; i < len; i++) {
|
|
this._handlers[i].disable();
|
|
}
|
|
},
|
|
|
|
whenReady: function (callback, context) {
|
|
if (this._loaded) {
|
|
callback.call(context || this, {target: this});
|
|
} else {
|
|
this.on('load', callback, context);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
|
|
// private methods for getting map state
|
|
|
|
_getMapPanePos: function () {
|
|
return L.DomUtil.getPosition(this._mapPane) || new L.Point(0, 0);
|
|
},
|
|
|
|
_moved: function () {
|
|
var pos = this._getMapPanePos();
|
|
return pos && !pos.equals([0, 0]);
|
|
},
|
|
|
|
_getTopLeftPoint: function () {
|
|
return this.getPixelOrigin().subtract(this._getMapPanePos());
|
|
},
|
|
|
|
_getNewPixelOrigin: function (center, zoom) {
|
|
var viewHalf = this.getSize()._divideBy(2);
|
|
// TODO round on display, not calculation to increase precision?
|
|
return this.project(center, zoom)._subtract(viewHalf)._add(this._getMapPanePos())._round();
|
|
},
|
|
|
|
_latLngToNewLayerPoint: function (latlng, zoom, center) {
|
|
var topLeft = this._getNewPixelOrigin(center, zoom);
|
|
return this.project(latlng, zoom)._subtract(topLeft);
|
|
},
|
|
|
|
// layer point of the current center
|
|
_getCenterLayerPoint: function () {
|
|
return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
|
|
},
|
|
|
|
// offset of the specified place to the current center in pixels
|
|
_getCenterOffset: function (latlng) {
|
|
return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
|
|
},
|
|
|
|
// adjust center for view to get inside bounds
|
|
_limitCenter: function (center, zoom, bounds) {
|
|
|
|
if (!bounds) { return center; }
|
|
|
|
var centerPoint = this.project(center, zoom),
|
|
viewHalf = this.getSize().divideBy(2),
|
|
viewBounds = new L.Bounds(centerPoint.subtract(viewHalf), centerPoint.add(viewHalf)),
|
|
offset = this._getBoundsOffset(viewBounds, bounds, zoom);
|
|
|
|
return this.unproject(centerPoint.add(offset), zoom);
|
|
},
|
|
|
|
// adjust offset for view to get inside bounds
|
|
_limitOffset: function (offset, bounds) {
|
|
if (!bounds) { return offset; }
|
|
|
|
var viewBounds = this.getPixelBounds(),
|
|
newBounds = new L.Bounds(viewBounds.min.add(offset), viewBounds.max.add(offset));
|
|
|
|
return offset.add(this._getBoundsOffset(newBounds, bounds));
|
|
},
|
|
|
|
// returns offset needed for pxBounds to get inside maxBounds at a specified zoom
|
|
_getBoundsOffset: function (pxBounds, maxBounds, zoom) {
|
|
var nwOffset = this.project(maxBounds.getNorthWest(), zoom).subtract(pxBounds.min),
|
|
seOffset = this.project(maxBounds.getSouthEast(), zoom).subtract(pxBounds.max),
|
|
|
|
dx = this._rebound(nwOffset.x, -seOffset.x),
|
|
dy = this._rebound(nwOffset.y, -seOffset.y);
|
|
|
|
return new L.Point(dx, dy);
|
|
},
|
|
|
|
_rebound: function (left, right) {
|
|
return left + right > 0 ?
|
|
Math.round(left - right) / 2 :
|
|
Math.max(0, Math.ceil(left)) - Math.max(0, Math.floor(right));
|
|
},
|
|
|
|
_limitZoom: function (zoom) {
|
|
var min = this.getMinZoom(),
|
|
max = this.getMaxZoom();
|
|
|
|
return Math.max(min, Math.min(max, zoom));
|
|
}
|
|
});
|
|
|
|
L.map = function (id, options) {
|
|
return new L.Map(id, options);
|
|
};
|
|
|
|
|
|
|
|
L.Layer = L.Evented.extend({
|
|
|
|
options: {
|
|
pane: 'overlayPane'
|
|
},
|
|
|
|
addTo: function (map) {
|
|
map.addLayer(this);
|
|
return this;
|
|
},
|
|
|
|
remove: function () {
|
|
return this.removeFrom(this._map || this._mapToAdd);
|
|
},
|
|
|
|
removeFrom: function (obj) {
|
|
if (obj) {
|
|
obj.removeLayer(this);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getPane: function (name) {
|
|
return this._map.getPane(name ? (this.options[name] || name) : this.options.pane);
|
|
},
|
|
|
|
_layerAdd: function (e) {
|
|
var map = e.target;
|
|
|
|
// check in case layer gets added and then removed before the map is ready
|
|
if (!map.hasLayer(this)) { return; }
|
|
|
|
this._map = map;
|
|
this._zoomAnimated = map._zoomAnimated;
|
|
|
|
this.onAdd(map);
|
|
|
|
if (this.getAttribution && this._map.attributionControl) {
|
|
this._map.attributionControl.addAttribution(this.getAttribution());
|
|
}
|
|
|
|
if (this.getEvents) {
|
|
map.on(this.getEvents(), this);
|
|
}
|
|
|
|
this.fire('add');
|
|
map.fire('layeradd', {layer: this});
|
|
}
|
|
});
|
|
|
|
|
|
L.Map.include({
|
|
addLayer: function (layer) {
|
|
var id = L.stamp(layer);
|
|
if (this._layers[id]) { return layer; }
|
|
this._layers[id] = layer;
|
|
|
|
layer._mapToAdd = this;
|
|
|
|
if (layer.beforeAdd) {
|
|
layer.beforeAdd(this);
|
|
}
|
|
|
|
this.whenReady(layer._layerAdd, layer);
|
|
|
|
return this;
|
|
},
|
|
|
|
removeLayer: function (layer) {
|
|
var id = L.stamp(layer);
|
|
|
|
if (!this._layers[id]) { return this; }
|
|
|
|
if (this._loaded) {
|
|
layer.onRemove(this);
|
|
}
|
|
|
|
if (layer.getAttribution && this.attributionControl) {
|
|
this.attributionControl.removeAttribution(layer.getAttribution());
|
|
}
|
|
|
|
if (layer.getEvents) {
|
|
this.off(layer.getEvents(), layer);
|
|
}
|
|
|
|
delete this._layers[id];
|
|
|
|
if (this._loaded) {
|
|
this.fire('layerremove', {layer: layer});
|
|
layer.fire('remove');
|
|
}
|
|
|
|
layer._map = layer._mapToAdd = null;
|
|
|
|
return this;
|
|
},
|
|
|
|
hasLayer: function (layer) {
|
|
return !!layer && (L.stamp(layer) in this._layers);
|
|
},
|
|
|
|
eachLayer: function (method, context) {
|
|
for (var i in this._layers) {
|
|
method.call(context, this._layers[i]);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
_addLayers: function (layers) {
|
|
layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
|
|
|
|
for (var i = 0, len = layers.length; i < len; i++) {
|
|
this.addLayer(layers[i]);
|
|
}
|
|
},
|
|
|
|
_addZoomLimit: function (layer) {
|
|
if (isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom)) {
|
|
this._zoomBoundLayers[L.stamp(layer)] = layer;
|
|
this._updateZoomLevels();
|
|
}
|
|
},
|
|
|
|
_removeZoomLimit: function (layer) {
|
|
var id = L.stamp(layer);
|
|
|
|
if (this._zoomBoundLayers[id]) {
|
|
delete this._zoomBoundLayers[id];
|
|
this._updateZoomLevels();
|
|
}
|
|
},
|
|
|
|
_updateZoomLevels: function () {
|
|
var minZoom = Infinity,
|
|
maxZoom = -Infinity,
|
|
oldZoomSpan = this._getZoomSpan();
|
|
|
|
for (var i in this._zoomBoundLayers) {
|
|
var options = this._zoomBoundLayers[i].options;
|
|
|
|
minZoom = options.minZoom === undefined ? minZoom : Math.min(minZoom, options.minZoom);
|
|
maxZoom = options.maxZoom === undefined ? maxZoom : Math.max(maxZoom, options.maxZoom);
|
|
}
|
|
|
|
this._layersMaxZoom = maxZoom === -Infinity ? undefined : maxZoom;
|
|
this._layersMinZoom = minZoom === Infinity ? undefined : minZoom;
|
|
|
|
if (oldZoomSpan !== this._getZoomSpan()) {
|
|
this.fire('zoomlevelschange');
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Mercator projection that takes into account that the Earth is not a perfect sphere.
|
|
* Less popular than spherical mercator; used by projections like EPSG:3395.
|
|
*/
|
|
|
|
L.Projection.Mercator = {
|
|
R: 6378137,
|
|
R_MINOR: 6356752.314245179,
|
|
|
|
bounds: L.bounds([-20037508.34279, -15496570.73972], [20037508.34279, 18764656.23138]),
|
|
|
|
project: function (latlng) {
|
|
var d = Math.PI / 180,
|
|
r = this.R,
|
|
y = latlng.lat * d,
|
|
tmp = this.R_MINOR / r,
|
|
e = Math.sqrt(1 - tmp * tmp),
|
|
con = e * Math.sin(y);
|
|
|
|
var ts = Math.tan(Math.PI / 4 - y / 2) / Math.pow((1 - con) / (1 + con), e / 2);
|
|
y = -r * Math.log(Math.max(ts, 1E-10));
|
|
|
|
return new L.Point(latlng.lng * d * r, y);
|
|
},
|
|
|
|
unproject: function (point) {
|
|
var d = 180 / Math.PI,
|
|
r = this.R,
|
|
tmp = this.R_MINOR / r,
|
|
e = Math.sqrt(1 - tmp * tmp),
|
|
ts = Math.exp(-point.y / r),
|
|
phi = Math.PI / 2 - 2 * Math.atan(ts);
|
|
|
|
for (var i = 0, dphi = 0.1, con; i < 15 && Math.abs(dphi) > 1e-7; i++) {
|
|
con = e * Math.sin(phi);
|
|
con = Math.pow((1 - con) / (1 + con), e / 2);
|
|
dphi = Math.PI / 2 - 2 * Math.atan(ts * con) - phi;
|
|
phi += dphi;
|
|
}
|
|
|
|
return new L.LatLng(phi * d, point.x * d / r);
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
* L.CRS.EPSG3857 (World Mercator) CRS implementation.
|
|
*/
|
|
|
|
L.CRS.EPSG3395 = L.extend({}, L.CRS.Earth, {
|
|
code: 'EPSG:3395',
|
|
projection: L.Projection.Mercator,
|
|
|
|
transformation: (function () {
|
|
var scale = 0.5 / (Math.PI * L.Projection.Mercator.R);
|
|
return new L.Transformation(scale, 0.5, -scale, 0.5);
|
|
}())
|
|
});
|
|
|
|
|
|
/*
|
|
* L.GridLayer is used as base class for grid-like layers like TileLayer.
|
|
*/
|
|
|
|
L.GridLayer = L.Layer.extend({
|
|
|
|
options: {
|
|
pane: 'tilePane',
|
|
|
|
tileSize: 256,
|
|
opacity: 1,
|
|
|
|
unloadInvisibleTiles: L.Browser.mobile,
|
|
updateWhenIdle: L.Browser.mobile,
|
|
updateInterval: 200,
|
|
|
|
attribution: null,
|
|
zIndex: null,
|
|
bounds: null,
|
|
|
|
minZoom: 0
|
|
// maxZoom: <Number>
|
|
},
|
|
|
|
initialize: function (options) {
|
|
options = L.setOptions(this, options);
|
|
},
|
|
|
|
onAdd: function () {
|
|
this._initContainer();
|
|
|
|
this._pruneTiles = L.Util.throttle(this._pruneTiles, 200, this);
|
|
|
|
this._levels = {};
|
|
this._tiles = {};
|
|
|
|
this._reset();
|
|
this._update();
|
|
},
|
|
|
|
beforeAdd: function (map) {
|
|
map._addZoomLimit(this);
|
|
},
|
|
|
|
onRemove: function (map) {
|
|
L.DomUtil.remove(this._container);
|
|
map._removeZoomLimit(this);
|
|
this._container = null;
|
|
this._tileZoom = null;
|
|
},
|
|
|
|
bringToFront: function () {
|
|
if (this._map) {
|
|
L.DomUtil.toFront(this._container);
|
|
this._setAutoZIndex(Math.max);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
bringToBack: function () {
|
|
if (this._map) {
|
|
L.DomUtil.toBack(this._container);
|
|
this._setAutoZIndex(Math.min);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getAttribution: function () {
|
|
return this.options.attribution;
|
|
},
|
|
|
|
getContainer: function () {
|
|
return this._container;
|
|
},
|
|
|
|
setOpacity: function (opacity) {
|
|
this.options.opacity = opacity;
|
|
|
|
if (this._map) {
|
|
this._updateOpacity();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
setZIndex: function (zIndex) {
|
|
this.options.zIndex = zIndex;
|
|
this._updateZIndex();
|
|
|
|
return this;
|
|
},
|
|
|
|
redraw: function () {
|
|
if (this._map) {
|
|
this._removeAllTiles();
|
|
this._update();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getEvents: function () {
|
|
var events = {
|
|
viewreset: this._reset,
|
|
moveend: this._update
|
|
};
|
|
|
|
if (!this.options.updateWhenIdle) {
|
|
// update tiles on move, but not more often than once per given interval
|
|
events.move = L.Util.throttle(this._update, this.options.updateInterval, this);
|
|
}
|
|
|
|
if (this._zoomAnimated) {
|
|
events.zoomanim = this._animateZoom;
|
|
}
|
|
|
|
return events;
|
|
},
|
|
|
|
createTile: function () {
|
|
return document.createElement('div');
|
|
},
|
|
|
|
_updateZIndex: function () {
|
|
if (this._container && this.options.zIndex !== undefined && this.options.zIndex !== null) {
|
|
this._container.style.zIndex = this.options.zIndex;
|
|
}
|
|
},
|
|
|
|
_setAutoZIndex: function (compare) {
|
|
// go through all other layers of the same pane, set zIndex to max + 1 (front) or min - 1 (back)
|
|
|
|
var layers = this.getPane().children,
|
|
edgeZIndex = -compare(-Infinity, Infinity); // -Infinity for max, Infinity for min
|
|
|
|
for (var i = 0, len = layers.length, zIndex; i < len; i++) {
|
|
|
|
zIndex = layers[i].style.zIndex;
|
|
|
|
if (layers[i] !== this._container && zIndex) {
|
|
edgeZIndex = compare(edgeZIndex, +zIndex);
|
|
}
|
|
}
|
|
|
|
if (isFinite(edgeZIndex)) {
|
|
this.options.zIndex = edgeZIndex + compare(-1, 1);
|
|
this._updateZIndex();
|
|
}
|
|
},
|
|
|
|
_updateOpacity: function () {
|
|
var opacity = this.options.opacity;
|
|
|
|
if (L.Browser.ielt9) {
|
|
// IE doesn't inherit filter opacity properly, so we're forced to set it on tiles
|
|
for (var i in this._tiles) {
|
|
L.DomUtil.setOpacity(this._tiles[i].el, opacity);
|
|
}
|
|
} else {
|
|
L.DomUtil.setOpacity(this._container, opacity);
|
|
}
|
|
},
|
|
|
|
_initContainer: function () {
|
|
if (this._container) { return; }
|
|
|
|
this._container = L.DomUtil.create('div', 'leaflet-layer');
|
|
this._updateZIndex();
|
|
|
|
if (this.options.opacity < 1) {
|
|
this._updateOpacity();
|
|
}
|
|
|
|
this.getPane().appendChild(this._container);
|
|
},
|
|
|
|
_updateLevels: function () {
|
|
var zoom = this._tileZoom;
|
|
|
|
for (var z in this._levels) {
|
|
this._levels[z].el.style.zIndex = -Math.abs(zoom - z);
|
|
}
|
|
|
|
var level = this._levels[zoom],
|
|
map = this._map;
|
|
|
|
if (!level) {
|
|
level = this._levels[zoom] = {};
|
|
|
|
level.el = L.DomUtil.create('div', 'leaflet-tile-container leaflet-zoom-animated', this._container);
|
|
level.el.style.zIndex = 0;
|
|
|
|
level.origin = map.project(map.unproject(map.getPixelOrigin()), zoom).round();
|
|
level.zoom = zoom;
|
|
}
|
|
|
|
this._level = level;
|
|
|
|
return level;
|
|
},
|
|
|
|
_pruneTiles: function () {
|
|
|
|
if (!this._map) { return; }
|
|
|
|
var bounds = this._map.getBounds(),
|
|
z = this._tileZoom,
|
|
range = this._getTileRange(bounds, z),
|
|
i, j, key, tile, found;
|
|
|
|
for (key in this._tiles) {
|
|
this._tiles[key].retain = false;
|
|
}
|
|
|
|
for (i = range.min.x; i <= range.max.x; i++) {
|
|
for (j = range.min.y; j <= range.max.y; j++) {
|
|
|
|
key = i + ':' + j + ':' + z;
|
|
tile = this._tiles[key];
|
|
|
|
if (!tile) { continue; }
|
|
tile.retain = true;
|
|
|
|
if (!tile.loaded) {
|
|
found = this._retainParent(i, j, z, z - 5) || this._retainChildren(i, j, z, z + 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (key in this._tiles) {
|
|
tile = this._tiles[key];
|
|
if (!tile.retain) {
|
|
if (!tile.loaded) {
|
|
this._removeTile(key);
|
|
} else if (this._map._fadeAnimated) {
|
|
setTimeout(L.bind(this._deferRemove, this, key), 250);
|
|
} else {
|
|
this._removeTile(key);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
_removeAllTiles: function () {
|
|
for (var key in this._tiles) {
|
|
this._removeTile(key);
|
|
}
|
|
},
|
|
|
|
_deferRemove: function (key) {
|
|
var tile = this._tiles[key];
|
|
if (tile && !tile.retain) {
|
|
this._removeTile(key);
|
|
}
|
|
},
|
|
|
|
_retainParent: function (x, y, z, minZoom) {
|
|
var x2 = Math.floor(x / 2),
|
|
y2 = Math.floor(y / 2),
|
|
z2 = z - 1;
|
|
|
|
var key = x2 + ':' + y2 + ':' + z2,
|
|
tile = this._tiles[key];
|
|
|
|
if (tile && tile.loaded) {
|
|
tile.retain = true;
|
|
return true;
|
|
|
|
} else if (z2 > minZoom) {
|
|
return this._retainParent(x2, y2, z2, minZoom);
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
_retainChildren: function (x, y, z, maxZoom) {
|
|
|
|
for (var i = 2 * x; i < 2 * x + 2; i++) {
|
|
for (var j = 2 * y; j < 2 * y + 2; j++) {
|
|
|
|
var key = i + ':' + j + ':' + (z + 1),
|
|
tile = this._tiles[key];
|
|
|
|
if (tile && tile.loaded) {
|
|
tile.retain = true;
|
|
|
|
} else if (z + 1 < maxZoom) {
|
|
this._retainChildren(i, j, z + 1, maxZoom);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
_reset: function (e) {
|
|
var map = this._map,
|
|
zoom = map.getZoom(),
|
|
tileZoom = Math.round(zoom),
|
|
tileZoomChanged = this._tileZoom !== tileZoom;
|
|
|
|
if (tileZoomChanged || (e && e.hard)) {
|
|
if (this._abortLoading) {
|
|
this._abortLoading();
|
|
}
|
|
this._tileZoom = tileZoom;
|
|
this._updateLevels();
|
|
this._resetGrid();
|
|
}
|
|
|
|
this._setZoomTransforms(map.getCenter(), zoom);
|
|
},
|
|
|
|
_setZoomTransforms: function (center, zoom) {
|
|
for (var i in this._levels) {
|
|
this._setZoomTransform(this._levels[i], center, zoom);
|
|
}
|
|
},
|
|
|
|
_setZoomTransform: function (level, center, zoom) {
|
|
var scale = this._map.getZoomScale(zoom, level.zoom),
|
|
translate = level.origin.multiplyBy(scale)
|
|
.subtract(this._map._getNewPixelOrigin(center, zoom)).round();
|
|
|
|
L.DomUtil.setTransform(level.el, translate, scale);
|
|
},
|
|
|
|
_resetGrid: function () {
|
|
var map = this._map,
|
|
crs = map.options.crs,
|
|
tileSize = this._tileSize = this._getTileSize(),
|
|
tileZoom = this._tileZoom;
|
|
|
|
var bounds = this._map.getPixelWorldBounds(this._tileZoom);
|
|
if (bounds) {
|
|
this._globalTileRange = this._pxBoundsToTileRange(bounds);
|
|
}
|
|
|
|
this._wrapX = crs.wrapLng && [
|
|
Math.floor(map.project([0, crs.wrapLng[0]], tileZoom).x / tileSize),
|
|
Math.ceil(map.project([0, crs.wrapLng[1]], tileZoom).x / tileSize)
|
|
];
|
|
this._wrapY = crs.wrapLat && [
|
|
Math.floor(map.project([crs.wrapLat[0], 0], tileZoom).y / tileSize),
|
|
Math.ceil(map.project([crs.wrapLat[1], 0], tileZoom).y / tileSize)
|
|
];
|
|
},
|
|
|
|
_getTileSize: function () {
|
|
return this.options.tileSize;
|
|
},
|
|
|
|
_update: function () {
|
|
if (!this._map) { return; }
|
|
|
|
// TODO move to reset
|
|
// var zoom = this._map.getZoom();
|
|
|
|
// if (zoom > this.options.maxZoom ||
|
|
// zoom < this.options.minZoom) { return; }
|
|
|
|
var bounds = this._map.getBounds();
|
|
|
|
if (this.options.unloadInvisibleTiles) {
|
|
this._removeOtherTiles(bounds);
|
|
}
|
|
|
|
this._addTiles(bounds);
|
|
this._pruneTiles();
|
|
},
|
|
|
|
// tile coordinates range for particular geo bounds and zoom
|
|
_getTileRange: function (bounds, zoom) {
|
|
var pxBounds = new L.Bounds(
|
|
this._map.project(bounds.getNorthWest(), zoom),
|
|
this._map.project(bounds.getSouthEast(), zoom));
|
|
return this._pxBoundsToTileRange(pxBounds);
|
|
},
|
|
|
|
_addTiles: function (bounds) {
|
|
var queue = [],
|
|
tileRange = this._getTileRange(bounds, this._tileZoom),
|
|
center = tileRange.getCenter(),
|
|
j, i, coords;
|
|
|
|
// create a queue of coordinates to load tiles from
|
|
for (j = tileRange.min.y; j <= tileRange.max.y; j++) {
|
|
for (i = tileRange.min.x; i <= tileRange.max.x; i++) {
|
|
|
|
coords = new L.Point(i, j);
|
|
coords.z = this._tileZoom;
|
|
|
|
// add tile to queue if it's not in cache or out of bounds
|
|
if (!(this._tileCoordsToKey(coords) in this._tiles) && this._isValidTile(coords)) {
|
|
queue.push(coords);
|
|
}
|
|
}
|
|
}
|
|
|
|
// sort tile queue to load tiles in order of their distance to center
|
|
queue.sort(function (a, b) {
|
|
return a.distanceTo(center) - b.distanceTo(center);
|
|
});
|
|
|
|
if (queue.length !== 0) {
|
|
// if its the first batch of tiles to load
|
|
if (this._noTilesToLoad()) {
|
|
this.fire('loading');
|
|
}
|
|
|
|
// create DOM fragment to append tiles in one batch
|
|
var fragment = document.createDocumentFragment();
|
|
|
|
for (i = 0; i < queue.length; i++) {
|
|
this._addTile(queue[i], fragment);
|
|
}
|
|
|
|
this._level.el.appendChild(fragment);
|
|
}
|
|
},
|
|
|
|
_isValidTile: function (coords) {
|
|
var crs = this._map.options.crs;
|
|
|
|
if (!crs.infinite) {
|
|
// don't load tile if it's out of bounds and not wrapped
|
|
var bounds = this._globalTileRange;
|
|
if ((!crs.wrapLng && (coords.x < bounds.min.x || coords.x > bounds.max.x)) ||
|
|
(!crs.wrapLat && (coords.y < bounds.min.y || coords.y > bounds.max.y))) { return false; }
|
|
}
|
|
|
|
if (!this.options.bounds) { return true; }
|
|
|
|
// don't load tile if it doesn't intersect the bounds in options
|
|
var tileBounds = this._tileCoordsToBounds(coords);
|
|
return L.latLngBounds(this.options.bounds).intersects(tileBounds);
|
|
},
|
|
|
|
_keyToBounds: function (key) {
|
|
return this._tileCoordsToBounds(this._keyToTileCoords(key));
|
|
},
|
|
|
|
// converts tile coordinates to its geographical bounds
|
|
_tileCoordsToBounds: function (coords) {
|
|
|
|
var map = this._map,
|
|
tileSize = this._getTileSize(),
|
|
|
|
nwPoint = coords.multiplyBy(tileSize),
|
|
sePoint = nwPoint.add([tileSize, tileSize]),
|
|
|
|
nw = map.wrapLatLng(map.unproject(nwPoint, coords.z)),
|
|
se = map.wrapLatLng(map.unproject(sePoint, coords.z));
|
|
|
|
return new L.LatLngBounds(nw, se);
|
|
},
|
|
|
|
// converts tile coordinates to key for the tile cache
|
|
_tileCoordsToKey: function (coords) {
|
|
return coords.x + ':' + coords.y + ':' + coords.z;
|
|
},
|
|
|
|
// converts tile cache key to coordinates
|
|
_keyToTileCoords: function (key) {
|
|
var k = key.split(':'),
|
|
coords = new L.Point(+k[0], +k[1]);
|
|
coords.z = +k[2];
|
|
return coords;
|
|
},
|
|
|
|
// remove any present tiles that are off the specified bounds
|
|
_removeOtherTiles: function (bounds) {
|
|
for (var key in this._tiles) {
|
|
var tileBounds = this._keyToBounds(key);
|
|
if (!bounds.intersects(tileBounds)) {
|
|
this._removeTile(key);
|
|
}
|
|
}
|
|
},
|
|
|
|
_removeTile: function (key) {
|
|
var tile = this._tiles[key];
|
|
if (!tile) { return; }
|
|
|
|
L.DomUtil.remove(tile.el);
|
|
|
|
delete this._tiles[key];
|
|
|
|
this.fire('tileunload', {
|
|
tile: tile.el,
|
|
coords: this._keyToTileCoords(key)
|
|
});
|
|
},
|
|
|
|
_initTile: function (tile) {
|
|
L.DomUtil.addClass(tile, 'leaflet-tile');
|
|
|
|
tile.style.width = this._tileSize + 'px';
|
|
tile.style.height = this._tileSize + 'px';
|
|
|
|
tile.onselectstart = L.Util.falseFn;
|
|
tile.onmousemove = L.Util.falseFn;
|
|
|
|
// update opacity on tiles in IE7-8 because of filter inheritance problems
|
|
if (L.Browser.ielt9 && this.options.opacity < 1) {
|
|
L.DomUtil.setOpacity(tile, this.options.opacity);
|
|
}
|
|
|
|
// without this hack, tiles disappear after zoom on Chrome for Android
|
|
// https://github.com/Leaflet/Leaflet/issues/2078
|
|
if (L.Browser.android && !L.Browser.android23) {
|
|
tile.style.WebkitBackfaceVisibility = 'hidden';
|
|
}
|
|
},
|
|
|
|
_addTile: function (coords, container) {
|
|
var tilePos = this._getTilePos(coords),
|
|
key = this._tileCoordsToKey(coords);
|
|
|
|
var tile = this.createTile(this._wrapCoords(coords), L.bind(this._tileReady, this, coords));
|
|
|
|
this._initTile(tile);
|
|
|
|
// if createTile is defined with a second argument ("done" callback),
|
|
// we know that tile is async and will be ready later; otherwise
|
|
if (this.createTile.length < 2) {
|
|
// mark tile as ready, but delay one frame for opacity animation to happen
|
|
setTimeout(L.bind(this._tileReady, this, coords, null, tile), 0);
|
|
}
|
|
|
|
// we prefer top/left over translate3d so that we don't create a HW-accelerated layer from each tile
|
|
// which is slow, and it also fixes gaps between tiles in Safari
|
|
L.DomUtil.setPosition(tile, tilePos, true);
|
|
|
|
// save tile in cache
|
|
this._tiles[key] = {
|
|
el: tile
|
|
};
|
|
|
|
container.appendChild(tile);
|
|
this.fire('tileloadstart', {
|
|
tile: tile,
|
|
coords: coords
|
|
});
|
|
},
|
|
|
|
_tileReady: function (coords, err, tile) {
|
|
if (err) {
|
|
this.fire('tileerror', {
|
|
error: err,
|
|
tile: tile,
|
|
coords: coords
|
|
});
|
|
}
|
|
|
|
var key = this._tileCoordsToKey(coords);
|
|
|
|
tile = this._tiles[key];
|
|
if (!tile) { return; }
|
|
|
|
tile.loaded = true;
|
|
this._pruneTiles();
|
|
|
|
L.DomUtil.addClass(tile.el, 'leaflet-tile-loaded');
|
|
|
|
this.fire('tileload', {
|
|
tile: tile.el,
|
|
coords: coords
|
|
});
|
|
|
|
if (this._noTilesToLoad()) {
|
|
this.fire('load');
|
|
}
|
|
},
|
|
|
|
_getTilePos: function (coords) {
|
|
return coords.multiplyBy(this._tileSize).subtract(this._level.origin);
|
|
},
|
|
|
|
_wrapCoords: function (coords) {
|
|
var newCoords = new L.Point(
|
|
this._wrapX ? L.Util.wrapNum(coords.x, this._wrapX) : coords.x,
|
|
this._wrapY ? L.Util.wrapNum(coords.y, this._wrapY) : coords.y);
|
|
newCoords.z = coords.z;
|
|
return newCoords;
|
|
},
|
|
|
|
_pxBoundsToTileRange: function (bounds) {
|
|
return new L.Bounds(
|
|
bounds.min.divideBy(this._tileSize).floor(),
|
|
bounds.max.divideBy(this._tileSize).ceil().subtract([1, 1]));
|
|
},
|
|
|
|
_animateZoom: function (e) {
|
|
this._setZoomTransforms(e.center, e.zoom);
|
|
},
|
|
|
|
_noTilesToLoad: function () {
|
|
for (var key in this._tiles) {
|
|
if (!this._tiles[key].loaded) { return false; }
|
|
}
|
|
return true;
|
|
}
|
|
});
|
|
|
|
L.gridLayer = function (options) {
|
|
return new L.GridLayer(options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.TileLayer is used for standard xyz-numbered tile layers.
|
|
*/
|
|
|
|
L.TileLayer = L.GridLayer.extend({
|
|
|
|
options: {
|
|
maxZoom: 18,
|
|
|
|
subdomains: 'abc',
|
|
errorTileUrl: '',
|
|
zoomOffset: 0,
|
|
|
|
maxNativeZoom: null, // Number
|
|
tms: false,
|
|
zoomReverse: false,
|
|
detectRetina: false,
|
|
crossOrigin: false
|
|
},
|
|
|
|
initialize: function (url, options) {
|
|
|
|
this._url = url;
|
|
|
|
options = L.setOptions(this, options);
|
|
|
|
// detecting retina displays, adjusting tileSize and zoom levels
|
|
if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
|
|
|
|
options.tileSize = Math.floor(options.tileSize / 2);
|
|
options.zoomOffset++;
|
|
|
|
options.minZoom = Math.max(0, options.minZoom);
|
|
options.maxZoom--;
|
|
}
|
|
|
|
if (typeof options.subdomains === 'string') {
|
|
options.subdomains = options.subdomains.split('');
|
|
}
|
|
|
|
// for https://github.com/Leaflet/Leaflet/issues/137
|
|
if (!L.Browser.android) {
|
|
this.on('tileunload', this._onTileRemove);
|
|
}
|
|
},
|
|
|
|
setUrl: function (url, noRedraw) {
|
|
this._url = url;
|
|
|
|
if (!noRedraw) {
|
|
this.redraw();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
createTile: function (coords, done) {
|
|
var tile = document.createElement('img');
|
|
|
|
tile.onload = L.bind(this._tileOnLoad, this, done, tile);
|
|
tile.onerror = L.bind(this._tileOnError, this, done, tile);
|
|
|
|
if (this.options.crossOrigin) {
|
|
tile.crossOrigin = '';
|
|
}
|
|
|
|
/*
|
|
Alt tag is set to empty string to keep screen readers from reading URL and for compliance reasons
|
|
http://www.w3.org/TR/WCAG20-TECHS/H67
|
|
*/
|
|
tile.alt = '';
|
|
|
|
tile.src = this.getTileUrl(coords);
|
|
|
|
return tile;
|
|
},
|
|
|
|
getTileUrl: function (coords) {
|
|
return L.Util.template(this._url, L.extend({
|
|
r: this.options.detectRetina && L.Browser.retina && this.options.maxZoom > 0 ? '@2x' : '',
|
|
s: this._getSubdomain(coords),
|
|
x: coords.x,
|
|
y: this.options.tms ? this._globalTileRange.max.y - coords.y : coords.y,
|
|
z: this._getZoomForUrl()
|
|
}, this.options));
|
|
},
|
|
|
|
_tileOnLoad: function (done, tile) {
|
|
done(null, tile);
|
|
},
|
|
|
|
_tileOnError: function (done, tile, e) {
|
|
var errorUrl = this.options.errorTileUrl;
|
|
if (errorUrl) {
|
|
tile.src = errorUrl;
|
|
}
|
|
done(e, tile);
|
|
},
|
|
|
|
_getTileSize: function () {
|
|
var map = this._map,
|
|
options = this.options,
|
|
zoom = map.getZoom() + options.zoomOffset,
|
|
zoomN = options.maxNativeZoom;
|
|
|
|
// increase tile size when overscaling
|
|
return zoomN !== null && zoom > zoomN ?
|
|
Math.round(map.getZoomScale(zoomN, zoom) * options.tileSize) :
|
|
options.tileSize;
|
|
},
|
|
|
|
_onTileRemove: function (e) {
|
|
e.tile.onload = null;
|
|
e.tile.src = L.Util.emptyImageUrl;
|
|
},
|
|
|
|
_getZoomForUrl: function () {
|
|
|
|
var options = this.options,
|
|
zoom = this._tileZoom;
|
|
|
|
if (options.zoomReverse) {
|
|
zoom = options.maxZoom - zoom;
|
|
}
|
|
|
|
zoom += options.zoomOffset;
|
|
|
|
return options.maxNativeZoom ? Math.min(zoom, options.maxNativeZoom) : zoom;
|
|
},
|
|
|
|
_getSubdomain: function (tilePoint) {
|
|
var index = Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length;
|
|
return this.options.subdomains[index];
|
|
},
|
|
|
|
// stops loading all tiles in the background layer
|
|
_abortLoading: function () {
|
|
var i, tile;
|
|
for (i in this._tiles) {
|
|
tile = this._tiles[i].el;
|
|
|
|
tile.onload = L.Util.falseFn;
|
|
tile.onerror = L.Util.falseFn;
|
|
|
|
if (!tile.complete) {
|
|
tile.src = L.Util.emptyImageUrl;
|
|
L.DomUtil.remove(tile);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
L.tileLayer = function (url, options) {
|
|
return new L.TileLayer(url, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.TileLayer.WMS is used for WMS tile layers.
|
|
*/
|
|
|
|
L.TileLayer.WMS = L.TileLayer.extend({
|
|
|
|
defaultWmsParams: {
|
|
service: 'WMS',
|
|
request: 'GetMap',
|
|
version: '1.1.1',
|
|
layers: '',
|
|
styles: '',
|
|
format: 'image/jpeg',
|
|
transparent: false
|
|
},
|
|
|
|
options: {
|
|
crs: null,
|
|
uppercase: false
|
|
},
|
|
|
|
initialize: function (url, options) {
|
|
|
|
this._url = url;
|
|
|
|
var wmsParams = L.extend({}, this.defaultWmsParams);
|
|
|
|
// all keys that are not TileLayer options go to WMS params
|
|
for (var i in options) {
|
|
if (!(i in this.options)) {
|
|
wmsParams[i] = options[i];
|
|
}
|
|
}
|
|
|
|
options = L.setOptions(this, options);
|
|
|
|
wmsParams.width = wmsParams.height = options.tileSize * (options.detectRetina && L.Browser.retina ? 2 : 1);
|
|
|
|
this.wmsParams = wmsParams;
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
|
|
this._crs = this.options.crs || map.options.crs;
|
|
this._wmsVersion = parseFloat(this.wmsParams.version);
|
|
|
|
var projectionKey = this._wmsVersion >= 1.3 ? 'crs' : 'srs';
|
|
this.wmsParams[projectionKey] = this._crs.code;
|
|
|
|
L.TileLayer.prototype.onAdd.call(this, map);
|
|
},
|
|
|
|
getTileUrl: function (coords) {
|
|
|
|
var tileBounds = this._tileCoordsToBounds(coords),
|
|
nw = this._crs.project(tileBounds.getNorthWest()),
|
|
se = this._crs.project(tileBounds.getSouthEast()),
|
|
|
|
bbox = (this._wmsVersion >= 1.3 && this._crs === L.CRS.EPSG4326 ?
|
|
[se.y, nw.x, nw.y, se.x] :
|
|
[nw.x, se.y, se.x, nw.y]).join(','),
|
|
|
|
url = L.TileLayer.prototype.getTileUrl.call(this, coords);
|
|
|
|
return url +
|
|
L.Util.getParamString(this.wmsParams, url, this.options.uppercase) +
|
|
(this.options.uppercase ? '&BBOX=' : '&bbox=') + bbox;
|
|
},
|
|
|
|
setParams: function (params, noRedraw) {
|
|
|
|
L.extend(this.wmsParams, params);
|
|
|
|
if (!noRedraw) {
|
|
this.redraw();
|
|
}
|
|
|
|
return this;
|
|
}
|
|
});
|
|
|
|
L.tileLayer.wms = function (url, options) {
|
|
return new L.TileLayer.WMS(url, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
|
|
*/
|
|
|
|
L.ImageOverlay = L.Layer.extend({
|
|
|
|
options: {
|
|
opacity: 1,
|
|
alt: '',
|
|
interactive: false
|
|
},
|
|
|
|
initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
|
|
this._url = url;
|
|
this._bounds = L.latLngBounds(bounds);
|
|
|
|
L.setOptions(this, options);
|
|
},
|
|
|
|
onAdd: function () {
|
|
if (!this._image) {
|
|
this._initImage();
|
|
|
|
if (this.options.opacity < 1) {
|
|
this._updateOpacity();
|
|
}
|
|
}
|
|
|
|
this.getPane().appendChild(this._image);
|
|
this._initInteraction();
|
|
this._reset();
|
|
},
|
|
|
|
onRemove: function () {
|
|
L.DomUtil.remove(this._image);
|
|
},
|
|
|
|
setOpacity: function (opacity) {
|
|
this.options.opacity = opacity;
|
|
|
|
if (this._image) {
|
|
this._updateOpacity();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
setStyle: function (styleOpts) {
|
|
if (styleOpts.opacity) {
|
|
this.setOpacity(styleOpts.opacity);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
bringToFront: function () {
|
|
if (this._map) {
|
|
L.DomUtil.toFront(this._image);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
bringToBack: function () {
|
|
if (this._map) {
|
|
L.DomUtil.toBack(this._image);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
_initInteraction: function () {
|
|
if (!this.options.interactive) { return; }
|
|
L.DomUtil.addClass(this._image, 'leaflet-interactive');
|
|
L.DomEvent.on(this._image, 'click dblclick mousedown mouseup mouseover mousemove mouseout contextmenu',
|
|
this._fireMouseEvent, this);
|
|
},
|
|
|
|
_fireMouseEvent: function (e, type) {
|
|
if (this._map) {
|
|
this._map._fireMouseEvent(this, e, type, true);
|
|
}
|
|
},
|
|
|
|
setUrl: function (url) {
|
|
this._url = url;
|
|
|
|
if (this._image) {
|
|
this._image.src = url;
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getAttribution: function () {
|
|
return this.options.attribution;
|
|
},
|
|
|
|
getEvents: function () {
|
|
var events = {
|
|
viewreset: this._reset
|
|
};
|
|
|
|
if (this._zoomAnimated) {
|
|
events.zoomanim = this._animateZoom;
|
|
}
|
|
|
|
return events;
|
|
},
|
|
|
|
getBounds: function () {
|
|
return this._bounds;
|
|
},
|
|
|
|
_initImage: function () {
|
|
var img = this._image = L.DomUtil.create('img',
|
|
'leaflet-image-layer ' + (this._zoomAnimated ? 'leaflet-zoom-animated' : ''));
|
|
|
|
img.onselectstart = L.Util.falseFn;
|
|
img.onmousemove = L.Util.falseFn;
|
|
|
|
img.onload = L.bind(this.fire, this, 'load');
|
|
img.src = this._url;
|
|
img.alt = this.options.alt;
|
|
},
|
|
|
|
_animateZoom: function (e) {
|
|
var bounds = new L.Bounds(
|
|
this._map._latLngToNewLayerPoint(this._bounds.getNorthWest(), e.zoom, e.center),
|
|
this._map._latLngToNewLayerPoint(this._bounds.getSouthEast(), e.zoom, e.center));
|
|
|
|
var offset = bounds.min.add(bounds.getSize()._multiplyBy((1 - 1 / e.scale) / 2));
|
|
|
|
L.DomUtil.setTransform(this._image, offset, e.scale);
|
|
},
|
|
|
|
_reset: function () {
|
|
var image = this._image,
|
|
bounds = new L.Bounds(
|
|
this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
|
|
this._map.latLngToLayerPoint(this._bounds.getSouthEast())),
|
|
size = bounds.getSize();
|
|
|
|
L.DomUtil.setPosition(image, bounds.min);
|
|
|
|
image.style.width = size.x + 'px';
|
|
image.style.height = size.y + 'px';
|
|
},
|
|
|
|
_updateOpacity: function () {
|
|
L.DomUtil.setOpacity(this._image, this.options.opacity);
|
|
}
|
|
});
|
|
|
|
L.imageOverlay = function (url, bounds, options) {
|
|
return new L.ImageOverlay(url, bounds, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
|
|
*/
|
|
|
|
L.Icon = L.Class.extend({
|
|
/*
|
|
options: {
|
|
iconUrl: (String) (required)
|
|
iconRetinaUrl: (String) (optional, used for retina devices if detected)
|
|
iconSize: (Point) (can be set through CSS)
|
|
iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
|
|
popupAnchor: (Point) (if not specified, popup opens in the anchor point)
|
|
shadowUrl: (String) (no shadow by default)
|
|
shadowRetinaUrl: (String) (optional, used for retina devices if detected)
|
|
shadowSize: (Point)
|
|
shadowAnchor: (Point)
|
|
className: (String)
|
|
},
|
|
*/
|
|
|
|
initialize: function (options) {
|
|
L.setOptions(this, options);
|
|
},
|
|
|
|
createIcon: function (oldIcon) {
|
|
return this._createIcon('icon', oldIcon);
|
|
},
|
|
|
|
createShadow: function (oldIcon) {
|
|
return this._createIcon('shadow', oldIcon);
|
|
},
|
|
|
|
_createIcon: function (name, oldIcon) {
|
|
var src = this._getIconUrl(name);
|
|
|
|
if (!src) {
|
|
if (name === 'icon') {
|
|
throw new Error('iconUrl not set in Icon options (see the docs).');
|
|
}
|
|
return null;
|
|
}
|
|
|
|
var img = this._createImg(src, oldIcon && oldIcon.tagName === 'IMG' ? oldIcon : null);
|
|
this._setIconStyles(img, name);
|
|
|
|
return img;
|
|
},
|
|
|
|
_setIconStyles: function (img, name) {
|
|
var options = this.options,
|
|
size = L.point(options[name + 'Size']),
|
|
anchor = L.point(name === 'shadow' && options.shadowAnchor || options.iconAnchor ||
|
|
size && size.divideBy(2, true));
|
|
|
|
img.className = 'leaflet-marker-' + name + ' ' + (options.className || '');
|
|
|
|
if (anchor) {
|
|
img.style.marginLeft = (-anchor.x) + 'px';
|
|
img.style.marginTop = (-anchor.y) + 'px';
|
|
}
|
|
|
|
if (size) {
|
|
img.style.width = size.x + 'px';
|
|
img.style.height = size.y + 'px';
|
|
}
|
|
},
|
|
|
|
_createImg: function (src, el) {
|
|
el = el || document.createElement('img');
|
|
el.src = src;
|
|
return el;
|
|
},
|
|
|
|
_getIconUrl: function (name) {
|
|
return L.Browser.retina && this.options[name + 'RetinaUrl'] || this.options[name + 'Url'];
|
|
}
|
|
});
|
|
|
|
L.icon = function (options) {
|
|
return new L.Icon(options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Icon.Default is the blue marker icon used by default in Leaflet.
|
|
*/
|
|
|
|
L.Icon.Default = L.Icon.extend({
|
|
|
|
options: {
|
|
iconSize: [25, 41],
|
|
iconAnchor: [12, 41],
|
|
popupAnchor: [1, -34],
|
|
shadowSize: [41, 41]
|
|
},
|
|
|
|
_getIconUrl: function (name) {
|
|
var key = name + 'Url';
|
|
|
|
if (this.options[key]) {
|
|
return this.options[key];
|
|
}
|
|
|
|
var path = L.Icon.Default.imagePath;
|
|
|
|
if (!path) {
|
|
throw new Error('Couldn\'t autodetect L.Icon.Default.imagePath, set it manually.');
|
|
}
|
|
|
|
return path + '/marker-' + name + (L.Browser.retina && name === 'icon' ? '-2x' : '') + '.png';
|
|
}
|
|
});
|
|
|
|
L.Icon.Default.imagePath = (function () {
|
|
var scripts = document.getElementsByTagName('script'),
|
|
leafletRe = /[\/^]leaflet[\-\._]?([\w\-\._]*)\.js\??/;
|
|
|
|
var i, len, src, path;
|
|
|
|
for (i = 0, len = scripts.length; i < len; i++) {
|
|
src = scripts[i].src;
|
|
|
|
if (src.match(leafletRe)) {
|
|
path = src.split(leafletRe)[0];
|
|
return (path ? path + '/' : '') + 'images';
|
|
}
|
|
}
|
|
}());
|
|
|
|
|
|
/*
|
|
* L.Marker is used to display clickable/draggable icons on the map.
|
|
*/
|
|
|
|
L.Marker = L.Layer.extend({
|
|
|
|
options: {
|
|
pane: 'markerPane',
|
|
|
|
icon: new L.Icon.Default(),
|
|
// title: '',
|
|
// alt: '',
|
|
interactive: true,
|
|
// draggable: false,
|
|
keyboard: true,
|
|
zIndexOffset: 0,
|
|
opacity: 1,
|
|
// riseOnHover: false,
|
|
riseOffset: 250
|
|
},
|
|
|
|
initialize: function (latlng, options) {
|
|
L.setOptions(this, options);
|
|
this._latlng = L.latLng(latlng);
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
this._zoomAnimated = this._zoomAnimated && map.options.markerZoomAnimation;
|
|
|
|
this._initIcon();
|
|
this.update();
|
|
},
|
|
|
|
onRemove: function () {
|
|
if (this.dragging && this.dragging.enabled()) {
|
|
this.dragging.removeHooks();
|
|
}
|
|
|
|
this._removeIcon();
|
|
this._removeShadow();
|
|
},
|
|
|
|
getEvents: function () {
|
|
var events = {viewreset: this.update};
|
|
|
|
if (this._zoomAnimated) {
|
|
events.zoomanim = this._animateZoom;
|
|
}
|
|
|
|
return events;
|
|
},
|
|
|
|
getLatLng: function () {
|
|
return this._latlng;
|
|
},
|
|
|
|
setLatLng: function (latlng) {
|
|
var oldLatLng = this._latlng;
|
|
this._latlng = L.latLng(latlng);
|
|
this.update();
|
|
return this.fire('move', { oldLatLng: oldLatLng, latlng: this._latlng });
|
|
},
|
|
|
|
setZIndexOffset: function (offset) {
|
|
this.options.zIndexOffset = offset;
|
|
return this.update();
|
|
},
|
|
|
|
setIcon: function (icon) {
|
|
|
|
this.options.icon = icon;
|
|
|
|
if (this._map) {
|
|
this._initIcon();
|
|
this.update();
|
|
}
|
|
|
|
if (this._popup) {
|
|
this.bindPopup(this._popup, this._popup.options);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
update: function () {
|
|
|
|
if (this._icon) {
|
|
var pos = this._map.latLngToLayerPoint(this._latlng).round();
|
|
this._setPos(pos);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_initIcon: function () {
|
|
var options = this.options,
|
|
classToAdd = 'leaflet-zoom-' + (this._zoomAnimated ? 'animated' : 'hide');
|
|
|
|
var icon = options.icon.createIcon(this._icon),
|
|
addIcon = false;
|
|
|
|
// if we're not reusing the icon, remove the old one and init new one
|
|
if (icon !== this._icon) {
|
|
if (this._icon) {
|
|
this._removeIcon();
|
|
}
|
|
addIcon = true;
|
|
|
|
if (options.title) {
|
|
icon.title = options.title;
|
|
}
|
|
if (options.alt) {
|
|
icon.alt = options.alt;
|
|
}
|
|
}
|
|
|
|
L.DomUtil.addClass(icon, classToAdd);
|
|
|
|
if (options.keyboard) {
|
|
icon.tabIndex = '0';
|
|
}
|
|
|
|
this._icon = icon;
|
|
this._initInteraction();
|
|
|
|
if (L.DomEvent && options.riseOnHover) {
|
|
L.DomEvent.on(icon, {
|
|
mouseover: this._bringToFront,
|
|
mouseout: this._resetZIndex
|
|
}, this);
|
|
}
|
|
|
|
var newShadow = options.icon.createShadow(this._shadow),
|
|
addShadow = false;
|
|
|
|
if (newShadow !== this._shadow) {
|
|
this._removeShadow();
|
|
addShadow = true;
|
|
}
|
|
|
|
if (newShadow) {
|
|
L.DomUtil.addClass(newShadow, classToAdd);
|
|
}
|
|
this._shadow = newShadow;
|
|
|
|
|
|
if (options.opacity < 1) {
|
|
this._updateOpacity();
|
|
}
|
|
|
|
|
|
if (addIcon) {
|
|
this.getPane().appendChild(this._icon);
|
|
}
|
|
if (newShadow && addShadow) {
|
|
this.getPane('shadowPane').appendChild(this._shadow);
|
|
}
|
|
},
|
|
|
|
_removeIcon: function () {
|
|
if (L.DomEvent && this.options.riseOnHover) {
|
|
L.DomEvent.off(this._icon, {
|
|
mouseover: this._bringToFront,
|
|
mouseout: this._resetZIndex
|
|
}, this);
|
|
}
|
|
|
|
L.DomUtil.remove(this._icon);
|
|
|
|
this._icon = null;
|
|
},
|
|
|
|
_removeShadow: function () {
|
|
if (this._shadow) {
|
|
L.DomUtil.remove(this._shadow);
|
|
}
|
|
this._shadow = null;
|
|
},
|
|
|
|
_setPos: function (pos) {
|
|
L.DomUtil.setPosition(this._icon, pos);
|
|
|
|
if (this._shadow) {
|
|
L.DomUtil.setPosition(this._shadow, pos);
|
|
}
|
|
|
|
this._zIndex = pos.y + this.options.zIndexOffset;
|
|
|
|
this._resetZIndex();
|
|
},
|
|
|
|
_updateZIndex: function (offset) {
|
|
this._icon.style.zIndex = this._zIndex + offset;
|
|
},
|
|
|
|
_animateZoom: function (opt) {
|
|
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center).round();
|
|
|
|
this._setPos(pos);
|
|
},
|
|
|
|
_initInteraction: function () {
|
|
|
|
if (!this.options.interactive) { return; }
|
|
|
|
L.DomUtil.addClass(this._icon, 'leaflet-interactive');
|
|
|
|
if (L.DomEvent) {
|
|
L.DomEvent.on(this._icon,
|
|
'click dblclick mousedown mouseup mouseover mousemove mouseout contextmenu keypress',
|
|
this._fireMouseEvent, this);
|
|
}
|
|
|
|
if (L.Handler.MarkerDrag) {
|
|
var draggable = this.options.draggable;
|
|
if (this.dragging) {
|
|
draggable = this.dragging.enabled();
|
|
this.dragging.disable();
|
|
}
|
|
|
|
this.dragging = new L.Handler.MarkerDrag(this);
|
|
|
|
if (draggable) {
|
|
this.dragging.enable();
|
|
}
|
|
}
|
|
},
|
|
|
|
_fireMouseEvent: function (e, type) {
|
|
// to prevent outline when clicking on keyboard-focusable marker
|
|
if (e.type === 'mousedown') {
|
|
L.DomEvent.preventDefault(e);
|
|
}
|
|
|
|
if (e.type === 'keypress' && e.keyCode === 13) {
|
|
type = 'click';
|
|
}
|
|
|
|
if (this._map) {
|
|
this._map._fireMouseEvent(this, e, type, true, this._latlng);
|
|
}
|
|
},
|
|
|
|
setOpacity: function (opacity) {
|
|
this.options.opacity = opacity;
|
|
if (this._map) {
|
|
this._updateOpacity();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_updateOpacity: function () {
|
|
var opacity = this.options.opacity;
|
|
|
|
L.DomUtil.setOpacity(this._icon, opacity);
|
|
|
|
if (this._shadow) {
|
|
L.DomUtil.setOpacity(this._shadow, opacity);
|
|
}
|
|
},
|
|
|
|
_bringToFront: function () {
|
|
this._updateZIndex(this.options.riseOffset);
|
|
},
|
|
|
|
_resetZIndex: function () {
|
|
this._updateZIndex(0);
|
|
}
|
|
});
|
|
|
|
L.marker = function (latlng, options) {
|
|
return new L.Marker(latlng, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
|
|
* to use with L.Marker.
|
|
*/
|
|
|
|
L.DivIcon = L.Icon.extend({
|
|
options: {
|
|
iconSize: [12, 12], // also can be set through CSS
|
|
/*
|
|
iconAnchor: (Point)
|
|
popupAnchor: (Point)
|
|
html: (String)
|
|
bgPos: (Point)
|
|
*/
|
|
className: 'leaflet-div-icon',
|
|
html: false
|
|
},
|
|
|
|
createIcon: function (oldIcon) {
|
|
var div = (oldIcon && oldIcon.tagName === 'DIV') ? oldIcon : document.createElement('div'),
|
|
options = this.options;
|
|
|
|
div.innerHTML = options.html !== false ? options.html : '';
|
|
|
|
if (options.bgPos) {
|
|
div.style.backgroundPosition = (-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
|
|
}
|
|
this._setIconStyles(div, 'icon');
|
|
|
|
return div;
|
|
},
|
|
|
|
createShadow: function () {
|
|
return null;
|
|
}
|
|
});
|
|
|
|
L.divIcon = function (options) {
|
|
return new L.DivIcon(options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Popup is used for displaying popups on the map.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
closePopupOnClick: true
|
|
});
|
|
|
|
L.Popup = L.Layer.extend({
|
|
|
|
options: {
|
|
pane: 'popupPane',
|
|
|
|
minWidth: 50,
|
|
maxWidth: 300,
|
|
// maxHeight: <Number>,
|
|
offset: [0, 7],
|
|
|
|
autoPan: true,
|
|
autoPanPadding: [5, 5],
|
|
// autoPanPaddingTopLeft: <Point>,
|
|
// autoPanPaddingBottomRight: <Point>,
|
|
|
|
closeButton: true,
|
|
autoClose: true,
|
|
// keepInView: false,
|
|
// className: '',
|
|
zoomAnimation: true
|
|
},
|
|
|
|
initialize: function (options, source) {
|
|
L.setOptions(this, options);
|
|
|
|
this._source = source;
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
this._zoomAnimated = this._zoomAnimated && this.options.zoomAnimation;
|
|
|
|
if (!this._container) {
|
|
this._initLayout();
|
|
}
|
|
|
|
if (map._fadeAnimated) {
|
|
L.DomUtil.setOpacity(this._container, 0);
|
|
}
|
|
|
|
clearTimeout(this._removeTimeout);
|
|
this.getPane().appendChild(this._container);
|
|
this.update();
|
|
|
|
if (map._fadeAnimated) {
|
|
L.DomUtil.setOpacity(this._container, 1);
|
|
}
|
|
|
|
map.fire('popupopen', {popup: this});
|
|
|
|
if (this._source) {
|
|
this._source.fire('popupopen', {popup: this}, true);
|
|
}
|
|
},
|
|
|
|
openOn: function (map) {
|
|
map.openPopup(this);
|
|
return this;
|
|
},
|
|
|
|
onRemove: function (map) {
|
|
if (map._fadeAnimated) {
|
|
L.DomUtil.setOpacity(this._container, 0);
|
|
this._removeTimeout = setTimeout(L.bind(L.DomUtil.remove, L.DomUtil, this._container), 200);
|
|
} else {
|
|
L.DomUtil.remove(this._container);
|
|
}
|
|
|
|
map.fire('popupclose', {popup: this});
|
|
|
|
if (this._source) {
|
|
this._source.fire('popupclose', {popup: this}, true);
|
|
}
|
|
},
|
|
|
|
getLatLng: function () {
|
|
return this._latlng;
|
|
},
|
|
|
|
setLatLng: function (latlng) {
|
|
this._latlng = L.latLng(latlng);
|
|
if (this._map) {
|
|
this._updatePosition();
|
|
this._adjustPan();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getContent: function () {
|
|
return this._content;
|
|
},
|
|
|
|
setContent: function (content) {
|
|
this._content = content;
|
|
this.update();
|
|
return this;
|
|
},
|
|
|
|
update: function () {
|
|
if (!this._map) { return; }
|
|
|
|
this._container.style.visibility = 'hidden';
|
|
|
|
this._updateContent();
|
|
this._updateLayout();
|
|
this._updatePosition();
|
|
|
|
this._container.style.visibility = '';
|
|
|
|
this._adjustPan();
|
|
},
|
|
|
|
getEvents: function () {
|
|
var events = {viewreset: this._updatePosition},
|
|
options = this.options;
|
|
|
|
if (this._zoomAnimated) {
|
|
events.zoomanim = this._animateZoom;
|
|
}
|
|
if ('closeOnClick' in options ? options.closeOnClick : this._map.options.closePopupOnClick) {
|
|
events.preclick = this._close;
|
|
}
|
|
if (options.keepInView) {
|
|
events.moveend = this._adjustPan;
|
|
}
|
|
return events;
|
|
},
|
|
|
|
isOpen: function () {
|
|
return !!this._map && this._map.hasLayer(this);
|
|
},
|
|
|
|
_close: function () {
|
|
if (this._map) {
|
|
this._map.closePopup(this);
|
|
}
|
|
},
|
|
|
|
_initLayout: function () {
|
|
var prefix = 'leaflet-popup',
|
|
container = this._container = L.DomUtil.create('div',
|
|
prefix + ' ' + (this.options.className || '') +
|
|
' leaflet-zoom-' + (this._zoomAnimated ? 'animated' : 'hide'));
|
|
|
|
if (this.options.closeButton) {
|
|
var closeButton = this._closeButton = L.DomUtil.create('a', prefix + '-close-button', container);
|
|
closeButton.href = '#close';
|
|
closeButton.innerHTML = '×';
|
|
|
|
L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
|
|
}
|
|
|
|
var wrapper = this._wrapper = L.DomUtil.create('div', prefix + '-content-wrapper', container);
|
|
this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
|
|
|
|
L.DomEvent
|
|
.disableClickPropagation(wrapper)
|
|
.disableScrollPropagation(this._contentNode)
|
|
.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
|
|
|
|
this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
|
|
this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
|
|
},
|
|
|
|
_updateContent: function () {
|
|
if (!this._content) { return; }
|
|
|
|
var node = this._contentNode;
|
|
|
|
if (typeof this._content === 'string') {
|
|
node.innerHTML = this._content;
|
|
} else {
|
|
while (node.hasChildNodes()) {
|
|
node.removeChild(node.firstChild);
|
|
}
|
|
node.appendChild(this._content);
|
|
}
|
|
this.fire('contentupdate');
|
|
},
|
|
|
|
_updateLayout: function () {
|
|
var container = this._contentNode,
|
|
style = container.style;
|
|
|
|
style.width = '';
|
|
style.whiteSpace = 'nowrap';
|
|
|
|
var width = container.offsetWidth;
|
|
width = Math.min(width, this.options.maxWidth);
|
|
width = Math.max(width, this.options.minWidth);
|
|
|
|
style.width = (width + 1) + 'px';
|
|
style.whiteSpace = '';
|
|
|
|
style.height = '';
|
|
|
|
var height = container.offsetHeight,
|
|
maxHeight = this.options.maxHeight,
|
|
scrolledClass = 'leaflet-popup-scrolled';
|
|
|
|
if (maxHeight && height > maxHeight) {
|
|
style.height = maxHeight + 'px';
|
|
L.DomUtil.addClass(container, scrolledClass);
|
|
} else {
|
|
L.DomUtil.removeClass(container, scrolledClass);
|
|
}
|
|
|
|
this._containerWidth = this._container.offsetWidth;
|
|
},
|
|
|
|
_updatePosition: function () {
|
|
if (!this._map) { return; }
|
|
|
|
var pos = this._map.latLngToLayerPoint(this._latlng),
|
|
offset = L.point(this.options.offset);
|
|
|
|
if (this._zoomAnimated) {
|
|
L.DomUtil.setPosition(this._container, pos);
|
|
} else {
|
|
offset = offset.add(pos);
|
|
}
|
|
|
|
var bottom = this._containerBottom = -offset.y,
|
|
left = this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x;
|
|
|
|
// bottom position the popup in case the height of the popup changes (images loading etc)
|
|
this._container.style.bottom = bottom + 'px';
|
|
this._container.style.left = left + 'px';
|
|
},
|
|
|
|
_animateZoom: function (e) {
|
|
var pos = this._map._latLngToNewLayerPoint(this._latlng, e.zoom, e.center);
|
|
L.DomUtil.setPosition(this._container, pos);
|
|
},
|
|
|
|
_adjustPan: function () {
|
|
if (!this.options.autoPan) { return; }
|
|
|
|
var map = this._map,
|
|
containerHeight = this._container.offsetHeight,
|
|
containerWidth = this._containerWidth,
|
|
layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
|
|
|
|
if (this._zoomAnimated) {
|
|
layerPos._add(L.DomUtil.getPosition(this._container));
|
|
}
|
|
|
|
var containerPos = map.layerPointToContainerPoint(layerPos),
|
|
padding = L.point(this.options.autoPanPadding),
|
|
paddingTL = L.point(this.options.autoPanPaddingTopLeft || padding),
|
|
paddingBR = L.point(this.options.autoPanPaddingBottomRight || padding),
|
|
size = map.getSize(),
|
|
dx = 0,
|
|
dy = 0;
|
|
|
|
if (containerPos.x + containerWidth + paddingBR.x > size.x) { // right
|
|
dx = containerPos.x + containerWidth - size.x + paddingBR.x;
|
|
}
|
|
if (containerPos.x - dx - paddingTL.x < 0) { // left
|
|
dx = containerPos.x - paddingTL.x;
|
|
}
|
|
if (containerPos.y + containerHeight + paddingBR.y > size.y) { // bottom
|
|
dy = containerPos.y + containerHeight - size.y + paddingBR.y;
|
|
}
|
|
if (containerPos.y - dy - paddingTL.y < 0) { // top
|
|
dy = containerPos.y - paddingTL.y;
|
|
}
|
|
|
|
if (dx || dy) {
|
|
map
|
|
.fire('autopanstart')
|
|
.panBy([dx, dy]);
|
|
}
|
|
},
|
|
|
|
_onCloseButtonClick: function (e) {
|
|
this._close();
|
|
L.DomEvent.stop(e);
|
|
}
|
|
});
|
|
|
|
L.popup = function (options, source) {
|
|
return new L.Popup(options, source);
|
|
};
|
|
|
|
|
|
L.Map.include({
|
|
openPopup: function (popup, latlng, options) { // (Popup) or (String || HTMLElement, LatLng[, Object])
|
|
if (!(popup instanceof L.Popup)) {
|
|
var content = popup;
|
|
|
|
popup = new L.Popup(options).setContent(content);
|
|
}
|
|
|
|
if (latlng) {
|
|
popup.setLatLng(latlng);
|
|
}
|
|
|
|
if (this.hasLayer(popup)) {
|
|
return this;
|
|
}
|
|
|
|
if (this._popup && this._popup.options.autoClose) {
|
|
this.closePopup();
|
|
}
|
|
|
|
this._popup = popup;
|
|
return this.addLayer(popup);
|
|
},
|
|
|
|
closePopup: function (popup) {
|
|
if (!popup || popup === this._popup) {
|
|
popup = this._popup;
|
|
this._popup = null;
|
|
}
|
|
if (popup) {
|
|
this.removeLayer(popup);
|
|
}
|
|
return this;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Adds popup-related methods to all layers.
|
|
*/
|
|
|
|
L.Layer.include({
|
|
|
|
bindPopup: function (content, options) {
|
|
|
|
if (content instanceof L.Popup) {
|
|
this._popup = content;
|
|
content._source = this;
|
|
} else {
|
|
if (!this._popup || options) {
|
|
this._popup = new L.Popup(options, this);
|
|
}
|
|
this._popup.setContent(content);
|
|
}
|
|
|
|
if (!this._popupHandlersAdded) {
|
|
this.on({
|
|
click: this._openPopup,
|
|
remove: this.closePopup,
|
|
move: this._movePopup
|
|
});
|
|
this._popupHandlersAdded = true;
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
unbindPopup: function () {
|
|
if (this._popup) {
|
|
this.off({
|
|
click: this._openPopup,
|
|
remove: this.closePopup,
|
|
move: this._movePopup
|
|
});
|
|
this._popupHandlersAdded = false;
|
|
this._popup = null;
|
|
}
|
|
return this;
|
|
},
|
|
|
|
openPopup: function (latlng) {
|
|
if (this._popup && this._map) {
|
|
this._map.openPopup(this._popup, latlng || this._latlng || this.getCenter());
|
|
}
|
|
return this;
|
|
},
|
|
|
|
closePopup: function () {
|
|
if (this._popup) {
|
|
this._popup._close();
|
|
}
|
|
return this;
|
|
},
|
|
|
|
togglePopup: function () {
|
|
if (this._popup) {
|
|
if (this._popup._map) {
|
|
this.closePopup();
|
|
} else {
|
|
this.openPopup();
|
|
}
|
|
}
|
|
return this;
|
|
},
|
|
|
|
setPopupContent: function (content) {
|
|
if (this._popup) {
|
|
this._popup.setContent(content);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getPopup: function () {
|
|
return this._popup;
|
|
},
|
|
|
|
_openPopup: function (e) {
|
|
this._map.openPopup(this._popup, e.latlng);
|
|
},
|
|
|
|
_movePopup: function (e) {
|
|
this._popup.setLatLng(e.latlng);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Popup extension to L.Marker, adding popup-related methods.
|
|
*/
|
|
|
|
L.Marker.include({
|
|
bindPopup: function (content, options) {
|
|
var anchor = L.point(this.options.icon.options.popupAnchor || [0, 0])
|
|
.add(L.Popup.prototype.options.offset);
|
|
|
|
options = L.extend({offset: anchor}, options);
|
|
|
|
return L.Layer.prototype.bindPopup.call(this, content, options);
|
|
},
|
|
|
|
_openPopup: L.Layer.prototype.togglePopup
|
|
});
|
|
|
|
|
|
/*
|
|
* L.LayerGroup is a class to combine several layers into one so that
|
|
* you can manipulate the group (e.g. add/remove it) as one layer.
|
|
*/
|
|
|
|
L.LayerGroup = L.Layer.extend({
|
|
|
|
initialize: function (layers) {
|
|
this._layers = {};
|
|
|
|
var i, len;
|
|
|
|
if (layers) {
|
|
for (i = 0, len = layers.length; i < len; i++) {
|
|
this.addLayer(layers[i]);
|
|
}
|
|
}
|
|
},
|
|
|
|
addLayer: function (layer) {
|
|
var id = this.getLayerId(layer);
|
|
|
|
this._layers[id] = layer;
|
|
|
|
if (this._map) {
|
|
this._map.addLayer(layer);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
removeLayer: function (layer) {
|
|
var id = layer in this._layers ? layer : this.getLayerId(layer);
|
|
|
|
if (this._map && this._layers[id]) {
|
|
this._map.removeLayer(this._layers[id]);
|
|
}
|
|
|
|
delete this._layers[id];
|
|
|
|
return this;
|
|
},
|
|
|
|
hasLayer: function (layer) {
|
|
return !!layer && (layer in this._layers || this.getLayerId(layer) in this._layers);
|
|
},
|
|
|
|
clearLayers: function () {
|
|
for (var i in this._layers) {
|
|
this.removeLayer(this._layers[i]);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
invoke: function (methodName) {
|
|
var args = Array.prototype.slice.call(arguments, 1),
|
|
i, layer;
|
|
|
|
for (i in this._layers) {
|
|
layer = this._layers[i];
|
|
|
|
if (layer[methodName]) {
|
|
layer[methodName].apply(layer, args);
|
|
}
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
for (var i in this._layers) {
|
|
map.addLayer(this._layers[i]);
|
|
}
|
|
},
|
|
|
|
onRemove: function (map) {
|
|
for (var i in this._layers) {
|
|
map.removeLayer(this._layers[i]);
|
|
}
|
|
},
|
|
|
|
eachLayer: function (method, context) {
|
|
for (var i in this._layers) {
|
|
method.call(context, this._layers[i]);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
getLayer: function (id) {
|
|
return this._layers[id];
|
|
},
|
|
|
|
getLayers: function () {
|
|
var layers = [];
|
|
|
|
for (var i in this._layers) {
|
|
layers.push(this._layers[i]);
|
|
}
|
|
return layers;
|
|
},
|
|
|
|
setZIndex: function (zIndex) {
|
|
return this.invoke('setZIndex', zIndex);
|
|
},
|
|
|
|
getLayerId: function (layer) {
|
|
return L.stamp(layer);
|
|
}
|
|
});
|
|
|
|
L.layerGroup = function (layers) {
|
|
return new L.LayerGroup(layers);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
|
|
* shared between a group of interactive layers (like vectors or markers).
|
|
*/
|
|
|
|
L.FeatureGroup = L.LayerGroup.extend({
|
|
|
|
addLayer: function (layer) {
|
|
if (this.hasLayer(layer)) {
|
|
return this;
|
|
}
|
|
|
|
layer.addEventParent(this);
|
|
|
|
L.LayerGroup.prototype.addLayer.call(this, layer);
|
|
|
|
if (this._popupContent && layer.bindPopup) {
|
|
layer.bindPopup(this._popupContent, this._popupOptions);
|
|
}
|
|
|
|
return this.fire('layeradd', {layer: layer});
|
|
},
|
|
|
|
removeLayer: function (layer) {
|
|
if (!this.hasLayer(layer)) {
|
|
return this;
|
|
}
|
|
if (layer in this._layers) {
|
|
layer = this._layers[layer];
|
|
}
|
|
|
|
layer.removeEventParent(this);
|
|
|
|
L.LayerGroup.prototype.removeLayer.call(this, layer);
|
|
|
|
if (this._popupContent) {
|
|
this.invoke('unbindPopup');
|
|
}
|
|
|
|
return this.fire('layerremove', {layer: layer});
|
|
},
|
|
|
|
bindPopup: function (content, options) {
|
|
this._popupContent = content;
|
|
this._popupOptions = options;
|
|
return this.invoke('bindPopup', content, options);
|
|
},
|
|
|
|
openPopup: function (latlng) {
|
|
// open popup on the first layer
|
|
for (var id in this._layers) {
|
|
this._layers[id].openPopup(latlng);
|
|
break;
|
|
}
|
|
return this;
|
|
},
|
|
|
|
setStyle: function (style) {
|
|
return this.invoke('setStyle', style);
|
|
},
|
|
|
|
bringToFront: function () {
|
|
return this.invoke('bringToFront');
|
|
},
|
|
|
|
bringToBack: function () {
|
|
return this.invoke('bringToBack');
|
|
},
|
|
|
|
getBounds: function () {
|
|
var bounds = new L.LatLngBounds();
|
|
|
|
this.eachLayer(function (layer) {
|
|
bounds.extend(layer.getBounds ? layer.getBounds() : layer.getLatLng());
|
|
});
|
|
|
|
return bounds;
|
|
}
|
|
});
|
|
|
|
L.featureGroup = function (layers) {
|
|
return new L.FeatureGroup(layers);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Renderer is a base class for renderer implementations (SVG, Canvas);
|
|
* handles renderer container, bounds and zoom animation.
|
|
*/
|
|
|
|
L.Renderer = L.Layer.extend({
|
|
|
|
options: {
|
|
// how much to extend the clip area around the map view (relative to its size)
|
|
// e.g. 0.1 would be 10% of map view in each direction; defaults to clip with the map view
|
|
padding: 0
|
|
},
|
|
|
|
initialize: function (options) {
|
|
L.setOptions(this, options);
|
|
L.stamp(this);
|
|
},
|
|
|
|
onAdd: function () {
|
|
if (!this._container) {
|
|
this._initContainer(); // defined by renderer implementations
|
|
|
|
if (this._zoomAnimated) {
|
|
L.DomUtil.addClass(this._container, 'leaflet-zoom-animated');
|
|
}
|
|
}
|
|
|
|
this.getPane().appendChild(this._container);
|
|
this._update();
|
|
},
|
|
|
|
onRemove: function () {
|
|
L.DomUtil.remove(this._container);
|
|
},
|
|
|
|
getEvents: function () {
|
|
var events = {
|
|
moveend: this._update
|
|
};
|
|
if (this._zoomAnimated) {
|
|
events.zoomanim = this._animateZoom;
|
|
}
|
|
return events;
|
|
},
|
|
|
|
_animateZoom: function (e) {
|
|
var origin = e.origin.subtract(this._map._getCenterLayerPoint()),
|
|
offset = this._bounds.min.add(origin.multiplyBy(1 - e.scale)).add(e.offset).round();
|
|
|
|
L.DomUtil.setTransform(this._container, offset, e.scale);
|
|
},
|
|
|
|
_update: function () {
|
|
// update pixel bounds of renderer container (for positioning/sizing/clipping later)
|
|
var p = this.options.padding,
|
|
size = this._map.getSize(),
|
|
min = this._map.containerPointToLayerPoint(size.multiplyBy(-p)).round();
|
|
|
|
this._bounds = new L.Bounds(min, min.add(size.multiplyBy(1 + p * 2)).round());
|
|
}
|
|
});
|
|
|
|
|
|
L.Map.include({
|
|
// used by each vector layer to decide which renderer to use
|
|
getRenderer: function (layer) {
|
|
var renderer = layer.options.renderer || this.options.renderer || this._renderer;
|
|
|
|
if (!renderer) {
|
|
renderer = this._renderer = (L.SVG && L.svg()) || (L.Canvas && L.canvas());
|
|
}
|
|
|
|
if (!this.hasLayer(renderer)) {
|
|
this.addLayer(renderer);
|
|
}
|
|
return renderer;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Path is the base class for all Leaflet vector layers like polygons and circles.
|
|
*/
|
|
|
|
L.Path = L.Layer.extend({
|
|
|
|
options: {
|
|
stroke: true,
|
|
color: '#3388ff',
|
|
weight: 3,
|
|
opacity: 1,
|
|
lineCap: 'round',
|
|
lineJoin: 'round',
|
|
// dashArray: null
|
|
// dashOffset: null
|
|
|
|
// fill: false
|
|
// fillColor: same as color by default
|
|
fillOpacity: 0.2,
|
|
fillRule: 'evenodd',
|
|
|
|
// className: ''
|
|
interactive: true
|
|
},
|
|
|
|
onAdd: function () {
|
|
this._renderer = this._map.getRenderer(this);
|
|
this._renderer._initPath(this);
|
|
|
|
// defined in children classes
|
|
this._project();
|
|
this._update();
|
|
|
|
this._renderer._addPath(this);
|
|
},
|
|
|
|
onRemove: function () {
|
|
this._renderer._removePath(this);
|
|
},
|
|
|
|
getEvents: function () {
|
|
return {
|
|
viewreset: this._project,
|
|
moveend: this._update
|
|
};
|
|
},
|
|
|
|
redraw: function () {
|
|
if (this._map) {
|
|
this._renderer._updatePath(this);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
setStyle: function (style) {
|
|
L.setOptions(this, style);
|
|
if (this._renderer) {
|
|
this._renderer._updateStyle(this);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
bringToFront: function () {
|
|
if (this._renderer) {
|
|
this._renderer._bringToFront(this);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
bringToBack: function () {
|
|
if (this._renderer) {
|
|
this._renderer._bringToBack(this);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
_fireMouseEvent: function (e, type) {
|
|
this._map._fireMouseEvent(this, e, type, true);
|
|
},
|
|
|
|
_clickTolerance: function () {
|
|
// used when doing hit detection for Canvas layers
|
|
return (this.options.stroke ? this.options.weight / 2 : 0) + (L.Browser.touch ? 10 : 0);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.LineUtil contains different utility functions for line segments
|
|
* and polylines (clipping, simplification, distances, etc.)
|
|
*/
|
|
|
|
/*jshint bitwise:false */ // allow bitwise operations for this file
|
|
|
|
L.LineUtil = {
|
|
|
|
// Simplify polyline with vertex reduction and Douglas-Peucker simplification.
|
|
// Improves rendering performance dramatically by lessening the number of points to draw.
|
|
|
|
simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
|
|
if (!tolerance || !points.length) {
|
|
return points.slice();
|
|
}
|
|
|
|
var sqTolerance = tolerance * tolerance;
|
|
|
|
// stage 1: vertex reduction
|
|
points = this._reducePoints(points, sqTolerance);
|
|
|
|
// stage 2: Douglas-Peucker simplification
|
|
points = this._simplifyDP(points, sqTolerance);
|
|
|
|
return points;
|
|
},
|
|
|
|
// distance from a point to a segment between two points
|
|
pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
|
|
return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
|
|
},
|
|
|
|
closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
|
|
return this._sqClosestPointOnSegment(p, p1, p2);
|
|
},
|
|
|
|
// Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
|
|
_simplifyDP: function (points, sqTolerance) {
|
|
|
|
var len = points.length,
|
|
ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
|
|
markers = new ArrayConstructor(len);
|
|
|
|
markers[0] = markers[len - 1] = 1;
|
|
|
|
this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
|
|
|
|
var i,
|
|
newPoints = [];
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (markers[i]) {
|
|
newPoints.push(points[i]);
|
|
}
|
|
}
|
|
|
|
return newPoints;
|
|
},
|
|
|
|
_simplifyDPStep: function (points, markers, sqTolerance, first, last) {
|
|
|
|
var maxSqDist = 0,
|
|
index, i, sqDist;
|
|
|
|
for (i = first + 1; i <= last - 1; i++) {
|
|
sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
|
|
|
|
if (sqDist > maxSqDist) {
|
|
index = i;
|
|
maxSqDist = sqDist;
|
|
}
|
|
}
|
|
|
|
if (maxSqDist > sqTolerance) {
|
|
markers[index] = 1;
|
|
|
|
this._simplifyDPStep(points, markers, sqTolerance, first, index);
|
|
this._simplifyDPStep(points, markers, sqTolerance, index, last);
|
|
}
|
|
},
|
|
|
|
// reduce points that are too close to each other to a single point
|
|
_reducePoints: function (points, sqTolerance) {
|
|
var reducedPoints = [points[0]];
|
|
|
|
for (var i = 1, prev = 0, len = points.length; i < len; i++) {
|
|
if (this._sqDist(points[i], points[prev]) > sqTolerance) {
|
|
reducedPoints.push(points[i]);
|
|
prev = i;
|
|
}
|
|
}
|
|
if (prev < len - 1) {
|
|
reducedPoints.push(points[len - 1]);
|
|
}
|
|
return reducedPoints;
|
|
},
|
|
|
|
// Cohen-Sutherland line clipping algorithm.
|
|
// Used to avoid rendering parts of a polyline that are not currently visible.
|
|
|
|
clipSegment: function (a, b, bounds, useLastCode) {
|
|
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
|
|
codeB = this._getBitCode(b, bounds),
|
|
|
|
codeOut, p, newCode;
|
|
|
|
// save 2nd code to avoid calculating it on the next segment
|
|
this._lastCode = codeB;
|
|
|
|
while (true) {
|
|
// if a,b is inside the clip window (trivial accept)
|
|
if (!(codeA | codeB)) {
|
|
return [a, b];
|
|
// if a,b is outside the clip window (trivial reject)
|
|
} else if (codeA & codeB) {
|
|
return false;
|
|
// other cases
|
|
} else {
|
|
codeOut = codeA || codeB;
|
|
p = this._getEdgeIntersection(a, b, codeOut, bounds);
|
|
newCode = this._getBitCode(p, bounds);
|
|
|
|
if (codeOut === codeA) {
|
|
a = p;
|
|
codeA = newCode;
|
|
} else {
|
|
b = p;
|
|
codeB = newCode;
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
_getEdgeIntersection: function (a, b, code, bounds) {
|
|
var dx = b.x - a.x,
|
|
dy = b.y - a.y,
|
|
min = bounds.min,
|
|
max = bounds.max,
|
|
x, y;
|
|
|
|
if (code & 8) { // top
|
|
x = a.x + dx * (max.y - a.y) / dy;
|
|
y = max.y;
|
|
|
|
} else if (code & 4) { // bottom
|
|
x = a.x + dx * (min.y - a.y) / dy;
|
|
y = min.y;
|
|
|
|
} else if (code & 2) { // right
|
|
x = max.x;
|
|
y = a.y + dy * (max.x - a.x) / dx;
|
|
|
|
} else if (code & 1) { // left
|
|
x = min.x;
|
|
y = a.y + dy * (min.x - a.x) / dx;
|
|
}
|
|
|
|
return new L.Point(x, y, true);
|
|
},
|
|
|
|
_getBitCode: function (/*Point*/ p, bounds) {
|
|
var code = 0;
|
|
|
|
if (p.x < bounds.min.x) { // left
|
|
code |= 1;
|
|
} else if (p.x > bounds.max.x) { // right
|
|
code |= 2;
|
|
}
|
|
|
|
if (p.y < bounds.min.y) { // bottom
|
|
code |= 4;
|
|
} else if (p.y > bounds.max.y) { // top
|
|
code |= 8;
|
|
}
|
|
|
|
return code;
|
|
},
|
|
|
|
// square distance (to avoid unnecessary Math.sqrt calls)
|
|
_sqDist: function (p1, p2) {
|
|
var dx = p2.x - p1.x,
|
|
dy = p2.y - p1.y;
|
|
return dx * dx + dy * dy;
|
|
},
|
|
|
|
// return closest point on segment or distance to that point
|
|
_sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
|
|
var x = p1.x,
|
|
y = p1.y,
|
|
dx = p2.x - x,
|
|
dy = p2.y - y,
|
|
dot = dx * dx + dy * dy,
|
|
t;
|
|
|
|
if (dot > 0) {
|
|
t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
|
|
|
|
if (t > 1) {
|
|
x = p2.x;
|
|
y = p2.y;
|
|
} else if (t > 0) {
|
|
x += dx * t;
|
|
y += dy * t;
|
|
}
|
|
}
|
|
|
|
dx = p.x - x;
|
|
dy = p.y - y;
|
|
|
|
return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
|
|
}
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Polyline implements polyline vector layer (a set of points connected with lines)
|
|
*/
|
|
|
|
L.Polyline = L.Path.extend({
|
|
|
|
options: {
|
|
// how much to simplify the polyline on each zoom level
|
|
// more = better performance and smoother look, less = more accurate
|
|
smoothFactor: 1.0
|
|
// noClip: false
|
|
},
|
|
|
|
initialize: function (latlngs, options) {
|
|
L.setOptions(this, options);
|
|
this._setLatLngs(latlngs);
|
|
},
|
|
|
|
getLatLngs: function () {
|
|
// TODO rings
|
|
return this._latlngs;
|
|
},
|
|
|
|
setLatLngs: function (latlngs) {
|
|
this._setLatLngs(latlngs);
|
|
return this.redraw();
|
|
},
|
|
|
|
addLatLng: function (latlng) {
|
|
// TODO rings
|
|
latlng = L.latLng(latlng);
|
|
this._latlngs.push(latlng);
|
|
this._bounds.extend(latlng);
|
|
return this.redraw();
|
|
},
|
|
|
|
spliceLatLngs: function () {
|
|
// TODO rings
|
|
var removed = [].splice.apply(this._latlngs, arguments);
|
|
this._setLatLngs(this._latlngs);
|
|
this.redraw();
|
|
return removed;
|
|
},
|
|
|
|
closestLayerPoint: function (p) {
|
|
var minDistance = Infinity,
|
|
minPoint = null,
|
|
closest = L.LineUtil._sqClosestPointOnSegment,
|
|
p1, p2;
|
|
|
|
for (var j = 0, jLen = this._parts.length; j < jLen; j++) {
|
|
var points = this._parts[j];
|
|
|
|
for (var i = 1, len = points.length; i < len; i++) {
|
|
p1 = points[i - 1];
|
|
p2 = points[i];
|
|
|
|
var sqDist = closest(p, p1, p2, true);
|
|
|
|
if (sqDist < minDistance) {
|
|
minDistance = sqDist;
|
|
minPoint = closest(p, p1, p2);
|
|
}
|
|
}
|
|
}
|
|
if (minPoint) {
|
|
minPoint.distance = Math.sqrt(minDistance);
|
|
}
|
|
return minPoint;
|
|
},
|
|
|
|
getCenter: function () {
|
|
var i, halfDist, segDist, dist, p1, p2, ratio,
|
|
points = this._rings[0],
|
|
len = points.length;
|
|
|
|
// polyline centroid algorithm; only uses the first ring if there are multiple
|
|
|
|
for (i = 0, halfDist = 0; i < len - 1; i++) {
|
|
halfDist += points[i].distanceTo(points[i + 1]) / 2;
|
|
}
|
|
|
|
for (i = 0, dist = 0; i < len - 1; i++) {
|
|
p1 = points[i];
|
|
p2 = points[i + 1];
|
|
segDist = p1.distanceTo(p2);
|
|
dist += segDist;
|
|
|
|
if (dist > halfDist) {
|
|
ratio = (dist - halfDist) / segDist;
|
|
return this._map.layerPointToLatLng([
|
|
p2.x - ratio * (p2.x - p1.x),
|
|
p2.y - ratio * (p2.y - p1.y)
|
|
]);
|
|
}
|
|
}
|
|
},
|
|
|
|
getBounds: function () {
|
|
return this._bounds;
|
|
},
|
|
|
|
_setLatLngs: function (latlngs) {
|
|
this._bounds = new L.LatLngBounds();
|
|
this._latlngs = this._convertLatLngs(latlngs);
|
|
},
|
|
|
|
// recursively convert latlngs input into actual LatLng instances; calculate bounds along the way
|
|
_convertLatLngs: function (latlngs) {
|
|
var result = [],
|
|
flat = this._flat(latlngs);
|
|
|
|
for (var i = 0, len = latlngs.length; i < len; i++) {
|
|
if (flat) {
|
|
result[i] = L.latLng(latlngs[i]);
|
|
this._bounds.extend(result[i]);
|
|
} else {
|
|
result[i] = this._convertLatLngs(latlngs[i]);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
},
|
|
|
|
_flat: function (latlngs) {
|
|
// true if it's a flat array of latlngs; false if nested
|
|
return !L.Util.isArray(latlngs[0]) || typeof latlngs[0][0] !== 'object';
|
|
},
|
|
|
|
_project: function () {
|
|
this._rings = [];
|
|
this._projectLatlngs(this._latlngs, this._rings);
|
|
|
|
// project bounds as well to use later for Canvas hit detection/etc.
|
|
var w = this._clickTolerance(),
|
|
p = new L.Point(w, -w);
|
|
|
|
if (this._latlngs.length) {
|
|
this._pxBounds = new L.Bounds(
|
|
this._map.latLngToLayerPoint(this._bounds.getSouthWest())._subtract(p),
|
|
this._map.latLngToLayerPoint(this._bounds.getNorthEast())._add(p));
|
|
}
|
|
},
|
|
|
|
// recursively turns latlngs into a set of rings with projected coordinates
|
|
_projectLatlngs: function (latlngs, result) {
|
|
|
|
var flat = latlngs[0] instanceof L.LatLng,
|
|
len = latlngs.length,
|
|
i, ring;
|
|
|
|
if (flat) {
|
|
ring = [];
|
|
for (i = 0; i < len; i++) {
|
|
ring[i] = this._map.latLngToLayerPoint(latlngs[i]);
|
|
}
|
|
result.push(ring);
|
|
} else {
|
|
for (i = 0; i < len; i++) {
|
|
this._projectLatlngs(latlngs[i], result);
|
|
}
|
|
}
|
|
},
|
|
|
|
// clip polyline by renderer bounds so that we have less to render for performance
|
|
_clipPoints: function () {
|
|
if (this.options.noClip) {
|
|
this._parts = this._rings;
|
|
return;
|
|
}
|
|
|
|
this._parts = [];
|
|
|
|
var parts = this._parts,
|
|
bounds = this._renderer._bounds,
|
|
i, j, k, len, len2, segment, points;
|
|
|
|
for (i = 0, k = 0, len = this._rings.length; i < len; i++) {
|
|
points = this._rings[i];
|
|
|
|
for (j = 0, len2 = points.length; j < len2 - 1; j++) {
|
|
segment = L.LineUtil.clipSegment(points[j], points[j + 1], bounds, j);
|
|
|
|
if (!segment) { continue; }
|
|
|
|
parts[k] = parts[k] || [];
|
|
parts[k].push(segment[0]);
|
|
|
|
// if segment goes out of screen, or it's the last one, it's the end of the line part
|
|
if ((segment[1] !== points[j + 1]) || (j === len2 - 2)) {
|
|
parts[k].push(segment[1]);
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
// simplify each clipped part of the polyline for performance
|
|
_simplifyPoints: function () {
|
|
var parts = this._parts,
|
|
tolerance = this.options.smoothFactor;
|
|
|
|
for (var i = 0, len = parts.length; i < len; i++) {
|
|
parts[i] = L.LineUtil.simplify(parts[i], tolerance);
|
|
}
|
|
},
|
|
|
|
_update: function () {
|
|
if (!this._map) { return; }
|
|
|
|
this._clipPoints();
|
|
this._simplifyPoints();
|
|
this._updatePath();
|
|
},
|
|
|
|
_updatePath: function () {
|
|
this._renderer._updatePoly(this);
|
|
}
|
|
});
|
|
|
|
L.polyline = function (latlngs, options) {
|
|
return new L.Polyline(latlngs, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.PolyUtil contains utility functions for polygons (clipping, etc.).
|
|
*/
|
|
|
|
/*jshint bitwise:false */ // allow bitwise operations here
|
|
|
|
L.PolyUtil = {};
|
|
|
|
/*
|
|
* Sutherland-Hodgeman polygon clipping algorithm.
|
|
* Used to avoid rendering parts of a polygon that are not currently visible.
|
|
*/
|
|
L.PolyUtil.clipPolygon = function (points, bounds) {
|
|
var clippedPoints,
|
|
edges = [1, 4, 2, 8],
|
|
i, j, k,
|
|
a, b,
|
|
len, edge, p,
|
|
lu = L.LineUtil;
|
|
|
|
for (i = 0, len = points.length; i < len; i++) {
|
|
points[i]._code = lu._getBitCode(points[i], bounds);
|
|
}
|
|
|
|
// for each edge (left, bottom, right, top)
|
|
for (k = 0; k < 4; k++) {
|
|
edge = edges[k];
|
|
clippedPoints = [];
|
|
|
|
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
|
|
a = points[i];
|
|
b = points[j];
|
|
|
|
// if a is inside the clip window
|
|
if (!(a._code & edge)) {
|
|
// if b is outside the clip window (a->b goes out of screen)
|
|
if (b._code & edge) {
|
|
p = lu._getEdgeIntersection(b, a, edge, bounds);
|
|
p._code = lu._getBitCode(p, bounds);
|
|
clippedPoints.push(p);
|
|
}
|
|
clippedPoints.push(a);
|
|
|
|
// else if b is inside the clip window (a->b enters the screen)
|
|
} else if (!(b._code & edge)) {
|
|
p = lu._getEdgeIntersection(b, a, edge, bounds);
|
|
p._code = lu._getBitCode(p, bounds);
|
|
clippedPoints.push(p);
|
|
}
|
|
}
|
|
points = clippedPoints;
|
|
}
|
|
|
|
return points;
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Polygon implements polygon vector layer (closed polyline with a fill inside).
|
|
*/
|
|
|
|
L.Polygon = L.Polyline.extend({
|
|
|
|
options: {
|
|
fill: true
|
|
},
|
|
|
|
getCenter: function () {
|
|
var i, j, len, p1, p2, f, area, x, y,
|
|
points = this._rings[0];
|
|
|
|
// polygon centroid algorithm; only uses the first ring if there are multiple
|
|
|
|
area = x = y = 0;
|
|
|
|
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
|
|
p1 = points[i];
|
|
p2 = points[j];
|
|
|
|
f = p1.y * p2.x - p2.y * p1.x;
|
|
x += (p1.x + p2.x) * f;
|
|
y += (p1.y + p2.y) * f;
|
|
area += f * 3;
|
|
}
|
|
|
|
return this._map.layerPointToLatLng([x / area, y / area]);
|
|
},
|
|
|
|
_convertLatLngs: function (latlngs) {
|
|
var result = L.Polyline.prototype._convertLatLngs.call(this, latlngs),
|
|
len = result.length;
|
|
|
|
// remove last point if it equals first one
|
|
if (len >= 2 && result[0] instanceof L.LatLng && result[0].equals(result[len - 1])) {
|
|
result.pop();
|
|
}
|
|
return result;
|
|
},
|
|
|
|
_clipPoints: function () {
|
|
if (this.options.noClip) {
|
|
this._parts = this._rings;
|
|
return;
|
|
}
|
|
|
|
// polygons need a different clipping algorithm so we redefine that
|
|
|
|
var bounds = this._renderer._bounds,
|
|
w = this.options.weight,
|
|
p = new L.Point(w, w);
|
|
|
|
// increase clip padding by stroke width to avoid stroke on clip edges
|
|
bounds = new L.Bounds(bounds.min.subtract(p), bounds.max.add(p));
|
|
|
|
this._parts = [];
|
|
|
|
for (var i = 0, len = this._rings.length, clipped; i < len; i++) {
|
|
clipped = L.PolyUtil.clipPolygon(this._rings[i], bounds);
|
|
if (clipped.length) {
|
|
this._parts.push(clipped);
|
|
}
|
|
}
|
|
},
|
|
|
|
_updatePath: function () {
|
|
this._renderer._updatePoly(this, true);
|
|
}
|
|
});
|
|
|
|
L.polygon = function (latlngs, options) {
|
|
return new L.Polygon(latlngs, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
|
|
*/
|
|
|
|
L.Rectangle = L.Polygon.extend({
|
|
initialize: function (latLngBounds, options) {
|
|
L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
|
|
},
|
|
|
|
setBounds: function (latLngBounds) {
|
|
this.setLatLngs(this._boundsToLatLngs(latLngBounds));
|
|
},
|
|
|
|
_boundsToLatLngs: function (latLngBounds) {
|
|
latLngBounds = L.latLngBounds(latLngBounds);
|
|
return [
|
|
latLngBounds.getSouthWest(),
|
|
latLngBounds.getNorthWest(),
|
|
latLngBounds.getNorthEast(),
|
|
latLngBounds.getSouthEast()
|
|
];
|
|
}
|
|
});
|
|
|
|
L.rectangle = function (latLngBounds, options) {
|
|
return new L.Rectangle(latLngBounds, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.CircleMarker is a circle overlay with a permanent pixel radius.
|
|
*/
|
|
|
|
L.CircleMarker = L.Path.extend({
|
|
|
|
options: {
|
|
fill: true,
|
|
radius: 10
|
|
},
|
|
|
|
initialize: function (latlng, options) {
|
|
L.setOptions(this, options);
|
|
this._latlng = L.latLng(latlng);
|
|
this._radius = this.options.radius;
|
|
},
|
|
|
|
setLatLng: function (latlng) {
|
|
this._latlng = L.latLng(latlng);
|
|
this.redraw();
|
|
return this.fire('move', {latlng: this._latlng});
|
|
},
|
|
|
|
getLatLng: function () {
|
|
return this._latlng;
|
|
},
|
|
|
|
setRadius: function (radius) {
|
|
this.options.radius = this._radius = radius;
|
|
return this.redraw();
|
|
},
|
|
|
|
getRadius: function () {
|
|
return this._radius;
|
|
},
|
|
|
|
setStyle : function (options) {
|
|
var radius = options && options.radius || this._radius;
|
|
L.Path.prototype.setStyle.call(this, options);
|
|
this.setRadius(radius);
|
|
return this;
|
|
},
|
|
|
|
_project: function () {
|
|
this._point = this._map.latLngToLayerPoint(this._latlng);
|
|
this._updateBounds();
|
|
},
|
|
|
|
_updateBounds: function () {
|
|
var r = this._radius,
|
|
r2 = this._radiusY || r,
|
|
w = this._clickTolerance(),
|
|
p = [r + w, r2 + w];
|
|
this._pxBounds = new L.Bounds(this._point.subtract(p), this._point.add(p));
|
|
},
|
|
|
|
_update: function () {
|
|
if (this._map) {
|
|
this._updatePath();
|
|
}
|
|
},
|
|
|
|
_updatePath: function () {
|
|
this._renderer._updateCircle(this);
|
|
},
|
|
|
|
_empty: function () {
|
|
return this._radius && !this._renderer._bounds.intersects(this._pxBounds);
|
|
}
|
|
});
|
|
|
|
L.circleMarker = function (latlng, options) {
|
|
return new L.CircleMarker(latlng, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Circle is a circle overlay (with a certain radius in meters).
|
|
* It's an approximation and starts to diverge from a real circle closer to poles (due to projection distortion)
|
|
*/
|
|
|
|
L.Circle = L.CircleMarker.extend({
|
|
|
|
initialize: function (latlng, radius, options) {
|
|
L.setOptions(this, options);
|
|
this._latlng = L.latLng(latlng);
|
|
this._mRadius = radius;
|
|
},
|
|
|
|
setRadius: function (radius) {
|
|
this._mRadius = radius;
|
|
return this.redraw();
|
|
},
|
|
|
|
getRadius: function () {
|
|
return this._mRadius;
|
|
},
|
|
|
|
getBounds: function () {
|
|
var half = [this._radius, this._radiusY];
|
|
|
|
return new L.LatLngBounds(
|
|
this._map.layerPointToLatLng(this._point.subtract(half)),
|
|
this._map.layerPointToLatLng(this._point.add(half)));
|
|
},
|
|
|
|
setStyle: L.Path.prototype.setStyle,
|
|
|
|
_project: function () {
|
|
|
|
var lng = this._latlng.lng,
|
|
lat = this._latlng.lat,
|
|
map = this._map,
|
|
crs = map.options.crs;
|
|
|
|
if (crs.distance === L.CRS.Earth.distance) {
|
|
var d = Math.PI / 180,
|
|
latR = (this._mRadius / L.CRS.Earth.R) / d,
|
|
top = map.project([lat + latR, lng]),
|
|
bottom = map.project([lat - latR, lng]),
|
|
p = top.add(bottom).divideBy(2),
|
|
lat2 = map.unproject(p).lat,
|
|
lngR = Math.acos((Math.cos(latR * d) - Math.sin(lat * d) * Math.sin(lat2 * d)) /
|
|
(Math.cos(lat * d) * Math.cos(lat2 * d))) / d;
|
|
|
|
this._point = p.subtract(map.getPixelOrigin());
|
|
this._radius = isNaN(lngR) ? 0 : Math.max(Math.round(p.x - map.project([lat2, lng - lngR]).x), 1);
|
|
this._radiusY = Math.max(Math.round(p.y - top.y), 1);
|
|
|
|
} else {
|
|
var latlng2 = crs.unproject(crs.project(this._latlng).subtract([this._mRadius, 0]));
|
|
|
|
this._point = map.latLngToLayerPoint(this._latlng);
|
|
this._radius = this._point.x - map.latLngToLayerPoint(latlng2).x;
|
|
}
|
|
|
|
this._updateBounds();
|
|
}
|
|
});
|
|
|
|
L.circle = function (latlng, radius, options) {
|
|
return new L.Circle(latlng, radius, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.SVG renders vector layers with SVG. All SVG-specific code goes here.
|
|
*/
|
|
|
|
L.SVG = L.Renderer.extend({
|
|
|
|
_initContainer: function () {
|
|
this._container = L.SVG.create('svg');
|
|
|
|
this._paths = {};
|
|
this._initEvents();
|
|
|
|
// makes it possible to click through svg root; we'll reset it back in individual paths
|
|
this._container.setAttribute('pointer-events', 'none');
|
|
},
|
|
|
|
_update: function () {
|
|
if (this._map._animatingZoom && this._bounds) { return; }
|
|
|
|
L.Renderer.prototype._update.call(this);
|
|
|
|
var b = this._bounds,
|
|
size = b.getSize(),
|
|
container = this._container;
|
|
|
|
L.DomUtil.setPosition(container, b.min);
|
|
|
|
// set size of svg-container if changed
|
|
if (!this._svgSize || !this._svgSize.equals(size)) {
|
|
this._svgSize = size;
|
|
container.setAttribute('width', size.x);
|
|
container.setAttribute('height', size.y);
|
|
}
|
|
|
|
// movement: update container viewBox so that we don't have to change coordinates of individual layers
|
|
L.DomUtil.setPosition(container, b.min);
|
|
container.setAttribute('viewBox', [b.min.x, b.min.y, size.x, size.y].join(' '));
|
|
},
|
|
|
|
// methods below are called by vector layers implementations
|
|
|
|
_initPath: function (layer) {
|
|
var path = layer._path = L.SVG.create('path');
|
|
|
|
if (layer.options.className) {
|
|
L.DomUtil.addClass(path, layer.options.className);
|
|
}
|
|
|
|
if (layer.options.interactive) {
|
|
L.DomUtil.addClass(path, 'leaflet-interactive');
|
|
}
|
|
|
|
this._updateStyle(layer);
|
|
},
|
|
|
|
_addPath: function (layer) {
|
|
var path = layer._path;
|
|
this._container.appendChild(path);
|
|
this._paths[L.stamp(path)] = layer;
|
|
},
|
|
|
|
_removePath: function (layer) {
|
|
var path = layer._path;
|
|
L.DomUtil.remove(path);
|
|
delete this._paths[L.stamp(path)];
|
|
},
|
|
|
|
_updatePath: function (layer) {
|
|
layer._project();
|
|
layer._update();
|
|
},
|
|
|
|
_updateStyle: function (layer) {
|
|
var path = layer._path,
|
|
options = layer.options;
|
|
|
|
if (!path) { return; }
|
|
|
|
if (options.stroke) {
|
|
path.setAttribute('stroke', options.color);
|
|
path.setAttribute('stroke-opacity', options.opacity);
|
|
path.setAttribute('stroke-width', options.weight);
|
|
path.setAttribute('stroke-linecap', options.lineCap);
|
|
path.setAttribute('stroke-linejoin', options.lineJoin);
|
|
|
|
if (options.dashArray) {
|
|
path.setAttribute('stroke-dasharray', options.dashArray);
|
|
} else {
|
|
path.removeAttribute('stroke-dasharray');
|
|
}
|
|
|
|
if (options.dashOffset) {
|
|
path.setAttribute('stroke-dashoffset', options.dashOffset);
|
|
} else {
|
|
path.removeAttribute('stroke-dashoffset');
|
|
}
|
|
} else {
|
|
path.setAttribute('stroke', 'none');
|
|
}
|
|
|
|
if (options.fill) {
|
|
path.setAttribute('fill', options.fillColor || options.color);
|
|
path.setAttribute('fill-opacity', options.fillOpacity);
|
|
path.setAttribute('fill-rule', options.fillRule || 'evenodd');
|
|
} else {
|
|
path.setAttribute('fill', 'none');
|
|
}
|
|
|
|
path.setAttribute('pointer-events', options.pointerEvents || (options.interactive ? 'visiblePainted' : 'none'));
|
|
},
|
|
|
|
_updatePoly: function (layer, closed) {
|
|
this._setPath(layer, L.SVG.pointsToPath(layer._parts, closed));
|
|
},
|
|
|
|
_updateCircle: function (layer) {
|
|
var p = layer._point,
|
|
r = layer._radius,
|
|
r2 = layer._radiusY || r,
|
|
arc = 'a' + r + ',' + r2 + ' 0 1,0 ';
|
|
|
|
// drawing a circle with two half-arcs
|
|
var d = layer._empty() ? 'M0 0' :
|
|
'M' + (p.x - r) + ',' + p.y +
|
|
arc + (r * 2) + ',0 ' +
|
|
arc + (-r * 2) + ',0 ';
|
|
|
|
this._setPath(layer, d);
|
|
},
|
|
|
|
_setPath: function (layer, path) {
|
|
layer._path.setAttribute('d', path);
|
|
},
|
|
|
|
// SVG does not have the concept of zIndex so we resort to changing the DOM order of elements
|
|
_bringToFront: function (layer) {
|
|
L.DomUtil.toFront(layer._path);
|
|
},
|
|
|
|
_bringToBack: function (layer) {
|
|
L.DomUtil.toBack(layer._path);
|
|
},
|
|
|
|
// TODO remove duplication with L.Map
|
|
_initEvents: function () {
|
|
L.DomEvent.on(this._container, 'click dblclick mousedown mouseup mouseover mouseout mousemove contextmenu',
|
|
this._fireMouseEvent, this);
|
|
},
|
|
|
|
_fireMouseEvent: function (e) {
|
|
var path = this._paths[L.stamp(e.target || e.srcElement)];
|
|
if (path) {
|
|
path._fireMouseEvent(e);
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
L.extend(L.SVG, {
|
|
create: function (name) {
|
|
return document.createElementNS('http://www.w3.org/2000/svg', name);
|
|
},
|
|
|
|
// generates SVG path string for multiple rings, with each ring turning into "M..L..L.." instructions
|
|
pointsToPath: function (rings, closed) {
|
|
var str = '',
|
|
i, j, len, len2, points, p;
|
|
|
|
for (i = 0, len = rings.length; i < len; i++) {
|
|
points = rings[i];
|
|
|
|
for (j = 0, len2 = points.length; j < len2; j++) {
|
|
p = points[j];
|
|
str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
|
|
}
|
|
|
|
// closes the ring for polygons; "x" is VML syntax
|
|
str += closed ? (L.Browser.svg ? 'z' : 'x') : '';
|
|
}
|
|
|
|
// SVG complains about empty path strings
|
|
return str || 'M0 0';
|
|
}
|
|
});
|
|
|
|
L.Browser.svg = !!(document.createElementNS && L.SVG.create('svg').createSVGRect);
|
|
|
|
L.svg = function (options) {
|
|
return L.Browser.svg || L.Browser.vml ? new L.SVG(options) : null;
|
|
};
|
|
|
|
|
|
/*
|
|
* Vector rendering for IE7-8 through VML.
|
|
* Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
|
|
*/
|
|
|
|
L.Browser.vml = !L.Browser.svg && (function () {
|
|
try {
|
|
var div = document.createElement('div');
|
|
div.innerHTML = '<v:shape adj="1"/>';
|
|
|
|
var shape = div.firstChild;
|
|
shape.style.behavior = 'url(#default#VML)';
|
|
|
|
return shape && (typeof shape.adj === 'object');
|
|
|
|
} catch (e) {
|
|
return false;
|
|
}
|
|
}());
|
|
|
|
// redefine some SVG methods to handle VML syntax which is similar but with some differences
|
|
L.SVG.include(!L.Browser.vml ? {} : {
|
|
|
|
_initContainer: function () {
|
|
this._container = L.DomUtil.create('div', 'leaflet-vml-container');
|
|
|
|
this._paths = {};
|
|
this._initEvents();
|
|
},
|
|
|
|
_update: function () {
|
|
if (this._map._animatingZoom) { return; }
|
|
L.Renderer.prototype._update.call(this);
|
|
},
|
|
|
|
_initPath: function (layer) {
|
|
var container = layer._container = L.SVG.create('shape');
|
|
|
|
L.DomUtil.addClass(container, 'leaflet-vml-shape ' + (this.options.className || ''));
|
|
|
|
container.coordsize = '1 1';
|
|
|
|
layer._path = L.SVG.create('path');
|
|
container.appendChild(layer._path);
|
|
|
|
this._updateStyle(layer);
|
|
},
|
|
|
|
_addPath: function (layer) {
|
|
var container = layer._container;
|
|
this._container.appendChild(container);
|
|
this._paths[L.stamp(container)] = layer;
|
|
},
|
|
|
|
_removePath: function (layer) {
|
|
var container = layer._container;
|
|
L.DomUtil.remove(container);
|
|
delete this._paths[L.stamp(container)];
|
|
},
|
|
|
|
_updateStyle: function (layer) {
|
|
var stroke = layer._stroke,
|
|
fill = layer._fill,
|
|
options = layer.options,
|
|
container = layer._container;
|
|
|
|
container.stroked = !!options.stroke;
|
|
container.filled = !!options.fill;
|
|
|
|
if (options.stroke) {
|
|
if (!stroke) {
|
|
stroke = layer._stroke = L.SVG.create('stroke');
|
|
container.appendChild(stroke);
|
|
}
|
|
stroke.weight = options.weight + 'px';
|
|
stroke.color = options.color;
|
|
stroke.opacity = options.opacity;
|
|
|
|
if (options.dashArray) {
|
|
stroke.dashStyle = L.Util.isArray(options.dashArray) ?
|
|
options.dashArray.join(' ') :
|
|
options.dashArray.replace(/( *, *)/g, ' ');
|
|
} else {
|
|
stroke.dashStyle = '';
|
|
}
|
|
stroke.endcap = options.lineCap.replace('butt', 'flat');
|
|
stroke.joinstyle = options.lineJoin;
|
|
|
|
} else if (stroke) {
|
|
container.removeChild(stroke);
|
|
layer._stroke = null;
|
|
}
|
|
|
|
if (options.fill) {
|
|
if (!fill) {
|
|
fill = layer._fill = L.SVG.create('fill');
|
|
container.appendChild(fill);
|
|
}
|
|
fill.color = options.fillColor || options.color;
|
|
fill.opacity = options.fillOpacity;
|
|
|
|
} else if (fill) {
|
|
container.removeChild(fill);
|
|
layer._fill = null;
|
|
}
|
|
},
|
|
|
|
_updateCircle: function (layer) {
|
|
var p = layer._point.round(),
|
|
r = Math.round(layer._radius),
|
|
r2 = Math.round(layer._radiusY || r);
|
|
|
|
this._setPath(layer, layer._empty() ? 'M0 0' :
|
|
'AL ' + p.x + ',' + p.y + ' ' + r + ',' + r2 + ' 0,' + (65535 * 360));
|
|
},
|
|
|
|
_setPath: function (layer, path) {
|
|
layer._path.v = path;
|
|
},
|
|
|
|
_bringToFront: function (layer) {
|
|
L.DomUtil.toFront(layer._container);
|
|
},
|
|
|
|
_bringToBack: function (layer) {
|
|
L.DomUtil.toBack(layer._container);
|
|
}
|
|
});
|
|
|
|
if (L.Browser.vml) {
|
|
L.SVG.create = (function () {
|
|
try {
|
|
document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
|
|
return function (name) {
|
|
return document.createElement('<lvml:' + name + ' class="lvml">');
|
|
};
|
|
} catch (e) {
|
|
return function (name) {
|
|
return document.createElement('<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
|
|
};
|
|
}
|
|
})();
|
|
}
|
|
|
|
|
|
/*
|
|
* L.Canvas handles Canvas vector layers rendering and mouse events handling. All Canvas-specific code goes here.
|
|
*/
|
|
|
|
L.Canvas = L.Renderer.extend({
|
|
|
|
onAdd: function () {
|
|
L.Renderer.prototype.onAdd.call(this);
|
|
|
|
this._layers = this._layers || {};
|
|
|
|
// redraw vectors since canvas is cleared upon removal
|
|
this._draw();
|
|
},
|
|
|
|
_initContainer: function () {
|
|
var container = this._container = document.createElement('canvas');
|
|
|
|
L.DomEvent
|
|
.on(container, 'mousemove', this._onMouseMove, this)
|
|
.on(container, 'click dblclick mousedown mouseup contextmenu', this._onClick, this);
|
|
|
|
this._ctx = container.getContext('2d');
|
|
},
|
|
|
|
_update: function () {
|
|
if (this._map._animatingZoom && this._bounds) { return; }
|
|
|
|
L.Renderer.prototype._update.call(this);
|
|
|
|
var b = this._bounds,
|
|
container = this._container,
|
|
size = b.getSize(),
|
|
m = L.Browser.retina ? 2 : 1;
|
|
|
|
L.DomUtil.setPosition(container, b.min);
|
|
|
|
// set canvas size (also clearing it); use double size on retina
|
|
container.width = m * size.x;
|
|
container.height = m * size.y;
|
|
container.style.width = size.x + 'px';
|
|
container.style.height = size.y + 'px';
|
|
|
|
if (L.Browser.retina) {
|
|
this._ctx.scale(2, 2);
|
|
}
|
|
|
|
// translate so we use the same path coordinates after canvas element moves
|
|
this._ctx.translate(-b.min.x, -b.min.y);
|
|
},
|
|
|
|
_initPath: function (layer) {
|
|
this._layers[L.stamp(layer)] = layer;
|
|
},
|
|
|
|
_addPath: L.Util.falseFn,
|
|
|
|
_removePath: function (layer) {
|
|
layer._removed = true;
|
|
this._requestRedraw(layer);
|
|
},
|
|
|
|
_updatePath: function (layer) {
|
|
this._redrawBounds = layer._pxBounds;
|
|
this._draw(true);
|
|
layer._project();
|
|
layer._update();
|
|
this._draw();
|
|
this._redrawBounds = null;
|
|
},
|
|
|
|
_updateStyle: function (layer) {
|
|
this._requestRedraw(layer);
|
|
},
|
|
|
|
_requestRedraw: function (layer) {
|
|
if (!this._map) { return; }
|
|
|
|
this._redrawBounds = this._redrawBounds || new L.Bounds();
|
|
this._redrawBounds.extend(layer._pxBounds.min).extend(layer._pxBounds.max);
|
|
|
|
this._redrawRequest = this._redrawRequest || L.Util.requestAnimFrame(this._redraw, this);
|
|
},
|
|
|
|
_redraw: function () {
|
|
this._redrawRequest = null;
|
|
|
|
this._draw(true); // clear layers in redraw bounds
|
|
this._draw(); // draw layers
|
|
|
|
this._redrawBounds = null;
|
|
},
|
|
|
|
_draw: function (clear) {
|
|
this._clear = clear;
|
|
var layer;
|
|
|
|
for (var id in this._layers) {
|
|
layer = this._layers[id];
|
|
if (!this._redrawBounds || layer._pxBounds.intersects(this._redrawBounds)) {
|
|
layer._updatePath();
|
|
}
|
|
if (clear && layer._removed) {
|
|
delete layer._removed;
|
|
delete this._layers[id];
|
|
}
|
|
}
|
|
},
|
|
|
|
_updatePoly: function (layer, closed) {
|
|
|
|
var i, j, len2, p,
|
|
parts = layer._parts,
|
|
len = parts.length,
|
|
ctx = this._ctx;
|
|
|
|
if (!len) { return; }
|
|
|
|
ctx.beginPath();
|
|
|
|
for (i = 0; i < len; i++) {
|
|
for (j = 0, len2 = parts[i].length; j < len2; j++) {
|
|
p = parts[i][j];
|
|
ctx[j ? 'lineTo' : 'moveTo'](p.x, p.y);
|
|
}
|
|
if (closed) {
|
|
ctx.closePath();
|
|
}
|
|
}
|
|
|
|
this._fillStroke(ctx, layer);
|
|
|
|
// TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
|
|
},
|
|
|
|
_updateCircle: function (layer) {
|
|
|
|
if (layer._empty()) { return; }
|
|
|
|
var p = layer._point,
|
|
ctx = this._ctx,
|
|
r = layer._radius,
|
|
s = (layer._radiusY || r) / r;
|
|
|
|
if (s !== 1) {
|
|
ctx.save();
|
|
ctx.scale(1, s);
|
|
}
|
|
|
|
ctx.beginPath();
|
|
ctx.arc(p.x, p.y / s, r, 0, Math.PI * 2, false);
|
|
|
|
if (s !== 1) {
|
|
ctx.restore();
|
|
}
|
|
|
|
this._fillStroke(ctx, layer);
|
|
},
|
|
|
|
_fillStroke: function (ctx, layer) {
|
|
var clear = this._clear,
|
|
options = layer.options;
|
|
|
|
ctx.globalCompositeOperation = clear ? 'destination-out' : 'source-over';
|
|
|
|
if (options.fill) {
|
|
ctx.globalAlpha = clear ? 1 : options.fillOpacity;
|
|
ctx.fillStyle = options.fillColor || options.color;
|
|
ctx.fill(options.fillRule || 'evenodd');
|
|
}
|
|
|
|
if (options.stroke) {
|
|
ctx.globalAlpha = clear ? 1 : options.opacity;
|
|
|
|
// if clearing shape, do it with the previously drawn line width
|
|
layer._prevWeight = ctx.lineWidth = clear ? layer._prevWeight + 1 : options.weight;
|
|
|
|
ctx.strokeStyle = options.color;
|
|
ctx.lineCap = options.lineCap;
|
|
ctx.lineJoin = options.lineJoin;
|
|
ctx.stroke();
|
|
}
|
|
},
|
|
|
|
// Canvas obviously doesn't have mouse events for individual drawn objects,
|
|
// so we emulate that by calculating what's under the mouse on mousemove/click manually
|
|
|
|
_onClick: function (e) {
|
|
var point = this._map.mouseEventToLayerPoint(e);
|
|
|
|
for (var id in this._layers) {
|
|
if (this._layers[id]._containsPoint(point)) {
|
|
this._layers[id]._fireMouseEvent(e);
|
|
}
|
|
}
|
|
},
|
|
|
|
_onMouseMove: function (e) {
|
|
if (!this._map || this._map._animatingZoom) { return; }
|
|
|
|
var point = this._map.mouseEventToLayerPoint(e);
|
|
|
|
// TODO don't do on each move event, throttle since it's expensive
|
|
for (var id in this._layers) {
|
|
this._handleHover(this._layers[id], e, point);
|
|
}
|
|
},
|
|
|
|
_handleHover: function (layer, e, point) {
|
|
if (!layer.options.interactive) { return; }
|
|
|
|
if (layer._containsPoint(point)) {
|
|
// if we just got inside the layer, fire mouseover
|
|
if (!layer._mouseInside) {
|
|
L.DomUtil.addClass(this._container, 'leaflet-interactive'); // change cursor
|
|
layer._fireMouseEvent(e, 'mouseover');
|
|
layer._mouseInside = true;
|
|
}
|
|
// fire mousemove
|
|
layer._fireMouseEvent(e);
|
|
|
|
} else if (layer._mouseInside) {
|
|
// if we're leaving the layer, fire mouseout
|
|
L.DomUtil.removeClass(this._container, 'leaflet-interactive');
|
|
layer._fireMouseEvent(e, 'mouseout');
|
|
layer._mouseInside = false;
|
|
}
|
|
},
|
|
|
|
// TODO _bringToFront & _bringToBack, pretty tricky
|
|
|
|
_bringToFront: L.Util.falseFn,
|
|
_bringToBack: L.Util.falseFn
|
|
});
|
|
|
|
L.Browser.canvas = (function () {
|
|
return !!document.createElement('canvas').getContext;
|
|
}());
|
|
|
|
L.canvas = function (options) {
|
|
return L.Browser.canvas ? new L.Canvas(options) : null;
|
|
};
|
|
|
|
L.Polyline.prototype._containsPoint = function (p, closed) {
|
|
var i, j, k, len, len2, part,
|
|
w = this._clickTolerance();
|
|
|
|
if (!this._pxBounds.contains(p)) { return false; }
|
|
|
|
// hit detection for polylines
|
|
for (i = 0, len = this._parts.length; i < len; i++) {
|
|
part = this._parts[i];
|
|
|
|
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
|
|
if (!closed && (j === 0)) { continue; }
|
|
|
|
if (L.LineUtil.pointToSegmentDistance(p, part[k], part[j]) <= w) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
};
|
|
|
|
L.Polygon.prototype._containsPoint = function (p) {
|
|
var inside = false,
|
|
part, p1, p2, i, j, k, len, len2;
|
|
|
|
if (!this._pxBounds.contains(p)) { return false; }
|
|
|
|
// ray casting algorithm for detecting if point is in polygon
|
|
for (i = 0, len = this._parts.length; i < len; i++) {
|
|
part = this._parts[i];
|
|
|
|
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
|
|
p1 = part[j];
|
|
p2 = part[k];
|
|
|
|
if (((p1.y > p.y) !== (p2.y > p.y)) && (p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
|
|
inside = !inside;
|
|
}
|
|
}
|
|
}
|
|
|
|
// also check if it's on polygon stroke
|
|
return inside || L.Polyline.prototype._containsPoint.call(this, p, true);
|
|
};
|
|
|
|
L.CircleMarker.prototype._containsPoint = function (p) {
|
|
return p.distanceTo(this._point) <= this._radius + this._clickTolerance();
|
|
};
|
|
|
|
|
|
/*
|
|
* L.GeoJSON turns any GeoJSON data into a Leaflet layer.
|
|
*/
|
|
|
|
L.GeoJSON = L.FeatureGroup.extend({
|
|
|
|
initialize: function (geojson, options) {
|
|
L.setOptions(this, options);
|
|
|
|
this._layers = {};
|
|
|
|
if (geojson) {
|
|
this.addData(geojson);
|
|
}
|
|
},
|
|
|
|
addData: function (geojson) {
|
|
var features = L.Util.isArray(geojson) ? geojson : geojson.features,
|
|
i, len, feature;
|
|
|
|
if (features) {
|
|
for (i = 0, len = features.length; i < len; i++) {
|
|
// only add this if geometry or geometries are set and not null
|
|
feature = features[i];
|
|
if (feature.geometries || feature.geometry || feature.features || feature.coordinates) {
|
|
this.addData(feature);
|
|
}
|
|
}
|
|
return this;
|
|
}
|
|
|
|
var options = this.options;
|
|
|
|
if (options.filter && !options.filter(geojson)) { return; }
|
|
|
|
var layer = L.GeoJSON.geometryToLayer(geojson, options);
|
|
layer.feature = L.GeoJSON.asFeature(geojson);
|
|
|
|
layer.defaultOptions = layer.options;
|
|
this.resetStyle(layer);
|
|
|
|
if (options.onEachFeature) {
|
|
options.onEachFeature(geojson, layer);
|
|
}
|
|
|
|
return this.addLayer(layer);
|
|
},
|
|
|
|
resetStyle: function (layer) {
|
|
// reset any custom styles
|
|
layer.options = layer.defaultOptions;
|
|
this._setLayerStyle(layer, this.options.style);
|
|
return this;
|
|
},
|
|
|
|
setStyle: function (style) {
|
|
return this.eachLayer(function (layer) {
|
|
this._setLayerStyle(layer, style);
|
|
}, this);
|
|
},
|
|
|
|
_setLayerStyle: function (layer, style) {
|
|
if (typeof style === 'function') {
|
|
style = style(layer.feature);
|
|
}
|
|
if (layer.setStyle) {
|
|
layer.setStyle(style);
|
|
}
|
|
}
|
|
});
|
|
|
|
L.extend(L.GeoJSON, {
|
|
geometryToLayer: function (geojson, options) {
|
|
|
|
var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
|
|
coords = geometry.coordinates,
|
|
layers = [],
|
|
pointToLayer = options && options.pointToLayer,
|
|
coordsToLatLng = options && options.coordsToLatLng || this.coordsToLatLng,
|
|
latlng, latlngs, i, len;
|
|
|
|
switch (geometry.type) {
|
|
case 'Point':
|
|
latlng = coordsToLatLng(coords);
|
|
return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
|
|
|
|
case 'MultiPoint':
|
|
for (i = 0, len = coords.length; i < len; i++) {
|
|
latlng = coordsToLatLng(coords[i]);
|
|
layers.push(pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng));
|
|
}
|
|
return new L.FeatureGroup(layers);
|
|
|
|
case 'LineString':
|
|
case 'MultiLineString':
|
|
latlngs = this.coordsToLatLngs(coords, geometry.type === 'LineString' ? 0 : 1, coordsToLatLng);
|
|
return new L.Polyline(latlngs, options);
|
|
|
|
case 'Polygon':
|
|
case 'MultiPolygon':
|
|
latlngs = this.coordsToLatLngs(coords, geometry.type === 'Polygon' ? 1 : 2, coordsToLatLng);
|
|
return new L.Polygon(latlngs, options);
|
|
|
|
case 'GeometryCollection':
|
|
for (i = 0, len = geometry.geometries.length; i < len; i++) {
|
|
|
|
layers.push(this.geometryToLayer({
|
|
geometry: geometry.geometries[i],
|
|
type: 'Feature',
|
|
properties: geojson.properties
|
|
}, options));
|
|
}
|
|
return new L.FeatureGroup(layers);
|
|
|
|
default:
|
|
throw new Error('Invalid GeoJSON object.');
|
|
}
|
|
},
|
|
|
|
coordsToLatLng: function (coords) {
|
|
return new L.LatLng(coords[1], coords[0], coords[2]);
|
|
},
|
|
|
|
coordsToLatLngs: function (coords, levelsDeep, coordsToLatLng) {
|
|
var latlngs = [];
|
|
|
|
for (var i = 0, len = coords.length, latlng; i < len; i++) {
|
|
latlng = levelsDeep ?
|
|
this.coordsToLatLngs(coords[i], levelsDeep - 1, coordsToLatLng) :
|
|
(coordsToLatLng || this.coordsToLatLng)(coords[i]);
|
|
|
|
latlngs.push(latlng);
|
|
}
|
|
|
|
return latlngs;
|
|
},
|
|
|
|
latLngToCoords: function (latlng) {
|
|
return latlng.alt !== undefined ?
|
|
[latlng.lng, latlng.lat, latlng.alt] :
|
|
[latlng.lng, latlng.lat];
|
|
},
|
|
|
|
latLngsToCoords: function (latlngs, levelsDeep, closed) {
|
|
var coords = [];
|
|
|
|
for (var i = 0, len = latlngs.length; i < len; i++) {
|
|
coords.push(levelsDeep ?
|
|
L.GeoJSON.latLngsToCoords(latlngs[i], levelsDeep - 1, closed):
|
|
L.GeoJSON.latLngToCoords(latlngs[i]));
|
|
}
|
|
|
|
if (!levelsDeep && closed) {
|
|
coords.push(coords[0]);
|
|
}
|
|
|
|
return coords;
|
|
},
|
|
|
|
getFeature: function (layer, newGeometry) {
|
|
return layer.feature ?
|
|
L.extend({}, layer.feature, {geometry: newGeometry}) :
|
|
L.GeoJSON.asFeature(newGeometry);
|
|
},
|
|
|
|
asFeature: function (geoJSON) {
|
|
if (geoJSON.type === 'Feature') {
|
|
return geoJSON;
|
|
}
|
|
|
|
return {
|
|
type: 'Feature',
|
|
properties: {},
|
|
geometry: geoJSON
|
|
};
|
|
}
|
|
});
|
|
|
|
var PointToGeoJSON = {
|
|
toGeoJSON: function () {
|
|
return L.GeoJSON.getFeature(this, {
|
|
type: 'Point',
|
|
coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
|
|
});
|
|
}
|
|
};
|
|
|
|
L.Marker.include(PointToGeoJSON);
|
|
L.Circle.include(PointToGeoJSON);
|
|
L.CircleMarker.include(PointToGeoJSON);
|
|
|
|
L.Polyline.prototype.toGeoJSON = function () {
|
|
var multi = !this._flat(this._latlngs);
|
|
|
|
var coords = L.GeoJSON.latLngsToCoords(this._latlngs, multi ? 1 : 0);
|
|
|
|
return L.GeoJSON.getFeature(this, {
|
|
type: (multi ? 'Multi' : '') + 'LineString',
|
|
coordinates: coords
|
|
});
|
|
};
|
|
|
|
L.Polygon.prototype.toGeoJSON = function () {
|
|
var holes = !this._flat(this._latlngs),
|
|
multi = holes && !this._flat(this._latlngs[0]);
|
|
|
|
var coords = L.GeoJSON.latLngsToCoords(this._latlngs, multi ? 2 : holes ? 1 : 0, true);
|
|
|
|
if (!holes) {
|
|
coords = [coords];
|
|
}
|
|
|
|
return L.GeoJSON.getFeature(this, {
|
|
type: (multi ? 'Multi' : '') + 'Polygon',
|
|
coordinates: coords
|
|
});
|
|
};
|
|
|
|
|
|
L.LayerGroup.include({
|
|
toMultiPoint: function () {
|
|
var coords = [];
|
|
|
|
this.eachLayer(function (layer) {
|
|
coords.push(layer.toGeoJSON().geometry.coordinates);
|
|
});
|
|
|
|
return L.GeoJSON.getFeature(this, {
|
|
type: 'MultiPoint',
|
|
coordinates: coords
|
|
});
|
|
},
|
|
|
|
toGeoJSON: function () {
|
|
|
|
var type = this.feature && this.feature.geometry && this.feature.geometry.type;
|
|
|
|
if (type === 'MultiPoint') {
|
|
return this.toMultiPoint();
|
|
}
|
|
|
|
var isGeometryCollection = type === 'GeometryCollection',
|
|
jsons = [];
|
|
|
|
this.eachLayer(function (layer) {
|
|
if (layer.toGeoJSON) {
|
|
var json = layer.toGeoJSON();
|
|
jsons.push(isGeometryCollection ? json.geometry : L.GeoJSON.asFeature(json));
|
|
}
|
|
});
|
|
|
|
if (isGeometryCollection) {
|
|
return L.GeoJSON.getFeature(this, {
|
|
geometries: jsons,
|
|
type: 'GeometryCollection'
|
|
});
|
|
}
|
|
|
|
return {
|
|
type: 'FeatureCollection',
|
|
features: jsons
|
|
};
|
|
}
|
|
});
|
|
|
|
L.geoJson = function (geojson, options) {
|
|
return new L.GeoJSON(geojson, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.DomEvent contains functions for working with DOM events.
|
|
* Inspired by John Resig, Dean Edwards and YUI addEvent implementations.
|
|
*/
|
|
|
|
var eventsKey = '_leaflet_events';
|
|
|
|
L.DomEvent = {
|
|
|
|
on: function (obj, types, fn, context) {
|
|
|
|
if (typeof types === 'object') {
|
|
for (var type in types) {
|
|
this._on(obj, type, types[type], fn);
|
|
}
|
|
} else {
|
|
types = L.Util.splitWords(types);
|
|
|
|
for (var i = 0, len = types.length; i < len; i++) {
|
|
this._on(obj, types[i], fn, context);
|
|
}
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
off: function (obj, types, fn, context) {
|
|
|
|
if (typeof types === 'object') {
|
|
for (var type in types) {
|
|
this._off(obj, type, types[type], fn);
|
|
}
|
|
} else {
|
|
types = L.Util.splitWords(types);
|
|
|
|
for (var i = 0, len = types.length; i < len; i++) {
|
|
this._off(obj, types[i], fn, context);
|
|
}
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_on: function (obj, type, fn, context) {
|
|
var id = type + L.stamp(fn) + (context ? '_' + L.stamp(context) : '');
|
|
|
|
if (obj[eventsKey] && obj[eventsKey][id]) { return this; }
|
|
|
|
var handler = function (e) {
|
|
return fn.call(context || obj, e || window.event);
|
|
};
|
|
|
|
var originalHandler = handler;
|
|
|
|
if (L.Browser.pointer && type.indexOf('touch') === 0) {
|
|
this.addPointerListener(obj, type, handler, id);
|
|
|
|
} else if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
|
|
this.addDoubleTapListener(obj, handler, id);
|
|
|
|
} else if ('addEventListener' in obj) {
|
|
|
|
if (type === 'mousewheel') {
|
|
obj.addEventListener('DOMMouseScroll', handler, false);
|
|
obj.addEventListener(type, handler, false);
|
|
|
|
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
|
|
handler = function (e) {
|
|
e = e || window.event;
|
|
if (!L.DomEvent._checkMouse(obj, e)) { return; }
|
|
return originalHandler(e);
|
|
};
|
|
obj.addEventListener(type === 'mouseenter' ? 'mouseover' : 'mouseout', handler, false);
|
|
|
|
} else {
|
|
if (type === 'click' && L.Browser.android) {
|
|
handler = function (e) {
|
|
return L.DomEvent._filterClick(e, originalHandler);
|
|
};
|
|
}
|
|
obj.addEventListener(type, handler, false);
|
|
}
|
|
|
|
} else if ('attachEvent' in obj) {
|
|
obj.attachEvent('on' + type, handler);
|
|
}
|
|
|
|
obj[eventsKey] = obj[eventsKey] || {};
|
|
obj[eventsKey][id] = handler;
|
|
|
|
return this;
|
|
},
|
|
|
|
_off: function (obj, type, fn, context) {
|
|
|
|
var id = type + L.stamp(fn) + (context ? '_' + L.stamp(context) : ''),
|
|
handler = obj[eventsKey] && obj[eventsKey][id];
|
|
|
|
if (!handler) { return this; }
|
|
|
|
if (L.Browser.pointer && type.indexOf('touch') === 0) {
|
|
this.removePointerListener(obj, type, id);
|
|
|
|
} else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
|
|
this.removeDoubleTapListener(obj, id);
|
|
|
|
} else if ('removeEventListener' in obj) {
|
|
|
|
if (type === 'mousewheel') {
|
|
obj.removeEventListener('DOMMouseScroll', handler, false);
|
|
obj.removeEventListener(type, handler, false);
|
|
|
|
} else {
|
|
obj.removeEventListener(
|
|
type === 'mouseenter' ? 'mouseover' :
|
|
type === 'mouseleave' ? 'mouseout' : type, handler, false);
|
|
}
|
|
|
|
} else if ('detachEvent' in obj) {
|
|
obj.detachEvent('on' + type, handler);
|
|
}
|
|
|
|
obj[eventsKey][id] = null;
|
|
|
|
return this;
|
|
},
|
|
|
|
stopPropagation: function (e) {
|
|
|
|
if (e.stopPropagation) {
|
|
e.stopPropagation();
|
|
} else {
|
|
e.cancelBubble = true;
|
|
}
|
|
L.DomEvent._skipped(e);
|
|
|
|
return this;
|
|
},
|
|
|
|
disableScrollPropagation: function (el) {
|
|
return L.DomEvent.on(el, 'mousewheel MozMousePixelScroll', L.DomEvent.stopPropagation);
|
|
},
|
|
|
|
disableClickPropagation: function (el) {
|
|
var stop = L.DomEvent.stopPropagation;
|
|
|
|
L.DomEvent.on(el, L.Draggable.START.join(' '), stop);
|
|
|
|
return L.DomEvent.on(el, {
|
|
click: L.DomEvent._fakeStop,
|
|
dblclick: stop
|
|
});
|
|
},
|
|
|
|
preventDefault: function (e) {
|
|
|
|
if (e.preventDefault) {
|
|
e.preventDefault();
|
|
} else {
|
|
e.returnValue = false;
|
|
}
|
|
return this;
|
|
},
|
|
|
|
stop: function (e) {
|
|
return L.DomEvent
|
|
.preventDefault(e)
|
|
.stopPropagation(e);
|
|
},
|
|
|
|
getMousePosition: function (e, container) {
|
|
if (!container) {
|
|
return new L.Point(e.clientX, e.clientY);
|
|
}
|
|
|
|
var rect = container.getBoundingClientRect();
|
|
|
|
return new L.Point(
|
|
e.clientX - rect.left - container.clientLeft,
|
|
e.clientY - rect.top - container.clientTop);
|
|
},
|
|
|
|
getWheelDelta: function (e) {
|
|
|
|
var delta = 0;
|
|
|
|
if (e.wheelDelta) {
|
|
delta = e.wheelDelta / 120;
|
|
}
|
|
if (e.detail) {
|
|
delta = -e.detail / 3;
|
|
}
|
|
return delta;
|
|
},
|
|
|
|
_skipEvents: {},
|
|
|
|
_fakeStop: function (e) {
|
|
// fakes stopPropagation by setting a special event flag, checked/reset with L.DomEvent._skipped(e)
|
|
L.DomEvent._skipEvents[e.type] = true;
|
|
},
|
|
|
|
_skipped: function (e) {
|
|
var skipped = this._skipEvents[e.type];
|
|
// reset when checking, as it's only used in map container and propagates outside of the map
|
|
this._skipEvents[e.type] = false;
|
|
return skipped;
|
|
},
|
|
|
|
// check if element really left/entered the event target (for mouseenter/mouseleave)
|
|
_checkMouse: function (el, e) {
|
|
|
|
var related = e.relatedTarget;
|
|
|
|
if (!related) { return true; }
|
|
|
|
try {
|
|
while (related && (related !== el)) {
|
|
related = related.parentNode;
|
|
}
|
|
} catch (err) {
|
|
return false;
|
|
}
|
|
return (related !== el);
|
|
},
|
|
|
|
// this is a horrible workaround for a bug in Android where a single touch triggers two click events
|
|
_filterClick: function (e, handler) {
|
|
var timeStamp = (e.timeStamp || e.originalEvent.timeStamp),
|
|
elapsed = L.DomEvent._lastClick && (timeStamp - L.DomEvent._lastClick);
|
|
|
|
// are they closer together than 500ms yet more than 100ms?
|
|
// Android typically triggers them ~300ms apart while multiple listeners
|
|
// on the same event should be triggered far faster;
|
|
// or check if click is simulated on the element, and if it is, reject any non-simulated events
|
|
|
|
if ((elapsed && elapsed > 100 && elapsed < 500) || (e.target._simulatedClick && !e._simulated)) {
|
|
L.DomEvent.stop(e);
|
|
return;
|
|
}
|
|
L.DomEvent._lastClick = timeStamp;
|
|
|
|
return handler(e);
|
|
}
|
|
};
|
|
|
|
L.DomEvent.addListener = L.DomEvent.on;
|
|
L.DomEvent.removeListener = L.DomEvent.off;
|
|
|
|
|
|
/*
|
|
* L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
|
|
*/
|
|
|
|
L.Draggable = L.Evented.extend({
|
|
|
|
statics: {
|
|
START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'],
|
|
END: {
|
|
mousedown: 'mouseup',
|
|
touchstart: 'touchend',
|
|
pointerdown: 'touchend',
|
|
MSPointerDown: 'touchend'
|
|
},
|
|
MOVE: {
|
|
mousedown: 'mousemove',
|
|
touchstart: 'touchmove',
|
|
pointerdown: 'touchmove',
|
|
MSPointerDown: 'touchmove'
|
|
}
|
|
},
|
|
|
|
initialize: function (element, dragStartTarget) {
|
|
this._element = element;
|
|
this._dragStartTarget = dragStartTarget || element;
|
|
},
|
|
|
|
enable: function () {
|
|
if (this._enabled) { return; }
|
|
|
|
L.DomEvent.on(this._dragStartTarget, L.Draggable.START.join(' '), this._onDown, this);
|
|
|
|
this._enabled = true;
|
|
},
|
|
|
|
disable: function () {
|
|
if (!this._enabled) { return; }
|
|
|
|
L.DomEvent.off(this._dragStartTarget, L.Draggable.START.join(' '), this._onDown, this);
|
|
|
|
this._enabled = false;
|
|
this._moved = false;
|
|
},
|
|
|
|
_onDown: function (e) {
|
|
this._moved = false;
|
|
|
|
if (e.shiftKey || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
|
|
|
|
L.DomEvent.stopPropagation(e);
|
|
|
|
if (L.DomUtil.hasClass(this._element, 'leaflet-zoom-anim')) { return; }
|
|
|
|
L.DomUtil.disableImageDrag();
|
|
L.DomUtil.disableTextSelection();
|
|
|
|
if (this._moving) { return; }
|
|
|
|
this.fire('down');
|
|
|
|
var first = e.touches ? e.touches[0] : e;
|
|
|
|
this._startPoint = new L.Point(first.clientX, first.clientY);
|
|
this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
|
|
|
|
L.DomEvent
|
|
.on(document, L.Draggable.MOVE[e.type], this._onMove, this)
|
|
.on(document, L.Draggable.END[e.type], this._onUp, this);
|
|
},
|
|
|
|
_onMove: function (e) {
|
|
if (e.touches && e.touches.length > 1) {
|
|
this._moved = true;
|
|
return;
|
|
}
|
|
|
|
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
|
|
newPoint = new L.Point(first.clientX, first.clientY),
|
|
offset = newPoint.subtract(this._startPoint);
|
|
|
|
if (!offset.x && !offset.y) { return; }
|
|
if (L.Browser.touch && Math.abs(offset.x) + Math.abs(offset.y) < 3) { return; }
|
|
|
|
L.DomEvent.preventDefault(e);
|
|
|
|
if (!this._moved) {
|
|
this.fire('dragstart');
|
|
|
|
this._moved = true;
|
|
this._startPos = L.DomUtil.getPosition(this._element).subtract(offset);
|
|
|
|
L.DomUtil.addClass(document.body, 'leaflet-dragging');
|
|
|
|
this._lastTarget = e.target || e.srcElement;
|
|
L.DomUtil.addClass(this._lastTarget, 'leaflet-drag-target');
|
|
}
|
|
|
|
this._newPos = this._startPos.add(offset);
|
|
this._moving = true;
|
|
|
|
L.Util.cancelAnimFrame(this._animRequest);
|
|
this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
|
|
},
|
|
|
|
_updatePosition: function () {
|
|
this.fire('predrag');
|
|
L.DomUtil.setPosition(this._element, this._newPos);
|
|
this.fire('drag');
|
|
},
|
|
|
|
_onUp: function () {
|
|
L.DomUtil.removeClass(document.body, 'leaflet-dragging');
|
|
|
|
if (this._lastTarget) {
|
|
L.DomUtil.removeClass(this._lastTarget, 'leaflet-drag-target');
|
|
this._lastTarget = null;
|
|
}
|
|
|
|
for (var i in L.Draggable.MOVE) {
|
|
L.DomEvent
|
|
.off(document, L.Draggable.MOVE[i], this._onMove, this)
|
|
.off(document, L.Draggable.END[i], this._onUp, this);
|
|
}
|
|
|
|
L.DomUtil.enableImageDrag();
|
|
L.DomUtil.enableTextSelection();
|
|
|
|
if (this._moved && this._moving) {
|
|
// ensure drag is not fired after dragend
|
|
L.Util.cancelAnimFrame(this._animRequest);
|
|
|
|
this.fire('dragend', {
|
|
distance: this._newPos.distanceTo(this._startPos)
|
|
});
|
|
}
|
|
|
|
this._moving = false;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
L.Handler is a base class for handler classes that are used internally to inject
|
|
interaction features like dragging to classes like Map and Marker.
|
|
*/
|
|
|
|
L.Handler = L.Class.extend({
|
|
initialize: function (map) {
|
|
this._map = map;
|
|
},
|
|
|
|
enable: function () {
|
|
if (this._enabled) { return; }
|
|
|
|
this._enabled = true;
|
|
this.addHooks();
|
|
},
|
|
|
|
disable: function () {
|
|
if (!this._enabled) { return; }
|
|
|
|
this._enabled = false;
|
|
this.removeHooks();
|
|
},
|
|
|
|
enabled: function () {
|
|
return !!this._enabled;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
dragging: true,
|
|
|
|
inertia: !L.Browser.android23,
|
|
inertiaDeceleration: 3400, // px/s^2
|
|
inertiaMaxSpeed: Infinity, // px/s
|
|
easeLinearity: 0.2,
|
|
|
|
// TODO refactor, move to CRS
|
|
worldCopyJump: false
|
|
});
|
|
|
|
L.Map.Drag = L.Handler.extend({
|
|
addHooks: function () {
|
|
if (!this._draggable) {
|
|
var map = this._map;
|
|
|
|
this._draggable = new L.Draggable(map._mapPane, map._container);
|
|
|
|
this._draggable.on({
|
|
down: this._onDown,
|
|
dragstart: this._onDragStart,
|
|
drag: this._onDrag,
|
|
dragend: this._onDragEnd
|
|
}, this);
|
|
|
|
if (map.options.worldCopyJump) {
|
|
this._draggable.on('predrag', this._onPreDrag, this);
|
|
map.on('viewreset', this._onViewReset, this);
|
|
|
|
map.whenReady(this._onViewReset, this);
|
|
}
|
|
}
|
|
this._draggable.enable();
|
|
},
|
|
|
|
removeHooks: function () {
|
|
this._draggable.disable();
|
|
},
|
|
|
|
moved: function () {
|
|
return this._draggable && this._draggable._moved;
|
|
},
|
|
|
|
_onDown: function () {
|
|
this._map.stop();
|
|
},
|
|
|
|
_onDragStart: function () {
|
|
var map = this._map;
|
|
|
|
map
|
|
.fire('movestart')
|
|
.fire('dragstart');
|
|
|
|
if (map.options.inertia) {
|
|
this._positions = [];
|
|
this._times = [];
|
|
}
|
|
},
|
|
|
|
_onDrag: function () {
|
|
if (this._map.options.inertia) {
|
|
var time = this._lastTime = +new Date(),
|
|
pos = this._lastPos = this._draggable._absPos || this._draggable._newPos;
|
|
|
|
this._positions.push(pos);
|
|
this._times.push(time);
|
|
|
|
if (time - this._times[0] > 50) {
|
|
this._positions.shift();
|
|
this._times.shift();
|
|
}
|
|
}
|
|
|
|
this._map
|
|
.fire('move')
|
|
.fire('drag');
|
|
},
|
|
|
|
_onViewReset: function () {
|
|
var pxCenter = this._map.getSize().divideBy(2),
|
|
pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
|
|
|
|
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
|
|
this._worldWidth = this._map.getPixelWorldBounds().getSize().x;
|
|
},
|
|
|
|
_onPreDrag: function () {
|
|
// TODO refactor to be able to adjust map pane position after zoom
|
|
var worldWidth = this._worldWidth,
|
|
halfWidth = Math.round(worldWidth / 2),
|
|
dx = this._initialWorldOffset,
|
|
x = this._draggable._newPos.x,
|
|
newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
|
|
newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
|
|
newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
|
|
|
|
this._draggable._absPos = this._draggable._newPos.clone();
|
|
this._draggable._newPos.x = newX;
|
|
},
|
|
|
|
_onDragEnd: function (e) {
|
|
var map = this._map,
|
|
options = map.options,
|
|
|
|
noInertia = !options.inertia || this._times.length < 2;
|
|
|
|
map.fire('dragend', e);
|
|
|
|
if (noInertia) {
|
|
map.fire('moveend');
|
|
|
|
} else {
|
|
|
|
var direction = this._lastPos.subtract(this._positions[0]),
|
|
duration = (this._lastTime - this._times[0]) / 1000,
|
|
ease = options.easeLinearity,
|
|
|
|
speedVector = direction.multiplyBy(ease / duration),
|
|
speed = speedVector.distanceTo([0, 0]),
|
|
|
|
limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
|
|
limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
|
|
|
|
decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
|
|
offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
|
|
|
|
if (!offset.x || !offset.y) {
|
|
map.fire('moveend');
|
|
|
|
} else {
|
|
offset = map._limitOffset(offset, map.options.maxBounds);
|
|
|
|
L.Util.requestAnimFrame(function () {
|
|
map.panBy(offset, {
|
|
duration: decelerationDuration,
|
|
easeLinearity: ease,
|
|
noMoveStart: true,
|
|
animate: true
|
|
});
|
|
});
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
|
|
|
|
|
|
/*
|
|
* L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
doubleClickZoom: true
|
|
});
|
|
|
|
L.Map.DoubleClickZoom = L.Handler.extend({
|
|
addHooks: function () {
|
|
this._map.on('dblclick', this._onDoubleClick, this);
|
|
},
|
|
|
|
removeHooks: function () {
|
|
this._map.off('dblclick', this._onDoubleClick, this);
|
|
},
|
|
|
|
_onDoubleClick: function (e) {
|
|
var map = this._map,
|
|
oldZoom = map.getZoom(),
|
|
zoom = e.originalEvent.shiftKey ? Math.ceil(oldZoom) - 1 : Math.floor(oldZoom) + 1;
|
|
|
|
if (map.options.doubleClickZoom === 'center') {
|
|
map.setZoom(zoom);
|
|
} else {
|
|
map.setZoomAround(e.containerPoint, zoom);
|
|
}
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
|
|
|
|
|
|
/*
|
|
* L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
scrollWheelZoom: true,
|
|
wheelDebounceTime: 40
|
|
});
|
|
|
|
L.Map.ScrollWheelZoom = L.Handler.extend({
|
|
addHooks: function () {
|
|
L.DomEvent.on(this._map._container, {
|
|
mousewheel: this._onWheelScroll,
|
|
MozMousePixelScroll: L.DomEvent.preventDefault
|
|
}, this);
|
|
|
|
this._delta = 0;
|
|
},
|
|
|
|
removeHooks: function () {
|
|
L.DomEvent.off(this._map._container, {
|
|
mousewheel: this._onWheelScroll,
|
|
MozMousePixelScroll: L.DomEvent.preventDefault
|
|
}, this);
|
|
},
|
|
|
|
_onWheelScroll: function (e) {
|
|
var delta = L.DomEvent.getWheelDelta(e);
|
|
var debounce = this._map.options.wheelDebounceTime;
|
|
|
|
this._delta += delta;
|
|
this._lastMousePos = this._map.mouseEventToContainerPoint(e);
|
|
|
|
if (!this._startTime) {
|
|
this._startTime = +new Date();
|
|
}
|
|
|
|
var left = Math.max(debounce - (+new Date() - this._startTime), 0);
|
|
|
|
clearTimeout(this._timer);
|
|
this._timer = setTimeout(L.bind(this._performZoom, this), left);
|
|
|
|
L.DomEvent.stop(e);
|
|
},
|
|
|
|
_performZoom: function () {
|
|
var map = this._map,
|
|
delta = this._delta,
|
|
zoom = map.getZoom();
|
|
|
|
map.stop(); // stop panning and fly animations if any
|
|
|
|
delta = delta > 0 ? Math.ceil(delta) : Math.floor(delta);
|
|
delta = Math.max(Math.min(delta, 4), -4);
|
|
delta = map._limitZoom(zoom + delta) - zoom;
|
|
|
|
this._delta = 0;
|
|
this._startTime = null;
|
|
|
|
if (!delta) { return; }
|
|
|
|
if (map.options.scrollWheelZoom === 'center') {
|
|
map.setZoom(zoom + delta);
|
|
} else {
|
|
map.setZoomAround(this._lastMousePos, zoom + delta);
|
|
}
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
|
|
|
|
|
|
/*
|
|
* Extends the event handling code with double tap support for mobile browsers.
|
|
*/
|
|
|
|
L.extend(L.DomEvent, {
|
|
|
|
_touchstart: L.Browser.msPointer ? 'MSPointerDown' : L.Browser.pointer ? 'pointerdown' : 'touchstart',
|
|
_touchend: L.Browser.msPointer ? 'MSPointerUp' : L.Browser.pointer ? 'pointerup' : 'touchend',
|
|
|
|
// inspired by Zepto touch code by Thomas Fuchs
|
|
addDoubleTapListener: function (obj, handler, id) {
|
|
var last, touch,
|
|
doubleTap = false,
|
|
delay = 250;
|
|
|
|
function onTouchStart(e) {
|
|
var count;
|
|
|
|
if (L.Browser.pointer) {
|
|
count = L.DomEvent._pointersCount;
|
|
} else {
|
|
count = e.touches.length;
|
|
}
|
|
|
|
if (count > 1) { return; }
|
|
|
|
var now = Date.now(),
|
|
delta = now - (last || now);
|
|
|
|
touch = e.touches ? e.touches[0] : e;
|
|
doubleTap = (delta > 0 && delta <= delay);
|
|
last = now;
|
|
}
|
|
|
|
function onTouchEnd() {
|
|
if (doubleTap) {
|
|
if (L.Browser.pointer) {
|
|
// work around .type being readonly with MSPointer* events
|
|
var newTouch = {},
|
|
prop, i;
|
|
|
|
for (i in touch) {
|
|
prop = touch[i];
|
|
newTouch[i] = prop && prop.bind ? prop.bind(touch) : prop;
|
|
}
|
|
touch = newTouch;
|
|
}
|
|
touch.type = 'dblclick';
|
|
handler(touch);
|
|
last = null;
|
|
}
|
|
}
|
|
|
|
var pre = '_leaflet_',
|
|
touchstart = this._touchstart,
|
|
touchend = this._touchend;
|
|
|
|
obj[pre + touchstart + id] = onTouchStart;
|
|
obj[pre + touchend + id] = onTouchEnd;
|
|
|
|
obj.addEventListener(touchstart, onTouchStart, false);
|
|
obj.addEventListener(touchend, onTouchEnd, false);
|
|
return this;
|
|
},
|
|
|
|
removeDoubleTapListener: function (obj, id) {
|
|
var pre = '_leaflet_',
|
|
touchend = obj[pre + this._touchend + id];
|
|
|
|
obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
|
|
obj.removeEventListener(this._touchend, touchend, false);
|
|
|
|
return this;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
|
|
*/
|
|
|
|
L.extend(L.DomEvent, {
|
|
|
|
POINTER_DOWN: L.Browser.msPointer ? 'MSPointerDown' : 'pointerdown',
|
|
POINTER_MOVE: L.Browser.msPointer ? 'MSPointerMove' : 'pointermove',
|
|
POINTER_UP: L.Browser.msPointer ? 'MSPointerUp' : 'pointerup',
|
|
POINTER_CANCEL: L.Browser.msPointer ? 'MSPointerCancel' : 'pointercancel',
|
|
|
|
_pointers: {},
|
|
_pointersCount: 0,
|
|
|
|
// Provides a touch events wrapper for (ms)pointer events.
|
|
// ref http://www.w3.org/TR/pointerevents/ https://www.w3.org/Bugs/Public/show_bug.cgi?id=22890
|
|
|
|
addPointerListener: function (obj, type, handler, id) {
|
|
|
|
if (type === 'touchstart') {
|
|
this._addPointerStart(obj, handler, id);
|
|
|
|
} else if (type === 'touchmove') {
|
|
this._addPointerMove(obj, handler, id);
|
|
|
|
} else if (type === 'touchend') {
|
|
this._addPointerEnd(obj, handler, id);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
removePointerListener: function (obj, type, id) {
|
|
var handler = obj['_leaflet_' + type + id];
|
|
|
|
if (type === 'touchstart') {
|
|
obj.removeEventListener(this.POINTER_DOWN, handler, false);
|
|
|
|
} else if (type === 'touchmove') {
|
|
obj.removeEventListener(this.POINTER_MOVE, handler, false);
|
|
|
|
} else if (type === 'touchend') {
|
|
obj.removeEventListener(this.POINTER_UP, handler, false);
|
|
obj.removeEventListener(this.POINTER_CANCEL, handler, false);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_addPointerStart: function (obj, handler, id) {
|
|
var onDown = L.bind(function (e) {
|
|
L.DomEvent.preventDefault(e);
|
|
|
|
this._handlePointer(e, handler);
|
|
}, this);
|
|
|
|
obj['_leaflet_touchstart' + id] = onDown;
|
|
obj.addEventListener(this.POINTER_DOWN, onDown, false);
|
|
|
|
// need to keep track of what pointers and how many are active to provide e.touches emulation
|
|
if (!this._pointerDocListener) {
|
|
var pointerUp = L.bind(this._globalPointerUp, this);
|
|
|
|
// we listen documentElement as any drags that end by moving the touch off the screen get fired there
|
|
document.documentElement.addEventListener(this.POINTER_DOWN, L.bind(this._globalPointerDown, this), true);
|
|
document.documentElement.addEventListener(this.POINTER_MOVE, L.bind(this._globalPointerMove, this), true);
|
|
document.documentElement.addEventListener(this.POINTER_UP, pointerUp, true);
|
|
document.documentElement.addEventListener(this.POINTER_CANCEL, pointerUp, true);
|
|
|
|
this._pointerDocListener = true;
|
|
}
|
|
},
|
|
|
|
_globalPointerDown: function (e) {
|
|
this._pointers[e.pointerId] = e;
|
|
this._pointersCount++;
|
|
},
|
|
|
|
_globalPointerMove: function (e) {
|
|
if (this._pointers[e.pointerId]) {
|
|
this._pointers[e.pointerId] = e;
|
|
}
|
|
},
|
|
|
|
_globalPointerUp: function (e) {
|
|
delete this._pointers[e.pointerId];
|
|
this._pointersCount--;
|
|
},
|
|
|
|
_handlePointer: function (e, handler) {
|
|
e.touches = [];
|
|
for (var i in this._pointers) {
|
|
e.touches.push(this._pointers[i]);
|
|
}
|
|
e.changedTouches = [e];
|
|
|
|
handler(e);
|
|
},
|
|
|
|
_addPointerMove: function (obj, handler, id) {
|
|
var onMove = L.bind(function (e) {
|
|
// don't fire touch moves when mouse isn't down
|
|
if ((e.pointerType === e.MSPOINTER_TYPE_MOUSE || e.pointerType === 'mouse') && e.buttons === 0) { return; }
|
|
|
|
this._handlePointer(e, handler);
|
|
}, this);
|
|
|
|
obj['_leaflet_touchmove' + id] = onMove;
|
|
obj.addEventListener(this.POINTER_MOVE, onMove, false);
|
|
},
|
|
|
|
_addPointerEnd: function (obj, handler, id) {
|
|
var onUp = L.bind(function (e) {
|
|
this._handlePointer(e, handler);
|
|
}, this);
|
|
|
|
obj['_leaflet_touchend' + id] = onUp;
|
|
obj.addEventListener(this.POINTER_UP, onUp, false);
|
|
obj.addEventListener(this.POINTER_CANCEL, onUp, false);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
touchZoom: L.Browser.touch && !L.Browser.android23,
|
|
bounceAtZoomLimits: true
|
|
});
|
|
|
|
L.Map.TouchZoom = L.Handler.extend({
|
|
addHooks: function () {
|
|
L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
|
|
},
|
|
|
|
removeHooks: function () {
|
|
L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
|
|
},
|
|
|
|
_onTouchStart: function (e) {
|
|
var map = this._map;
|
|
|
|
if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
|
|
|
|
var p1 = map.mouseEventToLayerPoint(e.touches[0]),
|
|
p2 = map.mouseEventToLayerPoint(e.touches[1]),
|
|
viewCenter = map._getCenterLayerPoint();
|
|
|
|
this._startCenter = p1.add(p2)._divideBy(2);
|
|
this._startDist = p1.distanceTo(p2);
|
|
|
|
this._moved = false;
|
|
this._zooming = true;
|
|
|
|
this._centerOffset = viewCenter.subtract(this._startCenter);
|
|
|
|
map.stop();
|
|
|
|
L.DomEvent
|
|
.on(document, 'touchmove', this._onTouchMove, this)
|
|
.on(document, 'touchend', this._onTouchEnd, this);
|
|
|
|
L.DomEvent.preventDefault(e);
|
|
},
|
|
|
|
_onTouchMove: function (e) {
|
|
if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
|
|
|
|
var map = this._map,
|
|
p1 = map.mouseEventToLayerPoint(e.touches[0]),
|
|
p2 = map.mouseEventToLayerPoint(e.touches[1]);
|
|
|
|
this._scale = p1.distanceTo(p2) / this._startDist;
|
|
this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
|
|
|
|
if (!map.options.bounceAtZoomLimits) {
|
|
var currentZoom = map.getScaleZoom(this._scale);
|
|
if ((currentZoom <= map.getMinZoom() && this._scale < 1) ||
|
|
(currentZoom >= map.getMaxZoom() && this._scale > 1)) { return; }
|
|
}
|
|
|
|
if (!this._moved) {
|
|
map
|
|
.fire('movestart')
|
|
.fire('zoomstart');
|
|
|
|
this._moved = true;
|
|
}
|
|
|
|
L.Util.cancelAnimFrame(this._animRequest);
|
|
this._animRequest = L.Util.requestAnimFrame(this._updateOnMove, this, true, this._map._container);
|
|
|
|
L.DomEvent.preventDefault(e);
|
|
},
|
|
|
|
_updateOnMove: function () {
|
|
var map = this._map;
|
|
|
|
if (map.options.touchZoom === 'center') {
|
|
this._center = map.getCenter();
|
|
} else {
|
|
this._center = map.layerPointToLatLng(this._getTargetCenter());
|
|
}
|
|
this._zoom = map.getScaleZoom(this._scale);
|
|
|
|
map._animateZoom(this._center, this._zoom);
|
|
},
|
|
|
|
_onTouchEnd: function () {
|
|
if (!this._moved || !this._zooming) {
|
|
this._zooming = false;
|
|
return;
|
|
}
|
|
|
|
this._zooming = false;
|
|
L.Util.cancelAnimFrame(this._animRequest);
|
|
|
|
L.DomEvent
|
|
.off(document, 'touchmove', this._onTouchMove)
|
|
.off(document, 'touchend', this._onTouchEnd);
|
|
|
|
var map = this._map,
|
|
oldZoom = map.getZoom(),
|
|
zoomDelta = this._zoom - oldZoom,
|
|
finalZoom = map._limitZoom(zoomDelta > 0 ? Math.ceil(this._zoom) : Math.floor(this._zoom));
|
|
|
|
map._animateZoom(this._center, finalZoom, true);
|
|
},
|
|
|
|
_getTargetCenter: function () {
|
|
var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
|
|
return this._startCenter.add(centerOffset);
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
|
|
|
|
|
|
/*
|
|
* L.Map.Tap is used to enable mobile hacks like quick taps and long hold.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
tap: true,
|
|
tapTolerance: 15
|
|
});
|
|
|
|
L.Map.Tap = L.Handler.extend({
|
|
addHooks: function () {
|
|
L.DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
|
|
},
|
|
|
|
removeHooks: function () {
|
|
L.DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
|
|
},
|
|
|
|
_onDown: function (e) {
|
|
if (!e.touches) { return; }
|
|
|
|
L.DomEvent.preventDefault(e);
|
|
|
|
this._fireClick = true;
|
|
|
|
// don't simulate click or track longpress if more than 1 touch
|
|
if (e.touches.length > 1) {
|
|
this._fireClick = false;
|
|
clearTimeout(this._holdTimeout);
|
|
return;
|
|
}
|
|
|
|
var first = e.touches[0],
|
|
el = first.target;
|
|
|
|
this._startPos = this._newPos = new L.Point(first.clientX, first.clientY);
|
|
|
|
// if touching a link, highlight it
|
|
if (el.tagName && el.tagName.toLowerCase() === 'a') {
|
|
L.DomUtil.addClass(el, 'leaflet-active');
|
|
}
|
|
|
|
// simulate long hold but setting a timeout
|
|
this._holdTimeout = setTimeout(L.bind(function () {
|
|
if (this._isTapValid()) {
|
|
this._fireClick = false;
|
|
this._onUp();
|
|
this._simulateEvent('contextmenu', first);
|
|
}
|
|
}, this), 1000);
|
|
|
|
this._simulateEvent('mousedown', first);
|
|
|
|
L.DomEvent.on(document, {
|
|
touchmove: this._onMove,
|
|
touchend: this._onUp
|
|
}, this);
|
|
},
|
|
|
|
_onUp: function (e) {
|
|
clearTimeout(this._holdTimeout);
|
|
|
|
L.DomEvent.off(document, {
|
|
touchmove: this._onMove,
|
|
touchend: this._onUp
|
|
}, this);
|
|
|
|
if (this._fireClick && e && e.changedTouches) {
|
|
|
|
var first = e.changedTouches[0],
|
|
el = first.target;
|
|
|
|
if (el && el.tagName && el.tagName.toLowerCase() === 'a') {
|
|
L.DomUtil.removeClass(el, 'leaflet-active');
|
|
}
|
|
|
|
this._simulateEvent('mouseup', first);
|
|
|
|
// simulate click if the touch didn't move too much
|
|
if (this._isTapValid()) {
|
|
this._simulateEvent('click', first);
|
|
}
|
|
}
|
|
},
|
|
|
|
_isTapValid: function () {
|
|
return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
|
|
},
|
|
|
|
_onMove: function (e) {
|
|
var first = e.touches[0];
|
|
this._newPos = new L.Point(first.clientX, first.clientY);
|
|
},
|
|
|
|
_simulateEvent: function (type, e) {
|
|
var simulatedEvent = document.createEvent('MouseEvents');
|
|
|
|
simulatedEvent._simulated = true;
|
|
e.target._simulatedClick = true;
|
|
|
|
simulatedEvent.initMouseEvent(
|
|
type, true, true, window, 1,
|
|
e.screenX, e.screenY,
|
|
e.clientX, e.clientY,
|
|
false, false, false, false, 0, null);
|
|
|
|
e.target.dispatchEvent(simulatedEvent);
|
|
}
|
|
});
|
|
|
|
if (L.Browser.touch && !L.Browser.pointer) {
|
|
L.Map.addInitHook('addHandler', 'tap', L.Map.Tap);
|
|
}
|
|
|
|
|
|
/*
|
|
* L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
|
|
* (zoom to a selected bounding box), enabled by default.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
boxZoom: true
|
|
});
|
|
|
|
L.Map.BoxZoom = L.Handler.extend({
|
|
initialize: function (map) {
|
|
this._map = map;
|
|
this._container = map._container;
|
|
this._pane = map._panes.overlayPane;
|
|
},
|
|
|
|
addHooks: function () {
|
|
L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
|
|
},
|
|
|
|
removeHooks: function () {
|
|
L.DomEvent.off(this._container, 'mousedown', this._onMouseDown, this);
|
|
},
|
|
|
|
moved: function () {
|
|
return this._moved;
|
|
},
|
|
|
|
_onMouseDown: function (e) {
|
|
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
|
|
|
|
this._moved = false;
|
|
|
|
L.DomUtil.disableTextSelection();
|
|
L.DomUtil.disableImageDrag();
|
|
|
|
this._startPoint = this._map.mouseEventToContainerPoint(e);
|
|
|
|
L.DomEvent.on(document, {
|
|
contextmenu: L.DomEvent.stop,
|
|
mousemove: this._onMouseMove,
|
|
mouseup: this._onMouseUp,
|
|
keydown: this._onKeyDown
|
|
}, this);
|
|
},
|
|
|
|
_onMouseMove: function (e) {
|
|
if (!this._moved) {
|
|
this._moved = true;
|
|
|
|
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._container);
|
|
L.DomUtil.addClass(this._container, 'leaflet-crosshair');
|
|
|
|
this._map.fire('boxzoomstart');
|
|
}
|
|
|
|
this._point = this._map.mouseEventToContainerPoint(e);
|
|
|
|
var bounds = new L.Bounds(this._point, this._startPoint),
|
|
size = bounds.getSize();
|
|
|
|
L.DomUtil.setPosition(this._box, bounds.min);
|
|
|
|
this._box.style.width = size.x + 'px';
|
|
this._box.style.height = size.y + 'px';
|
|
},
|
|
|
|
_finish: function () {
|
|
if (this._moved) {
|
|
L.DomUtil.remove(this._box);
|
|
L.DomUtil.removeClass(this._container, 'leaflet-crosshair');
|
|
}
|
|
|
|
L.DomUtil.enableTextSelection();
|
|
L.DomUtil.enableImageDrag();
|
|
|
|
L.DomEvent.off(document, {
|
|
contextmenu: L.DomEvent.stop,
|
|
mousemove: this._onMouseMove,
|
|
mouseup: this._onMouseUp,
|
|
keydown: this._onKeyDown
|
|
}, this);
|
|
},
|
|
|
|
_onMouseUp: function (e) {
|
|
if ((e.which !== 1) && (e.button !== 1)) { return false; }
|
|
|
|
this._finish();
|
|
|
|
if (!this._moved) { return; }
|
|
|
|
var bounds = new L.LatLngBounds(
|
|
this._map.containerPointToLatLng(this._startPoint),
|
|
this._map.containerPointToLatLng(this._point));
|
|
|
|
this._map
|
|
.fitBounds(bounds)
|
|
.fire('boxzoomend', {boxZoomBounds: bounds});
|
|
},
|
|
|
|
_onKeyDown: function (e) {
|
|
if (e.keyCode === 27) {
|
|
this._finish();
|
|
}
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
|
|
|
|
|
|
/*
|
|
* L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
keyboard: true,
|
|
keyboardPanOffset: 80,
|
|
keyboardZoomOffset: 1
|
|
});
|
|
|
|
L.Map.Keyboard = L.Handler.extend({
|
|
|
|
keyCodes: {
|
|
left: [37],
|
|
right: [39],
|
|
down: [40],
|
|
up: [38],
|
|
zoomIn: [187, 107, 61, 171],
|
|
zoomOut: [189, 109, 173]
|
|
},
|
|
|
|
initialize: function (map) {
|
|
this._map = map;
|
|
|
|
this._setPanOffset(map.options.keyboardPanOffset);
|
|
this._setZoomOffset(map.options.keyboardZoomOffset);
|
|
},
|
|
|
|
addHooks: function () {
|
|
var container = this._map._container;
|
|
|
|
// make the container focusable by tabbing
|
|
if (container.tabIndex === -1) {
|
|
container.tabIndex = '0';
|
|
}
|
|
|
|
L.DomEvent.on(container, {
|
|
focus: this._onFocus,
|
|
blur: this._onBlur,
|
|
mousedown: this._onMouseDown
|
|
}, this);
|
|
|
|
this._map.on({
|
|
focus: this._addHooks,
|
|
blur: this._removeHooks
|
|
}, this);
|
|
},
|
|
|
|
removeHooks: function () {
|
|
this._removeHooks();
|
|
|
|
L.DomEvent.off(this._map._container, {
|
|
focus: this._onFocus,
|
|
blur: this._onBlur,
|
|
mousedown: this._onMouseDown
|
|
}, this);
|
|
|
|
this._map.off({
|
|
focus: this._addHooks,
|
|
blur: this._removeHooks
|
|
}, this);
|
|
},
|
|
|
|
_onMouseDown: function () {
|
|
if (this._focused) { return; }
|
|
|
|
var body = document.body,
|
|
docEl = document.documentElement,
|
|
top = body.scrollTop || docEl.scrollTop,
|
|
left = body.scrollLeft || docEl.scrollLeft;
|
|
|
|
this._map._container.focus();
|
|
|
|
window.scrollTo(left, top);
|
|
},
|
|
|
|
_onFocus: function () {
|
|
this._focused = true;
|
|
this._map.fire('focus');
|
|
},
|
|
|
|
_onBlur: function () {
|
|
this._focused = false;
|
|
this._map.fire('blur');
|
|
},
|
|
|
|
_setPanOffset: function (pan) {
|
|
var keys = this._panKeys = {},
|
|
codes = this.keyCodes,
|
|
i, len;
|
|
|
|
for (i = 0, len = codes.left.length; i < len; i++) {
|
|
keys[codes.left[i]] = [-1 * pan, 0];
|
|
}
|
|
for (i = 0, len = codes.right.length; i < len; i++) {
|
|
keys[codes.right[i]] = [pan, 0];
|
|
}
|
|
for (i = 0, len = codes.down.length; i < len; i++) {
|
|
keys[codes.down[i]] = [0, pan];
|
|
}
|
|
for (i = 0, len = codes.up.length; i < len; i++) {
|
|
keys[codes.up[i]] = [0, -1 * pan];
|
|
}
|
|
},
|
|
|
|
_setZoomOffset: function (zoom) {
|
|
var keys = this._zoomKeys = {},
|
|
codes = this.keyCodes,
|
|
i, len;
|
|
|
|
for (i = 0, len = codes.zoomIn.length; i < len; i++) {
|
|
keys[codes.zoomIn[i]] = zoom;
|
|
}
|
|
for (i = 0, len = codes.zoomOut.length; i < len; i++) {
|
|
keys[codes.zoomOut[i]] = -zoom;
|
|
}
|
|
},
|
|
|
|
_addHooks: function () {
|
|
L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
|
|
},
|
|
|
|
_removeHooks: function () {
|
|
L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
|
|
},
|
|
|
|
_onKeyDown: function (e) {
|
|
if (e.altKey || e.ctrlKey || e.metaKey) { return; }
|
|
|
|
var key = e.keyCode,
|
|
map = this._map;
|
|
|
|
if (key in this._panKeys) {
|
|
|
|
if (map._panAnim && map._panAnim._inProgress) { return; }
|
|
|
|
map.panBy(this._panKeys[key]);
|
|
|
|
if (map.options.maxBounds) {
|
|
map.panInsideBounds(map.options.maxBounds);
|
|
}
|
|
|
|
} else if (key in this._zoomKeys) {
|
|
map.setZoom(map.getZoom() + (e.shiftKey ? 3 : 1) * this._zoomKeys[key]);
|
|
|
|
} else if (key === 27) {
|
|
map.closePopup();
|
|
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
L.DomEvent.stop(e);
|
|
}
|
|
});
|
|
|
|
L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
|
|
|
|
|
|
/*
|
|
* L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
|
|
*/
|
|
|
|
L.Handler.MarkerDrag = L.Handler.extend({
|
|
initialize: function (marker) {
|
|
this._marker = marker;
|
|
},
|
|
|
|
addHooks: function () {
|
|
var icon = this._marker._icon;
|
|
|
|
if (!this._draggable) {
|
|
this._draggable = new L.Draggable(icon, icon);
|
|
}
|
|
|
|
this._draggable.on({
|
|
dragstart: this._onDragStart,
|
|
drag: this._onDrag,
|
|
dragend: this._onDragEnd
|
|
}, this).enable();
|
|
|
|
L.DomUtil.addClass(icon, 'leaflet-marker-draggable');
|
|
},
|
|
|
|
removeHooks: function () {
|
|
this._draggable.off({
|
|
dragstart: this._onDragStart,
|
|
drag: this._onDrag,
|
|
dragend: this._onDragEnd
|
|
}, this).disable();
|
|
|
|
L.DomUtil.removeClass(this._marker._icon, 'leaflet-marker-draggable');
|
|
},
|
|
|
|
moved: function () {
|
|
return this._draggable && this._draggable._moved;
|
|
},
|
|
|
|
_onDragStart: function () {
|
|
this._marker
|
|
.closePopup()
|
|
.fire('movestart')
|
|
.fire('dragstart');
|
|
},
|
|
|
|
_onDrag: function () {
|
|
var marker = this._marker,
|
|
shadow = marker._shadow,
|
|
iconPos = L.DomUtil.getPosition(marker._icon),
|
|
latlng = marker._map.layerPointToLatLng(iconPos);
|
|
|
|
// update shadow position
|
|
if (shadow) {
|
|
L.DomUtil.setPosition(shadow, iconPos);
|
|
}
|
|
|
|
marker._latlng = latlng;
|
|
|
|
marker
|
|
.fire('move', {latlng: latlng})
|
|
.fire('drag');
|
|
},
|
|
|
|
_onDragEnd: function (e) {
|
|
this._marker
|
|
.fire('moveend')
|
|
.fire('dragend', e);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Control is a base class for implementing map controls. Handles positioning.
|
|
* All other controls extend from this class.
|
|
*/
|
|
|
|
L.Control = L.Class.extend({
|
|
options: {
|
|
position: 'topright'
|
|
},
|
|
|
|
initialize: function (options) {
|
|
L.setOptions(this, options);
|
|
},
|
|
|
|
getPosition: function () {
|
|
return this.options.position;
|
|
},
|
|
|
|
setPosition: function (position) {
|
|
var map = this._map;
|
|
|
|
if (map) {
|
|
map.removeControl(this);
|
|
}
|
|
|
|
this.options.position = position;
|
|
|
|
if (map) {
|
|
map.addControl(this);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
getContainer: function () {
|
|
return this._container;
|
|
},
|
|
|
|
addTo: function (map) {
|
|
this.remove();
|
|
this._map = map;
|
|
|
|
var container = this._container = this.onAdd(map),
|
|
pos = this.getPosition(),
|
|
corner = map._controlCorners[pos];
|
|
|
|
L.DomUtil.addClass(container, 'leaflet-control');
|
|
|
|
if (pos.indexOf('bottom') !== -1) {
|
|
corner.insertBefore(container, corner.firstChild);
|
|
} else {
|
|
corner.appendChild(container);
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
remove: function () {
|
|
if (!this._map) {
|
|
return this;
|
|
}
|
|
|
|
L.DomUtil.remove(this._container);
|
|
|
|
if (this.onRemove) {
|
|
this.onRemove(this._map);
|
|
}
|
|
|
|
this._map = null;
|
|
|
|
return this;
|
|
},
|
|
|
|
_refocusOnMap: function () {
|
|
if (this._map) {
|
|
this._map.getContainer().focus();
|
|
}
|
|
}
|
|
});
|
|
|
|
L.control = function (options) {
|
|
return new L.Control(options);
|
|
};
|
|
|
|
|
|
// adds control-related methods to L.Map
|
|
|
|
L.Map.include({
|
|
addControl: function (control) {
|
|
control.addTo(this);
|
|
return this;
|
|
},
|
|
|
|
removeControl: function (control) {
|
|
control.remove();
|
|
return this;
|
|
},
|
|
|
|
_initControlPos: function () {
|
|
var corners = this._controlCorners = {},
|
|
l = 'leaflet-',
|
|
container = this._controlContainer =
|
|
L.DomUtil.create('div', l + 'control-container', this._container);
|
|
|
|
function createCorner(vSide, hSide) {
|
|
var className = l + vSide + ' ' + l + hSide;
|
|
|
|
corners[vSide + hSide] = L.DomUtil.create('div', className, container);
|
|
}
|
|
|
|
createCorner('top', 'left');
|
|
createCorner('top', 'right');
|
|
createCorner('bottom', 'left');
|
|
createCorner('bottom', 'right');
|
|
},
|
|
|
|
_clearControlPos: function () {
|
|
L.DomUtil.remove(this._controlContainer);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* L.Control.Zoom is used for the default zoom buttons on the map.
|
|
*/
|
|
|
|
L.Control.Zoom = L.Control.extend({
|
|
options: {
|
|
position: 'topleft',
|
|
zoomInText: '+',
|
|
zoomInTitle: 'Zoom in',
|
|
zoomOutText: '-',
|
|
zoomOutTitle: 'Zoom out'
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
var zoomName = 'leaflet-control-zoom',
|
|
container = L.DomUtil.create('div', zoomName + ' leaflet-bar'),
|
|
options = this.options;
|
|
|
|
this._zoomInButton = this._createButton(options.zoomInText, options.zoomInTitle,
|
|
zoomName + '-in', container, this._zoomIn);
|
|
this._zoomOutButton = this._createButton(options.zoomOutText, options.zoomOutTitle,
|
|
zoomName + '-out', container, this._zoomOut);
|
|
|
|
this._updateDisabled();
|
|
map.on('zoomend zoomlevelschange', this._updateDisabled, this);
|
|
|
|
return container;
|
|
},
|
|
|
|
onRemove: function (map) {
|
|
map.off('zoomend zoomlevelschange', this._updateDisabled, this);
|
|
},
|
|
|
|
_zoomIn: function (e) {
|
|
this._map.zoomIn(e.shiftKey ? 3 : 1);
|
|
},
|
|
|
|
_zoomOut: function (e) {
|
|
this._map.zoomOut(e.shiftKey ? 3 : 1);
|
|
},
|
|
|
|
_createButton: function (html, title, className, container, fn) {
|
|
var link = L.DomUtil.create('a', className, container);
|
|
link.innerHTML = html;
|
|
link.href = '#';
|
|
link.title = title;
|
|
|
|
L.DomEvent
|
|
.on(link, 'mousedown dblclick', L.DomEvent.stopPropagation)
|
|
.on(link, 'click', L.DomEvent.stop)
|
|
.on(link, 'click', fn, this)
|
|
.on(link, 'click', this._refocusOnMap, this);
|
|
|
|
return link;
|
|
},
|
|
|
|
_updateDisabled: function () {
|
|
var map = this._map,
|
|
className = 'leaflet-disabled';
|
|
|
|
L.DomUtil.removeClass(this._zoomInButton, className);
|
|
L.DomUtil.removeClass(this._zoomOutButton, className);
|
|
|
|
if (map._zoom === map.getMinZoom()) {
|
|
L.DomUtil.addClass(this._zoomOutButton, className);
|
|
}
|
|
if (map._zoom === map.getMaxZoom()) {
|
|
L.DomUtil.addClass(this._zoomInButton, className);
|
|
}
|
|
}
|
|
});
|
|
|
|
L.Map.mergeOptions({
|
|
zoomControl: true
|
|
});
|
|
|
|
L.Map.addInitHook(function () {
|
|
if (this.options.zoomControl) {
|
|
this.zoomControl = new L.Control.Zoom();
|
|
this.addControl(this.zoomControl);
|
|
}
|
|
});
|
|
|
|
L.control.zoom = function (options) {
|
|
return new L.Control.Zoom(options);
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
* L.Control.Attribution is used for displaying attribution on the map (added by default).
|
|
*/
|
|
|
|
L.Control.Attribution = L.Control.extend({
|
|
options: {
|
|
position: 'bottomright',
|
|
prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">Leaflet</a>'
|
|
},
|
|
|
|
initialize: function (options) {
|
|
L.setOptions(this, options);
|
|
|
|
this._attributions = {};
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
|
|
if (L.DomEvent) {
|
|
L.DomEvent.disableClickPropagation(this._container);
|
|
}
|
|
|
|
// TODO ugly, refactor
|
|
for (var i in map._layers) {
|
|
if (map._layers[i].getAttribution) {
|
|
this.addAttribution(map._layers[i].getAttribution());
|
|
}
|
|
}
|
|
|
|
this._update();
|
|
|
|
return this._container;
|
|
},
|
|
|
|
setPrefix: function (prefix) {
|
|
this.options.prefix = prefix;
|
|
this._update();
|
|
return this;
|
|
},
|
|
|
|
addAttribution: function (text) {
|
|
if (!text) { return; }
|
|
|
|
if (!this._attributions[text]) {
|
|
this._attributions[text] = 0;
|
|
}
|
|
this._attributions[text]++;
|
|
|
|
this._update();
|
|
|
|
return this;
|
|
},
|
|
|
|
removeAttribution: function (text) {
|
|
if (!text) { return; }
|
|
|
|
if (this._attributions[text]) {
|
|
this._attributions[text]--;
|
|
this._update();
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_update: function () {
|
|
if (!this._map) { return; }
|
|
|
|
var attribs = [];
|
|
|
|
for (var i in this._attributions) {
|
|
if (this._attributions[i]) {
|
|
attribs.push(i);
|
|
}
|
|
}
|
|
|
|
var prefixAndAttribs = [];
|
|
|
|
if (this.options.prefix) {
|
|
prefixAndAttribs.push(this.options.prefix);
|
|
}
|
|
if (attribs.length) {
|
|
prefixAndAttribs.push(attribs.join(', '));
|
|
}
|
|
|
|
this._container.innerHTML = prefixAndAttribs.join(' | ');
|
|
}
|
|
});
|
|
|
|
L.Map.mergeOptions({
|
|
attributionControl: true
|
|
});
|
|
|
|
L.Map.addInitHook(function () {
|
|
if (this.options.attributionControl) {
|
|
this.attributionControl = (new L.Control.Attribution()).addTo(this);
|
|
}
|
|
});
|
|
|
|
L.control.attribution = function (options) {
|
|
return new L.Control.Attribution(options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Control.Scale is used for displaying metric/imperial scale on the map.
|
|
*/
|
|
|
|
L.Control.Scale = L.Control.extend({
|
|
options: {
|
|
position: 'bottomleft',
|
|
maxWidth: 100,
|
|
metric: true,
|
|
imperial: true
|
|
// updateWhenIdle: false
|
|
},
|
|
|
|
onAdd: function (map) {
|
|
var className = 'leaflet-control-scale',
|
|
container = L.DomUtil.create('div', className),
|
|
options = this.options;
|
|
|
|
this._addScales(options, className + '-line', container);
|
|
|
|
map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
|
|
map.whenReady(this._update, this);
|
|
|
|
return container;
|
|
},
|
|
|
|
onRemove: function (map) {
|
|
map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
|
|
},
|
|
|
|
_addScales: function (options, className, container) {
|
|
if (options.metric) {
|
|
this._mScale = L.DomUtil.create('div', className, container);
|
|
}
|
|
if (options.imperial) {
|
|
this._iScale = L.DomUtil.create('div', className, container);
|
|
}
|
|
},
|
|
|
|
_update: function () {
|
|
var map = this._map,
|
|
y = map.getSize().y / 2;
|
|
|
|
var maxMeters = L.CRS.Earth.distance(
|
|
map.containerPointToLatLng([0, y]),
|
|
map.containerPointToLatLng([this.options.maxWidth, y]));
|
|
|
|
this._updateScales(maxMeters);
|
|
},
|
|
|
|
_updateScales: function (maxMeters) {
|
|
if (this.options.metric && maxMeters) {
|
|
this._updateMetric(maxMeters);
|
|
}
|
|
if (this.options.imperial && maxMeters) {
|
|
this._updateImperial(maxMeters);
|
|
}
|
|
},
|
|
|
|
_updateMetric: function (maxMeters) {
|
|
var meters = this._getRoundNum(maxMeters),
|
|
label = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
|
|
|
|
this._updateScale(this._mScale, label, meters / maxMeters);
|
|
},
|
|
|
|
_updateImperial: function (maxMeters) {
|
|
var maxFeet = maxMeters * 3.2808399,
|
|
maxMiles, miles, feet;
|
|
|
|
if (maxFeet > 5280) {
|
|
maxMiles = maxFeet / 5280;
|
|
miles = this._getRoundNum(maxMiles);
|
|
this._updateScale(this._iScale, miles + ' mi', miles / maxMiles);
|
|
|
|
} else {
|
|
feet = this._getRoundNum(maxFeet);
|
|
this._updateScale(this._iScale, feet + ' ft', feet / maxFeet);
|
|
}
|
|
},
|
|
|
|
_updateScale: function (scale, text, ratio) {
|
|
scale.style.width = Math.round(this.options.maxWidth * ratio) + 'px';
|
|
scale.innerHTML = text;
|
|
},
|
|
|
|
_getRoundNum: function (num) {
|
|
var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
|
|
d = num / pow10;
|
|
|
|
d = d >= 10 ? 10 :
|
|
d >= 5 ? 5 :
|
|
d >= 3 ? 3 :
|
|
d >= 2 ? 2 : 1;
|
|
|
|
return pow10 * d;
|
|
}
|
|
});
|
|
|
|
L.control.scale = function (options) {
|
|
return new L.Control.Scale(options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.Control.Layers is a control to allow users to switch between different layers on the map.
|
|
*/
|
|
|
|
L.Control.Layers = L.Control.extend({
|
|
options: {
|
|
collapsed: true,
|
|
position: 'topright',
|
|
autoZIndex: true,
|
|
hideSingleBase: false
|
|
},
|
|
|
|
initialize: function (baseLayers, overlays, options) {
|
|
L.setOptions(this, options);
|
|
|
|
this._layers = {};
|
|
this._lastZIndex = 0;
|
|
this._handlingClick = false;
|
|
|
|
for (var i in baseLayers) {
|
|
this._addLayer(baseLayers[i], i);
|
|
}
|
|
|
|
for (i in overlays) {
|
|
this._addLayer(overlays[i], i, true);
|
|
}
|
|
},
|
|
|
|
onAdd: function () {
|
|
this._initLayout();
|
|
this._update();
|
|
|
|
return this._container;
|
|
},
|
|
|
|
addBaseLayer: function (layer, name) {
|
|
this._addLayer(layer, name);
|
|
return this._update();
|
|
},
|
|
|
|
addOverlay: function (layer, name) {
|
|
this._addLayer(layer, name, true);
|
|
return this._update();
|
|
},
|
|
|
|
removeLayer: function (layer) {
|
|
layer.off('add remove', this._onLayerChange, this);
|
|
|
|
delete this._layers[L.stamp(layer)];
|
|
return this._update();
|
|
},
|
|
|
|
_initLayout: function () {
|
|
var className = 'leaflet-control-layers',
|
|
container = this._container = L.DomUtil.create('div', className);
|
|
|
|
// makes this work on IE touch devices by stopping it from firing a mouseout event when the touch is released
|
|
container.setAttribute('aria-haspopup', true);
|
|
|
|
if (!L.Browser.touch) {
|
|
L.DomEvent
|
|
.disableClickPropagation(container)
|
|
.disableScrollPropagation(container);
|
|
} else {
|
|
L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
|
|
}
|
|
|
|
var form = this._form = L.DomUtil.create('form', className + '-list');
|
|
|
|
if (this.options.collapsed) {
|
|
if (!L.Browser.android) {
|
|
L.DomEvent.on(container, {
|
|
mouseenter: this._expand,
|
|
mouseleave: this._collapse
|
|
}, this);
|
|
}
|
|
|
|
var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
|
|
link.href = '#';
|
|
link.title = 'Layers';
|
|
|
|
if (L.Browser.touch) {
|
|
L.DomEvent
|
|
.on(link, 'click', L.DomEvent.stop)
|
|
.on(link, 'click', this._expand, this);
|
|
} else {
|
|
L.DomEvent.on(link, 'focus', this._expand, this);
|
|
}
|
|
|
|
// work around for Firefox Android issue https://github.com/Leaflet/Leaflet/issues/2033
|
|
L.DomEvent.on(form, 'click', function () {
|
|
setTimeout(L.bind(this._onInputClick, this), 0);
|
|
}, this);
|
|
|
|
this._map.on('click', this._collapse, this);
|
|
// TODO keyboard accessibility
|
|
} else {
|
|
this._expand();
|
|
}
|
|
|
|
this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
|
|
this._separator = L.DomUtil.create('div', className + '-separator', form);
|
|
this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
|
|
|
|
container.appendChild(form);
|
|
},
|
|
|
|
_addLayer: function (layer, name, overlay) {
|
|
layer.on('add remove', this._onLayerChange, this);
|
|
|
|
var id = L.stamp(layer);
|
|
|
|
this._layers[id] = {
|
|
layer: layer,
|
|
name: name,
|
|
overlay: overlay
|
|
};
|
|
|
|
if (this.options.autoZIndex && layer.setZIndex) {
|
|
this._lastZIndex++;
|
|
layer.setZIndex(this._lastZIndex);
|
|
}
|
|
},
|
|
|
|
_update: function () {
|
|
if (!this._container) { return; }
|
|
|
|
L.DomUtil.empty(this._baseLayersList);
|
|
L.DomUtil.empty(this._overlaysList);
|
|
|
|
var baseLayersPresent, overlaysPresent, i, obj, baseLayersCount = 0;
|
|
|
|
for (i in this._layers) {
|
|
obj = this._layers[i];
|
|
this._addItem(obj);
|
|
overlaysPresent = overlaysPresent || obj.overlay;
|
|
baseLayersPresent = baseLayersPresent || !obj.overlay;
|
|
baseLayersCount += !obj.overlay ? 1 : 0;
|
|
}
|
|
|
|
// Hide base layers section if there's only one layer.
|
|
if (this.options.hideSingleBase) {
|
|
baseLayersPresent = baseLayersPresent && baseLayersCount > 1;
|
|
this._baseLayersList.style.display = baseLayersPresent ? '' : 'none';
|
|
}
|
|
|
|
this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
|
|
|
|
return this;
|
|
},
|
|
|
|
_onLayerChange: function (e) {
|
|
if (!this._handlingClick) {
|
|
this._update();
|
|
}
|
|
|
|
var overlay = this._layers[L.stamp(e.target)].overlay;
|
|
|
|
var type = overlay ?
|
|
(e.type === 'add' ? 'overlayadd' : 'overlayremove') :
|
|
(e.type === 'add' ? 'baselayerchange' : null);
|
|
|
|
if (type) {
|
|
this._map.fire(type, e.target);
|
|
}
|
|
},
|
|
|
|
// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
|
|
_createRadioElement: function (name, checked) {
|
|
|
|
var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' +
|
|
name + '"' + (checked ? ' checked="checked"' : '') + '/>';
|
|
|
|
var radioFragment = document.createElement('div');
|
|
radioFragment.innerHTML = radioHtml;
|
|
|
|
return radioFragment.firstChild;
|
|
},
|
|
|
|
_addItem: function (obj) {
|
|
var label = document.createElement('label'),
|
|
checked = this._map.hasLayer(obj.layer),
|
|
input;
|
|
|
|
if (obj.overlay) {
|
|
input = document.createElement('input');
|
|
input.type = 'checkbox';
|
|
input.className = 'leaflet-control-layers-selector';
|
|
input.defaultChecked = checked;
|
|
} else {
|
|
input = this._createRadioElement('leaflet-base-layers', checked);
|
|
}
|
|
|
|
input.layerId = L.stamp(obj.layer);
|
|
|
|
L.DomEvent.on(input, 'click', this._onInputClick, this);
|
|
|
|
var name = document.createElement('span');
|
|
name.innerHTML = ' ' + obj.name;
|
|
|
|
label.appendChild(input);
|
|
label.appendChild(name);
|
|
|
|
var container = obj.overlay ? this._overlaysList : this._baseLayersList;
|
|
container.appendChild(label);
|
|
|
|
return label;
|
|
},
|
|
|
|
_onInputClick: function () {
|
|
var inputs = this._form.getElementsByTagName('input'),
|
|
input, layer, hasLayer;
|
|
var addedLayers = [],
|
|
removedLayers = [];
|
|
|
|
this._handlingClick = true;
|
|
|
|
for (var i = 0, len = inputs.length; i < len; i++) {
|
|
input = inputs[i];
|
|
layer = this._layers[input.layerId].layer;
|
|
hasLayer = this._map.hasLayer(layer);
|
|
|
|
if (input.checked && !hasLayer) {
|
|
addedLayers.push(layer);
|
|
|
|
} else if (!input.checked && hasLayer) {
|
|
removedLayers.push(layer);
|
|
}
|
|
}
|
|
|
|
// Bugfix issue 2318: Should remove all old layers before readding new ones
|
|
for (i = 0; i < removedLayers.length; i++) {
|
|
this._map.removeLayer(removedLayers[i]);
|
|
}
|
|
for (i = 0; i < addedLayers.length; i++) {
|
|
this._map.addLayer(addedLayers[i]);
|
|
}
|
|
|
|
this._handlingClick = false;
|
|
|
|
this._refocusOnMap();
|
|
},
|
|
|
|
_expand: function () {
|
|
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
|
|
},
|
|
|
|
_collapse: function () {
|
|
L.DomUtil.removeClass(this._container, 'leaflet-control-layers-expanded');
|
|
}
|
|
});
|
|
|
|
L.control.layers = function (baseLayers, overlays, options) {
|
|
return new L.Control.Layers(baseLayers, overlays, options);
|
|
};
|
|
|
|
|
|
/*
|
|
* L.PosAnimation powers Leaflet pan animations internally.
|
|
*/
|
|
|
|
L.PosAnimation = L.Evented.extend({
|
|
|
|
run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
|
|
this.stop();
|
|
|
|
this._el = el;
|
|
this._inProgress = true;
|
|
this._duration = duration || 0.25;
|
|
this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
|
|
|
|
this._startPos = L.DomUtil.getPosition(el);
|
|
this._offset = newPos.subtract(this._startPos);
|
|
this._startTime = +new Date();
|
|
|
|
this.fire('start');
|
|
|
|
this._animate();
|
|
},
|
|
|
|
stop: function () {
|
|
if (!this._inProgress) { return; }
|
|
|
|
this._step(true);
|
|
this._complete();
|
|
},
|
|
|
|
_animate: function () {
|
|
// animation loop
|
|
this._animId = L.Util.requestAnimFrame(this._animate, this);
|
|
this._step();
|
|
},
|
|
|
|
_step: function (round) {
|
|
var elapsed = (+new Date()) - this._startTime,
|
|
duration = this._duration * 1000;
|
|
|
|
if (elapsed < duration) {
|
|
this._runFrame(this._easeOut(elapsed / duration), round);
|
|
} else {
|
|
this._runFrame(1);
|
|
this._complete();
|
|
}
|
|
},
|
|
|
|
_runFrame: function (progress, round) {
|
|
var pos = this._startPos.add(this._offset.multiplyBy(progress));
|
|
if (round) {
|
|
pos._round();
|
|
}
|
|
L.DomUtil.setPosition(this._el, pos);
|
|
|
|
this.fire('step');
|
|
},
|
|
|
|
_complete: function () {
|
|
L.Util.cancelAnimFrame(this._animId);
|
|
|
|
this._inProgress = false;
|
|
this.fire('end');
|
|
},
|
|
|
|
_easeOut: function (t) {
|
|
return 1 - Math.pow(1 - t, this._easeOutPower);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Extends L.Map to handle panning animations.
|
|
*/
|
|
|
|
L.Map.include({
|
|
|
|
setView: function (center, zoom, options) {
|
|
|
|
zoom = zoom === undefined ? this._zoom : this._limitZoom(zoom);
|
|
center = this._limitCenter(L.latLng(center), zoom, this.options.maxBounds);
|
|
options = options || {};
|
|
|
|
this.stop();
|
|
|
|
if (this._loaded && !options.reset && options !== true) {
|
|
|
|
if (options.animate !== undefined) {
|
|
options.zoom = L.extend({animate: options.animate}, options.zoom);
|
|
options.pan = L.extend({animate: options.animate}, options.pan);
|
|
}
|
|
|
|
// try animating pan or zoom
|
|
var animated = (this._zoom !== zoom) ?
|
|
this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom) :
|
|
this._tryAnimatedPan(center, options.pan);
|
|
|
|
if (animated) {
|
|
// prevent resize handler call, the view will refresh after animation anyway
|
|
clearTimeout(this._sizeTimer);
|
|
return this;
|
|
}
|
|
}
|
|
|
|
// animation didn't start, just reset the map view
|
|
this._resetView(center, zoom);
|
|
|
|
return this;
|
|
},
|
|
|
|
panBy: function (offset, options) {
|
|
offset = L.point(offset).round();
|
|
options = options || {};
|
|
|
|
if (!offset.x && !offset.y) {
|
|
return this;
|
|
}
|
|
//If we pan too far then chrome gets issues with tiles
|
|
// and makes them disappear or appear in the wrong place (slightly offset) #2602
|
|
if (options.animate !== true && !this.getSize().contains(offset)) {
|
|
return this._resetView(this.unproject(this.project(this.getCenter()).add(offset)), this.getZoom());
|
|
}
|
|
|
|
if (!this._panAnim) {
|
|
this._panAnim = new L.PosAnimation();
|
|
|
|
this._panAnim.on({
|
|
'step': this._onPanTransitionStep,
|
|
'end': this._onPanTransitionEnd
|
|
}, this);
|
|
}
|
|
|
|
// don't fire movestart if animating inertia
|
|
if (!options.noMoveStart) {
|
|
this.fire('movestart');
|
|
}
|
|
|
|
// animate pan unless animate: false specified
|
|
if (options.animate !== false) {
|
|
L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
|
|
|
|
var newPos = this._getMapPanePos().subtract(offset);
|
|
this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
|
|
} else {
|
|
this._rawPanBy(offset);
|
|
this.fire('move').fire('moveend');
|
|
}
|
|
|
|
return this;
|
|
},
|
|
|
|
_onPanTransitionStep: function () {
|
|
this.fire('move');
|
|
},
|
|
|
|
_onPanTransitionEnd: function () {
|
|
L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
|
|
this.fire('moveend');
|
|
},
|
|
|
|
_tryAnimatedPan: function (center, options) {
|
|
// difference between the new and current centers in pixels
|
|
var offset = this._getCenterOffset(center)._floor();
|
|
|
|
// don't animate too far unless animate: true specified in options
|
|
if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
|
|
|
|
this.panBy(offset, options);
|
|
|
|
return (options && options.animate) !== false;
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Extends L.Map to handle zoom animations.
|
|
*/
|
|
|
|
L.Map.mergeOptions({
|
|
zoomAnimation: true,
|
|
zoomAnimationThreshold: 4
|
|
});
|
|
|
|
var zoomAnimated = L.DomUtil.TRANSITION && L.Browser.any3d && !L.Browser.mobileOpera;
|
|
|
|
if (zoomAnimated) {
|
|
|
|
L.Map.addInitHook(function () {
|
|
// don't animate on browsers without hardware-accelerated transitions or old Android/Opera
|
|
this._zoomAnimated = this.options.zoomAnimation;
|
|
|
|
// zoom transitions run with the same duration for all layers, so if one of transitionend events
|
|
// happens after starting zoom animation (propagating to the map pane), we know that it ended globally
|
|
if (this._zoomAnimated) {
|
|
|
|
this._createAnimProxy();
|
|
|
|
L.DomEvent.on(this._proxy, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
|
|
}
|
|
});
|
|
}
|
|
|
|
L.Map.include(!zoomAnimated ? {} : {
|
|
|
|
_createAnimProxy: function () {
|
|
|
|
var proxy = this._proxy = L.DomUtil.create('div', 'leaflet-proxy leaflet-zoom-animated');
|
|
this._panes.mapPane.appendChild(proxy);
|
|
|
|
this.on('zoomanim', function (e) {
|
|
L.DomUtil.setTransform(proxy, this.project(e.center, e.zoom), this.getZoomScale(e.zoom, 1));
|
|
}, this);
|
|
|
|
this.on('load moveend', function () {
|
|
var c = this.getCenter(),
|
|
z = this.getZoom();
|
|
L.DomUtil.setTransform(proxy, this.project(c, z), this.getZoomScale(z, 1));
|
|
}, this);
|
|
},
|
|
|
|
_catchTransitionEnd: function (e) {
|
|
if (this._animatingZoom && e.propertyName.indexOf('transform') >= 0) {
|
|
this._onZoomTransitionEnd();
|
|
}
|
|
},
|
|
|
|
_nothingToAnimate: function () {
|
|
return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
|
|
},
|
|
|
|
_tryAnimatedZoom: function (center, zoom, options) {
|
|
|
|
if (this._animatingZoom) { return true; }
|
|
|
|
options = options || {};
|
|
|
|
// don't animate if disabled, not supported or zoom difference is too large
|
|
if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
|
|
Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
|
|
|
|
// offset is the pixel coords of the zoom origin relative to the current center
|
|
var scale = this.getZoomScale(zoom),
|
|
offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale);
|
|
|
|
// don't animate if the zoom origin isn't within one screen from the current center, unless forced
|
|
if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
|
|
|
|
L.Util.requestAnimFrame(function () {
|
|
this
|
|
.fire('movestart')
|
|
.fire('zoomstart')
|
|
._animateZoom(center, zoom, true);
|
|
}, this);
|
|
|
|
return true;
|
|
},
|
|
|
|
_animateZoom: function (center, zoom, startAnim) {
|
|
if (startAnim) {
|
|
this._animatingZoom = true;
|
|
|
|
// remember what center/zoom to set after animation
|
|
this._animateToCenter = center;
|
|
this._animateToZoom = zoom;
|
|
|
|
L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
|
|
}
|
|
|
|
this.fire('zoomanim', {
|
|
center: center,
|
|
zoom: zoom,
|
|
scale: this.getZoomScale(zoom),
|
|
origin: this.latLngToLayerPoint(center),
|
|
offset: this._getCenterOffset(center).multiplyBy(-1)
|
|
});
|
|
},
|
|
|
|
_onZoomTransitionEnd: function () {
|
|
|
|
this._animatingZoom = false;
|
|
|
|
L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
|
|
|
|
this._resetView(this._animateToCenter, this._animateToZoom, true, true);
|
|
}
|
|
});
|
|
|
|
|
|
|
|
L.Map.include({
|
|
flyTo: function (targetCenter, targetZoom) {
|
|
|
|
this.stop();
|
|
|
|
var from = this.project(this.getCenter()),
|
|
to = this.project(targetCenter),
|
|
size = this.getSize(),
|
|
startZoom = this._zoom;
|
|
|
|
targetCenter = L.latLng(targetCenter);
|
|
targetZoom = targetZoom === undefined ? startZoom : targetZoom;
|
|
|
|
var w0 = Math.max(size.x, size.y),
|
|
w1 = w0 * this.getZoomScale(startZoom, targetZoom),
|
|
u1 = to.distanceTo(from),
|
|
rho = 1.42,
|
|
rho2 = rho * rho;
|
|
|
|
function r(i) {
|
|
var b = (w1 * w1 - w0 * w0 + (i ? -1 : 1) * rho2 * rho2 * u1 * u1) / (2 * (i ? w1 : w0) * rho2 * u1);
|
|
return Math.log(Math.sqrt(b * b + 1) - b);
|
|
}
|
|
|
|
function sinh(n) { return (Math.exp(n) - Math.exp(-n)) / 2; }
|
|
function cosh(n) { return (Math.exp(n) + Math.exp(-n)) / 2; }
|
|
function tanh(n) { return sinh(n) / cosh(n); }
|
|
|
|
var r0 = r(0);
|
|
|
|
function w(s) { return w0 * (cosh(r0) / cosh(r0 + rho * s)); }
|
|
function u(s) { return w0 * (cosh(r0) * tanh(r0 + rho * s) - sinh(r0)) / rho2; }
|
|
|
|
function easeOut(t) { return 1 - Math.pow(1 - t, 1.5); }
|
|
|
|
var start = Date.now(),
|
|
S = (r(1) - r0) / rho,
|
|
duration = 1000 * S * 0.8;
|
|
|
|
function frame() {
|
|
var t = (Date.now() - start) / duration,
|
|
s = easeOut(t) * S;
|
|
|
|
if (t <= 1) {
|
|
this._flyToFrame = L.Util.requestAnimFrame(frame, this);
|
|
|
|
this._resetView(
|
|
this.unproject(from.add(to.subtract(from).multiplyBy(u(s) / u1)), startZoom),
|
|
this.getScaleZoom(w0 / w(s), startZoom), true, true);
|
|
|
|
} else {
|
|
this._resetView(targetCenter, targetZoom, true, true);
|
|
}
|
|
}
|
|
|
|
this.fire('zoomstart');
|
|
frame.call(this);
|
|
}
|
|
});
|
|
|
|
|
|
/*
|
|
* Provides L.Map with convenient shortcuts for using browser geolocation features.
|
|
*/
|
|
|
|
L.Map.include({
|
|
_defaultLocateOptions: {
|
|
timeout: 10000,
|
|
watch: false
|
|
// setView: false
|
|
// maxZoom: <Number>
|
|
// maximumAge: 0
|
|
// enableHighAccuracy: false
|
|
},
|
|
|
|
locate: function (/*Object*/ options) {
|
|
|
|
options = this._locateOptions = L.extend({}, this._defaultLocateOptions, options);
|
|
|
|
if (!navigator.geolocation) {
|
|
this._handleGeolocationError({
|
|
code: 0,
|
|
message: 'Geolocation not supported.'
|
|
});
|
|
return this;
|
|
}
|
|
|
|
var onResponse = L.bind(this._handleGeolocationResponse, this),
|
|
onError = L.bind(this._handleGeolocationError, this);
|
|
|
|
if (options.watch) {
|
|
this._locationWatchId =
|
|
navigator.geolocation.watchPosition(onResponse, onError, options);
|
|
} else {
|
|
navigator.geolocation.getCurrentPosition(onResponse, onError, options);
|
|
}
|
|
return this;
|
|
},
|
|
|
|
stopLocate: function () {
|
|
if (navigator.geolocation) {
|
|
navigator.geolocation.clearWatch(this._locationWatchId);
|
|
}
|
|
if (this._locateOptions) {
|
|
this._locateOptions.setView = false;
|
|
}
|
|
return this;
|
|
},
|
|
|
|
_handleGeolocationError: function (error) {
|
|
var c = error.code,
|
|
message = error.message ||
|
|
(c === 1 ? 'permission denied' :
|
|
(c === 2 ? 'position unavailable' : 'timeout'));
|
|
|
|
if (this._locateOptions.setView && !this._loaded) {
|
|
this.fitWorld();
|
|
}
|
|
|
|
this.fire('locationerror', {
|
|
code: c,
|
|
message: 'Geolocation error: ' + message + '.'
|
|
});
|
|
},
|
|
|
|
_handleGeolocationResponse: function (pos) {
|
|
var lat = pos.coords.latitude,
|
|
lng = pos.coords.longitude,
|
|
latlng = new L.LatLng(lat, lng),
|
|
bounds = latlng.toBounds(pos.coords.accuracy),
|
|
options = this._locateOptions;
|
|
|
|
if (options.setView) {
|
|
var zoom = this.getBoundsZoom(bounds);
|
|
this.setView(latlng, options.maxZoom ? Math.min(zoom, options.maxZoom) : zoom);
|
|
}
|
|
|
|
var data = {
|
|
latlng: latlng,
|
|
bounds: bounds,
|
|
timestamp: pos.timestamp
|
|
};
|
|
|
|
for (var i in pos.coords) {
|
|
if (typeof pos.coords[i] === 'number') {
|
|
data[i] = pos.coords[i];
|
|
}
|
|
}
|
|
|
|
this.fire('locationfound', data);
|
|
}
|
|
});
|
|
|
|
|
|
}(window, document)); |