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5670 lines
130 KiB
5670 lines
130 KiB
/* |
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Copyright (c) 2010-2011, CloudMade, Vladimir Agafonkin |
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Leaflet is a modern open-source JavaScript library for interactive maps. |
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http://leaflet.cloudmade.com |
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*/ |
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|
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(function (root) { |
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root.L = { |
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VERSION: '0.3', |
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|
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ROOT_URL: root.L_ROOT_URL || (function () { |
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var scripts = document.getElementsByTagName('script'), |
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leafletRe = /\/?leaflet[\-\._]?([\w\-\._]*)\.js\??/; |
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|
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var i, len, src, matches; |
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|
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for (i = 0, len = scripts.length; i < len; i++) { |
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src = scripts[i].src; |
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matches = src.match(leafletRe); |
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|
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if (matches) { |
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if (matches[1] === 'include') { |
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return '../../dist/'; |
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} |
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return src.split(leafletRe)[0] + '/'; |
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} |
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} |
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return ''; |
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}()), |
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|
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noConflict: function () { |
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root.L = this._originalL; |
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return this; |
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}, |
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|
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_originalL: root.L |
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}; |
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}(this)); |
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|
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/* |
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* L.Util is a namespace for various utility functions. |
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*/ |
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|
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L.Util = { |
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extend: function (/*Object*/ dest) /*-> Object*/ { // merge src properties into dest |
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var sources = Array.prototype.slice.call(arguments, 1); |
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for (var j = 0, len = sources.length, src; j < len; j++) { |
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src = sources[j] || {}; |
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for (var i in src) { |
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if (src.hasOwnProperty(i)) { |
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dest[i] = src[i]; |
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} |
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} |
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} |
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return dest; |
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}, |
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|
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bind: function (/*Function*/ fn, /*Object*/ obj) /*-> Object*/ { |
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return function () { |
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return fn.apply(obj, arguments); |
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}; |
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}, |
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|
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stamp: (function () { |
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var lastId = 0, key = '_leaflet_id'; |
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return function (/*Object*/ obj) { |
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obj[key] = obj[key] || ++lastId; |
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return obj[key]; |
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}; |
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}()), |
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|
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requestAnimFrame: (function () { |
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function timeoutDefer(callback) { |
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window.setTimeout(callback, 1000 / 60); |
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} |
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|
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var requestFn = window.requestAnimationFrame || |
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window.webkitRequestAnimationFrame || |
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window.mozRequestAnimationFrame || |
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window.oRequestAnimationFrame || |
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window.msRequestAnimationFrame || |
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timeoutDefer; |
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|
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return function (callback, context, immediate, contextEl) { |
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callback = context ? L.Util.bind(callback, context) : callback; |
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if (immediate && requestFn === timeoutDefer) { |
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callback(); |
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} else { |
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requestFn(callback, contextEl); |
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} |
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}; |
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}()), |
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|
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limitExecByInterval: function (fn, time, context) { |
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var lock, execOnUnlock, args; |
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function exec() { |
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lock = false; |
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if (execOnUnlock) { |
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args.callee.apply(context, args); |
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execOnUnlock = false; |
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} |
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} |
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return function () { |
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args = arguments; |
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if (!lock) { |
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lock = true; |
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setTimeout(exec, time); |
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fn.apply(context, args); |
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} else { |
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execOnUnlock = true; |
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} |
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}; |
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}, |
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|
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falseFn: function () { |
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return false; |
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}, |
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|
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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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|
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setOptions: function (obj, options) { |
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obj.options = L.Util.extend({}, obj.options, options); |
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}, |
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|
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getParamString: function (obj) { |
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var params = []; |
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for (var i in obj) { |
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if (obj.hasOwnProperty(i)) { |
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params.push(i + '=' + obj[i]); |
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} |
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} |
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return '?' + params.join('&'); |
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}, |
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|
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template: function (str, data) { |
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return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) { |
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var value = data[key]; |
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if (!data.hasOwnProperty(key)) { |
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throw new Error('No value provided for variable ' + str); |
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} |
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return value; |
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}); |
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} |
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}; |
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|
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/* |
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* Class powers the OOP facilities of the library. Thanks to John Resig and Dean Edwards for inspiration! |
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*/ |
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|
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L.Class = function () {}; |
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|
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L.Class.extend = function (/*Object*/ props) /*-> Class*/ { |
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|
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// extended class with the new prototype |
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var NewClass = function () { |
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if (this.initialize) { |
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this.initialize.apply(this, arguments); |
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} |
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}; |
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|
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// instantiate class without calling constructor |
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var F = function () {}; |
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F.prototype = this.prototype; |
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var proto = new F(); |
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proto.constructor = NewClass; |
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NewClass.prototype = proto; |
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|
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// add superclass access |
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NewClass.superclass = this.prototype; |
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|
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// add class name |
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//proto.className = props; |
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|
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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' && i !== 'superclass') { |
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NewClass[i] = this[i]; |
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} |
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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.Util.extend(NewClass, props.statics); |
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delete props.statics; |
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} |
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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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|
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// merge options |
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if (props.options && proto.options) { |
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props.options = L.Util.extend({}, proto.options, props.options); |
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} |
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|
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// mix given properties into the prototype |
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L.Util.extend(proto, props); |
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|
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// allow inheriting further |
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NewClass.extend = L.Class.extend; |
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|
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// method for adding properties to prototype |
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NewClass.include = function (props) { |
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L.Util.extend(this.prototype, props); |
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}; |
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return NewClass; |
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}; |
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|
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/* |
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* L.Mixin.Events adds custom events functionality to Leaflet classes |
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*/ |
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L.Mixin = {}; |
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|
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L.Mixin.Events = { |
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addEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) { |
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var events = this._leaflet_events = this._leaflet_events || {}; |
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events[type] = events[type] || []; |
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events[type].push({ |
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action: fn, |
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context: context || this |
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}); |
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return this; |
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}, |
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|
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hasEventListeners: function (/*String*/ type) /*-> Boolean*/ { |
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var k = '_leaflet_events'; |
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return (k in this) && (type in this[k]) && (this[k][type].length > 0); |
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}, |
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|
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removeEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) { |
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if (!this.hasEventListeners(type)) { |
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return this; |
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} |
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for (var i = 0, events = this._leaflet_events, len = events[type].length; i < len; i++) { |
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if ( |
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(events[type][i].action === fn) && |
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(!context || (events[type][i].context === context)) |
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) { |
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events[type].splice(i, 1); |
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return this; |
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} |
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} |
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return this; |
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}, |
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|
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fireEvent: function (/*String*/ type, /*(optional) Object*/ data) { |
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if (!this.hasEventListeners(type)) { |
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return this; |
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} |
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|
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var event = L.Util.extend({ |
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type: type, |
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target: this |
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}, data); |
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var listeners = this._leaflet_events[type].slice(); |
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|
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for (var i = 0, len = listeners.length; i < len; i++) { |
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listeners[i].action.call(listeners[i].context || this, event); |
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} |
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return this; |
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} |
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}; |
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L.Mixin.Events.on = L.Mixin.Events.addEventListener; |
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L.Mixin.Events.off = L.Mixin.Events.removeEventListener; |
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L.Mixin.Events.fire = L.Mixin.Events.fireEvent; |
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(function () { |
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var ua = navigator.userAgent.toLowerCase(), |
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ie = !!window.ActiveXObject, |
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webkit = ua.indexOf("webkit") !== -1, |
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mobile = typeof orientation !== 'undefined' ? true : false, |
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android = ua.indexOf("android") !== -1, |
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opera = window.opera; |
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|
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L.Browser = { |
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ie: ie, |
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ie6: ie && !window.XMLHttpRequest, |
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webkit: webkit, |
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webkit3d: webkit && ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()), |
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gecko: ua.indexOf("gecko") !== -1, |
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opera: opera, |
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android: android, |
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mobileWebkit: mobile && webkit, |
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mobileOpera: mobile && opera, |
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mobile: mobile, |
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touch: (function () { |
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var touchSupported = false, |
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startName = 'ontouchstart'; |
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|
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// WebKit, etc |
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if (startName in document.documentElement) { |
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return true; |
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} |
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// Firefox/Gecko |
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var e = document.createElement('div'); |
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|
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// If no support for basic event stuff, unlikely to have touch support |
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if (!e.setAttribute || !e.removeAttribute) { |
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return false; |
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} |
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e.setAttribute(startName, 'return;'); |
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if (typeof e[startName] === 'function') { |
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touchSupported = true; |
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} |
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e.removeAttribute(startName); |
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e = null; |
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|
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return touchSupported; |
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}()) |
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}; |
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}()); |
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|
|
|
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/* |
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* L.Point represents a point with x and y coordinates. |
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*/ |
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|
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L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) { |
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this.x = (round ? Math.round(x) : x); |
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this.y = (round ? Math.round(y) : y); |
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}; |
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|
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L.Point.prototype = { |
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add: function (point) { |
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return this.clone()._add(point); |
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}, |
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_add: function (point) { |
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this.x += point.x; |
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this.y += point.y; |
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return this; |
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}, |
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|
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subtract: function (point) { |
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return this.clone()._subtract(point); |
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}, |
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|
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// destructive subtract (faster) |
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_subtract: function (point) { |
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this.x -= point.x; |
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this.y -= point.y; |
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return this; |
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}, |
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|
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divideBy: function (num, round) { |
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return new L.Point(this.x / num, this.y / num, round); |
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}, |
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|
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multiplyBy: function (num) { |
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return new L.Point(this.x * num, this.y * num); |
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}, |
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|
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distanceTo: function (point) { |
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var x = point.x - this.x, |
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y = point.y - this.y; |
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return Math.sqrt(x * x + y * y); |
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}, |
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|
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round: function () { |
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return this.clone()._round(); |
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}, |
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|
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// destructive round |
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_round: function () { |
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this.x = Math.round(this.x); |
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this.y = Math.round(this.y); |
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return this; |
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}, |
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|
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clone: function () { |
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return new L.Point(this.x, this.y); |
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}, |
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|
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toString: function () { |
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return 'Point(' + |
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L.Util.formatNum(this.x) + ', ' + |
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L.Util.formatNum(this.y) + ')'; |
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} |
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}; |
|
|
|
|
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/* |
|
* L.Bounds represents a rectangular area on the screen in pixel coordinates. |
|
*/ |
|
|
|
L.Bounds = L.Class.extend({ |
|
initialize: function (min, max) { //(Point, Point) or Point[] |
|
if (!min) { |
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return; |
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} |
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var points = (min instanceof Array ? min : [min, max]); |
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for (var i = 0, len = points.length; i < len; i++) { |
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this.extend(points[i]); |
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} |
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}, |
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|
|
// extend the bounds to contain the given point |
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extend: function (/*Point*/ point) { |
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if (!this.min && !this.max) { |
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this.min = new L.Point(point.x, point.y); |
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this.max = new L.Point(point.x, point.y); |
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} else { |
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this.min.x = Math.min(point.x, this.min.x); |
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this.max.x = Math.max(point.x, this.max.x); |
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this.min.y = Math.min(point.y, this.min.y); |
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this.max.y = Math.max(point.y, this.max.y); |
|
} |
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}, |
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|
|
getCenter: function (round)/*->Point*/ { |
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return new L.Point( |
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(this.min.x + this.max.x) / 2, |
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(this.min.y + this.max.y) / 2, round); |
|
}, |
|
|
|
contains: function (/*Bounds or Point*/ obj)/*->Boolean*/ { |
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var min, max; |
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|
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if (obj instanceof L.Bounds) { |
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min = obj.min; |
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max = obj.max; |
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} else { |
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min = max = obj; |
|
} |
|
|
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return (min.x >= this.min.x) && |
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(max.x <= this.max.x) && |
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(min.y >= this.min.y) && |
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(max.y <= this.max.y); |
|
}, |
|
|
|
intersects: function (/*Bounds*/ bounds) { |
|
var min = this.min, |
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max = this.max, |
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min2 = bounds.min, |
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max2 = bounds.max; |
|
|
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var xIntersects = (max2.x >= min.x) && (min2.x <= max.x), |
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yIntersects = (max2.y >= min.y) && (min2.y <= max.y); |
|
|
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return xIntersects && yIntersects; |
|
} |
|
|
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}); |
|
|
|
|
|
/* |
|
* L.Transformation is an utility class to perform simple point transformations through a 2d-matrix. |
|
*/ |
|
|
|
L.Transformation = L.Class.extend({ |
|
initialize: function (/*Number*/ a, /*Number*/ b, /*Number*/ c, /*Number*/ d) { |
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this._a = a; |
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this._b = b; |
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this._c = c; |
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this._d = d; |
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}, |
|
|
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transform: function (point, scale) { |
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return this._transform(point.clone(), scale); |
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}, |
|
|
|
// destructive transform (faster) |
|
_transform: function (/*Point*/ point, /*Number*/ scale) /*-> Point*/ { |
|
scale = scale || 1; |
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point.x = scale * (this._a * point.x + this._b); |
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point.y = scale * (this._c * point.y + this._d); |
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return point; |
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}, |
|
|
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untransform: function (/*Point*/ point, /*Number*/ scale) /*-> Point*/ { |
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scale = scale || 1; |
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return new L.Point( |
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(point.x / scale - this._b) / this._a, |
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(point.y / scale - this._d) / this._c); |
|
} |
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}); |
|
|
|
|
|
/* |
|
* 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) { |
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var value = el.style[style]; |
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if (!value && el.currentStyle) { |
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value = el.currentStyle[style]; |
|
} |
|
if (!value || value === 'auto') { |
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var css = document.defaultView.getComputedStyle(el, null); |
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value = css ? css[style] : null; |
|
} |
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return (value === 'auto' ? null : value); |
|
}, |
|
|
|
getViewportOffset: function (element) { |
|
var top = 0, |
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left = 0, |
|
el = element, |
|
docBody = document.body; |
|
|
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do { |
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top += el.offsetTop || 0; |
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left += el.offsetLeft || 0; |
|
|
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if (el.offsetParent === docBody && |
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L.DomUtil.getStyle(el, 'position') === 'absolute') { |
|
break; |
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} |
|
el = el.offsetParent; |
|
} while (el); |
|
|
|
el = element; |
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|
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do { |
|
if (el === docBody) { |
|
break; |
|
} |
|
|
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top -= el.scrollTop || 0; |
|
left -= el.scrollLeft || 0; |
|
|
|
el = el.parentNode; |
|
} while (el); |
|
|
|
return new L.Point(left, top); |
|
}, |
|
|
|
create: function (tagName, className, container) { |
|
var el = document.createElement(tagName); |
|
el.className = className; |
|
if (container) { |
|
container.appendChild(el); |
|
} |
|
return el; |
|
}, |
|
|
|
disableTextSelection: function () { |
|
if (document.selection && document.selection.empty) { |
|
document.selection.empty(); |
|
} |
|
if (!this._onselectstart) { |
|
this._onselectstart = document.onselectstart; |
|
document.onselectstart = L.Util.falseFn; |
|
} |
|
}, |
|
|
|
enableTextSelection: function () { |
|
document.onselectstart = this._onselectstart; |
|
this._onselectstart = null; |
|
}, |
|
|
|
hasClass: function (el, name) { |
|
return (el.className.length > 0) && |
|
new RegExp("(^|\\s)" + name + "(\\s|$)").test(el.className); |
|
}, |
|
|
|
addClass: function (el, name) { |
|
if (!L.DomUtil.hasClass(el, name)) { |
|
el.className += (el.className ? ' ' : '') + name; |
|
} |
|
}, |
|
|
|
removeClass: function (el, name) { |
|
el.className = el.className.replace(/(\S+)\s*/g, function (w, match) { |
|
if (match === name) { |
|
return ''; |
|
} |
|
return w; |
|
}).replace(/^\s+/, ''); |
|
}, |
|
|
|
setOpacity: function (el, value) { |
|
if (L.Browser.ie) { |
|
el.style.filter = 'alpha(opacity=' + Math.round(value * 100) + ')'; |
|
} else { |
|
el.style.opacity = value; |
|
} |
|
}, |
|
|
|
//TODO refactor away this ugly translate/position mess |
|
|
|
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; |
|
}, |
|
|
|
getTranslateString: function (point) { |
|
return L.DomUtil.TRANSLATE_OPEN + |
|
point.x + 'px,' + point.y + 'px' + |
|
L.DomUtil.TRANSLATE_CLOSE; |
|
}, |
|
|
|
getScaleString: function (scale, origin) { |
|
var preTranslateStr = L.DomUtil.getTranslateString(origin), |
|
scaleStr = ' scale(' + scale + ') ', |
|
postTranslateStr = L.DomUtil.getTranslateString(origin.multiplyBy(-1)); |
|
|
|
return preTranslateStr + scaleStr + postTranslateStr; |
|
}, |
|
|
|
setPosition: function (el, point) { |
|
el._leaflet_pos = point; |
|
if (L.Browser.webkit3d) { |
|
el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point); |
|
|
|
if (L.Browser.android) { |
|
el.style['-webkit-perspective'] = '1000'; |
|
el.style['-webkit-backface-visibility'] = 'hidden'; |
|
} |
|
} else { |
|
el.style.left = point.x + 'px'; |
|
el.style.top = point.y + 'px'; |
|
} |
|
}, |
|
|
|
getPosition: function (el) { |
|
return el._leaflet_pos; |
|
} |
|
}; |
|
|
|
L.Util.extend(L.DomUtil, { |
|
TRANSITION: L.DomUtil.testProp(['transition', 'webkitTransition', 'OTransition', 'MozTransition', 'msTransition']), |
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TRANSFORM: L.DomUtil.testProp(['transformProperty', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']), |
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|
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TRANSLATE_OPEN: 'translate' + (L.Browser.webkit3d ? '3d(' : '('), |
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TRANSLATE_CLOSE: L.Browser.webkit3d ? ',0)' : ')' |
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}); |
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|
|
|
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/* |
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CM.LatLng represents a geographical point with latitude and longtitude coordinates. |
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*/ |
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|
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L.LatLng = function (/*Number*/ rawLat, /*Number*/ rawLng, /*Boolean*/ noWrap) { |
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var lat = parseFloat(rawLat), |
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lng = parseFloat(rawLng); |
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|
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if (isNaN(lat) || isNaN(lng)) { |
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throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')'); |
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} |
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|
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if (noWrap !== true) { |
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lat = Math.max(Math.min(lat, 90), -90); // clamp latitude into -90..90 |
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lng = (lng + 180) % 360 + ((lng < -180 || lng === 180) ? 180 : -180); // wrap longtitude into -180..180 |
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} |
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|
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//TODO change to lat() & lng() |
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this.lat = lat; |
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this.lng = lng; |
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}; |
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|
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L.Util.extend(L.LatLng, { |
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DEG_TO_RAD: Math.PI / 180, |
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RAD_TO_DEG: 180 / Math.PI, |
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MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check |
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}); |
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|
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L.LatLng.prototype = { |
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equals: function (/*LatLng*/ obj) { |
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if (!(obj instanceof L.LatLng)) { |
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return false; |
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} |
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|
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var margin = Math.max(Math.abs(this.lat - obj.lat), Math.abs(this.lng - obj.lng)); |
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return margin <= L.LatLng.MAX_MARGIN; |
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}, |
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|
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toString: function () { |
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return 'LatLng(' + |
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L.Util.formatNum(this.lat) + ', ' + |
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L.Util.formatNum(this.lng) + ')'; |
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}, |
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|
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// Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula |
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distanceTo: function (/*LatLng*/ other)/*->Double*/ { |
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var R = 6378137, // earth radius in meters |
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d2r = L.LatLng.DEG_TO_RAD, |
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dLat = (other.lat - this.lat) * d2r, |
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dLon = (other.lng - this.lng) * d2r, |
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lat1 = this.lat * d2r, |
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lat2 = other.lat * d2r, |
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sin1 = Math.sin(dLat / 2), |
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sin2 = Math.sin(dLon / 2); |
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|
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var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2); |
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|
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return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); |
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} |
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}; |
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|
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/* |
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* L.LatLngBounds represents a rectangular area on the map in geographical coordinates. |
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*/ |
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|
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L.LatLngBounds = L.Class.extend({ |
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initialize: function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[]) |
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if (!southWest) { |
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return; |
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} |
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var latlngs = (southWest instanceof Array ? southWest : [southWest, northEast]); |
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for (var i = 0, len = latlngs.length; i < len; i++) { |
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this.extend(latlngs[i]); |
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} |
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}, |
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|
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// extend the bounds to contain the given point |
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extend: function (/*LatLng*/ latlng) { |
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if (!this._southWest && !this._northEast) { |
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this._southWest = new L.LatLng(latlng.lat, latlng.lng, true); |
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this._northEast = new L.LatLng(latlng.lat, latlng.lng, true); |
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} else { |
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this._southWest.lat = Math.min(latlng.lat, this._southWest.lat); |
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this._southWest.lng = Math.min(latlng.lng, this._southWest.lng); |
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this._northEast.lat = Math.max(latlng.lat, this._northEast.lat); |
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this._northEast.lng = Math.max(latlng.lng, this._northEast.lng); |
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} |
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}, |
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|
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getCenter: function () /*-> LatLng*/ { |
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return new L.LatLng( |
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(this._southWest.lat + this._northEast.lat) / 2, |
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(this._southWest.lng + this._northEast.lng) / 2); |
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}, |
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|
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getSouthWest: function () { |
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return this._southWest; |
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}, |
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|
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getNorthEast: function () { |
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return this._northEast; |
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}, |
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|
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getNorthWest: function () { |
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return new L.LatLng(this._northEast.lat, this._southWest.lng, true); |
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}, |
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|
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getSouthEast: function () { |
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return new L.LatLng(this._southWest.lat, this._northEast.lng, true); |
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}, |
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|
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contains: function (/*LatLngBounds or LatLng*/ obj) /*-> Boolean*/ { |
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var sw = this._southWest, |
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ne = this._northEast, |
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sw2, ne2; |
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|
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if (obj instanceof L.LatLngBounds) { |
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sw2 = obj.getSouthWest(); |
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ne2 = obj.getNorthEast(); |
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} else { |
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sw2 = ne2 = obj; |
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} |
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|
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return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) && |
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(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng); |
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}, |
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|
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intersects: function (/*LatLngBounds*/ bounds) { |
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var sw = this._southWest, |
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ne = this._northEast, |
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sw2 = bounds.getSouthWest(), |
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ne2 = bounds.getNorthEast(); |
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|
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var latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat), |
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lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng); |
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|
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return latIntersects && lngIntersects; |
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}, |
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|
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toBBoxString: function () { |
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var sw = this._southWest, |
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ne = this._northEast; |
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return [sw.lng, sw.lat, ne.lng, ne.lat].join(','); |
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} |
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}); |
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|
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//TODO International date line? |
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|
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/* |
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* L.Projection contains various geographical projections used by CRS classes. |
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*/ |
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|
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L.Projection = {}; |
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|
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L.Projection.SphericalMercator = { |
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MAX_LATITUDE: 85.0511287798, |
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|
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project: function (/*LatLng*/ latlng) /*-> Point*/ { |
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var d = L.LatLng.DEG_TO_RAD, |
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max = this.MAX_LATITUDE, |
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lat = Math.max(Math.min(max, latlng.lat), -max), |
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x = latlng.lng * d, |
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y = lat * d; |
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y = Math.log(Math.tan((Math.PI / 4) + (y / 2))); |
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|
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return new L.Point(x, y); |
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}, |
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|
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unproject: function (/*Point*/ point, /*Boolean*/ unbounded) /*-> LatLng*/ { |
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var d = L.LatLng.RAD_TO_DEG, |
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lng = point.x * d, |
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lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d; |
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|
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return new L.LatLng(lat, lng, unbounded); |
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} |
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}; |
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L.Projection.LonLat = { |
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project: function (latlng) { |
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return new L.Point(latlng.lng, latlng.lat); |
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}, |
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|
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unproject: function (point, unbounded) { |
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return new L.LatLng(point.y, point.x, unbounded); |
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} |
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}; |
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L.CRS = { |
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latLngToPoint: function (/*LatLng*/ latlng, /*Number*/ scale)/*-> Point*/ { |
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var projectedPoint = this.projection.project(latlng); |
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return this.transformation._transform(projectedPoint, scale); |
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}, |
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|
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pointToLatLng: function (/*Point*/ point, /*Number*/ scale, /*(optional) Boolean*/ unbounded)/*-> LatLng*/ { |
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var untransformedPoint = this.transformation.untransform(point, scale); |
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return this.projection.unproject(untransformedPoint, unbounded); |
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//TODO get rid of 'unbounded' everywhere |
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}, |
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|
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project: function (latlng) { |
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return this.projection.project(latlng); |
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} |
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}; |
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|
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L.CRS.EPSG3857 = L.Util.extend({}, L.CRS, { |
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code: 'EPSG:3857', |
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|
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projection: L.Projection.SphericalMercator, |
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transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5), |
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|
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project: function (/*LatLng*/ latlng)/*-> Point*/ { |
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var projectedPoint = this.projection.project(latlng), |
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earthRadius = 6378137; |
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return projectedPoint.multiplyBy(earthRadius); |
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} |
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}); |
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|
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L.CRS.EPSG900913 = L.Util.extend({}, L.CRS.EPSG3857, { |
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code: 'EPSG:900913' |
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}); |
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|
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L.CRS.EPSG4326 = L.Util.extend({}, L.CRS, { |
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code: 'EPSG:4326', |
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|
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projection: L.Projection.LonLat, |
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transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5) |
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}); |
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|
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/* |
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* L.Map is the central class of the API - it is used to create a map. |
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*/ |
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|
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L.Map = L.Class.extend({ |
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includes: L.Mixin.Events, |
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|
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options: { |
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// projection |
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crs: L.CRS.EPSG3857 || L.CRS.EPSG4326, |
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scale: function (zoom) { |
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return 256 * Math.pow(2, zoom); |
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}, |
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|
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// state |
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center: null, |
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zoom: null, |
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layers: [], |
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|
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// interaction |
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dragging: true, |
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touchZoom: L.Browser.touch && !L.Browser.android, |
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scrollWheelZoom: !L.Browser.touch, |
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doubleClickZoom: true, |
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boxZoom: true, |
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|
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// controls |
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zoomControl: true, |
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attributionControl: true, |
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|
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// animation |
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fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android, |
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zoomAnimation: L.DomUtil.TRANSITION && !L.Browser.android && !L.Browser.mobileOpera, |
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|
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// misc |
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trackResize: true, |
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closePopupOnClick: true, |
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worldCopyJump: true |
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}, |
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|
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// constructor |
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|
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initialize: function (id, options) { // (HTMLElement or String, Object) |
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L.Util.setOptions(this, options); |
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|
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this._container = L.DomUtil.get(id); |
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|
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if (this._container._leaflet) { |
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throw new Error("Map container is already initialized."); |
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} |
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this._container._leaflet = true; |
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|
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this._initLayout(); |
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|
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if (L.DomEvent) { |
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this._initEvents(); |
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if (L.Handler) { |
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this._initInteraction(); |
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} |
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if (L.Control) { |
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this._initControls(); |
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} |
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} |
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|
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if (this.options.maxBounds) { |
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this.setMaxBounds(this.options.maxBounds); |
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} |
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|
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var center = this.options.center, |
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zoom = this.options.zoom; |
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|
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if (center !== null && zoom !== null) { |
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this.setView(center, zoom, true); |
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} |
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|
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var layers = this.options.layers; |
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layers = (layers instanceof Array ? layers : [layers]); |
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this._tileLayersNum = 0; |
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this._initLayers(layers); |
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}, |
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|
|
|
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// public methods that modify map state |
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|
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// replaced by animation-powered implementation in Map.PanAnimation.js |
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setView: function (center, zoom) { |
|
// reset the map view |
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this._resetView(center, this._limitZoom(zoom)); |
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return this; |
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}, |
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|
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setZoom: function (zoom) { // (Number) |
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return this.setView(this.getCenter(), zoom); |
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}, |
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|
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zoomIn: function () { |
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return this.setZoom(this._zoom + 1); |
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}, |
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|
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zoomOut: function () { |
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return this.setZoom(this._zoom - 1); |
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}, |
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|
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fitBounds: function (bounds) { // (LatLngBounds) |
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var zoom = this.getBoundsZoom(bounds); |
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return this.setView(bounds.getCenter(), zoom); |
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}, |
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|
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fitWorld: function () { |
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var sw = new L.LatLng(-60, -170), |
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ne = new L.LatLng(85, 179); |
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return this.fitBounds(new L.LatLngBounds(sw, ne)); |
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}, |
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|
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panTo: function (center) { // (LatLng) |
|
return this.setView(center, this._zoom); |
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}, |
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|
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panBy: function (offset) { // (Point) |
|
// replaced with animated panBy in Map.Animation.js |
|
this.fire('movestart'); |
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|
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this._rawPanBy(offset); |
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|
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this.fire('move'); |
|
this.fire('moveend'); |
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|
|
return this; |
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}, |
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|
|
setMaxBounds: function (bounds) { |
|
this.options.maxBounds = bounds; |
|
|
|
if (!bounds) { |
|
this._boundsMinZoom = null; |
|
return this; |
|
} |
|
|
|
var minZoom = this.getBoundsZoom(bounds, true); |
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|
|
this._boundsMinZoom = minZoom; |
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|
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if (this._loaded) { |
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if (this._zoom < minZoom) { |
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this.setView(bounds.getCenter(), minZoom); |
|
} else { |
|
this.panInsideBounds(bounds); |
|
} |
|
} |
|
return this; |
|
}, |
|
|
|
panInsideBounds: function (bounds) { |
|
var viewBounds = this.getBounds(), |
|
viewSw = this.project(viewBounds.getSouthWest()), |
|
viewNe = this.project(viewBounds.getNorthEast()), |
|
sw = this.project(bounds.getSouthWest()), |
|
ne = this.project(bounds.getNorthEast()), |
|
dx = 0, |
|
dy = 0; |
|
|
|
if (viewNe.y < ne.y) { // north |
|
dy = ne.y - viewNe.y; |
|
} |
|
if (viewNe.x > ne.x) { // east |
|
dx = ne.x - viewNe.x; |
|
} |
|
if (viewSw.y > sw.y) { // south |
|
dy = sw.y - viewSw.y; |
|
} |
|
if (viewSw.x < sw.x) { // west |
|
dx = sw.x - viewSw.x; |
|
} |
|
|
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return this.panBy(new L.Point(dx, dy, true)); |
|
}, |
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|
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addLayer: function (layer, insertAtTheTop) { |
|
var id = L.Util.stamp(layer); |
|
|
|
if (this._layers[id]) { |
|
return this; |
|
} |
|
|
|
this._layers[id] = layer; |
|
|
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if (layer.options && !isNaN(layer.options.maxZoom)) { |
|
this._layersMaxZoom = Math.max(this._layersMaxZoom || 0, layer.options.maxZoom); |
|
} |
|
if (layer.options && !isNaN(layer.options.minZoom)) { |
|
this._layersMinZoom = Math.min(this._layersMinZoom || Infinity, layer.options.minZoom); |
|
} |
|
//TODO getMaxZoom, getMinZoom in ILayer (instead of options) |
|
|
|
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) { |
|
this._tileLayersNum++; |
|
layer.on('load', this._onTileLayerLoad, this); |
|
} |
|
if (this.attributionControl && layer.getAttribution) { |
|
this.attributionControl.addAttribution(layer.getAttribution()); |
|
} |
|
|
|
var onMapLoad = function () { |
|
layer.onAdd(this, insertAtTheTop); |
|
this.fire('layeradd', {layer: layer}); |
|
}; |
|
|
|
if (this._loaded) { |
|
onMapLoad.call(this); |
|
} else { |
|
this.on('load', onMapLoad, this); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.Util.stamp(layer); |
|
|
|
if (this._layers[id]) { |
|
layer.onRemove(this); |
|
delete this._layers[id]; |
|
|
|
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) { |
|
this._tileLayersNum--; |
|
layer.off('load', this._onTileLayerLoad, this); |
|
} |
|
if (this.attributionControl && layer.getAttribution) { |
|
this.attributionControl.removeAttribution(layer.getAttribution()); |
|
} |
|
|
|
this.fire('layerremove', {layer: layer}); |
|
} |
|
return this; |
|
}, |
|
|
|
hasLayer: function (layer) { |
|
var id = L.Util.stamp(layer); |
|
return this._layers.hasOwnProperty(id); |
|
}, |
|
|
|
invalidateSize: function () { |
|
var oldSize = this.getSize(); |
|
|
|
this._sizeChanged = true; |
|
|
|
if (this.options.maxBounds) { |
|
this.setMaxBounds(this.options.maxBounds); |
|
} |
|
|
|
if (!this._loaded) { |
|
return this; |
|
} |
|
|
|
this._rawPanBy(oldSize.subtract(this.getSize()).divideBy(2, true)); |
|
|
|
this.fire('move'); |
|
|
|
clearTimeout(this._sizeTimer); |
|
this._sizeTimer = setTimeout(L.Util.bind(function () { |
|
this.fire('moveend'); |
|
}, this), 200); |
|
|
|
return this; |
|
}, |
|
|
|
|
|
// public methods for getting map state |
|
|
|
getCenter: function (unbounded) { // (Boolean) |
|
var viewHalf = this.getSize().divideBy(2), |
|
centerPoint = this._getTopLeftPoint().add(viewHalf); |
|
return this.unproject(centerPoint, this._zoom, unbounded); |
|
}, |
|
|
|
getZoom: function () { |
|
return this._zoom; |
|
}, |
|
|
|
getBounds: function () { |
|
var bounds = this.getPixelBounds(), |
|
sw = this.unproject(new L.Point(bounds.min.x, bounds.max.y), this._zoom, true), |
|
ne = this.unproject(new L.Point(bounds.max.x, bounds.min.y), this._zoom, true); |
|
return new L.LatLngBounds(sw, ne); |
|
}, |
|
|
|
getMinZoom: function () { |
|
var z1 = this.options.minZoom || 0, |
|
z2 = this._layersMinZoom || 0, |
|
z3 = this._boundsMinZoom || 0; |
|
|
|
return Math.max(z1, z2, z3); |
|
}, |
|
|
|
getMaxZoom: function () { |
|
var z1 = isNaN(this.options.maxZoom) ? Infinity : this.options.maxZoom, |
|
z2 = this._layersMaxZoom || Infinity; |
|
|
|
return Math.min(z1, z2); |
|
}, |
|
|
|
getBoundsZoom: function (bounds, inside) { // (LatLngBounds) |
|
var size = this.getSize(), |
|
zoom = this.options.minZoom || 0, |
|
maxZoom = this.getMaxZoom(), |
|
ne = bounds.getNorthEast(), |
|
sw = bounds.getSouthWest(), |
|
boundsSize, |
|
nePoint, |
|
swPoint, |
|
zoomNotFound = true; |
|
|
|
if (inside) { |
|
zoom--; |
|
} |
|
|
|
do { |
|
zoom++; |
|
nePoint = this.project(ne, zoom); |
|
swPoint = this.project(sw, zoom); |
|
boundsSize = new L.Point(nePoint.x - swPoint.x, swPoint.y - nePoint.y); |
|
|
|
if (!inside) { |
|
zoomNotFound = (boundsSize.x <= size.x) && (boundsSize.y <= size.y); |
|
} else { |
|
zoomNotFound = (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; |
|
}, |
|
|
|
getPixelBounds: function () { |
|
var topLeftPoint = this._getTopLeftPoint(), |
|
size = this.getSize(); |
|
return new L.Bounds(topLeftPoint, topLeftPoint.add(size)); |
|
}, |
|
|
|
getPixelOrigin: function () { |
|
return this._initialTopLeftPoint; |
|
}, |
|
|
|
getPanes: function () { |
|
return this._panes; |
|
}, |
|
|
|
|
|
// conversion methods |
|
|
|
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)); |
|
}, |
|
|
|
containerPointToLayerPoint: function (point) { // (Point) |
|
return point.subtract(L.DomUtil.getPosition(this._mapPane)); |
|
}, |
|
|
|
layerPointToContainerPoint: function (point) { // (Point) |
|
return point.add(L.DomUtil.getPosition(this._mapPane)); |
|
}, |
|
|
|
layerPointToLatLng: function (point) { // (Point) |
|
return this.unproject(point.add(this._initialTopLeftPoint)); |
|
}, |
|
|
|
latLngToLayerPoint: function (latlng) { // (LatLng) |
|
return this.project(latlng)._round()._subtract(this._initialTopLeftPoint); |
|
}, |
|
|
|
project: function (latlng, zoom) { // (LatLng[, Number]) -> Point |
|
zoom = (typeof zoom === 'undefined' ? this._zoom : zoom); |
|
return this.options.crs.latLngToPoint(latlng, this.options.scale(zoom)); |
|
}, |
|
|
|
unproject: function (point, zoom, unbounded) { // (Point[, Number, Boolean]) -> LatLng |
|
zoom = (typeof zoom === 'undefined' ? this._zoom : zoom); |
|
return this.options.crs.pointToLatLng(point, this.options.scale(zoom), unbounded); |
|
}, |
|
|
|
|
|
// private methods that modify map state |
|
|
|
_initLayout: function () { |
|
var container = this._container; |
|
|
|
container.innerHTML = ''; |
|
|
|
container.className += ' leaflet-container'; |
|
|
|
if (this.options.fadeAnimation) { |
|
container.className += ' leaflet-fade-anim'; |
|
} |
|
|
|
var position = L.DomUtil.getStyle(container, 'position'); |
|
if (position !== 'absolute' && position !== 'relative') { |
|
container.style.position = 'relative'; |
|
} |
|
|
|
this._initPanes(); |
|
|
|
if (this._initControlPos) { |
|
this._initControlPos(); |
|
} |
|
}, |
|
|
|
_initPanes: function () { |
|
var panes = this._panes = {}; |
|
|
|
this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container); |
|
|
|
this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane); |
|
this._objectsPane = panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane); |
|
|
|
panes.shadowPane = this._createPane('leaflet-shadow-pane'); |
|
panes.overlayPane = this._createPane('leaflet-overlay-pane'); |
|
panes.markerPane = this._createPane('leaflet-marker-pane'); |
|
panes.popupPane = this._createPane('leaflet-popup-pane'); |
|
}, |
|
|
|
_createPane: function (className, container) { |
|
return L.DomUtil.create('div', className, container || this._objectsPane); |
|
}, |
|
|
|
_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._initialTopLeftPoint = this._getNewTopLeftPoint(center); |
|
|
|
if (!preserveMapOffset) { |
|
L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0)); |
|
} else { |
|
var offset = L.DomUtil.getPosition(this._mapPane); |
|
this._initialTopLeftPoint._add(offset); |
|
} |
|
|
|
this._tileLayersToLoad = this._tileLayersNum; |
|
this.fire('viewreset', {hard: !preserveMapOffset}); |
|
|
|
this.fire('move'); |
|
if (zoomChanged || afterZoomAnim) { |
|
this.fire('zoomend'); |
|
} |
|
this.fire('moveend'); |
|
|
|
if (!this._loaded) { |
|
this._loaded = true; |
|
this.fire('load'); |
|
} |
|
}, |
|
|
|
_initLayers: function (layers) { |
|
this._layers = {}; |
|
|
|
var i, len; |
|
|
|
for (i = 0, len = layers.length; i < len; i++) { |
|
this.addLayer(layers[i]); |
|
} |
|
}, |
|
|
|
_initControls: function () { |
|
if (this.options.zoomControl) { |
|
this.addControl(new L.Control.Zoom()); |
|
} |
|
if (this.options.attributionControl) { |
|
this.attributionControl = new L.Control.Attribution(); |
|
this.addControl(this.attributionControl); |
|
} |
|
}, |
|
|
|
_rawPanBy: function (offset) { |
|
var mapPaneOffset = L.DomUtil.getPosition(this._mapPane); |
|
L.DomUtil.setPosition(this._mapPane, mapPaneOffset.subtract(offset)); |
|
}, |
|
|
|
|
|
// map events |
|
|
|
_initEvents: function () { |
|
L.DomEvent.addListener(this._container, 'click', this._onMouseClick, this); |
|
|
|
var events = ['dblclick', 'mousedown', 'mouseenter', 'mouseleave', 'mousemove', 'contextmenu']; |
|
|
|
var i, len; |
|
|
|
for (i = 0, len = events.length; i < len; i++) { |
|
L.DomEvent.addListener(this._container, events[i], this._fireMouseEvent, this); |
|
} |
|
|
|
if (this.options.trackResize) { |
|
L.DomEvent.addListener(window, 'resize', this._onResize, this); |
|
} |
|
}, |
|
|
|
_onResize: function () { |
|
L.Util.requestAnimFrame(this.invalidateSize, this, false, this._container); |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
if (!this._loaded || (this.dragging && this.dragging.moved())) { |
|
return; |
|
} |
|
|
|
this.fire('pre' + e.type); |
|
this._fireMouseEvent(e); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
if (!this._loaded) { |
|
return; |
|
} |
|
|
|
var type = e.type; |
|
type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type)); |
|
|
|
if (!this.hasEventListeners(type)) { |
|
return; |
|
} |
|
|
|
if (type === 'contextmenu') { |
|
L.DomEvent.preventDefault(e); |
|
} |
|
|
|
this.fire(type, { |
|
latlng: this.mouseEventToLatLng(e), |
|
layerPoint: this.mouseEventToLayerPoint(e) |
|
}); |
|
}, |
|
|
|
_initInteraction: function () { |
|
var handlers = { |
|
dragging: L.Map.Drag, |
|
touchZoom: L.Map.TouchZoom, |
|
doubleClickZoom: L.Map.DoubleClickZoom, |
|
scrollWheelZoom: L.Map.ScrollWheelZoom, |
|
boxZoom: L.Map.BoxZoom |
|
}; |
|
|
|
var i; |
|
for (i in handlers) { |
|
if (handlers.hasOwnProperty(i) && handlers[i]) { |
|
this[i] = new handlers[i](this); |
|
if (this.options[i]) { |
|
this[i].enable(); |
|
} |
|
// TODO move enabling to handler contructor |
|
} |
|
} |
|
}, |
|
|
|
_onTileLayerLoad: function () { |
|
// clear scaled tiles after all new tiles are loaded (for performance) |
|
this._tileLayersToLoad--; |
|
if (this._tileLayersNum && !this._tileLayersToLoad && this._tileBg) { |
|
clearTimeout(this._clearTileBgTimer); |
|
this._clearTileBgTimer = setTimeout(L.Util.bind(this._clearTileBg, this), 500); |
|
} |
|
}, |
|
|
|
|
|
// private methods for getting map state |
|
|
|
_getTopLeftPoint: function () { |
|
if (!this._loaded) { |
|
throw new Error('Set map center and zoom first.'); |
|
} |
|
|
|
var offset = L.DomUtil.getPosition(this._mapPane); |
|
return this._initialTopLeftPoint.subtract(offset); |
|
}, |
|
|
|
_getNewTopLeftPoint: function (center) { |
|
var viewHalf = this.getSize().divideBy(2); |
|
return this.project(center).subtract(viewHalf).round(); |
|
}, |
|
|
|
_limitZoom: function (zoom) { |
|
var min = this.getMinZoom(); |
|
var max = this.getMaxZoom(); |
|
return Math.max(min, Math.min(max, zoom)); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Projection.Mercator = { |
|
MAX_LATITUDE: 85.0840591556, |
|
|
|
R_MINOR: 6356752.3142, |
|
R_MAJOR: 6378137, |
|
|
|
project: function (/*LatLng*/ latlng) /*-> Point*/ { |
|
var d = L.LatLng.DEG_TO_RAD, |
|
max = this.MAX_LATITUDE, |
|
lat = Math.max(Math.min(max, latlng.lat), -max), |
|
r = this.R_MAJOR, |
|
r2 = this.R_MINOR, |
|
x = latlng.lng * d * r, |
|
y = lat * d, |
|
tmp = r2 / r, |
|
eccent = Math.sqrt(1.0 - tmp * tmp), |
|
con = eccent * Math.sin(y); |
|
|
|
con = Math.pow((1 - con) / (1 + con), eccent * 0.5); |
|
|
|
var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con; |
|
y = -r2 * Math.log(ts); |
|
|
|
return new L.Point(x, y); |
|
}, |
|
|
|
unproject: function (/*Point*/ point, /*Boolean*/ unbounded) /*-> LatLng*/ { |
|
var d = L.LatLng.RAD_TO_DEG, |
|
r = this.R_MAJOR, |
|
r2 = this.R_MINOR, |
|
lng = point.x * d / r, |
|
tmp = r2 / r, |
|
eccent = Math.sqrt(1 - (tmp * tmp)), |
|
ts = Math.exp(- point.y / r2), |
|
phi = (Math.PI / 2) - 2 * Math.atan(ts), |
|
numIter = 15, |
|
tol = 1e-7, |
|
i = numIter, |
|
dphi = 0.1, |
|
con; |
|
|
|
while ((Math.abs(dphi) > tol) && (--i > 0)) { |
|
con = eccent * Math.sin(phi); |
|
dphi = (Math.PI / 2) - 2 * Math.atan(ts * Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi; |
|
phi += dphi; |
|
} |
|
|
|
return new L.LatLng(phi * d, lng, unbounded); |
|
} |
|
}; |
|
|
|
|
|
|
|
L.CRS.EPSG3395 = L.Util.extend({}, L.CRS, { |
|
code: 'EPSG:3395', |
|
|
|
projection: L.Projection.Mercator, |
|
transformation: (function () { |
|
var m = L.Projection.Mercator, |
|
r = m.R_MAJOR, |
|
r2 = m.R_MINOR; |
|
|
|
return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5); |
|
}()) |
|
}); |
|
|
|
|
|
/* |
|
* L.TileLayer is used for standard xyz-numbered tile layers. |
|
*/ |
|
|
|
L.TileLayer = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
minZoom: 0, |
|
maxZoom: 18, |
|
tileSize: 256, |
|
subdomains: 'abc', |
|
errorTileUrl: '', |
|
attribution: '', |
|
opacity: 1, |
|
scheme: 'xyz', |
|
continuousWorld: false, |
|
noWrap: false, |
|
zoomOffset: 0, |
|
zoomReverse: false, |
|
|
|
unloadInvisibleTiles: L.Browser.mobile, |
|
updateWhenIdle: L.Browser.mobile, |
|
reuseTiles: false |
|
}, |
|
|
|
initialize: function (url, options, urlParams) { |
|
L.Util.setOptions(this, options); |
|
|
|
this._url = url; |
|
this._urlParams = urlParams; |
|
|
|
if (typeof this.options.subdomains === 'string') { |
|
this.options.subdomains = this.options.subdomains.split(''); |
|
} |
|
}, |
|
|
|
onAdd: function (map, insertAtTheBottom) { |
|
this._map = map; |
|
this._insertAtTheBottom = insertAtTheBottom; |
|
|
|
// create a container div for tiles |
|
this._initContainer(); |
|
|
|
// create an image to clone for tiles |
|
this._createTileProto(); |
|
|
|
// set up events |
|
map.on('viewreset', this._resetCallback, this); |
|
|
|
if (this.options.updateWhenIdle) { |
|
map.on('moveend', this._update, this); |
|
} else { |
|
this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this); |
|
map.on('move', this._limitedUpdate, this); |
|
} |
|
|
|
this._reset(); |
|
this._update(); |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._map.getPanes().tilePane.removeChild(this._container); |
|
this._container = null; |
|
|
|
this._map.off('viewreset', this._resetCallback, this); |
|
|
|
if (this.options.updateWhenIdle) { |
|
this._map.off('moveend', this._update, this); |
|
} else { |
|
this._map.off('move', this._limitedUpdate, this); |
|
} |
|
}, |
|
|
|
getAttribution: function () { |
|
return this.options.attribution; |
|
}, |
|
|
|
setOpacity: function (opacity) { |
|
this.options.opacity = opacity; |
|
|
|
this._setOpacity(opacity); |
|
|
|
// stupid webkit hack to force redrawing of tiles |
|
if (L.Browser.webkit) { |
|
for (var i in this._tiles) { |
|
if (this._tiles.hasOwnProperty(i)) { |
|
this._tiles[i].style.webkitTransform += ' translate(0,0)'; |
|
} |
|
} |
|
} |
|
}, |
|
|
|
_setOpacity: function (opacity) { |
|
if (opacity < 1) { |
|
L.DomUtil.setOpacity(this._container, opacity); |
|
} |
|
}, |
|
|
|
_initContainer: function () { |
|
var tilePane = this._map.getPanes().tilePane, |
|
first = tilePane.firstChild; |
|
|
|
if (!this._container || tilePane.empty) { |
|
this._container = L.DomUtil.create('div', 'leaflet-layer'); |
|
|
|
if (this._insertAtTheBottom && first) { |
|
tilePane.insertBefore(this._container, first); |
|
} else { |
|
tilePane.appendChild(this._container); |
|
} |
|
|
|
this._setOpacity(this.options.opacity); |
|
} |
|
}, |
|
|
|
_resetCallback: function (e) { |
|
this._reset(e.hard); |
|
}, |
|
|
|
_reset: function (clearOldContainer) { |
|
var key; |
|
for (key in this._tiles) { |
|
if (this._tiles.hasOwnProperty(key)) { |
|
this.fire("tileunload", {tile: this._tiles[key]}); |
|
} |
|
} |
|
this._tiles = {}; |
|
|
|
if (this.options.reuseTiles) { |
|
this._unusedTiles = []; |
|
} |
|
|
|
if (clearOldContainer && this._container) { |
|
this._container.innerHTML = ""; |
|
} |
|
this._initContainer(); |
|
}, |
|
|
|
_update: function () { |
|
var bounds = this._map.getPixelBounds(), |
|
zoom = this._map.getZoom(), |
|
tileSize = this.options.tileSize; |
|
|
|
if (zoom > this.options.maxZoom || zoom < this.options.minZoom) { |
|
return; |
|
} |
|
|
|
var nwTilePoint = new L.Point( |
|
Math.floor(bounds.min.x / tileSize), |
|
Math.floor(bounds.min.y / tileSize)), |
|
seTilePoint = new L.Point( |
|
Math.floor(bounds.max.x / tileSize), |
|
Math.floor(bounds.max.y / tileSize)), |
|
tileBounds = new L.Bounds(nwTilePoint, seTilePoint); |
|
|
|
this._addTilesFromCenterOut(tileBounds); |
|
|
|
if (this.options.unloadInvisibleTiles || this.options.reuseTiles) { |
|
this._removeOtherTiles(tileBounds); |
|
} |
|
}, |
|
|
|
_addTilesFromCenterOut: function (bounds) { |
|
var queue = [], |
|
center = bounds.getCenter(); |
|
|
|
for (var j = bounds.min.y; j <= bounds.max.y; j++) { |
|
for (var i = bounds.min.x; i <= bounds.max.x; i++) { |
|
if ((i + ':' + j) in this._tiles) { |
|
continue; |
|
} |
|
queue.push(new L.Point(i, j)); |
|
} |
|
} |
|
|
|
// load tiles in order of their distance to center |
|
queue.sort(function (a, b) { |
|
return a.distanceTo(center) - b.distanceTo(center); |
|
}); |
|
|
|
var fragment = document.createDocumentFragment(); |
|
|
|
this._tilesToLoad = queue.length; |
|
for (var k = 0, len = this._tilesToLoad; k < len; k++) { |
|
this._addTile(queue[k], fragment); |
|
} |
|
|
|
this._container.appendChild(fragment); |
|
}, |
|
|
|
_removeOtherTiles: function (bounds) { |
|
var kArr, x, y, key, tile; |
|
|
|
for (key in this._tiles) { |
|
if (this._tiles.hasOwnProperty(key)) { |
|
kArr = key.split(':'); |
|
x = parseInt(kArr[0], 10); |
|
y = parseInt(kArr[1], 10); |
|
|
|
// remove tile if it's out of bounds |
|
if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) { |
|
|
|
tile = this._tiles[key]; |
|
this.fire("tileunload", {tile: tile, url: tile.src}); |
|
|
|
if (tile.parentNode === this._container) { |
|
this._container.removeChild(tile); |
|
} |
|
if (this.options.reuseTiles) { |
|
this._unusedTiles.push(this._tiles[key]); |
|
} |
|
tile.src = 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='; |
|
|
|
delete this._tiles[key]; |
|
} |
|
} |
|
} |
|
}, |
|
|
|
_addTile: function (tilePoint, container) { |
|
var tilePos = this._getTilePos(tilePoint), |
|
zoom = this._map.getZoom(), |
|
key = tilePoint.x + ':' + tilePoint.y, |
|
tileLimit = Math.pow(2, this._getOffsetZoom(zoom)); |
|
|
|
// wrap tile coordinates |
|
if (!this.options.continuousWorld) { |
|
if (!this.options.noWrap) { |
|
tilePoint.x = ((tilePoint.x % tileLimit) + tileLimit) % tileLimit; |
|
} else if (tilePoint.x < 0 || tilePoint.x >= tileLimit) { |
|
this._tilesToLoad--; |
|
return; |
|
} |
|
|
|
if (tilePoint.y < 0 || tilePoint.y >= tileLimit) { |
|
this._tilesToLoad--; |
|
return; |
|
} |
|
} |
|
|
|
// get unused tile - or create a new tile |
|
var tile = this._getTile(); |
|
L.DomUtil.setPosition(tile, tilePos); |
|
|
|
this._tiles[key] = tile; |
|
|
|
if (this.options.scheme === 'tms') { |
|
tilePoint.y = tileLimit - tilePoint.y - 1; |
|
} |
|
|
|
this._loadTile(tile, tilePoint, zoom); |
|
|
|
container.appendChild(tile); |
|
}, |
|
|
|
_getOffsetZoom: function (zoom) { |
|
zoom = this.options.zoomReverse ? this.options.maxZoom - zoom : zoom; |
|
return zoom + this.options.zoomOffset; |
|
}, |
|
|
|
_getTilePos: function (tilePoint) { |
|
var origin = this._map.getPixelOrigin(), |
|
tileSize = this.options.tileSize; |
|
|
|
return tilePoint.multiplyBy(tileSize).subtract(origin); |
|
}, |
|
|
|
// image-specific code (override to implement e.g. Canvas or SVG tile layer) |
|
|
|
getTileUrl: function (tilePoint, zoom) { |
|
var subdomains = this.options.subdomains, |
|
s = this.options.subdomains[(tilePoint.x + tilePoint.y) % subdomains.length]; |
|
|
|
return L.Util.template(this._url, L.Util.extend({ |
|
s: s, |
|
z: this._getOffsetZoom(zoom), |
|
x: tilePoint.x, |
|
y: tilePoint.y |
|
}, this._urlParams)); |
|
}, |
|
|
|
_createTileProto: function () { |
|
this._tileImg = L.DomUtil.create('img', 'leaflet-tile'); |
|
this._tileImg.galleryimg = 'no'; |
|
|
|
var tileSize = this.options.tileSize; |
|
this._tileImg.style.width = tileSize + 'px'; |
|
this._tileImg.style.height = tileSize + 'px'; |
|
}, |
|
|
|
_getTile: function () { |
|
if (this.options.reuseTiles && this._unusedTiles.length > 0) { |
|
var tile = this._unusedTiles.pop(); |
|
this._resetTile(tile); |
|
return tile; |
|
} |
|
return this._createTile(); |
|
}, |
|
|
|
_resetTile: function (tile) { |
|
// Override if data stored on a tile needs to be cleaned up before reuse |
|
}, |
|
|
|
_createTile: function () { |
|
var tile = this._tileImg.cloneNode(false); |
|
tile.onselectstart = tile.onmousemove = L.Util.falseFn; |
|
return tile; |
|
}, |
|
|
|
_loadTile: function (tile, tilePoint, zoom) { |
|
tile._layer = this; |
|
tile.onload = this._tileOnLoad; |
|
tile.onerror = this._tileOnError; |
|
tile.src = this.getTileUrl(tilePoint, zoom); |
|
}, |
|
|
|
_tileOnLoad: function (e) { |
|
var layer = this._layer; |
|
|
|
this.className += ' leaflet-tile-loaded'; |
|
|
|
layer.fire('tileload', {tile: this, url: this.src}); |
|
|
|
layer._tilesToLoad--; |
|
if (!layer._tilesToLoad) { |
|
layer.fire('load'); |
|
} |
|
}, |
|
|
|
_tileOnError: function (e) { |
|
var layer = this._layer; |
|
|
|
layer.fire('tileerror', {tile: this, url: this.src}); |
|
|
|
var newUrl = layer.options.errorTileUrl; |
|
if (newUrl) { |
|
this.src = newUrl; |
|
} |
|
} |
|
}); |
|
|
|
|
|
L.TileLayer.WMS = L.TileLayer.extend({ |
|
defaultWmsParams: { |
|
service: 'WMS', |
|
request: 'GetMap', |
|
version: '1.1.1', |
|
layers: '', |
|
styles: '', |
|
format: 'image/jpeg', |
|
transparent: false |
|
}, |
|
|
|
initialize: function (/*String*/ url, /*Object*/ options) { |
|
this._url = url; |
|
|
|
this.wmsParams = L.Util.extend({}, this.defaultWmsParams); |
|
this.wmsParams.width = this.wmsParams.height = this.options.tileSize; |
|
|
|
for (var i in options) { |
|
// all keys that are not TileLayer options go to WMS params |
|
if (!this.options.hasOwnProperty(i)) { |
|
this.wmsParams[i] = options[i]; |
|
} |
|
} |
|
|
|
L.Util.setOptions(this, options); |
|
}, |
|
|
|
onAdd: function (map) { |
|
var projectionKey = (parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs'); |
|
this.wmsParams[projectionKey] = map.options.crs.code; |
|
|
|
L.TileLayer.prototype.onAdd.call(this, map); |
|
}, |
|
|
|
getTileUrl: function (/*Point*/ tilePoint, /*Number*/ zoom)/*-> String*/ { |
|
var tileSize = this.options.tileSize, |
|
nwPoint = tilePoint.multiplyBy(tileSize), |
|
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)), |
|
nwMap = this._map.unproject(nwPoint, this._zoom, true), |
|
seMap = this._map.unproject(sePoint, this._zoom, true), |
|
nw = this._map.options.crs.project(nwMap), |
|
se = this._map.options.crs.project(seMap), |
|
bbox = [nw.x, se.y, se.x, nw.y].join(','); |
|
|
|
return this._url + L.Util.getParamString(this.wmsParams) + "&bbox=" + bbox; |
|
} |
|
}); |
|
|
|
|
|
L.TileLayer.Canvas = L.TileLayer.extend({ |
|
options: { |
|
async: false |
|
}, |
|
|
|
initialize: function (options) { |
|
L.Util.setOptions(this, options); |
|
}, |
|
|
|
redraw: function () { |
|
for (var i in this._tiles) { |
|
var tile = this._tiles[i]; |
|
this._redrawTile(tile); |
|
} |
|
}, |
|
|
|
_redrawTile: function (tile) { |
|
this.drawTile(tile, tile._tilePoint, tile._zoom); |
|
}, |
|
|
|
_createTileProto: function () { |
|
this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile'); |
|
|
|
var tileSize = this.options.tileSize; |
|
this._canvasProto.width = tileSize; |
|
this._canvasProto.height = tileSize; |
|
}, |
|
|
|
_createTile: function () { |
|
var tile = this._canvasProto.cloneNode(false); |
|
tile.onselectstart = tile.onmousemove = L.Util.falseFn; |
|
return tile; |
|
}, |
|
|
|
_loadTile: function (tile, tilePoint, zoom) { |
|
tile._layer = this; |
|
tile._tilePoint = tilePoint; |
|
tile._zoom = zoom; |
|
|
|
this.drawTile(tile, tilePoint, zoom); |
|
|
|
if (!this.options.async) { |
|
this.tileDrawn(tile); |
|
} |
|
}, |
|
|
|
drawTile: function (tile, tilePoint, zoom) { |
|
// override with rendering code |
|
}, |
|
|
|
tileDrawn: function (tile) { |
|
this._tileOnLoad.call(tile); |
|
} |
|
}); |
|
|
|
|
|
L.ImageOverlay = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
initialize: function (/*String*/ url, /*LatLngBounds*/ bounds) { |
|
this._url = url; |
|
this._bounds = bounds; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
if (!this._image) { |
|
this._initImage(); |
|
} |
|
|
|
map.getPanes().overlayPane.appendChild(this._image); |
|
|
|
map.on('viewreset', this._reset, this); |
|
this._reset(); |
|
}, |
|
|
|
onRemove: function (map) { |
|
map.getPanes().overlayPane.removeChild(this._image); |
|
map.off('viewreset', this._reset, this); |
|
}, |
|
|
|
_initImage: function () { |
|
this._image = L.DomUtil.create('img', 'leaflet-image-layer'); |
|
|
|
this._image.style.visibility = 'hidden'; |
|
//TODO opacity option |
|
|
|
//TODO createImage util method to remove duplication |
|
L.Util.extend(this._image, { |
|
galleryimg: 'no', |
|
onselectstart: L.Util.falseFn, |
|
onmousemove: L.Util.falseFn, |
|
onload: L.Util.bind(this._onImageLoad, this), |
|
src: this._url |
|
}); |
|
}, |
|
|
|
_reset: function () { |
|
var topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()), |
|
bottomRight = this._map.latLngToLayerPoint(this._bounds.getSouthEast()), |
|
size = bottomRight.subtract(topLeft); |
|
|
|
L.DomUtil.setPosition(this._image, topLeft); |
|
|
|
this._image.style.width = size.x + 'px'; |
|
this._image.style.height = size.y + 'px'; |
|
}, |
|
|
|
_onImageLoad: function () { |
|
this._image.style.visibility = ''; |
|
this.fire('load'); |
|
} |
|
}); |
|
|
|
|
|
L.Icon = L.Class.extend({ |
|
iconUrl: L.ROOT_URL + 'images/marker.png', |
|
shadowUrl: L.ROOT_URL + 'images/marker-shadow.png', |
|
|
|
iconSize: new L.Point(25, 41), |
|
shadowSize: new L.Point(41, 41), |
|
|
|
iconAnchor: new L.Point(13, 41), |
|
popupAnchor: new L.Point(0, -33), |
|
|
|
initialize: function (iconUrl) { |
|
if (iconUrl) { |
|
this.iconUrl = iconUrl; |
|
} |
|
}, |
|
|
|
createIcon: function () { |
|
return this._createIcon('icon'); |
|
}, |
|
|
|
createShadow: function () { |
|
return this._createIcon('shadow'); |
|
}, |
|
|
|
_createIcon: function (name) { |
|
var size = this[name + 'Size'], |
|
src = this[name + 'Url']; |
|
if (!src && name === 'shadow') { |
|
return null; |
|
} |
|
|
|
var img; |
|
if (!src) { |
|
img = this._createDiv(); |
|
} |
|
else { |
|
img = this._createImg(src); |
|
} |
|
|
|
img.className = 'leaflet-marker-' + name; |
|
|
|
img.style.marginLeft = (-this.iconAnchor.x) + 'px'; |
|
img.style.marginTop = (-this.iconAnchor.y) + 'px'; |
|
|
|
if (size) { |
|
img.style.width = size.x + 'px'; |
|
img.style.height = size.y + 'px'; |
|
} |
|
|
|
return img; |
|
}, |
|
|
|
_createImg: function (src) { |
|
var el; |
|
if (!L.Browser.ie6) { |
|
el = document.createElement('img'); |
|
el.src = src; |
|
} else { |
|
el = document.createElement('div'); |
|
el.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")'; |
|
} |
|
return el; |
|
}, |
|
|
|
_createDiv: function () { |
|
return document.createElement('div'); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Marker is used to display clickable/draggable icons on the map. |
|
*/ |
|
|
|
L.Marker = L.Class.extend({ |
|
|
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
icon: new L.Icon(), |
|
title: '', |
|
clickable: true, |
|
draggable: false, |
|
zIndexOffset: 0 |
|
}, |
|
|
|
initialize: function (latlng, options) { |
|
L.Util.setOptions(this, options); |
|
this._latlng = latlng; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
this._initIcon(); |
|
|
|
map.on('viewreset', this._reset, this); |
|
this._reset(); |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._removeIcon(); |
|
|
|
// TODO move to Marker.Popup.js |
|
if (this.closePopup) { |
|
this.closePopup(); |
|
} |
|
|
|
this._map = null; |
|
|
|
map.off('viewreset', this._reset, this); |
|
}, |
|
|
|
getLatLng: function () { |
|
return this._latlng; |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = latlng; |
|
if (this._icon) { |
|
this._reset(); |
|
|
|
if (this._popup) { |
|
this._popup.setLatLng(this._latlng); |
|
} |
|
} |
|
}, |
|
|
|
setZIndexOffset: function (offset) { |
|
this.options.zIndexOffset = offset; |
|
if (this._icon) { |
|
this._reset(); |
|
} |
|
}, |
|
|
|
setIcon: function (icon) { |
|
if (this._map) { |
|
this._removeIcon(); |
|
} |
|
|
|
this.options.icon = icon; |
|
|
|
if (this._map) { |
|
this._initIcon(); |
|
this._reset(); |
|
} |
|
}, |
|
|
|
_initIcon: function () { |
|
if (!this._icon) { |
|
this._icon = this.options.icon.createIcon(); |
|
|
|
if (this.options.title) { |
|
this._icon.title = this.options.title; |
|
} |
|
|
|
this._initInteraction(); |
|
} |
|
if (!this._shadow) { |
|
this._shadow = this.options.icon.createShadow(); |
|
} |
|
|
|
this._map._panes.markerPane.appendChild(this._icon); |
|
if (this._shadow) { |
|
this._map._panes.shadowPane.appendChild(this._shadow); |
|
} |
|
}, |
|
|
|
_removeIcon: function () { |
|
this._map._panes.markerPane.removeChild(this._icon); |
|
if (this._shadow) { |
|
this._map._panes.shadowPane.removeChild(this._shadow); |
|
} |
|
this._icon = this._shadow = null; |
|
}, |
|
|
|
_reset: function () { |
|
var pos = this._map.latLngToLayerPoint(this._latlng).round(); |
|
|
|
L.DomUtil.setPosition(this._icon, pos); |
|
if (this._shadow) { |
|
L.DomUtil.setPosition(this._shadow, pos); |
|
} |
|
|
|
this._icon.style.zIndex = pos.y + this.options.zIndexOffset; |
|
}, |
|
|
|
_initInteraction: function () { |
|
if (this.options.clickable) { |
|
this._icon.className += ' leaflet-clickable'; |
|
|
|
L.DomEvent.addListener(this._icon, 'click', this._onMouseClick, this); |
|
|
|
var events = ['dblclick', 'mousedown', 'mouseover', 'mouseout']; |
|
for (var i = 0; i < events.length; i++) { |
|
L.DomEvent.addListener(this._icon, events[i], this._fireMouseEvent, this); |
|
} |
|
} |
|
|
|
if (L.Handler.MarkerDrag) { |
|
this.dragging = new L.Handler.MarkerDrag(this); |
|
|
|
if (this.options.draggable) { |
|
this.dragging.enable(); |
|
} |
|
} |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
L.DomEvent.stopPropagation(e); |
|
if (this.dragging && this.dragging.moved()) { return; } |
|
this.fire(e.type); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
this.fire(e.type); |
|
L.DomEvent.stopPropagation(e); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Popup = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
minWidth: 50, |
|
maxWidth: 300, |
|
autoPan: true, |
|
closeButton: true, |
|
offset: new L.Point(0, 2), |
|
autoPanPadding: new L.Point(5, 5), |
|
className: '' |
|
}, |
|
|
|
initialize: function (options, source) { |
|
L.Util.setOptions(this, options); |
|
|
|
this._source = source; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
if (!this._container) { |
|
this._initLayout(); |
|
} |
|
this._updateContent(); |
|
|
|
this._container.style.opacity = '0'; |
|
|
|
this._map._panes.popupPane.appendChild(this._container); |
|
this._map.on('viewreset', this._updatePosition, this); |
|
|
|
if (this._map.options.closePopupOnClick) { |
|
this._map.on('preclick', this._close, this); |
|
} |
|
|
|
this._update(); |
|
|
|
this._container.style.opacity = '1'; //TODO fix ugly opacity hack |
|
|
|
this._opened = true; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map._panes.popupPane.removeChild(this._container); |
|
L.Util.falseFn(this._container.offsetWidth); |
|
|
|
map.off('viewreset', this._updatePosition, this); |
|
map.off('click', this._close, this); |
|
|
|
this._container.style.opacity = '0'; |
|
|
|
this._opened = false; |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = latlng; |
|
if (this._opened) { |
|
this._update(); |
|
} |
|
return this; |
|
}, |
|
|
|
setContent: function (content) { |
|
this._content = content; |
|
if (this._opened) { |
|
this._update(); |
|
} |
|
return this; |
|
}, |
|
|
|
_close: function () { |
|
if (this._opened) { |
|
this._map.closePopup(); |
|
} |
|
}, |
|
|
|
_initLayout: function () { |
|
this._container = L.DomUtil.create('div', 'leaflet-popup ' + this.options.className); |
|
|
|
if (this.options.closeButton) { |
|
this._closeButton = L.DomUtil.create('a', 'leaflet-popup-close-button', this._container); |
|
this._closeButton.href = '#close'; |
|
L.DomEvent.addListener(this._closeButton, 'click', this._onCloseButtonClick, this); |
|
} |
|
|
|
this._wrapper = L.DomUtil.create('div', 'leaflet-popup-content-wrapper', this._container); |
|
L.DomEvent.disableClickPropagation(this._wrapper); |
|
this._contentNode = L.DomUtil.create('div', 'leaflet-popup-content', this._wrapper); |
|
|
|
this._tipContainer = L.DomUtil.create('div', 'leaflet-popup-tip-container', this._container); |
|
this._tip = L.DomUtil.create('div', 'leaflet-popup-tip', this._tipContainer); |
|
}, |
|
|
|
_update: function () { |
|
this._container.style.visibility = 'hidden'; |
|
|
|
this._updateContent(); |
|
this._updateLayout(); |
|
this._updatePosition(); |
|
|
|
this._container.style.visibility = ''; |
|
|
|
this._adjustPan(); |
|
}, |
|
|
|
_updateContent: function () { |
|
if (!this._content) { |
|
return; |
|
} |
|
|
|
if (typeof this._content === 'string') { |
|
this._contentNode.innerHTML = this._content; |
|
} else { |
|
this._contentNode.innerHTML = ''; |
|
this._contentNode.appendChild(this._content); |
|
} |
|
}, |
|
|
|
_updateLayout: function () { |
|
this._container.style.width = ''; |
|
this._container.style.whiteSpace = 'nowrap'; |
|
|
|
var width = this._container.offsetWidth; |
|
|
|
this._container.style.width = (width > this.options.maxWidth ? |
|
this.options.maxWidth : (width < this.options.minWidth ? this.options.minWidth : width)) + 'px'; |
|
this._container.style.whiteSpace = ''; |
|
|
|
this._containerWidth = this._container.offsetWidth; |
|
}, |
|
|
|
_updatePosition: function () { |
|
var pos = this._map.latLngToLayerPoint(this._latlng); |
|
|
|
this._containerBottom = -pos.y - this.options.offset.y; |
|
this._containerLeft = pos.x - Math.round(this._containerWidth / 2) + this.options.offset.x; |
|
|
|
this._container.style.bottom = this._containerBottom + 'px'; |
|
this._container.style.left = this._containerLeft + 'px'; |
|
}, |
|
|
|
_adjustPan: function () { |
|
if (!this.options.autoPan) { |
|
return; |
|
} |
|
|
|
var containerHeight = this._container.offsetHeight, |
|
layerPos = new L.Point( |
|
this._containerLeft, |
|
-containerHeight - this._containerBottom), |
|
containerPos = this._map.layerPointToContainerPoint(layerPos), |
|
adjustOffset = new L.Point(0, 0), |
|
padding = this.options.autoPanPadding, |
|
size = this._map.getSize(); |
|
|
|
if (containerPos.x < 0) { |
|
adjustOffset.x = containerPos.x - padding.x; |
|
} |
|
if (containerPos.x + this._containerWidth > size.x) { |
|
adjustOffset.x = containerPos.x + this._containerWidth - size.x + padding.x; |
|
} |
|
if (containerPos.y < 0) { |
|
adjustOffset.y = containerPos.y - padding.y; |
|
} |
|
if (containerPos.y + containerHeight > size.y) { |
|
adjustOffset.y = containerPos.y + containerHeight - size.y + padding.y; |
|
} |
|
|
|
if (adjustOffset.x || adjustOffset.y) { |
|
this._map.panBy(adjustOffset); |
|
} |
|
}, |
|
|
|
_onCloseButtonClick: function (e) { |
|
this._close(); |
|
L.DomEvent.stop(e); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Popup extension to L.Marker, adding openPopup & bindPopup methods. |
|
*/ |
|
|
|
L.Marker.include({ |
|
openPopup: function () { |
|
this._popup.setLatLng(this._latlng); |
|
if (this._map) { |
|
this._map.openPopup(this._popup); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
closePopup: function () { |
|
if (this._popup) { |
|
this._popup._close(); |
|
} |
|
return this; |
|
}, |
|
|
|
bindPopup: function (content, options) { |
|
options = L.Util.extend({offset: this.options.icon.popupAnchor}, options); |
|
|
|
if (!this._popup) { |
|
this.on('click', this.openPopup, this); |
|
} |
|
|
|
this._popup = new L.Popup(options, this); |
|
this._popup.setContent(content); |
|
|
|
return this; |
|
}, |
|
|
|
unbindPopup: function () { |
|
if (this._popup) { |
|
this._popup = null; |
|
this.off('click', this.openPopup); |
|
} |
|
return this; |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Map.include({ |
|
openPopup: function (popup) { |
|
this.closePopup(); |
|
this._popup = popup; |
|
this.addLayer(popup); |
|
this.fire('popupopen', { popup: this._popup }); |
|
|
|
return this; |
|
}, |
|
|
|
closePopup: function () { |
|
if (this._popup) { |
|
this.removeLayer(this._popup); |
|
this.fire('popupclose', { popup: this._popup }); |
|
this._popup = null; |
|
} |
|
return this; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.LayerGroup is a class to combine several layers so you can manipulate the group (e.g. add/remove it) as one layer. |
|
*/ |
|
|
|
L.LayerGroup = L.Class.extend({ |
|
initialize: function (layers) { |
|
this._layers = {}; |
|
|
|
if (layers) { |
|
for (var i = 0, len = layers.length; i < len; i++) { |
|
this.addLayer(layers[i]); |
|
} |
|
} |
|
}, |
|
|
|
addLayer: function (layer) { |
|
var id = L.Util.stamp(layer); |
|
this._layers[id] = layer; |
|
|
|
if (this._map) { |
|
this._map.addLayer(layer); |
|
} |
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.Util.stamp(layer); |
|
delete this._layers[id]; |
|
|
|
if (this._map) { |
|
this._map.removeLayer(layer); |
|
} |
|
return this; |
|
}, |
|
|
|
clearLayers: function () { |
|
this._iterateLayers(this.removeLayer, this); |
|
return this; |
|
}, |
|
|
|
invoke: function (methodName) { |
|
var args = Array.prototype.slice.call(arguments, 1), |
|
i, layer; |
|
|
|
for (i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
layer = this._layers[i]; |
|
|
|
if (layer[methodName]) { |
|
layer[methodName].apply(layer, args); |
|
} |
|
} |
|
} |
|
return this; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
this._iterateLayers(map.addLayer, map); |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._iterateLayers(map.removeLayer, map); |
|
delete this._map; |
|
}, |
|
|
|
_iterateLayers: function (method, context) { |
|
for (var i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
method.call(context, this._layers[i]); |
|
} |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and bindPopup method shared between a group of layers. |
|
*/ |
|
|
|
L.FeatureGroup = L.LayerGroup.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
addLayer: function (layer) { |
|
this._initEvents(layer); |
|
L.LayerGroup.prototype.addLayer.call(this, layer); |
|
|
|
if (this._popupContent && layer.bindPopup) { |
|
layer.bindPopup(this._popupContent); |
|
} |
|
}, |
|
|
|
bindPopup: function (content) { |
|
this._popupContent = content; |
|
|
|
return this.invoke('bindPopup', content); |
|
}, |
|
|
|
setStyle: function (style) { |
|
return this.invoke('setStyle', style); |
|
}, |
|
|
|
_events: ['click', 'dblclick', 'mouseover', 'mouseout'], |
|
|
|
_initEvents: function (layer) { |
|
for (var i = 0, len = this._events.length; i < len; i++) { |
|
layer.on(this._events[i], this._propagateEvent, this); |
|
} |
|
}, |
|
|
|
_propagateEvent: function (e) { |
|
e.layer = e.target; |
|
e.target = this; |
|
this.fire(e.type, e); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Path is a base class for rendering vector paths on a map. It's inherited by Polyline, Circle, etc. |
|
*/ |
|
|
|
L.Path = L.Class.extend({ |
|
includes: [L.Mixin.Events], |
|
|
|
statics: { |
|
// how much to extend the clip area around the map view |
|
// (relative to its size, e.g. 0.5 is half the screen in each direction) |
|
CLIP_PADDING: 0.5 |
|
}, |
|
|
|
options: { |
|
stroke: true, |
|
color: '#0033ff', |
|
weight: 5, |
|
opacity: 0.5, |
|
|
|
fill: false, |
|
fillColor: null, //same as color by default |
|
fillOpacity: 0.2, |
|
|
|
clickable: true, |
|
|
|
// TODO remove this, as all paths now update on moveend |
|
updateOnMoveEnd: true |
|
}, |
|
|
|
initialize: function (options) { |
|
L.Util.setOptions(this, options); |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
this._initElements(); |
|
this._initEvents(); |
|
this.projectLatlngs(); |
|
this._updatePath(); |
|
|
|
map.on('viewreset', this.projectLatlngs, this); |
|
|
|
this._updateTrigger = this.options.updateOnMoveEnd ? 'moveend' : 'viewreset'; |
|
map.on(this._updateTrigger, this._updatePath, this); |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._map = null; |
|
|
|
map._pathRoot.removeChild(this._container); |
|
|
|
map.off('viewreset', this.projectLatlngs, this); |
|
map.off(this._updateTrigger, this._updatePath, this); |
|
}, |
|
|
|
projectLatlngs: function () { |
|
// do all projection stuff here |
|
}, |
|
|
|
setStyle: function (style) { |
|
L.Util.setOptions(this, style); |
|
if (this._container) { |
|
this._updateStyle(); |
|
} |
|
return this; |
|
}, |
|
|
|
_redraw: function () { |
|
if (this._map) { |
|
this.projectLatlngs(); |
|
this._updatePath(); |
|
} |
|
} |
|
}); |
|
|
|
L.Map.include({ |
|
_updatePathViewport: function () { |
|
var p = L.Path.CLIP_PADDING, |
|
size = this.getSize(), |
|
//TODO this._map._getMapPanePos() |
|
panePos = L.DomUtil.getPosition(this._mapPane), |
|
min = panePos.multiplyBy(-1).subtract(size.multiplyBy(p)), |
|
max = min.add(size.multiplyBy(1 + p * 2)); |
|
|
|
this._pathViewport = new L.Bounds(min, max); |
|
} |
|
}); |
|
|
|
|
|
L.Path.SVG_NS = 'http://www.w3.org/2000/svg'; |
|
|
|
L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect); |
|
|
|
L.Path = L.Path.extend({ |
|
statics: { |
|
SVG: L.Browser.svg, |
|
_createElement: function (name) { |
|
return document.createElementNS(L.Path.SVG_NS, name); |
|
} |
|
}, |
|
|
|
getPathString: function () { |
|
// form path string here |
|
}, |
|
|
|
_initElements: function () { |
|
this._map._initPathRoot(); |
|
this._initPath(); |
|
this._initStyle(); |
|
}, |
|
|
|
_initPath: function () { |
|
this._container = L.Path._createElement('g'); |
|
|
|
this._path = L.Path._createElement('path'); |
|
this._container.appendChild(this._path); |
|
|
|
this._map._pathRoot.appendChild(this._container); |
|
}, |
|
|
|
_initStyle: function () { |
|
if (this.options.stroke) { |
|
this._path.setAttribute('stroke-linejoin', 'round'); |
|
this._path.setAttribute('stroke-linecap', 'round'); |
|
} |
|
if (this.options.fill) { |
|
this._path.setAttribute('fill-rule', 'evenodd'); |
|
} else { |
|
this._path.setAttribute('fill', 'none'); |
|
} |
|
this._updateStyle(); |
|
}, |
|
|
|
_updateStyle: function () { |
|
if (this.options.stroke) { |
|
this._path.setAttribute('stroke', this.options.color); |
|
this._path.setAttribute('stroke-opacity', this.options.opacity); |
|
this._path.setAttribute('stroke-width', this.options.weight); |
|
} |
|
if (this.options.fill) { |
|
this._path.setAttribute('fill', this.options.fillColor || this.options.color); |
|
this._path.setAttribute('fill-opacity', this.options.fillOpacity); |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
var str = this.getPathString(); |
|
if (!str) { |
|
// fix webkit empty string parsing bug |
|
str = 'M0 0'; |
|
} |
|
this._path.setAttribute('d', str); |
|
}, |
|
|
|
// TODO remove duplication with L.Map |
|
_initEvents: function () { |
|
if (this.options.clickable) { |
|
if (!L.Browser.vml) { |
|
this._path.setAttribute('class', 'leaflet-clickable'); |
|
} |
|
|
|
L.DomEvent.addListener(this._container, 'click', this._onMouseClick, this); |
|
|
|
var events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'mousemove']; |
|
for (var i = 0; i < events.length; i++) { |
|
L.DomEvent.addListener(this._container, events[i], this._fireMouseEvent, this); |
|
} |
|
} |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
if (this._map.dragging && this._map.dragging.moved()) { |
|
return; |
|
} |
|
this._fireMouseEvent(e); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
if (!this.hasEventListeners(e.type)) { |
|
return; |
|
} |
|
this.fire(e.type, { |
|
latlng: this._map.mouseEventToLatLng(e), |
|
layerPoint: this._map.mouseEventToLayerPoint(e) |
|
}); |
|
L.DomEvent.stopPropagation(e); |
|
} |
|
}); |
|
|
|
L.Map.include({ |
|
_initPathRoot: function () { |
|
if (!this._pathRoot) { |
|
this._pathRoot = L.Path._createElement('svg'); |
|
this._panes.overlayPane.appendChild(this._pathRoot); |
|
|
|
this.on('moveend', this._updateSvgViewport); |
|
this._updateSvgViewport(); |
|
} |
|
}, |
|
|
|
_updateSvgViewport: function () { |
|
this._updatePathViewport(); |
|
|
|
var vp = this._pathViewport, |
|
min = vp.min, |
|
max = vp.max, |
|
width = max.x - min.x, |
|
height = max.y - min.y, |
|
root = this._pathRoot, |
|
pane = this._panes.overlayPane; |
|
|
|
// Hack to make flicker on drag end on mobile webkit less irritating |
|
// Unfortunately I haven't found a good workaround for this yet |
|
if (L.Browser.webkit) { |
|
pane.removeChild(root); |
|
} |
|
|
|
L.DomUtil.setPosition(root, min); |
|
root.setAttribute('width', width); |
|
root.setAttribute('height', height); |
|
root.setAttribute('viewBox', [min.x, min.y, width, height].join(' ')); |
|
|
|
if (L.Browser.webkit) { |
|
pane.appendChild(root); |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Popup extension to L.Path (polylines, polygons, circles), adding bindPopup method. |
|
*/ |
|
|
|
L.Path.include({ |
|
bindPopup: function (content, options) { |
|
if (!this._popup || this._popup.options !== options) { |
|
this._popup = new L.Popup(options, this); |
|
} |
|
this._popup.setContent(content); |
|
|
|
if (!this._openPopupAdded) { |
|
this.on('click', this._openPopup, this); |
|
this._openPopupAdded = true; |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
_openPopup: function (e) { |
|
this._popup.setLatLng(e.latlng); |
|
this._map.openPopup(this._popup); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Vector rendering for IE6-8 through VML. |
|
* Thanks to Dmitry Baranovsky and his Raphael library for inspiration! |
|
*/ |
|
|
|
L.Browser.vml = (function () { |
|
var d = document.createElement('div'), s; |
|
d.innerHTML = '<v:shape adj="1"/>'; |
|
s = d.firstChild; |
|
s.style.behavior = 'url(#default#VML)'; |
|
|
|
return (s && (typeof s.adj === 'object')); |
|
}()); |
|
|
|
L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({ |
|
statics: { |
|
VML: true, |
|
CLIP_PADDING: 0.02, |
|
_createElement: (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">'); |
|
}; |
|
} |
|
}()) |
|
}, |
|
|
|
_initPath: function () { |
|
this._container = L.Path._createElement('shape'); |
|
this._container.className += ' leaflet-vml-shape' + |
|
(this.options.clickable ? ' leaflet-clickable' : ''); |
|
this._container.coordsize = '1 1'; |
|
|
|
this._path = L.Path._createElement('path'); |
|
this._container.appendChild(this._path); |
|
|
|
this._map._pathRoot.appendChild(this._container); |
|
}, |
|
|
|
_initStyle: function () { |
|
if (this.options.stroke) { |
|
this._stroke = L.Path._createElement('stroke'); |
|
this._stroke.endcap = 'round'; |
|
this._container.appendChild(this._stroke); |
|
} else { |
|
this._container.stroked = false; |
|
} |
|
if (this.options.fill) { |
|
this._container.filled = true; |
|
this._fill = L.Path._createElement('fill'); |
|
this._container.appendChild(this._fill); |
|
} else { |
|
this._container.filled = false; |
|
} |
|
this._updateStyle(); |
|
}, |
|
|
|
_updateStyle: function () { |
|
if (this.options.stroke) { |
|
this._stroke.weight = this.options.weight + 'px'; |
|
this._stroke.color = this.options.color; |
|
this._stroke.opacity = this.options.opacity; |
|
} |
|
if (this.options.fill) { |
|
this._fill.color = this.options.fillColor || this.options.color; |
|
this._fill.opacity = this.options.fillOpacity; |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
this._container.style.display = 'none'; |
|
this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug |
|
this._container.style.display = ''; |
|
} |
|
}); |
|
|
|
L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : { |
|
_initPathRoot: function () { |
|
if (!this._pathRoot) { |
|
this._pathRoot = document.createElement('div'); |
|
this._pathRoot.className = 'leaflet-vml-container'; |
|
this._panes.overlayPane.appendChild(this._pathRoot); |
|
|
|
this.on('moveend', this._updatePathViewport); |
|
this._updatePathViewport(); |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Vector rendering for all browsers that support canvas. |
|
*/ |
|
|
|
L.Browser.canvas = (function () { |
|
return !!document.createElement('canvas').getContext; |
|
}()); |
|
|
|
L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({ |
|
statics: { |
|
//CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value |
|
CANVAS: true, |
|
SVG: false |
|
}, |
|
|
|
options: { |
|
updateOnMoveEnd: true |
|
}, |
|
|
|
_initElements: function () { |
|
this._map._initPathRoot(); |
|
this._ctx = this._map._canvasCtx; |
|
}, |
|
|
|
_updateStyle: function () { |
|
if (this.options.stroke) { |
|
this._ctx.lineWidth = this.options.weight; |
|
this._ctx.strokeStyle = this.options.color; |
|
} |
|
if (this.options.fill) { |
|
this._ctx.fillStyle = this.options.fillColor || this.options.color; |
|
} |
|
}, |
|
|
|
_drawPath: function () { |
|
var i, j, len, len2, point, drawMethod; |
|
|
|
this._ctx.beginPath(); |
|
|
|
for (i = 0, len = this._parts.length; i < len; i++) { |
|
for (j = 0, len2 = this._parts[i].length; j < len2; j++) { |
|
point = this._parts[i][j]; |
|
drawMethod = (j === 0 ? 'move' : 'line') + 'To'; |
|
|
|
this._ctx[drawMethod](point.x, point.y); |
|
} |
|
// TODO refactor ugly hack |
|
if (this instanceof L.Polygon) { |
|
this._ctx.closePath(); |
|
} |
|
} |
|
}, |
|
|
|
_checkIfEmpty: function () { |
|
return !this._parts.length; |
|
}, |
|
|
|
_updatePath: function () { |
|
if (this._checkIfEmpty()) { |
|
return; |
|
} |
|
|
|
this._drawPath(); |
|
|
|
this._ctx.save(); |
|
|
|
this._updateStyle(); |
|
|
|
var opacity = this.options.opacity, |
|
fillOpacity = this.options.fillOpacity; |
|
|
|
if (this.options.fill) { |
|
if (fillOpacity < 1) { |
|
this._ctx.globalAlpha = fillOpacity; |
|
} |
|
this._ctx.fill(); |
|
} |
|
|
|
if (this.options.stroke) { |
|
if (opacity < 1) { |
|
this._ctx.globalAlpha = opacity; |
|
} |
|
this._ctx.stroke(); |
|
} |
|
|
|
this._ctx.restore(); |
|
|
|
// TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature |
|
}, |
|
|
|
_initEvents: function () { |
|
if (this.options.clickable) { |
|
// TODO hand cursor |
|
// TODO mouseover, mouseout, dblclick |
|
this._map.on('click', this._onClick, this); |
|
} |
|
}, |
|
|
|
_onClick: function (e) { |
|
if (this._containsPoint(e.layerPoint)) { |
|
this.fire('click', e); |
|
} |
|
}, |
|
|
|
onRemove: function (map) { |
|
map.off('viewreset', this._projectLatlngs, this); |
|
map.off(this._updateTrigger, this._updatePath, this); |
|
map.fire(this._updateTrigger); |
|
} |
|
}); |
|
|
|
L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : { |
|
_initPathRoot: function () { |
|
var root = this._pathRoot, |
|
ctx; |
|
|
|
if (!root) { |
|
root = this._pathRoot = document.createElement("canvas"); |
|
root.style.position = 'absolute'; |
|
ctx = this._canvasCtx = root.getContext('2d'); |
|
|
|
ctx.lineCap = "round"; |
|
ctx.lineJoin = "round"; |
|
|
|
this._panes.overlayPane.appendChild(root); |
|
|
|
this.on('moveend', this._updateCanvasViewport); |
|
this._updateCanvasViewport(); |
|
} |
|
}, |
|
|
|
_updateCanvasViewport: function () { |
|
this._updatePathViewport(); |
|
|
|
var vp = this._pathViewport, |
|
min = vp.min, |
|
size = vp.max.subtract(min), |
|
root = this._pathRoot; |
|
|
|
//TODO check if it's works properly on mobile webkit |
|
L.DomUtil.setPosition(root, min); |
|
root.width = size.x; |
|
root.height = size.y; |
|
root.getContext('2d').translate(-min.x, -min.y); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.LineUtil contains different utility functions for line segments |
|
* and polylines (clipping, simplification, distances, etc.) |
|
*/ |
|
|
|
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; |
|
}, |
|
|
|
/*jshint bitwise:false */ // temporarily allow bitwise oprations |
|
|
|
// 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 min = bounds.min, |
|
max = bounds.max; |
|
|
|
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds), |
|
codeB = this._getBitCode(b, bounds); |
|
|
|
// 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 { |
|
var 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; |
|
|
|
if (code & 8) { // top |
|
return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y); |
|
} else if (code & 4) { // bottom |
|
return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y); |
|
} else if (code & 2) { // right |
|
return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx); |
|
} else if (code & 1) { // left |
|
return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx); |
|
} |
|
}, |
|
|
|
_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; |
|
}, |
|
|
|
/*jshint bitwise:true */ |
|
|
|
// 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 = L.Path.extend({ |
|
initialize: function (latlngs, options) { |
|
L.Path.prototype.initialize.call(this, options); |
|
this._latlngs = latlngs; |
|
}, |
|
|
|
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, |
|
|
|
updateOnMoveEnd: true |
|
}, |
|
|
|
projectLatlngs: function () { |
|
this._originalPoints = []; |
|
|
|
for (var i = 0, len = this._latlngs.length; i < len; i++) { |
|
this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]); |
|
} |
|
}, |
|
|
|
getPathString: function () { |
|
for (var i = 0, len = this._parts.length, str = ''; i < len; i++) { |
|
str += this._getPathPartStr(this._parts[i]); |
|
} |
|
return str; |
|
}, |
|
|
|
getLatLngs: function () { |
|
return this._latlngs; |
|
}, |
|
|
|
setLatLngs: function (latlngs) { |
|
this._latlngs = latlngs; |
|
this._redraw(); |
|
return this; |
|
}, |
|
|
|
addLatLng: function (latlng) { |
|
this._latlngs.push(latlng); |
|
this._redraw(); |
|
return this; |
|
}, |
|
|
|
spliceLatLngs: function (index, howMany) { |
|
var removed = [].splice.apply(this._latlngs, arguments); |
|
this._redraw(); |
|
return removed; |
|
}, |
|
|
|
closestLayerPoint: function (p) { |
|
var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null; |
|
|
|
for (var j = 0, jLen = parts.length; j < jLen; j++) { |
|
var points = parts[j]; |
|
for (var i = 1, len = points.length; i < len; i++) { |
|
p1 = points[i - 1]; |
|
p2 = points[i]; |
|
var point = L.LineUtil._sqClosestPointOnSegment(p, p1, p2); |
|
if (point._sqDist < minDistance) { |
|
minDistance = point._sqDist; |
|
minPoint = point; |
|
} |
|
} |
|
} |
|
if (minPoint) { |
|
minPoint.distance = Math.sqrt(minDistance); |
|
} |
|
return minPoint; |
|
}, |
|
|
|
getBounds: function () { |
|
var b = new L.LatLngBounds(); |
|
var latLngs = this.getLatLngs(); |
|
for (var i = 0, len = latLngs.length; i < len; i++) { |
|
b.extend(latLngs[i]); |
|
} |
|
return b; |
|
}, |
|
|
|
_getPathPartStr: function (points) { |
|
var round = L.Path.VML; |
|
|
|
for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) { |
|
p = points[j]; |
|
if (round) { |
|
p._round(); |
|
} |
|
str += (j ? 'L' : 'M') + p.x + ' ' + p.y; |
|
} |
|
return str; |
|
}, |
|
|
|
_clipPoints: function () { |
|
var points = this._originalPoints, |
|
len = points.length, |
|
i, k, segment; |
|
|
|
if (this.options.noClip) { |
|
this._parts = [points]; |
|
return; |
|
} |
|
|
|
this._parts = []; |
|
|
|
var parts = this._parts, |
|
vp = this._map._pathViewport, |
|
lu = L.LineUtil; |
|
|
|
for (i = 0, k = 0; i < len - 1; i++) { |
|
segment = lu.clipSegment(points[i], points[i + 1], vp, i); |
|
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[i + 1]) || (i === len - 2)) { |
|
parts[k].push(segment[1]); |
|
k++; |
|
} |
|
} |
|
}, |
|
|
|
// simplify each clipped part of the polyline |
|
_simplifyPoints: function () { |
|
var parts = this._parts, |
|
lu = L.LineUtil; |
|
|
|
for (var i = 0, len = parts.length; i < len; i++) { |
|
parts[i] = lu.simplify(parts[i], this.options.smoothFactor); |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
this._clipPoints(); |
|
this._simplifyPoints(); |
|
|
|
L.Path.prototype._updatePath.call(this); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.PolyUtil contains utilify functions for polygons (clipping, etc.). |
|
*/ |
|
|
|
/*jshint bitwise:false */ // allow bitwise oprations 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 min = bounds.min, |
|
max = bounds.max, |
|
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; |
|
}; |
|
|
|
/*jshint bitwise:true */ |
|
|
|
|
|
/* |
|
* L.Polygon is used to display polygons on a map. |
|
*/ |
|
|
|
L.Polygon = L.Polyline.extend({ |
|
options: { |
|
fill: true |
|
}, |
|
|
|
initialize: function (latlngs, options) { |
|
L.Polyline.prototype.initialize.call(this, latlngs, options); |
|
|
|
if (latlngs && (latlngs[0] instanceof Array)) { |
|
this._latlngs = latlngs[0]; |
|
this._holes = latlngs.slice(1); |
|
} |
|
}, |
|
|
|
projectLatlngs: function () { |
|
L.Polyline.prototype.projectLatlngs.call(this); |
|
|
|
// project polygon holes points |
|
// TODO move this logic to Polyline to get rid of duplication |
|
this._holePoints = []; |
|
|
|
if (!this._holes) { |
|
return; |
|
} |
|
|
|
for (var i = 0, len = this._holes.length, hole; i < len; i++) { |
|
this._holePoints[i] = []; |
|
|
|
for (var j = 0, len2 = this._holes[i].length; j < len2; j++) { |
|
this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]); |
|
} |
|
} |
|
}, |
|
|
|
_clipPoints: function () { |
|
var points = this._originalPoints, |
|
newParts = []; |
|
|
|
this._parts = [points].concat(this._holePoints); |
|
|
|
if (this.options.noClip) { |
|
return; |
|
} |
|
|
|
for (var i = 0, len = this._parts.length; i < len; i++) { |
|
var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport); |
|
if (!clipped.length) { |
|
continue; |
|
} |
|
newParts.push(clipped); |
|
} |
|
|
|
this._parts = newParts; |
|
}, |
|
|
|
_getPathPartStr: function (points) { |
|
var str = L.Polyline.prototype._getPathPartStr.call(this, points); |
|
return str + (L.Browser.svg ? 'z' : 'x'); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Contains L.MultiPolyline and L.MultiPolygon layers. |
|
*/ |
|
|
|
(function () { |
|
function createMulti(Klass) { |
|
return L.FeatureGroup.extend({ |
|
initialize: function (latlngs, options) { |
|
this._layers = {}; |
|
this._options = options; |
|
this.setLatLngs(latlngs); |
|
}, |
|
|
|
setLatLngs: function (latlngs) { |
|
var i = 0, len = latlngs.length; |
|
|
|
this._iterateLayers(function (layer) { |
|
if (i < len) { |
|
layer.setLatLngs(latlngs[i++]); |
|
} else { |
|
this.removeLayer(layer); |
|
} |
|
}, this); |
|
|
|
while (i < len) { |
|
this.addLayer(new Klass(latlngs[i++], this._options)); |
|
} |
|
} |
|
}); |
|
} |
|
|
|
L.MultiPolyline = createMulti(L.Polyline); |
|
L.MultiPolygon = createMulti(L.Polygon); |
|
}()); |
|
|
|
|
|
/* |
|
* L.Circle is a circle overlay (with a certain radius in meters). |
|
*/ |
|
|
|
L.Circle = L.Path.extend({ |
|
initialize: function (latlng, radius, options) { |
|
L.Path.prototype.initialize.call(this, options); |
|
|
|
this._latlng = latlng; |
|
this._mRadius = radius; |
|
}, |
|
|
|
options: { |
|
fill: true |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = latlng; |
|
this._redraw(); |
|
return this; |
|
}, |
|
|
|
setRadius: function (radius) { |
|
this._mRadius = radius; |
|
this._redraw(); |
|
return this; |
|
}, |
|
|
|
projectLatlngs: function () { |
|
var equatorLength = 40075017, |
|
hLength = equatorLength * Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat); |
|
|
|
var lngSpan = (this._mRadius / hLength) * 360, |
|
latlng2 = new L.LatLng(this._latlng.lat, this._latlng.lng - lngSpan, true), |
|
point2 = this._map.latLngToLayerPoint(latlng2); |
|
|
|
this._point = this._map.latLngToLayerPoint(this._latlng); |
|
this._radius = Math.round(this._point.x - point2.x); |
|
}, |
|
|
|
getPathString: function () { |
|
var p = this._point, |
|
r = this._radius; |
|
|
|
if (this._checkIfEmpty()) { |
|
return ''; |
|
} |
|
|
|
if (L.Browser.svg) { |
|
return "M" + p.x + "," + (p.y - r) + |
|
"A" + r + "," + r + ",0,1,1," + |
|
(p.x - 0.1) + "," + (p.y - r) + " z"; |
|
} else { |
|
p._round(); |
|
r = Math.round(r); |
|
return "AL " + p.x + "," + p.y + " " + r + "," + r + " 0," + (65535 * 360); |
|
} |
|
}, |
|
|
|
_checkIfEmpty: function () { |
|
var vp = this._map._pathViewport, |
|
r = this._radius, |
|
p = this._point; |
|
|
|
return p.x - r > vp.max.x || p.y - r > vp.max.y || |
|
p.x + r < vp.min.x || p.y + r < vp.min.y; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.CircleMarker is a circle overlay with a permanent pixel radius. |
|
*/ |
|
|
|
L.CircleMarker = L.Circle.extend({ |
|
options: { |
|
radius: 10, |
|
weight: 2 |
|
}, |
|
|
|
initialize: function (latlng, options) { |
|
L.Circle.prototype.initialize.call(this, latlng, null, options); |
|
this._radius = this.options.radius; |
|
}, |
|
|
|
projectLatlngs: function () { |
|
this._point = this._map.latLngToLayerPoint(this._latlng); |
|
}, |
|
|
|
setRadius: function (radius) { |
|
this._radius = radius; |
|
this._redraw(); |
|
return this; |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Polyline.include(!L.Path.CANVAS ? {} : { |
|
_containsPoint: function (p, closed) { |
|
var i, j, k, len, len2, dist, part, |
|
w = this.options.weight / 2; |
|
|
|
if (L.Browser.touch) { |
|
w += 10; // polyline click tolerance on touch devices |
|
} |
|
|
|
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; |
|
} |
|
|
|
dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]); |
|
|
|
if (dist <= w) { |
|
return true; |
|
} |
|
} |
|
} |
|
return false; |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Polygon.include(!L.Path.CANVAS ? {} : { |
|
_containsPoint: function (p) { |
|
var inside = false, |
|
part, p1, p2, |
|
i, j, k, |
|
len, len2; |
|
|
|
// TODO optimization: check if within bounds first |
|
|
|
if (L.Polyline.prototype._containsPoint.call(this, p, true)) { |
|
// click on polygon border |
|
return true; |
|
} |
|
|
|
// 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; |
|
} |
|
} |
|
} |
|
|
|
return inside; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Circle canvas specific drawing parts. |
|
*/ |
|
|
|
L.Circle.include(!L.Path.CANVAS ? {} : { |
|
_drawPath: function () { |
|
var p = this._point; |
|
this._ctx.beginPath(); |
|
this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2); |
|
}, |
|
|
|
_containsPoint: function (p) { |
|
var center = this._point, |
|
w2 = this.options.stroke ? this.options.weight / 2 : 0; |
|
|
|
return (p.distanceTo(center) <= this._radius + w2); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.GeoJSON = L.FeatureGroup.extend({ |
|
initialize: function (geojson, options) { |
|
L.Util.setOptions(this, options); |
|
this._geojson = geojson; |
|
this._layers = {}; |
|
|
|
if (geojson) { |
|
this.addGeoJSON(geojson); |
|
} |
|
}, |
|
|
|
addGeoJSON: function (geojson) { |
|
if (geojson.features) { |
|
for (var i = 0, len = geojson.features.length; i < len; i++) { |
|
this.addGeoJSON(geojson.features[i]); |
|
} |
|
return; |
|
} |
|
|
|
var isFeature = (geojson.type === 'Feature'), |
|
geometry = (isFeature ? geojson.geometry : geojson), |
|
layer = L.GeoJSON.geometryToLayer(geometry, this.options.pointToLayer); |
|
|
|
this.fire('featureparse', { |
|
layer: layer, |
|
properties: geojson.properties, |
|
geometryType: geometry.type, |
|
bbox: geojson.bbox, |
|
id: geojson.id |
|
}); |
|
|
|
this.addLayer(layer); |
|
} |
|
}); |
|
|
|
L.Util.extend(L.GeoJSON, { |
|
geometryToLayer: function (geometry, pointToLayer) { |
|
var coords = geometry.coordinates, |
|
latlng, latlngs, |
|
i, len, |
|
layer, |
|
layers = []; |
|
|
|
switch (geometry.type) { |
|
case 'Point': |
|
latlng = this.coordsToLatLng(coords); |
|
return pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng); |
|
|
|
case 'MultiPoint': |
|
for (i = 0, len = coords.length; i < len; i++) { |
|
latlng = this.coordsToLatLng(coords[i]); |
|
layer = pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng); |
|
layers.push(layer); |
|
} |
|
return new L.FeatureGroup(layers); |
|
|
|
case 'LineString': |
|
latlngs = this.coordsToLatLngs(coords); |
|
return new L.Polyline(latlngs); |
|
|
|
case 'Polygon': |
|
latlngs = this.coordsToLatLngs(coords, 1); |
|
return new L.Polygon(latlngs); |
|
|
|
case 'MultiLineString': |
|
latlngs = this.coordsToLatLngs(coords, 1); |
|
return new L.MultiPolyline(latlngs); |
|
|
|
case "MultiPolygon": |
|
latlngs = this.coordsToLatLngs(coords, 2); |
|
return new L.MultiPolygon(latlngs); |
|
|
|
case "GeometryCollection": |
|
for (i = 0, len = geometry.geometries.length; i < len; i++) { |
|
layer = this.geometryToLayer(geometry.geometries[i], pointToLayer); |
|
layers.push(layer); |
|
} |
|
return new L.FeatureGroup(layers); |
|
|
|
default: |
|
throw new Error('Invalid GeoJSON object.'); |
|
} |
|
}, |
|
|
|
coordsToLatLng: function (/*Array*/ coords, /*Boolean*/ reverse)/*: LatLng*/ { |
|
var lat = parseFloat(coords[reverse ? 0 : 1]), |
|
lng = parseFloat(coords[reverse ? 1 : 0]); |
|
return new L.LatLng(lat, lng, true); |
|
}, |
|
|
|
coordsToLatLngs: function (/*Array*/ coords, /*Number*/ levelsDeep, /*Boolean*/ reverse)/*: Array*/ { |
|
var latlng, latlngs = [], |
|
i, len = coords.length; |
|
|
|
for (i = 0; i < len; i++) { |
|
latlng = levelsDeep ? |
|
this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) : |
|
this.coordsToLatLng(coords[i], reverse); |
|
latlngs.push(latlng); |
|
} |
|
return latlngs; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.DomEvent contains functions for working with DOM events. |
|
*/ |
|
|
|
L.DomEvent = { |
|
/* inpired by John Resig, Dean Edwards and YUI addEvent implementations */ |
|
addListener: function (/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn, /*Object*/ context) { |
|
var id = L.Util.stamp(fn), |
|
key = '_leaflet_' + type + id; |
|
|
|
if (obj[key]) { |
|
return; |
|
} |
|
|
|
var handler = function (e) { |
|
return fn.call(context || obj, e || L.DomEvent._getEvent()); |
|
}; |
|
|
|
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')) { |
|
var originalHandler = handler, |
|
newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout'); |
|
handler = function (e) { |
|
if (!L.DomEvent._checkMouse(obj, e)) { |
|
return; |
|
} |
|
return originalHandler(e); |
|
}; |
|
obj.addEventListener(newType, handler, false); |
|
} else { |
|
obj.addEventListener(type, handler, false); |
|
} |
|
} else if ('attachEvent' in obj) { |
|
obj.attachEvent("on" + type, handler); |
|
} |
|
|
|
obj[key] = handler; |
|
}, |
|
|
|
removeListener: function (/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn) { |
|
var id = L.Util.stamp(fn), |
|
key = '_leaflet_' + type + id, |
|
handler = obj[key]; |
|
|
|
if (!handler) { |
|
return; |
|
} |
|
|
|
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 if ((type === 'mouseenter') || (type === 'mouseleave')) { |
|
obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false); |
|
} else { |
|
obj.removeEventListener(type, handler, false); |
|
} |
|
} else if ('detachEvent' in obj) { |
|
obj.detachEvent("on" + type, handler); |
|
} |
|
obj[key] = null; |
|
}, |
|
|
|
_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); |
|
}, |
|
|
|
/*jshint noarg:false */ // evil magic for IE |
|
_getEvent: function () { |
|
var e = window.event; |
|
if (!e) { |
|
var caller = arguments.callee.caller; |
|
while (caller) { |
|
e = caller['arguments'][0]; |
|
if (e && window.Event === e.constructor) { |
|
break; |
|
} |
|
caller = caller.caller; |
|
} |
|
} |
|
return e; |
|
}, |
|
/*jshint noarg:false */ |
|
|
|
stopPropagation: function (/*Event*/ e) { |
|
if (e.stopPropagation) { |
|
e.stopPropagation(); |
|
} else { |
|
e.cancelBubble = true; |
|
} |
|
}, |
|
|
|
disableClickPropagation: function (/*HTMLElement*/ el) { |
|
L.DomEvent.addListener(el, L.Draggable.START, L.DomEvent.stopPropagation); |
|
L.DomEvent.addListener(el, 'click', L.DomEvent.stopPropagation); |
|
L.DomEvent.addListener(el, 'dblclick', L.DomEvent.stopPropagation); |
|
}, |
|
|
|
preventDefault: function (/*Event*/ e) { |
|
if (e.preventDefault) { |
|
e.preventDefault(); |
|
} else { |
|
e.returnValue = false; |
|
} |
|
}, |
|
|
|
stop: function (e) { |
|
L.DomEvent.preventDefault(e); |
|
L.DomEvent.stopPropagation(e); |
|
}, |
|
|
|
getMousePosition: function (e, container) { |
|
var x = e.pageX ? e.pageX : e.clientX + |
|
document.body.scrollLeft + document.documentElement.scrollLeft, |
|
y = e.pageY ? e.pageY : e.clientY + |
|
document.body.scrollTop + document.documentElement.scrollTop, |
|
pos = new L.Point(x, y); |
|
return (container ? |
|
pos.subtract(L.DomUtil.getViewportOffset(container)) : pos); |
|
}, |
|
|
|
getWheelDelta: function (e) { |
|
var delta = 0; |
|
if (e.wheelDelta) { |
|
delta = e.wheelDelta / 120; |
|
} |
|
if (e.detail) { |
|
delta = -e.detail / 3; |
|
} |
|
return delta; |
|
} |
|
}; |
|
|
|
|
|
|
|
/* |
|
* L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too. |
|
*/ |
|
|
|
L.Draggable = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
statics: { |
|
START: L.Browser.touch ? 'touchstart' : 'mousedown', |
|
END: L.Browser.touch ? 'touchend' : 'mouseup', |
|
MOVE: L.Browser.touch ? 'touchmove' : 'mousemove', |
|
TAP_TOLERANCE: 15 |
|
}, |
|
|
|
initialize: function (element, dragStartTarget) { |
|
this._element = element; |
|
this._dragStartTarget = dragStartTarget || element; |
|
}, |
|
|
|
enable: function () { |
|
if (this._enabled) { |
|
return; |
|
} |
|
L.DomEvent.addListener(this._dragStartTarget, L.Draggable.START, this._onDown, this); |
|
this._enabled = true; |
|
}, |
|
|
|
disable: function () { |
|
if (!this._enabled) { |
|
return; |
|
} |
|
L.DomEvent.removeListener(this._dragStartTarget, L.Draggable.START, this._onDown); |
|
this._enabled = false; |
|
}, |
|
|
|
_onDown: function (e) { |
|
if ((!L.Browser.touch && e.shiftKey) || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { |
|
return; |
|
} |
|
|
|
if (e.touches && e.touches.length > 1) { |
|
return; |
|
} |
|
|
|
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e), |
|
el = first.target; |
|
|
|
L.DomEvent.preventDefault(e); |
|
|
|
if (L.Browser.touch && el.tagName.toLowerCase() === 'a') { |
|
el.className += ' leaflet-active'; |
|
} |
|
|
|
this._moved = false; |
|
if (this._moving) { |
|
return; |
|
} |
|
|
|
if (!L.Browser.touch) { |
|
L.DomUtil.disableTextSelection(); |
|
this._setMovingCursor(); |
|
} |
|
|
|
this._startPos = this._newPos = L.DomUtil.getPosition(this._element); |
|
this._startPoint = new L.Point(first.clientX, first.clientY); |
|
|
|
L.DomEvent.addListener(document, L.Draggable.MOVE, this._onMove, this); |
|
L.DomEvent.addListener(document, L.Draggable.END, this._onUp, this); |
|
}, |
|
|
|
_onMove: function (e) { |
|
if (e.touches && e.touches.length > 1) { |
|
return; |
|
} |
|
|
|
L.DomEvent.preventDefault(e); |
|
|
|
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e); |
|
|
|
if (!this._moved) { |
|
this.fire('dragstart'); |
|
this._moved = true; |
|
} |
|
this._moving = true; |
|
|
|
var newPoint = new L.Point(first.clientX, first.clientY); |
|
this._newPos = this._startPos.add(newPoint).subtract(this._startPoint); |
|
|
|
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 (e) { |
|
if (e.changedTouches) { |
|
var first = e.changedTouches[0], |
|
el = first.target, |
|
dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0; |
|
|
|
if (el.tagName.toLowerCase() === 'a') { |
|
el.className = el.className.replace(' leaflet-active', ''); |
|
} |
|
|
|
if (dist < L.Draggable.TAP_TOLERANCE) { |
|
this._simulateEvent('click', first); |
|
} |
|
} |
|
|
|
if (!L.Browser.touch) { |
|
L.DomUtil.enableTextSelection(); |
|
this._restoreCursor(); |
|
} |
|
|
|
L.DomEvent.removeListener(document, L.Draggable.MOVE, this._onMove); |
|
L.DomEvent.removeListener(document, L.Draggable.END, this._onUp); |
|
|
|
if (this._moved) { |
|
this.fire('dragend'); |
|
} |
|
this._moving = false; |
|
}, |
|
|
|
_setMovingCursor: function () { |
|
this._bodyCursor = document.body.style.cursor; |
|
document.body.style.cursor = 'move'; |
|
}, |
|
|
|
_restoreCursor: function () { |
|
document.body.style.cursor = this._bodyCursor; |
|
}, |
|
|
|
_simulateEvent: function (type, e) { |
|
var simulatedEvent = document.createEvent('MouseEvents'); |
|
|
|
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); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler classes are used internally to inject interaction features 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 internally by L.Map to make the map draggable. |
|
*/ |
|
|
|
L.Map.Drag = L.Handler.extend({ |
|
addHooks: function () { |
|
if (!this._draggable) { |
|
this._draggable = new L.Draggable(this._map._mapPane, this._map._container); |
|
|
|
this._draggable |
|
.on('dragstart', this._onDragStart, this) |
|
.on('drag', this._onDrag, this) |
|
.on('dragend', this._onDragEnd, this); |
|
|
|
var options = this._map.options; |
|
|
|
if (options.worldCopyJump && !options.continuousWorld) { |
|
this._draggable.on('predrag', this._onPreDrag, this); |
|
this._map.on('viewreset', this._onViewReset, this); |
|
} |
|
} |
|
this._draggable.enable(); |
|
}, |
|
|
|
removeHooks: function () { |
|
this._draggable.disable(); |
|
}, |
|
|
|
moved: function () { |
|
return this._draggable && this._draggable._moved; |
|
}, |
|
|
|
_onDragStart: function () { |
|
this._map |
|
.fire('movestart') |
|
.fire('dragstart'); |
|
}, |
|
|
|
_onDrag: function () { |
|
this._map |
|
.fire('move') |
|
.fire('drag'); |
|
}, |
|
|
|
_onViewReset: function () { |
|
var pxCenter = this._map.getSize().divideBy(2), |
|
pxWorldCenter = this._map.latLngToLayerPoint(new L.LatLng(0, 0)); |
|
|
|
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter); |
|
}, |
|
|
|
_onPreDrag: function () { |
|
var map = this._map, |
|
worldWidth = map.options.scale(map.getZoom()), |
|
halfWidth = Math.round(worldWidth / 2), |
|
dx = this._initialWorldOffset.x, |
|
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._newPos.x = newX; |
|
}, |
|
|
|
_onDragEnd: function () { |
|
var map = this._map; |
|
|
|
map |
|
.fire('moveend') |
|
.fire('dragend'); |
|
|
|
if (map.options.maxBounds) { |
|
// TODO predrag validation instead of animation |
|
L.Util.requestAnimFrame(this._panInsideMaxBounds, map, true, map._container); |
|
} |
|
}, |
|
|
|
_panInsideMaxBounds: function () { |
|
this.panInsideBounds(this.options.maxBounds); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.DoubleClickZoom is used internally by L.Map to add double-click zooming. |
|
*/ |
|
|
|
L.Map.DoubleClickZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
this._map.on('dblclick', this._onDoubleClick); |
|
// TODO remove 3d argument? |
|
}, |
|
|
|
removeHooks: function () { |
|
this._map.off('dblclick', this._onDoubleClick); |
|
}, |
|
|
|
_onDoubleClick: function (e) { |
|
this.setView(e.latlng, this._zoom + 1); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.ScrollWheelZoom is used internally by L.Map to enable mouse scroll wheel zooming on the map. |
|
*/ |
|
|
|
L.Map.ScrollWheelZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
L.DomEvent.addListener(this._map._container, 'mousewheel', this._onWheelScroll, this); |
|
this._delta = 0; |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.removeListener(this._map._container, 'mousewheel', this._onWheelScroll); |
|
}, |
|
|
|
_onWheelScroll: function (e) { |
|
var delta = L.DomEvent.getWheelDelta(e); |
|
this._delta += delta; |
|
this._lastMousePos = this._map.mouseEventToContainerPoint(e); |
|
|
|
clearTimeout(this._timer); |
|
this._timer = setTimeout(L.Util.bind(this._performZoom, this), 50); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_performZoom: function () { |
|
var map = this._map, |
|
delta = Math.round(this._delta), |
|
zoom = map.getZoom(); |
|
|
|
delta = Math.max(Math.min(delta, 4), -4); |
|
delta = map._limitZoom(zoom + delta) - zoom; |
|
|
|
this._delta = 0; |
|
|
|
if (!delta) { |
|
return; |
|
} |
|
|
|
var newCenter = this._getCenterForScrollWheelZoom(this._lastMousePos, delta), |
|
newZoom = zoom + delta; |
|
|
|
map.setView(newCenter, newZoom); |
|
}, |
|
|
|
_getCenterForScrollWheelZoom: function (mousePos, delta) { |
|
var map = this._map, |
|
centerPoint = map.getPixelBounds().getCenter(), |
|
viewHalf = map.getSize().divideBy(2), |
|
centerOffset = mousePos.subtract(viewHalf).multiplyBy(1 - Math.pow(2, -delta)), |
|
newCenterPoint = centerPoint.add(centerOffset); |
|
|
|
return map.unproject(newCenterPoint, map._zoom, true); |
|
} |
|
}); |
|
|
|
|
|
L.Util.extend(L.DomEvent, { |
|
// inspired by Zepto touch code by Thomas Fuchs |
|
addDoubleTapListener: function (obj, handler, id) { |
|
var last, |
|
doubleTap = false, |
|
delay = 250, |
|
touch, |
|
pre = '_leaflet_', |
|
touchstart = 'touchstart', |
|
touchend = 'touchend'; |
|
|
|
function onTouchStart(e) { |
|
if (e.touches.length !== 1) { |
|
return; |
|
} |
|
|
|
var now = Date.now(), |
|
delta = now - (last || now); |
|
|
|
touch = e.touches[0]; |
|
doubleTap = (delta > 0 && delta <= delay); |
|
last = now; |
|
} |
|
function onTouchEnd(e) { |
|
if (doubleTap) { |
|
touch.type = 'dblclick'; |
|
handler(touch); |
|
last = null; |
|
} |
|
} |
|
obj[pre + touchstart + id] = onTouchStart; |
|
obj[pre + touchend + id] = onTouchEnd; |
|
|
|
obj.addEventListener(touchstart, onTouchStart, false); |
|
obj.addEventListener(touchend, onTouchEnd, false); |
|
}, |
|
|
|
removeDoubleTapListener: function (obj, id) { |
|
var pre = '_leaflet_'; |
|
obj.removeEventListener(obj, obj[pre + 'touchstart' + id], false); |
|
obj.removeEventListener(obj, obj[pre + 'touchend' + id], false); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.TouchZoom is used internally by L.Map to add touch-zooming on Webkit-powered mobile browsers. |
|
*/ |
|
|
|
L.Map.TouchZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
L.DomEvent.addListener(this._map._container, 'touchstart', this._onTouchStart, this); |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.removeListener(this._map._container, 'touchstart', this._onTouchStart, this); |
|
}, |
|
|
|
_onTouchStart: function (e) { |
|
if (!e.touches || e.touches.length !== 2 || this._map._animatingZoom) { |
|
return; |
|
} |
|
|
|
var p1 = this._map.mouseEventToLayerPoint(e.touches[0]), |
|
p2 = this._map.mouseEventToLayerPoint(e.touches[1]), |
|
viewCenter = this._map.containerPointToLayerPoint(this._map.getSize().divideBy(2)); |
|
|
|
this._startCenter = p1.add(p2).divideBy(2, true); |
|
this._startDist = p1.distanceTo(p2); |
|
//this._startTransform = this._map._mapPane.style.webkitTransform; |
|
|
|
this._moved = false; |
|
this._zooming = true; |
|
|
|
this._centerOffset = viewCenter.subtract(this._startCenter); |
|
|
|
L.DomEvent.addListener(document, 'touchmove', this._onTouchMove, this); |
|
L.DomEvent.addListener(document, 'touchend', this._onTouchEnd, this); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_onTouchMove: function (e) { |
|
if (!e.touches || e.touches.length !== 2) { |
|
return; |
|
} |
|
|
|
if (!this._moved) { |
|
this._map._mapPane.className += ' leaflet-zoom-anim'; |
|
|
|
this._map |
|
.fire('zoomstart') |
|
.fire('movestart') |
|
._prepareTileBg(); |
|
|
|
this._moved = true; |
|
} |
|
|
|
var p1 = this._map.mouseEventToLayerPoint(e.touches[0]), |
|
p2 = this._map.mouseEventToLayerPoint(e.touches[1]); |
|
|
|
this._scale = p1.distanceTo(p2) / this._startDist; |
|
this._delta = p1.add(p2).divideBy(2, true).subtract(this._startCenter); |
|
|
|
// Used 2 translates instead of transform-origin because of a very strange bug - |
|
// it didn't count the origin on the first touch-zoom but worked correctly afterwards |
|
|
|
this._map._tileBg.style.webkitTransform = [ |
|
L.DomUtil.getTranslateString(this._delta), |
|
L.DomUtil.getScaleString(this._scale, this._startCenter) |
|
].join(" "); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_onTouchEnd: function (e) { |
|
if (!this._moved || !this._zooming) { |
|
return; |
|
} |
|
this._zooming = false; |
|
|
|
var oldZoom = this._map.getZoom(), |
|
floatZoomDelta = Math.log(this._scale) / Math.LN2, |
|
roundZoomDelta = (floatZoomDelta > 0 ? Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)), |
|
zoom = this._map._limitZoom(oldZoom + roundZoomDelta), |
|
zoomDelta = zoom - oldZoom, |
|
centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale), |
|
centerPoint = this._map.getPixelOrigin().add(this._startCenter).add(centerOffset), |
|
center = this._map.unproject(centerPoint); |
|
|
|
L.DomEvent.removeListener(document, 'touchmove', this._onTouchMove); |
|
L.DomEvent.removeListener(document, 'touchend', this._onTouchEnd); |
|
|
|
var finalScale = Math.pow(2, zoomDelta); |
|
|
|
this._map._runAnimation(center, zoom, finalScale / this._scale, this._startCenter.add(centerOffset)); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.ShiftDragZoom is used internally by L.Map to add shift-drag zoom (zoom to a selected bounding box). |
|
*/ |
|
|
|
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.addListener(this._container, 'mousedown', this._onMouseDown, this); |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.removeListener(this._container, 'mousedown', this._onMouseDown); |
|
}, |
|
|
|
_onMouseDown: function (e) { |
|
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { |
|
return false; |
|
} |
|
|
|
L.DomUtil.disableTextSelection(); |
|
|
|
this._startLayerPoint = this._map.mouseEventToLayerPoint(e); |
|
|
|
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane); |
|
L.DomUtil.setPosition(this._box, this._startLayerPoint); |
|
|
|
//TODO move cursor to styles |
|
this._container.style.cursor = 'crosshair'; |
|
|
|
L.DomEvent.addListener(document, 'mousemove', this._onMouseMove, this); |
|
L.DomEvent.addListener(document, 'mouseup', this._onMouseUp, this); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_onMouseMove: function (e) { |
|
var layerPoint = this._map.mouseEventToLayerPoint(e), |
|
dx = layerPoint.x - this._startLayerPoint.x, |
|
dy = layerPoint.y - this._startLayerPoint.y; |
|
|
|
var newX = Math.min(layerPoint.x, this._startLayerPoint.x), |
|
newY = Math.min(layerPoint.y, this._startLayerPoint.y), |
|
newPos = new L.Point(newX, newY); |
|
|
|
L.DomUtil.setPosition(this._box, newPos); |
|
|
|
this._box.style.width = (Math.abs(dx) - 4) + 'px'; |
|
this._box.style.height = (Math.abs(dy) - 4) + 'px'; |
|
}, |
|
|
|
_onMouseUp: function (e) { |
|
this._pane.removeChild(this._box); |
|
this._container.style.cursor = ''; |
|
|
|
L.DomUtil.enableTextSelection(); |
|
|
|
L.DomEvent.removeListener(document, 'mousemove', this._onMouseMove); |
|
L.DomEvent.removeListener(document, 'mouseup', this._onMouseUp); |
|
|
|
var layerPoint = this._map.mouseEventToLayerPoint(e); |
|
|
|
var bounds = new L.LatLngBounds( |
|
this._map.layerPointToLatLng(this._startLayerPoint), |
|
this._map.layerPointToLatLng(layerPoint)); |
|
|
|
this._map.fitBounds(bounds); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* 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, this) |
|
.on('drag', this._onDrag, this) |
|
.on('dragend', this._onDragEnd, this); |
|
} |
|
this._draggable.enable(); |
|
}, |
|
|
|
removeHooks: function () { |
|
this._draggable.disable(); |
|
}, |
|
|
|
moved: function () { |
|
return this._draggable && this._draggable._moved; |
|
}, |
|
|
|
_onDragStart: function (e) { |
|
this._marker |
|
.closePopup() |
|
.fire('movestart') |
|
.fire('dragstart'); |
|
}, |
|
|
|
_onDrag: function (e) { |
|
// update shadow position |
|
var iconPos = L.DomUtil.getPosition(this._marker._icon); |
|
if (this._marker._shadow) { |
|
L.DomUtil.setPosition(this._marker._shadow, iconPos); |
|
} |
|
|
|
this._marker._latlng = this._marker._map.layerPointToLatLng(iconPos); |
|
|
|
this._marker |
|
.fire('move') |
|
.fire('drag'); |
|
}, |
|
|
|
_onDragEnd: function () { |
|
this._marker |
|
.fire('moveend') |
|
.fire('dragend'); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Control = {}; |
|
|
|
L.Control.Position = { |
|
TOP_LEFT: 'topLeft', |
|
TOP_RIGHT: 'topRight', |
|
BOTTOM_LEFT: 'bottomLeft', |
|
BOTTOM_RIGHT: 'bottomRight' |
|
}; |
|
|
|
|
|
L.Map.include({ |
|
addControl: function (control) { |
|
control.onAdd(this); |
|
|
|
var pos = control.getPosition(), |
|
corner = this._controlCorners[pos], |
|
container = control.getContainer(); |
|
|
|
L.DomUtil.addClass(container, 'leaflet-control'); |
|
|
|
if (pos.indexOf('bottom') !== -1) { |
|
corner.insertBefore(container, corner.firstChild); |
|
} else { |
|
corner.appendChild(container); |
|
} |
|
return this; |
|
}, |
|
|
|
removeControl: function (control) { |
|
var pos = control.getPosition(), |
|
corner = this._controlCorners[pos], |
|
container = control.getContainer(); |
|
|
|
corner.removeChild(container); |
|
|
|
if (control.onRemove) { |
|
control.onRemove(this); |
|
} |
|
return this; |
|
}, |
|
|
|
_initControlPos: function () { |
|
var corners = this._controlCorners = {}, |
|
classPart = 'leaflet-', |
|
top = classPart + 'top', |
|
bottom = classPart + 'bottom', |
|
left = classPart + 'left', |
|
right = classPart + 'right', |
|
controlContainer = L.DomUtil.create('div', classPart + 'control-container', this._container); |
|
|
|
if (L.Browser.touch) { |
|
controlContainer.className += ' ' + classPart + 'big-buttons'; |
|
} |
|
|
|
corners.topLeft = L.DomUtil.create('div', top + ' ' + left, controlContainer); |
|
corners.topRight = L.DomUtil.create('div', top + ' ' + right, controlContainer); |
|
corners.bottomLeft = L.DomUtil.create('div', bottom + ' ' + left, controlContainer); |
|
corners.bottomRight = L.DomUtil.create('div', bottom + ' ' + right, controlContainer); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Control.Zoom = L.Class.extend({ |
|
onAdd: function (map) { |
|
this._map = map; |
|
this._container = L.DomUtil.create('div', 'leaflet-control-zoom'); |
|
|
|
this._zoomInButton = this._createButton( |
|
'Zoom in', 'leaflet-control-zoom-in', this._map.zoomIn, this._map); |
|
this._zoomOutButton = this._createButton( |
|
'Zoom out', 'leaflet-control-zoom-out', this._map.zoomOut, this._map); |
|
|
|
this._container.appendChild(this._zoomInButton); |
|
this._container.appendChild(this._zoomOutButton); |
|
}, |
|
|
|
getContainer: function () { |
|
return this._container; |
|
}, |
|
|
|
getPosition: function () { |
|
return L.Control.Position.TOP_LEFT; |
|
}, |
|
|
|
_createButton: function (title, className, fn, context) { |
|
var link = document.createElement('a'); |
|
link.href = '#'; |
|
link.title = title; |
|
link.className = className; |
|
|
|
if (!L.Browser.touch) { |
|
L.DomEvent.disableClickPropagation(link); |
|
} |
|
L.DomEvent.addListener(link, 'click', L.DomEvent.preventDefault); |
|
L.DomEvent.addListener(link, 'click', fn, context); |
|
|
|
return link; |
|
} |
|
}); |
|
|
|
|
|
L.Control.Attribution = L.Class.extend({ |
|
initialize: function (prefix) { |
|
this._prefix = prefix || 'Powered by <a href="http://leaflet.cloudmade.com">Leaflet</a>'; |
|
this._attributions = {}; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._container = L.DomUtil.create('div', 'leaflet-control-attribution'); |
|
L.DomEvent.disableClickPropagation(this._container); |
|
this._map = map; |
|
this._update(); |
|
}, |
|
|
|
getPosition: function () { |
|
return L.Control.Position.BOTTOM_RIGHT; |
|
}, |
|
|
|
getContainer: function () { |
|
return this._container; |
|
}, |
|
|
|
setPrefix: function (prefix) { |
|
this._prefix = prefix; |
|
this._update(); |
|
}, |
|
|
|
addAttribution: function (text) { |
|
if (!text) { |
|
return; |
|
} |
|
if (!this._attributions[text]) { |
|
this._attributions[text] = 0; |
|
} |
|
this._attributions[text]++; |
|
this._update(); |
|
}, |
|
|
|
removeAttribution: function (text) { |
|
if (!text) { |
|
return; |
|
} |
|
this._attributions[text]--; |
|
this._update(); |
|
}, |
|
|
|
_update: function () { |
|
if (!this._map) { |
|
return; |
|
} |
|
|
|
var attribs = []; |
|
|
|
for (var i in this._attributions) { |
|
if (this._attributions.hasOwnProperty(i)) { |
|
attribs.push(i); |
|
} |
|
} |
|
|
|
var prefixAndAttribs = []; |
|
if (this._prefix) { |
|
prefixAndAttribs.push(this._prefix); |
|
} |
|
if (attribs.length) { |
|
prefixAndAttribs.push(attribs.join(', ')); |
|
} |
|
|
|
this._container.innerHTML = prefixAndAttribs.join(' — '); |
|
} |
|
}); |
|
|
|
|
|
|
|
L.Control.Layers = L.Class.extend({ |
|
options: { |
|
collapsed: true |
|
}, |
|
|
|
initialize: function (baseLayers, overlays, options) { |
|
L.Util.setOptions(this, options); |
|
|
|
this._layers = {}; |
|
|
|
for (var i in baseLayers) { |
|
if (baseLayers.hasOwnProperty(i)) { |
|
this._addLayer(baseLayers[i], i); |
|
} |
|
} |
|
|
|
for (i in overlays) { |
|
if (overlays.hasOwnProperty(i)) { |
|
this._addLayer(overlays[i], i, true); |
|
} |
|
} |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
this._initLayout(); |
|
this._update(); |
|
}, |
|
|
|
getContainer: function () { |
|
return this._container; |
|
}, |
|
|
|
getPosition: function () { |
|
return L.Control.Position.TOP_RIGHT; |
|
}, |
|
|
|
addBaseLayer: function (layer, name) { |
|
this._addLayer(layer, name); |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
addOverlay: function (layer, name) { |
|
this._addLayer(layer, name, true); |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.Util.stamp(layer); |
|
delete this._layers[id]; |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
_initLayout: function () { |
|
this._container = L.DomUtil.create('div', 'leaflet-control-layers'); |
|
if (!L.Browser.touch) { |
|
L.DomEvent.disableClickPropagation(this._container); |
|
} |
|
|
|
this._form = L.DomUtil.create('form', 'leaflet-control-layers-list'); |
|
|
|
if (this.options.collapsed) { |
|
L.DomEvent.addListener(this._container, 'mouseover', this._expand, this); |
|
L.DomEvent.addListener(this._container, 'mouseout', this._collapse, this); |
|
|
|
var link = this._layersLink = L.DomUtil.create('a', 'leaflet-control-layers-toggle'); |
|
link.href = '#'; |
|
link.title = 'Layers'; |
|
|
|
if (L.Browser.touch) { |
|
L.DomEvent.addListener(link, 'click', this._expand, this); |
|
//L.DomEvent.disableClickPropagation(link); |
|
} else { |
|
L.DomEvent.addListener(link, 'focus', this._expand, this); |
|
} |
|
this._map.on('movestart', this._collapse, this); |
|
// TODO keyboard accessibility |
|
|
|
this._container.appendChild(link); |
|
} else { |
|
this._expand(); |
|
} |
|
|
|
this._baseLayersList = L.DomUtil.create('div', 'leaflet-control-layers-base', this._form); |
|
this._separator = L.DomUtil.create('div', 'leaflet-control-layers-separator', this._form); |
|
this._overlaysList = L.DomUtil.create('div', 'leaflet-control-layers-overlays', this._form); |
|
|
|
this._container.appendChild(this._form); |
|
}, |
|
|
|
_addLayer: function (layer, name, overlay) { |
|
var id = L.Util.stamp(layer); |
|
this._layers[id] = { |
|
layer: layer, |
|
name: name, |
|
overlay: overlay |
|
}; |
|
}, |
|
|
|
_update: function () { |
|
if (!this._container) { |
|
return; |
|
} |
|
|
|
this._baseLayersList.innerHTML = ''; |
|
this._overlaysList.innerHTML = ''; |
|
|
|
var baseLayersPresent = false, |
|
overlaysPresent = false; |
|
|
|
for (var i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
var obj = this._layers[i]; |
|
this._addItem(obj); |
|
overlaysPresent = overlaysPresent || obj.overlay; |
|
baseLayersPresent = baseLayersPresent || !obj.overlay; |
|
} |
|
} |
|
|
|
this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none'); |
|
}, |
|
|
|
_addItem: function (obj, onclick) { |
|
var label = document.createElement('label'); |
|
|
|
var input = document.createElement('input'); |
|
if (!obj.overlay) { |
|
input.name = 'leaflet-base-layers'; |
|
} |
|
input.type = obj.overlay ? 'checkbox' : 'radio'; |
|
input.checked = this._map.hasLayer(obj.layer); |
|
input.layerId = L.Util.stamp(obj.layer); |
|
|
|
L.DomEvent.addListener(input, 'click', this._onInputClick, this); |
|
|
|
var name = document.createTextNode(' ' + obj.name); |
|
|
|
label.appendChild(input); |
|
label.appendChild(name); |
|
|
|
var container = obj.overlay ? this._overlaysList : this._baseLayersList; |
|
container.appendChild(label); |
|
}, |
|
|
|
_onInputClick: function () { |
|
var i, input, obj, |
|
inputs = this._form.getElementsByTagName('input'), |
|
inputsLen = inputs.length; |
|
|
|
for (i = 0; i < inputsLen; i++) { |
|
input = inputs[i]; |
|
obj = this._layers[input.layerId]; |
|
|
|
if (input.checked) { |
|
this._map.addLayer(obj.layer, !obj.overlay); |
|
} else { |
|
this._map.removeLayer(obj.layer); |
|
} |
|
} |
|
}, |
|
|
|
_expand: function () { |
|
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded'); |
|
}, |
|
|
|
_collapse: function () { |
|
this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', ''); |
|
} |
|
}); |
|
|
|
|
|
L.Transition = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
statics: { |
|
CUSTOM_PROPS_SETTERS: { |
|
position: L.DomUtil.setPosition |
|
//TODO transform custom attr |
|
}, |
|
|
|
implemented: function () { |
|
return L.Transition.NATIVE || L.Transition.TIMER; |
|
} |
|
}, |
|
|
|
options: { |
|
easing: 'ease', |
|
duration: 0.5 |
|
}, |
|
|
|
_setProperty: function (prop, value) { |
|
var setters = L.Transition.CUSTOM_PROPS_SETTERS; |
|
if (prop in setters) { |
|
setters[prop](this._el, value); |
|
} else { |
|
this._el.style[prop] = value; |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Transition native implementation that powers Leaflet animation |
|
* in browsers that support CSS3 Transitions |
|
*/ |
|
|
|
L.Transition = L.Transition.extend({ |
|
statics: (function () { |
|
var transition = L.DomUtil.TRANSITION, |
|
transitionEnd = (transition === 'webkitTransition' || transition === 'OTransition' ? |
|
transition + 'End' : 'transitionend'); |
|
|
|
return { |
|
NATIVE: !!transition, |
|
|
|
TRANSITION: transition, |
|
PROPERTY: transition + 'Property', |
|
DURATION: transition + 'Duration', |
|
EASING: transition + 'TimingFunction', |
|
END: transitionEnd, |
|
|
|
// transition-property value to use with each particular custom property |
|
CUSTOM_PROPS_PROPERTIES: { |
|
position: L.Browser.webkit ? L.DomUtil.TRANSFORM : 'top, left' |
|
} |
|
}; |
|
}()), |
|
|
|
options: { |
|
fakeStepInterval: 100 |
|
}, |
|
|
|
initialize: function (/*HTMLElement*/ el, /*Object*/ options) { |
|
this._el = el; |
|
L.Util.setOptions(this, options); |
|
|
|
L.DomEvent.addListener(el, L.Transition.END, this._onTransitionEnd, this); |
|
this._onFakeStep = L.Util.bind(this._onFakeStep, this); |
|
}, |
|
|
|
run: function (/*Object*/ props) { |
|
var prop, |
|
propsList = [], |
|
customProp = L.Transition.CUSTOM_PROPS_PROPERTIES; |
|
|
|
for (prop in props) { |
|
if (props.hasOwnProperty(prop)) { |
|
prop = customProp[prop] ? customProp[prop] : prop; |
|
prop = this._dasherize(prop); |
|
propsList.push(prop); |
|
} |
|
} |
|
|
|
this._el.style[L.Transition.DURATION] = this.options.duration + 's'; |
|
this._el.style[L.Transition.EASING] = this.options.easing; |
|
this._el.style[L.Transition.PROPERTY] = propsList.join(', '); |
|
|
|
for (prop in props) { |
|
if (props.hasOwnProperty(prop)) { |
|
this._setProperty(prop, props[prop]); |
|
} |
|
} |
|
|
|
this._inProgress = true; |
|
|
|
this.fire('start'); |
|
|
|
if (L.Transition.NATIVE) { |
|
clearInterval(this._timer); |
|
this._timer = setInterval(this._onFakeStep, this.options.fakeStepInterval); |
|
} else { |
|
this._onTransitionEnd(); |
|
} |
|
}, |
|
|
|
_dasherize: (function () { |
|
var re = /([A-Z])/g; |
|
|
|
function replaceFn(w) { |
|
return '-' + w.toLowerCase(); |
|
} |
|
|
|
return function (str) { |
|
return str.replace(re, replaceFn); |
|
}; |
|
}()), |
|
|
|
_onFakeStep: function () { |
|
this.fire('step'); |
|
}, |
|
|
|
_onTransitionEnd: function () { |
|
if (this._inProgress) { |
|
this._inProgress = false; |
|
clearInterval(this._timer); |
|
|
|
this._el.style[L.Transition.PROPERTY] = 'none'; |
|
|
|
this.fire('step'); |
|
this.fire('end'); |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Transition fallback implementation that powers Leaflet animation |
|
* in browsers that don't support CSS3 Transitions |
|
*/ |
|
|
|
L.Transition = L.Transition.NATIVE ? L.Transition : L.Transition.extend({ |
|
statics: { |
|
getTime: Date.now || function () { |
|
return +new Date(); |
|
}, |
|
|
|
TIMER: true, |
|
|
|
EASINGS: { |
|
'ease': [0.25, 0.1, 0.25, 1.0], |
|
'linear': [0.0, 0.0, 1.0, 1.0], |
|
'ease-in': [0.42, 0, 1.0, 1.0], |
|
'ease-out': [0, 0, 0.58, 1.0], |
|
'ease-in-out': [0.42, 0, 0.58, 1.0] |
|
}, |
|
|
|
CUSTOM_PROPS_GETTERS: { |
|
position: L.DomUtil.getPosition |
|
}, |
|
|
|
//used to get units from strings like "10.5px" (->px) |
|
UNIT_RE: /^[\d\.]+(\D*)$/ |
|
}, |
|
|
|
options: { |
|
fps: 50 |
|
}, |
|
|
|
initialize: function (el, options) { |
|
this._el = el; |
|
L.Util.extend(this.options, options); |
|
|
|
var easings = L.Transition.EASINGS[this.options.easing] || L.Transition.EASINGS.ease; |
|
|
|
this._p1 = new L.Point(0, 0); |
|
this._p2 = new L.Point(easings[0], easings[1]); |
|
this._p3 = new L.Point(easings[2], easings[3]); |
|
this._p4 = new L.Point(1, 1); |
|
|
|
this._step = L.Util.bind(this._step, this); |
|
this._interval = Math.round(1000 / this.options.fps); |
|
}, |
|
|
|
run: function (props) { |
|
this._props = {}; |
|
|
|
var getters = L.Transition.CUSTOM_PROPS_GETTERS, |
|
re = L.Transition.UNIT_RE; |
|
|
|
this.fire('start'); |
|
|
|
for (var prop in props) { |
|
if (props.hasOwnProperty(prop)) { |
|
var p = {}; |
|
if (prop in getters) { |
|
p.from = getters[prop](this._el); |
|
} else { |
|
var matches = this._el.style[prop].match(re); |
|
p.from = parseFloat(matches[0]); |
|
p.unit = matches[1]; |
|
} |
|
p.to = props[prop]; |
|
this._props[prop] = p; |
|
} |
|
} |
|
|
|
clearInterval(this._timer); |
|
this._timer = setInterval(this._step, this._interval); |
|
this._startTime = L.Transition.getTime(); |
|
}, |
|
|
|
_step: function () { |
|
var time = L.Transition.getTime(), |
|
elapsed = time - this._startTime, |
|
duration = this.options.duration * 1000; |
|
|
|
if (elapsed < duration) { |
|
this._runFrame(this._cubicBezier(elapsed / duration)); |
|
} else { |
|
this._runFrame(1); |
|
this._complete(); |
|
} |
|
}, |
|
|
|
_runFrame: function (percentComplete) { |
|
var setters = L.Transition.CUSTOM_PROPS_SETTERS, |
|
prop, p, value; |
|
|
|
for (prop in this._props) { |
|
if (this._props.hasOwnProperty(prop)) { |
|
p = this._props[prop]; |
|
if (prop in setters) { |
|
value = p.to.subtract(p.from).multiplyBy(percentComplete).add(p.from); |
|
setters[prop](this._el, value); |
|
} else { |
|
this._el.style[prop] = |
|
((p.to - p.from) * percentComplete + p.from) + p.unit; |
|
} |
|
} |
|
} |
|
this.fire('step'); |
|
}, |
|
|
|
_complete: function () { |
|
clearInterval(this._timer); |
|
this.fire('end'); |
|
}, |
|
|
|
_cubicBezier: function (t) { |
|
var a = Math.pow(1 - t, 3), |
|
b = 3 * Math.pow(1 - t, 2) * t, |
|
c = 3 * (1 - t) * Math.pow(t, 2), |
|
d = Math.pow(t, 3), |
|
p1 = this._p1.multiplyBy(a), |
|
p2 = this._p2.multiplyBy(b), |
|
p3 = this._p3.multiplyBy(c), |
|
p4 = this._p4.multiplyBy(d); |
|
|
|
return p1.add(p2).add(p3).add(p4).y; |
|
} |
|
}); |
|
|
|
|
|
L.Map.include(!(L.Transition && L.Transition.implemented()) ? {} : { |
|
setView: function (center, zoom, forceReset) { |
|
zoom = this._limitZoom(zoom); |
|
var zoomChanged = (this._zoom !== zoom); |
|
|
|
if (this._loaded && !forceReset && this._layers) { |
|
// difference between the new and current centers in pixels |
|
var offset = this._getNewTopLeftPoint(center).subtract(this._getTopLeftPoint()); |
|
|
|
center = new L.LatLng(center.lat, center.lng); |
|
|
|
var done = (zoomChanged ? |
|
!!this._zoomToIfCenterInView && this._zoomToIfCenterInView(center, zoom, offset) : |
|
this._panByIfClose(offset)); |
|
|
|
// exit if animated pan or zoom started |
|
if (done) { |
|
return this; |
|
} |
|
} |
|
|
|
// reset the map view |
|
this._resetView(center, zoom); |
|
|
|
return this; |
|
}, |
|
|
|
panBy: function (offset) { |
|
if (!(offset.x || offset.y)) { |
|
return this; |
|
} |
|
|
|
if (!this._panTransition) { |
|
this._panTransition = new L.Transition(this._mapPane, {duration: 0.3}); |
|
|
|
this._panTransition.on('step', this._onPanTransitionStep, this); |
|
this._panTransition.on('end', this._onPanTransitionEnd, this); |
|
} |
|
this.fire('movestart'); |
|
|
|
this._panTransition.run({ |
|
position: L.DomUtil.getPosition(this._mapPane).subtract(offset) |
|
}); |
|
|
|
return this; |
|
}, |
|
|
|
_onPanTransitionStep: function () { |
|
this.fire('move'); |
|
}, |
|
|
|
_onPanTransitionEnd: function () { |
|
this.fire('moveend'); |
|
}, |
|
|
|
_panByIfClose: function (offset) { |
|
if (this._offsetIsWithinView(offset)) { |
|
this.panBy(offset); |
|
return true; |
|
} |
|
return false; |
|
}, |
|
|
|
_offsetIsWithinView: function (offset, multiplyFactor) { |
|
var m = multiplyFactor || 1, |
|
size = this.getSize(); |
|
return (Math.abs(offset.x) <= size.x * m) && |
|
(Math.abs(offset.y) <= size.y * m); |
|
} |
|
}); |
|
|
|
|
|
L.Map.include(!L.DomUtil.TRANSITION ? {} : { |
|
_zoomToIfCenterInView: function (center, zoom, centerOffset) { |
|
|
|
if (this._animatingZoom) { |
|
return true; |
|
} |
|
if (!this.options.zoomAnimation) { |
|
return false; |
|
} |
|
|
|
var zoomDelta = zoom - this._zoom, |
|
scale = Math.pow(2, zoomDelta), |
|
offset = centerOffset.divideBy(1 - 1 / scale); |
|
|
|
//if offset does not exceed half of the view |
|
if (!this._offsetIsWithinView(offset, 1)) { |
|
return false; |
|
} |
|
|
|
this._mapPane.className += ' leaflet-zoom-anim'; |
|
|
|
this |
|
.fire('movestart') |
|
.fire('zoomstart'); |
|
|
|
var centerPoint = this.containerPointToLayerPoint(this.getSize().divideBy(2)), |
|
origin = centerPoint.add(offset); |
|
|
|
this._prepareTileBg(); |
|
|
|
this._runAnimation(center, zoom, scale, origin); |
|
|
|
return true; |
|
}, |
|
|
|
|
|
_runAnimation: function (center, zoom, scale, origin) { |
|
this._animatingZoom = true; |
|
|
|
this._animateToCenter = center; |
|
this._animateToZoom = zoom; |
|
|
|
var transform = L.DomUtil.TRANSFORM; |
|
|
|
clearTimeout(this._clearTileBgTimer); |
|
|
|
//dumb FireFox hack, I have no idea why this magic zero translate fixes the scale transition problem |
|
if (L.Browser.gecko || window.opera) { |
|
this._tileBg.style[transform] += ' translate(0,0)'; |
|
} |
|
|
|
var scaleStr; |
|
|
|
// Android doesn't like translate/scale chains, transformOrigin + scale works better but |
|
// it breaks touch zoom which Anroid doesn't support anyway, so that's a really ugly hack |
|
// TODO work around this prettier |
|
if (L.Browser.android) { |
|
this._tileBg.style[transform + 'Origin'] = origin.x + 'px ' + origin.y + 'px'; |
|
scaleStr = 'scale(' + scale + ')'; |
|
} else { |
|
scaleStr = L.DomUtil.getScaleString(scale, origin); |
|
} |
|
|
|
L.Util.falseFn(this._tileBg.offsetWidth); //hack to make sure transform is updated before running animation |
|
|
|
var options = {}; |
|
options[transform] = this._tileBg.style[transform] + ' ' + scaleStr; |
|
this._tileBg.transition.run(options); |
|
}, |
|
|
|
_prepareTileBg: function () { |
|
if (!this._tileBg) { |
|
this._tileBg = this._createPane('leaflet-tile-pane', this._mapPane); |
|
this._tileBg.style.zIndex = 1; |
|
} |
|
|
|
var tilePane = this._tilePane, |
|
tileBg = this._tileBg; |
|
|
|
// prepare the background pane to become the main tile pane |
|
//tileBg.innerHTML = ''; |
|
tileBg.style[L.DomUtil.TRANSFORM] = ''; |
|
tileBg.style.visibility = 'hidden'; |
|
|
|
// tells tile layers to reinitialize their containers |
|
tileBg.empty = true; |
|
tilePane.empty = false; |
|
|
|
this._tilePane = this._panes.tilePane = tileBg; |
|
this._tileBg = tilePane; |
|
|
|
if (!this._tileBg.transition) { |
|
this._tileBg.transition = new L.Transition(this._tileBg, {duration: 0.3, easing: 'cubic-bezier(0.25,0.1,0.25,0.75)'}); |
|
this._tileBg.transition.on('end', this._onZoomTransitionEnd, this); |
|
} |
|
|
|
this._stopLoadingBgTiles(); |
|
}, |
|
|
|
// stops loading all tiles in the background layer |
|
_stopLoadingBgTiles: function () { |
|
var tiles = [].slice.call(this._tileBg.getElementsByTagName('img')); |
|
|
|
for (var i = 0, len = tiles.length; i < len; i++) { |
|
if (!tiles[i].complete) { |
|
tiles[i].onload = L.Util.falseFn; |
|
tiles[i].onerror = L.Util.falseFn; |
|
tiles[i].src = 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='; |
|
|
|
tiles[i].parentNode.removeChild(tiles[i]); |
|
tiles[i] = null; |
|
} |
|
} |
|
}, |
|
|
|
_onZoomTransitionEnd: function () { |
|
this._restoreTileFront(); |
|
|
|
L.Util.falseFn(this._tileBg.offsetWidth); |
|
this._resetView(this._animateToCenter, this._animateToZoom, true, true); |
|
|
|
this._mapPane.className = this._mapPane.className.replace(' leaflet-zoom-anim', ''); //TODO toggleClass util |
|
this._animatingZoom = false; |
|
}, |
|
|
|
_restoreTileFront: function () { |
|
this._tilePane.innerHTML = ''; |
|
this._tilePane.style.visibility = ''; |
|
this._tilePane.style.zIndex = 2; |
|
this._tileBg.style.zIndex = 1; |
|
}, |
|
|
|
_clearTileBg: function () { |
|
if (!this._animatingZoom && !this.touchZoom._zooming) { |
|
this._tileBg.innerHTML = ''; |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Provides L.Map with convenient shortcuts for W3C geolocation. |
|
*/ |
|
|
|
L.Map.include({ |
|
locate: function (/*Object*/ options) { |
|
|
|
this._locationOptions = options = L.Util.extend({ |
|
watch: false, |
|
setView: false, |
|
maxZoom: Infinity, |
|
timeout: 10000, |
|
maximumAge: 0, |
|
enableHighAccuracy: false |
|
}, options); |
|
|
|
if (!navigator.geolocation) { |
|
return this.fire('locationerror', { |
|
code: 0, |
|
message: "Geolocation not supported." |
|
}); |
|
} |
|
|
|
var onResponse = L.Util.bind(this._handleGeolocationResponse, this), |
|
onError = L.Util.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); |
|
} |
|
}, |
|
|
|
locateAndSetView: function (maxZoom, options) { |
|
options = L.Util.extend({ |
|
maxZoom: maxZoom || Infinity, |
|
setView: true |
|
}, options); |
|
return this.locate(options); |
|
}, |
|
|
|
_handleGeolocationError: function (error) { |
|
var c = error.code, |
|
message = (c === 1 ? "permission denied" : |
|
(c === 2 ? "position unavailable" : "timeout")); |
|
|
|
if (this._locationOptions.setView && !this._loaded) { |
|
this.fitWorld(); |
|
} |
|
|
|
this.fire('locationerror', { |
|
code: c, |
|
message: "Geolocation error: " + message + "." |
|
}); |
|
}, |
|
|
|
_handleGeolocationResponse: function (pos) { |
|
var latAccuracy = 180 * pos.coords.accuracy / 4e7, |
|
lngAccuracy = latAccuracy * 2, |
|
lat = pos.coords.latitude, |
|
lng = pos.coords.longitude, |
|
latlng = new L.LatLng(lat, lng); |
|
|
|
var sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy), |
|
ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy), |
|
bounds = new L.LatLngBounds(sw, ne); |
|
|
|
if (this._locationOptions.setView) { |
|
var zoom = Math.min(this.getBoundsZoom(bounds), this._locationOptions.maxZoom); |
|
this.setView(latlng, zoom); |
|
} |
|
|
|
this.fire('locationfound', { |
|
latlng: latlng, |
|
bounds: bounds, |
|
accuracy: pos.coords.accuracy |
|
}); |
|
} |
|
}); |
|
|
|
|
|
|