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Compass/compass/public/assets/leaflet-0.7.3/leaflet-src.js

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/*
Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com
(c) 2010-2013, Vladimir Agafonkin
(c) 2010-2011, CloudMade
*/
(function (window, document, undefined) {
var oldL = window.L,
L = {};
L.version = '0.7.3';
// define Leaflet for Node module pattern loaders, including Browserify
if (typeof module === 'object' && typeof module.exports === 'object') {
module.exports = L;
// define Leaflet as an AMD module
} else if (typeof define === 'function' && define.amd) {
define(L);
}
// define Leaflet as a global L variable, saving the original L to restore later if needed
L.noConflict = function () {
window.L = oldL;
return this;
};
window.L = L;
/*
* L.Util contains various utility functions used throughout Leaflet code.
*/
L.Util = {
extend: function (dest) { // (Object[, Object, ...]) ->
var sources = Array.prototype.slice.call(arguments, 1),
i, j, len, src;
for (j = 0, len = sources.length; j < len; j++) {
src = sources[j] || {};
for (i in src) {
if (src.hasOwnProperty(i)) {
dest[i] = src[i];
}
}
}
return dest;
},
bind: function (fn, obj) { // (Function, Object) -> Function
var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null;
return function () {
return fn.apply(obj, args || arguments);
};
},
stamp: (function () {
var lastId = 0,
key = '_leaflet_id';
return function (obj) {
obj[key] = obj[key] || ++lastId;
return obj[key];
};
}()),
invokeEach: function (obj, method, context) {
var i, args;
if (typeof obj === 'object') {
args = Array.prototype.slice.call(arguments, 3);
for (i in obj) {
method.apply(context, [i, obj[i]].concat(args));
}
return true;
}
return false;
},
limitExecByInterval: function (fn, time, context) {
var lock, execOnUnlock;
return function wrapperFn() {
var args = arguments;
if (lock) {
execOnUnlock = true;
return;
}
lock = true;
setTimeout(function () {
lock = false;
if (execOnUnlock) {
wrapperFn.apply(context, args);
execOnUnlock = false;
}
}, time);
fn.apply(context, args);
};
},
falseFn: function () {
return false;
},
formatNum: function (num, digits) {
var pow = Math.pow(10, digits || 5);
return Math.round(num * pow) / pow;
},
trim: function (str) {
return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
},
splitWords: function (str) {
return L.Util.trim(str).split(/\s+/);
},
setOptions: function (obj, options) {
obj.options = L.extend({}, obj.options, options);
return obj.options;
},
getParamString: function (obj, existingUrl, uppercase) {
var params = [];
for (var i in obj) {
params.push(encodeURIComponent(uppercase ? i.toUpperCase() : i) + '=' + encodeURIComponent(obj[i]));
}
return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&');
},
template: function (str, data) {
return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
var value = data[key];
if (value === undefined) {
throw new Error('No value provided for variable ' + str);
} else if (typeof value === 'function') {
value = value(data);
}
return value;
});
},
isArray: Array.isArray || function (obj) {
return (Object.prototype.toString.call(obj) === '[object Array]');
},
emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
};
(function () {
// inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/
function getPrefixed(name) {
var i, fn,
prefixes = ['webkit', 'moz', 'o', 'ms'];
for (i = 0; i < prefixes.length && !fn; i++) {
fn = window[prefixes[i] + name];
}
return fn;
}
var lastTime = 0;
function timeoutDefer(fn) {
var time = +new Date(),
timeToCall = Math.max(0, 16 - (time - lastTime));
lastTime = time + timeToCall;
return window.setTimeout(fn, timeToCall);
}
var requestFn = window.requestAnimationFrame ||
getPrefixed('RequestAnimationFrame') || timeoutDefer;
var cancelFn = window.cancelAnimationFrame ||
getPrefixed('CancelAnimationFrame') ||
getPrefixed('CancelRequestAnimationFrame') ||
function (id) { window.clearTimeout(id); };
L.Util.requestAnimFrame = function (fn, context, immediate, element) {
fn = L.bind(fn, context);
if (immediate && requestFn === timeoutDefer) {
fn();
} else {
return requestFn.call(window, fn, element);
}
};
L.Util.cancelAnimFrame = function (id) {
if (id) {
cancelFn.call(window, id);
}
};
}());
// shortcuts for most used utility functions
L.extend = L.Util.extend;
L.bind = L.Util.bind;
L.stamp = L.Util.stamp;
L.setOptions = L.Util.setOptions;
/*
* L.Class powers the OOP facilities of the library.
* Thanks to John Resig and Dean Edwards for inspiration!
*/
L.Class = function () {};
L.Class.extend = function (props) {
// extended class with the new prototype
var NewClass = function () {
// call the constructor
if (this.initialize) {
this.initialize.apply(this, arguments);
}
// call all constructor hooks
if (this._initHooks) {
this.callInitHooks();
}
};
// instantiate class without calling constructor
var F = function () {};
F.prototype = this.prototype;
var proto = new F();
proto.constructor = NewClass;
NewClass.prototype = proto;
//inherit parent's statics
for (var i in this) {
if (this.hasOwnProperty(i) && i !== 'prototype') {
NewClass[i] = this[i];
}
}
// mix static properties into the class
if (props.statics) {
L.extend(NewClass, props.statics);
delete props.statics;
}
// mix includes into the prototype
if (props.includes) {
L.Util.extend.apply(null, [proto].concat(props.includes));
delete props.includes;
}
// merge options
if (props.options && proto.options) {
props.options = L.extend({}, proto.options, props.options);
}
// mix given properties into the prototype
L.extend(proto, props);
proto._initHooks = [];
var parent = this;
// jshint camelcase: false
NewClass.__super__ = parent.prototype;
// add method for calling all hooks
proto.callInitHooks = function () {
if (this._initHooksCalled) { return; }
if (parent.prototype.callInitHooks) {
parent.prototype.callInitHooks.call(this);
}
this._initHooksCalled = true;
for (var i = 0, len = proto._initHooks.length; i < len; i++) {
proto._initHooks[i].call(this);
}
};
return NewClass;
};
// method for adding properties to prototype
L.Class.include = function (props) {
L.extend(this.prototype, props);
};
// merge new default options to the Class
L.Class.mergeOptions = function (options) {
L.extend(this.prototype.options, options);
};
// add a constructor hook
L.Class.addInitHook = function (fn) { // (Function) || (String, args...)
var args = Array.prototype.slice.call(arguments, 1);
var init = typeof fn === 'function' ? fn : function () {
this[fn].apply(this, args);
};
this.prototype._initHooks = this.prototype._initHooks || [];
this.prototype._initHooks.push(init);
};
/*
* L.Mixin.Events is used to add custom events functionality to Leaflet classes.
*/
var eventsKey = '_leaflet_events';
L.Mixin = {};
L.Mixin.Events = {
addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
// types can be a map of types/handlers
if (L.Util.invokeEach(types, this.addEventListener, this, fn, context)) { return this; }
var events = this[eventsKey] = this[eventsKey] || {},
contextId = context && context !== this && L.stamp(context),
i, len, event, type, indexKey, indexLenKey, typeIndex;
// types can be a string of space-separated words
types = L.Util.splitWords(types);
for (i = 0, len = types.length; i < len; i++) {
event = {
action: fn,
context: context || this
};
type = types[i];
if (contextId) {
// store listeners of a particular context in a separate hash (if it has an id)
// gives a major performance boost when removing thousands of map layers
indexKey = type + '_idx';
indexLenKey = indexKey + '_len';
typeIndex = events[indexKey] = events[indexKey] || {};
if (!typeIndex[contextId]) {
typeIndex[contextId] = [];
// keep track of the number of keys in the index to quickly check if it's empty
events[indexLenKey] = (events[indexLenKey] || 0) + 1;
}
typeIndex[contextId].push(event);
} else {
events[type] = events[type] || [];
events[type].push(event);
}
}
return this;
},
hasEventListeners: function (type) { // (String) -> Boolean
var events = this[eventsKey];
return !!events && ((type in events && events[type].length > 0) ||
(type + '_idx' in events && events[type + '_idx_len'] > 0));
},
removeEventListener: function (types, fn, context) { // ([String, Function, Object]) or (Object[, Object])
if (!this[eventsKey]) {
return this;
}
if (!types) {
return this.clearAllEventListeners();
}
if (L.Util.invokeEach(types, this.removeEventListener, this, fn, context)) { return this; }
var events = this[eventsKey],
contextId = context && context !== this && L.stamp(context),
i, len, type, listeners, j, indexKey, indexLenKey, typeIndex, removed;
types = L.Util.splitWords(types);
for (i = 0, len = types.length; i < len; i++) {
type = types[i];
indexKey = type + '_idx';
indexLenKey = indexKey + '_len';
typeIndex = events[indexKey];
if (!fn) {
// clear all listeners for a type if function isn't specified
delete events[type];
delete events[indexKey];
delete events[indexLenKey];
} else {
listeners = contextId && typeIndex ? typeIndex[contextId] : events[type];
if (listeners) {
for (j = listeners.length - 1; j >= 0; j--) {
if ((listeners[j].action === fn) && (!context || (listeners[j].context === context))) {
removed = listeners.splice(j, 1);
// set the old action to a no-op, because it is possible
// that the listener is being iterated over as part of a dispatch
removed[0].action = L.Util.falseFn;
}
}
if (context && typeIndex && (listeners.length === 0)) {
delete typeIndex[contextId];
events[indexLenKey]--;
}
}
}
}
return this;
},
clearAllEventListeners: function () {
delete this[eventsKey];
return this;
},
fireEvent: function (type, data) { // (String[, Object])
if (!this.hasEventListeners(type)) {
return this;
}
var event = L.Util.extend({}, data, { type: type, target: this });
var events = this[eventsKey],
listeners, i, len, typeIndex, contextId;
if (events[type]) {
// make sure adding/removing listeners inside other listeners won't cause infinite loop
listeners = events[type].slice();
for (i = 0, len = listeners.length; i < len; i++) {
listeners[i].action.call(listeners[i].context, event);
}
}
// fire event for the context-indexed listeners as well
typeIndex = events[type + '_idx'];
for (contextId in typeIndex) {
listeners = typeIndex[contextId].slice();
if (listeners) {
for (i = 0, len = listeners.length; i < len; i++) {
listeners[i].action.call(listeners[i].context, event);
}
}
}
return this;
},
addOneTimeEventListener: function (types, fn, context) {
if (L.Util.invokeEach(types, this.addOneTimeEventListener, this, fn, context)) { return this; }
var handler = L.bind(function () {
this
.removeEventListener(types, fn, context)
.removeEventListener(types, handler, context);
}, this);
return this
.addEventListener(types, fn, context)
.addEventListener(types, handler, context);
}
};
L.Mixin.Events.on = L.Mixin.Events.addEventListener;
L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
L.Mixin.Events.once = L.Mixin.Events.addOneTimeEventListener;
L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
/*
* L.Browser handles different browser and feature detections for internal Leaflet use.
*/
(function () {
var ie = 'ActiveXObject' in window,
ielt9 = ie && !document.addEventListener,
// terrible browser detection to work around Safari / iOS / Android browser bugs
ua = navigator.userAgent.toLowerCase(),
webkit = ua.indexOf('webkit') !== -1,
chrome = ua.indexOf('chrome') !== -1,
phantomjs = ua.indexOf('phantom') !== -1,
android = ua.indexOf('android') !== -1,
android23 = ua.search('android [23]') !== -1,
gecko = ua.indexOf('gecko') !== -1,
mobile = typeof orientation !== undefined + '',
msPointer = window.navigator && window.navigator.msPointerEnabled &&
window.navigator.msMaxTouchPoints && !window.PointerEvent,
pointer = (window.PointerEvent && window.navigator.pointerEnabled && window.navigator.maxTouchPoints) ||
msPointer,
retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
window.matchMedia('(min-resolution:144dpi)').matches),
doc = document.documentElement,
ie3d = ie && ('transition' in doc.style),
webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()) && !android23,
gecko3d = 'MozPerspective' in doc.style,
opera3d = 'OTransition' in doc.style,
any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs;
// PhantomJS has 'ontouchstart' in document.documentElement, but doesn't actually support touch.
// https://github.com/Leaflet/Leaflet/pull/1434#issuecomment-13843151
var touch = !window.L_NO_TOUCH && !phantomjs && (function () {
var startName = 'ontouchstart';
// IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.Pointer) or WebKit, etc.
if (pointer || (startName in doc)) {
return true;
}
// Firefox/Gecko
var div = document.createElement('div'),
supported = false;
if (!div.setAttribute) {
return false;
}
div.setAttribute(startName, 'return;');
if (typeof div[startName] === 'function') {
supported = true;
}
div.removeAttribute(startName);
div = null;
return supported;
}());
L.Browser = {
ie: ie,
ielt9: ielt9,
webkit: webkit,
gecko: gecko && !webkit && !window.opera && !ie,
android: android,
android23: android23,
chrome: chrome,
ie3d: ie3d,
webkit3d: webkit3d,
gecko3d: gecko3d,
opera3d: opera3d,
any3d: any3d,
mobile: mobile,
mobileWebkit: mobile && webkit,
mobileWebkit3d: mobile && webkit3d,
mobileOpera: mobile && window.opera,
touch: touch,
msPointer: msPointer,
pointer: pointer,
retina: retina
};
}());
/*
* L.Point represents a point with x and y coordinates.
*/
L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) {
this.x = (round ? Math.round(x) : x);
this.y = (round ? Math.round(y) : y);
};
L.Point.prototype = {
clone: function () {
return new L.Point(this.x, this.y);
},
// non-destructive, returns a new point
add: function (point) {
return this.clone()._add(L.point(point));
},
// destructive, used directly for performance in situations where it's safe to modify existing point
_add: function (point) {
this.x += point.x;
this.y += point.y;
return this;
},
subtract: function (point) {
return this.clone()._subtract(L.point(point));
},
_subtract: function (point) {
this.x -= point.x;
this.y -= point.y;
return this;
},
divideBy: function (num) {
return this.clone()._divideBy(num);
},
_divideBy: function (num) {
this.x /= num;
this.y /= num;
return this;
},
multiplyBy: function (num) {
return this.clone()._multiplyBy(num);
},
_multiplyBy: function (num) {
this.x *= num;
this.y *= num;
return this;
},
round: function () {
return this.clone()._round();
},
_round: function () {
this.x = Math.round(this.x);
this.y = Math.round(this.y);
return this;
},
floor: function () {
return this.clone()._floor();
},
_floor: function () {
this.x = Math.floor(this.x);
this.y = Math.floor(this.y);
return this;
},
distanceTo: function (point) {
point = L.point(point);
var x = point.x - this.x,
y = point.y - this.y;
return Math.sqrt(x * x + y * y);
},
equals: function (point) {
point = L.point(point);
return point.x === this.x &&
point.y === this.y;
},
contains: function (point) {
point = L.point(point);
return Math.abs(point.x) <= Math.abs(this.x) &&
Math.abs(point.y) <= Math.abs(this.y);
},
toString: function () {
return 'Point(' +
L.Util.formatNum(this.x) + ', ' +
L.Util.formatNum(this.y) + ')';
}
};
L.point = function (x, y, round) {
if (x instanceof L.Point) {
return x;
}
if (L.Util.isArray(x)) {
return new L.Point(x[0], x[1]);
}
if (x === undefined || x === null) {
return x;
}
return new L.Point(x, y, round);
};
/*
* L.Bounds represents a rectangular area on the screen in pixel coordinates.
*/
L.Bounds = function (a, b) { //(Point, Point) or Point[]
if (!a) { return; }
var points = b ? [a, b] : a;
for (var i = 0, len = points.length; i < len; i++) {
this.extend(points[i]);
}
};
L.Bounds.prototype = {
// extend the bounds to contain the given point
extend: function (point) { // (Point)
point = L.point(point);
if (!this.min && !this.max) {
this.min = point.clone();
this.max = point.clone();
} else {
this.min.x = Math.min(point.x, this.min.x);
this.max.x = Math.max(point.x, this.max.x);
this.min.y = Math.min(point.y, this.min.y);
this.max.y = Math.max(point.y, this.max.y);
}
return this;
},
getCenter: function (round) { // (Boolean) -> Point
return new L.Point(
(this.min.x + this.max.x) / 2,
(this.min.y + this.max.y) / 2, round);
},
getBottomLeft: function () { // -> Point
return new L.Point(this.min.x, this.max.y);
},
getTopRight: function () { // -> Point
return new L.Point(this.max.x, this.min.y);
},
getSize: function () {
return this.max.subtract(this.min);
},
contains: function (obj) { // (Bounds) or (Point) -> Boolean
var min, max;
if (typeof obj[0] === 'number' || obj instanceof L.Point) {
obj = L.point(obj);
} else {
obj = L.bounds(obj);
}
if (obj instanceof L.Bounds) {
min = obj.min;
max = obj.max;
} else {
min = max = obj;
}
return (min.x >= this.min.x) &&
(max.x <= this.max.x) &&
(min.y >= this.min.y) &&
(max.y <= this.max.y);
},
intersects: function (bounds) { // (Bounds) -> Boolean
bounds = L.bounds(bounds);
var min = this.min,
max = this.max,
min2 = bounds.min,
max2 = bounds.max,
xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
return xIntersects && yIntersects;
},
isValid: function () {
return !!(this.min && this.max);
}
};
L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[])
if (!a || a instanceof L.Bounds) {
return a;
}
return new L.Bounds(a, b);
};
/*
* L.Transformation is an utility class to perform simple point transformations through a 2d-matrix.
*/
L.Transformation = function (a, b, c, d) {
this._a = a;
this._b = b;
this._c = c;
this._d = d;
};
L.Transformation.prototype = {
transform: function (point, scale) { // (Point, Number) -> Point
return this._transform(point.clone(), scale);
},
// destructive transform (faster)
_transform: function (point, scale) {
scale = scale || 1;
point.x = scale * (this._a * point.x + this._b);
point.y = scale * (this._c * point.y + this._d);
return point;
},
untransform: function (point, scale) {
scale = scale || 1;
return new L.Point(
(point.x / scale - this._b) / this._a,
(point.y / scale - this._d) / this._c);
}
};
/*
* L.DomUtil contains various utility functions for working with DOM.
*/
L.DomUtil = {
get: function (id) {
return (typeof id === 'string' ? document.getElementById(id) : id);
},
getStyle: function (el, style) {
var value = el.style[style];
if (!value && el.currentStyle) {
value = el.currentStyle[style];
}
if ((!value || value === 'auto') && document.defaultView) {
var css = document.defaultView.getComputedStyle(el, null);
value = css ? css[style] : null;
}
return value === 'auto' ? null : value;
},
getViewportOffset: function (element) {
var top = 0,
left = 0,
el = element,
docBody = document.body,
docEl = document.documentElement,
pos;
do {
top += el.offsetTop || 0;
left += el.offsetLeft || 0;
//add borders
top += parseInt(L.DomUtil.getStyle(el, 'borderTopWidth'), 10) || 0;
left += parseInt(L.DomUtil.getStyle(el, 'borderLeftWidth'), 10) || 0;
pos = L.DomUtil.getStyle(el, 'position');
if (el.offsetParent === docBody && pos === 'absolute') { break; }
if (pos === 'fixed') {
top += docBody.scrollTop || docEl.scrollTop || 0;
left += docBody.scrollLeft || docEl.scrollLeft || 0;
break;
}
if (pos === 'relative' && !el.offsetLeft) {
var width = L.DomUtil.getStyle(el, 'width'),
maxWidth = L.DomUtil.getStyle(el, 'max-width'),
r = el.getBoundingClientRect();
if (width !== 'none' || maxWidth !== 'none') {
left += r.left + el.clientLeft;
}
//calculate full y offset since we're breaking out of the loop
top += r.top + (docBody.scrollTop || docEl.scrollTop || 0);
break;
}
el = el.offsetParent;
} while (el);
el = element;
do {
if (el === docBody) { break; }
top -= el.scrollTop || 0;
left -= el.scrollLeft || 0;
el = el.parentNode;
} while (el);
return new L.Point(left, top);
},
documentIsLtr: function () {
if (!L.DomUtil._docIsLtrCached) {
L.DomUtil._docIsLtrCached = true;
L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === 'ltr';
}
return L.DomUtil._docIsLtr;
},
create: function (tagName, className, container) {
var el = document.createElement(tagName);
el.className = className;
if (container) {
container.appendChild(el);
}
return el;
},
hasClass: function (el, name) {
if (el.classList !== undefined) {
return el.classList.contains(name);
}
var className = L.DomUtil._getClass(el);
return className.length > 0 && new RegExp('(^|\\s)' + name + '(\\s|$)').test(className);
},
addClass: function (el, name) {
if (el.classList !== undefined) {
var classes = L.Util.splitWords(name);
for (var i = 0, len = classes.length; i < len; i++) {
el.classList.add(classes[i]);
}
} else if (!L.DomUtil.hasClass(el, name)) {
var className = L.DomUtil._getClass(el);
L.DomUtil._setClass(el, (className ? className + ' ' : '') + name);
}
},
removeClass: function (el, name) {
if (el.classList !== undefined) {
el.classList.remove(name);
} else {
L.DomUtil._setClass(el, L.Util.trim((' ' + L.DomUtil._getClass(el) + ' ').replace(' ' + name + ' ', ' ')));
}
},
_setClass: function (el, name) {
if (el.className.baseVal === undefined) {
el.className = name;
} else {
// in case of SVG element
el.className.baseVal = name;
}
},
_getClass: function (el) {
return el.className.baseVal === undefined ? el.className : el.className.baseVal;
},
setOpacity: function (el, value) {
if ('opacity' in el.style) {
el.style.opacity = value;
} else if ('filter' in el.style) {
var filter = false,
filterName = 'DXImageTransform.Microsoft.Alpha';
// filters collection throws an error if we try to retrieve a filter that doesn't exist
try {
filter = el.filters.item(filterName);
} catch (e) {
// don't set opacity to 1 if we haven't already set an opacity,
// it isn't needed and breaks transparent pngs.
if (value === 1) { return; }
}
value = Math.round(value * 100);
if (filter) {
filter.Enabled = (value !== 100);
filter.Opacity = value;
} else {
el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')';
}
}
},
testProp: function (props) {
var style = document.documentElement.style;
for (var i = 0; i < props.length; i++) {
if (props[i] in style) {
return props[i];
}
}
return false;
},
getTranslateString: function (point) {
// on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate
// makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care
// (same speed either way), Opera 12 doesn't support translate3d
var is3d = L.Browser.webkit3d,
open = 'translate' + (is3d ? '3d' : '') + '(',
close = (is3d ? ',0' : '') + ')';
return open + point.x + 'px,' + point.y + 'px' + close;
},
getScaleString: function (scale, origin) {
var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))),
scaleStr = ' scale(' + scale + ') ';
return preTranslateStr + scaleStr;
},
setPosition: function (el, point, disable3D) { // (HTMLElement, Point[, Boolean])
// jshint camelcase: false
el._leaflet_pos = point;
if (!disable3D && L.Browser.any3d) {
el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point);
} else {
el.style.left = point.x + 'px';
el.style.top = point.y + 'px';
}
},
getPosition: function (el) {
// this method is only used for elements previously positioned using setPosition,
// so it's safe to cache the position for performance
// jshint camelcase: false
return el._leaflet_pos;
}
};
// prefix style property names
L.DomUtil.TRANSFORM = L.DomUtil.testProp(
['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']);
// webkitTransition comes first because some browser versions that drop vendor prefix don't do
// the same for the transitionend event, in particular the Android 4.1 stock browser
L.DomUtil.TRANSITION = L.DomUtil.testProp(
['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']);
L.DomUtil.TRANSITION_END =
L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ?
L.DomUtil.TRANSITION + 'End' : 'transitionend';
(function () {
if ('onselectstart' in document) {
L.extend(L.DomUtil, {
disableTextSelection: function () {
L.DomEvent.on(window, 'selectstart', L.DomEvent.preventDefault);
},
enableTextSelection: function () {
L.DomEvent.off(window, 'selectstart', L.DomEvent.preventDefault);
}
});
} else {
var userSelectProperty = L.DomUtil.testProp(
['userSelect', 'WebkitUserSelect', 'OUserSelect', 'MozUserSelect', 'msUserSelect']);
L.extend(L.DomUtil, {
disableTextSelection: function () {
if (userSelectProperty) {
var style = document.documentElement.style;
this._userSelect = style[userSelectProperty];
style[userSelectProperty] = 'none';
}
},
enableTextSelection: function () {
if (userSelectProperty) {
document.documentElement.style[userSelectProperty] = this._userSelect;
delete this._userSelect;
}
}
});
}
L.extend(L.DomUtil, {
disableImageDrag: function () {
L.DomEvent.on(window, 'dragstart', L.DomEvent.preventDefault);
},
enableImageDrag: function () {
L.DomEvent.off(window, 'dragstart', L.DomEvent.preventDefault);
}
});
})();
/*
* L.LatLng represents a geographical point with latitude and longitude coordinates.
*/
L.LatLng = function (lat, lng, alt) { // (Number, Number, Number)
lat = parseFloat(lat);
lng = parseFloat(lng);
if (isNaN(lat) || isNaN(lng)) {
throw new Error('Invalid LatLng object: (' + lat + ', ' + lng + ')');
}
this.lat = lat;
this.lng = lng;
if (alt !== undefined) {
this.alt = parseFloat(alt);
}
};
L.extend(L.LatLng, {
DEG_TO_RAD: Math.PI / 180,
RAD_TO_DEG: 180 / Math.PI,
MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check
});
L.LatLng.prototype = {
equals: function (obj) { // (LatLng) -> Boolean
if (!obj) { return false; }
obj = L.latLng(obj);
var margin = Math.max(
Math.abs(this.lat - obj.lat),
Math.abs(this.lng - obj.lng));
return margin <= L.LatLng.MAX_MARGIN;
},
toString: function (precision) { // (Number) -> String
return 'LatLng(' +
L.Util.formatNum(this.lat, precision) + ', ' +
L.Util.formatNum(this.lng, precision) + ')';
},
// Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
// TODO move to projection code, LatLng shouldn't know about Earth
distanceTo: function (other) { // (LatLng) -> Number
other = L.latLng(other);
var R = 6378137, // earth radius in meters
d2r = L.LatLng.DEG_TO_RAD,
dLat = (other.lat - this.lat) * d2r,
dLon = (other.lng - this.lng) * d2r,
lat1 = this.lat * d2r,
lat2 = other.lat * d2r,
sin1 = Math.sin(dLat / 2),
sin2 = Math.sin(dLon / 2);
var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2);
return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
},
wrap: function (a, b) { // (Number, Number) -> LatLng
var lng = this.lng;
a = a || -180;
b = b || 180;
lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a);
return new L.LatLng(this.lat, lng);
}
};
L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number)
if (a instanceof L.LatLng) {
return a;
}
if (L.Util.isArray(a)) {
if (typeof a[0] === 'number' || typeof a[0] === 'string') {
return new L.LatLng(a[0], a[1], a[2]);
} else {
return null;
}
}
if (a === undefined || a === null) {
return a;
}
if (typeof a === 'object' && 'lat' in a) {
return new L.LatLng(a.lat, 'lng' in a ? a.lng : a.lon);
}
if (b === undefined) {
return null;
}
return new L.LatLng(a, b);
};
/*
* L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
*/
L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[])
if (!southWest) { return; }
var latlngs = northEast ? [southWest, northEast] : southWest;
for (var i = 0, len = latlngs.length; i < len; i++) {
this.extend(latlngs[i]);
}
};
L.LatLngBounds.prototype = {
// extend the bounds to contain the given point or bounds
extend: function (obj) { // (LatLng) or (LatLngBounds)
if (!obj) { return this; }
var latLng = L.latLng(obj);
if (latLng !== null) {
obj = latLng;
} else {
obj = L.latLngBounds(obj);
}
if (obj instanceof L.LatLng) {
if (!this._southWest && !this._northEast) {
this._southWest = new L.LatLng(obj.lat, obj.lng);
this._northEast = new L.LatLng(obj.lat, obj.lng);
} else {
this._southWest.lat = Math.min(obj.lat, this._southWest.lat);
this._southWest.lng = Math.min(obj.lng, this._southWest.lng);
this._northEast.lat = Math.max(obj.lat, this._northEast.lat);
this._northEast.lng = Math.max(obj.lng, this._northEast.lng);
}
} else if (obj instanceof L.LatLngBounds) {
this.extend(obj._southWest);
this.extend(obj._northEast);
}
return this;
},
// extend the bounds by a percentage
pad: function (bufferRatio) { // (Number) -> LatLngBounds
var sw = this._southWest,
ne = this._northEast,
heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio,
widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio;
return new L.LatLngBounds(
new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer),
new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer));
},
getCenter: function () { // -> LatLng
return new L.LatLng(
(this._southWest.lat + this._northEast.lat) / 2,
(this._southWest.lng + this._northEast.lng) / 2);
},
getSouthWest: function () {
return this._southWest;
},
getNorthEast: function () {
return this._northEast;
},
getNorthWest: function () {
return new L.LatLng(this.getNorth(), this.getWest());
},
getSouthEast: function () {
return new L.LatLng(this.getSouth(), this.getEast());
},
getWest: function () {
return this._southWest.lng;
},
getSouth: function () {
return this._southWest.lat;
},
getEast: function () {
return this._northEast.lng;
},
getNorth: function () {
return this._northEast.lat;
},
contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean
if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
obj = L.latLng(obj);
} else {
obj = L.latLngBounds(obj);
}
var sw = this._southWest,
ne = this._northEast,
sw2, ne2;
if (obj instanceof L.LatLngBounds) {
sw2 = obj.getSouthWest();
ne2 = obj.getNorthEast();
} else {
sw2 = ne2 = obj;
}
return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) &&
(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng);
},
intersects: function (bounds) { // (LatLngBounds)
bounds = L.latLngBounds(bounds);
var sw = this._southWest,
ne = this._northEast,
sw2 = bounds.getSouthWest(),
ne2 = bounds.getNorthEast(),
latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
return latIntersects && lngIntersects;
},
toBBoxString: function () {
return [this.getWest(), this.getSouth(), this.getEast(), this.getNorth()].join(',');
},
equals: function (bounds) { // (LatLngBounds)
if (!bounds) { return false; }
bounds = L.latLngBounds(bounds);
return this._southWest.equals(bounds.getSouthWest()) &&
this._northEast.equals(bounds.getNorthEast());
},
isValid: function () {
return !!(this._southWest && this._northEast);
}
};
//TODO International date line?
L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng)
if (!a || a instanceof L.LatLngBounds) {
return a;
}
return new L.LatLngBounds(a, b);
};
/*
* L.Projection contains various geographical projections used by CRS classes.
*/
L.Projection = {};
/*
* Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default.
*/
L.Projection.SphericalMercator = {
MAX_LATITUDE: 85.0511287798,
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),
x = latlng.lng * d,
y = lat * d;
y = Math.log(Math.tan((Math.PI / 4) + (y / 2)));
return new L.Point(x, y);
},
unproject: function (point) { // (Point, Boolean) -> LatLng
var d = L.LatLng.RAD_TO_DEG,
lng = point.x * d,
lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
return new L.LatLng(lat, lng);
}
};
/*
* Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple.
*/
L.Projection.LonLat = {
project: function (latlng) {
return new L.Point(latlng.lng, latlng.lat);
},
unproject: function (point) {
return new L.LatLng(point.y, point.x);
}
};
/*
* L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet.
*/
L.CRS = {
latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point
var projectedPoint = this.projection.project(latlng),
scale = this.scale(zoom);
return this.transformation._transform(projectedPoint, scale);
},
pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng
var scale = this.scale(zoom),
untransformedPoint = this.transformation.untransform(point, scale);
return this.projection.unproject(untransformedPoint);
},
project: function (latlng) {
return this.projection.project(latlng);
},
scale: function (zoom) {
return 256 * Math.pow(2, zoom);
},
getSize: function (zoom) {
var s = this.scale(zoom);
return L.point(s, s);
}
};
/*
* A simple CRS that can be used for flat non-Earth maps like panoramas or game maps.
*/
L.CRS.Simple = L.extend({}, L.CRS, {
projection: L.Projection.LonLat,
transformation: new L.Transformation(1, 0, -1, 0),
scale: function (zoom) {
return Math.pow(2, zoom);
}
});
/*
* L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping
* and is used by Leaflet by default.
*/
L.CRS.EPSG3857 = L.extend({}, L.CRS, {
code: 'EPSG:3857',
projection: L.Projection.SphericalMercator,
transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5),
project: function (latlng) { // (LatLng) -> Point
var projectedPoint = this.projection.project(latlng),
earthRadius = 6378137;
return projectedPoint.multiplyBy(earthRadius);
}
});
L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, {
code: 'EPSG:900913'
});
/*
* L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists.
*/
L.CRS.EPSG4326 = L.extend({}, L.CRS, {
code: 'EPSG:4326',
projection: L.Projection.LonLat,
transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5)
});
/*
* L.Map is the central class of the API - it is used to create a map.
*/
L.Map = L.Class.extend({
includes: L.Mixin.Events,
options: {
crs: L.CRS.EPSG3857,
/*
center: LatLng,
zoom: Number,
layers: Array,
*/
fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23,
trackResize: true,
markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d
},
initialize: function (id, options) { // (HTMLElement or String, Object)
options = L.setOptions(this, options);
this._initContainer(id);
this._initLayout();
// hack for https://github.com/Leaflet/Leaflet/issues/1980
this._onResize = L.bind(this._onResize, this);
this._initEvents();
if (options.maxBounds) {
this.setMaxBounds(options.maxBounds);
}
if (options.center && options.zoom !== undefined) {
this.setView(L.latLng(options.center), options.zoom, {reset: true});
}
this._handlers = [];
this._layers = {};
this._zoomBoundLayers = {};
this._tileLayersNum = 0;
this.callInitHooks();
this._addLayers(options.layers);
},
// public methods that modify map state
// replaced by animation-powered implementation in Map.PanAnimation.js
setView: function (center, zoom) {
zoom = zoom === undefined ? this.getZoom() : zoom;
this._resetView(L.latLng(center), this._limitZoom(zoom));
return this;
},
setZoom: function (zoom, options) {
if (!this._loaded) {
this._zoom = this._limitZoom(zoom);
return this;
}
return this.setView(this.getCenter(), zoom, {zoom: options});
},
zoomIn: function (delta, options) {
return this.setZoom(this._zoom + (delta || 1), options);
},
zoomOut: function (delta, options) {
return this.setZoom(this._zoom - (delta || 1), options);
},
setZoomAround: function (latlng, zoom, options) {
var scale = this.getZoomScale(zoom),
viewHalf = this.getSize().divideBy(2),
containerPoint = latlng instanceof L.Point ? latlng : this.latLngToContainerPoint(latlng),
centerOffset = containerPoint.subtract(viewHalf).multiplyBy(1 - 1 / scale),
newCenter = this.containerPointToLatLng(viewHalf.add(centerOffset));
return this.setView(newCenter, zoom, {zoom: options});
},
fitBounds: function (bounds, options) {
options = options || {};
bounds = bounds.getBounds ? bounds.getBounds() : L.latLngBounds(bounds);
var paddingTL = L.point(options.paddingTopLeft || options.padding || [0, 0]),
paddingBR = L.point(options.paddingBottomRight || options.padding || [0, 0]),
zoom = this.getBoundsZoom(bounds, false, paddingTL.add(paddingBR)),
paddingOffset = paddingBR.subtract(paddingTL).divideBy(2),
swPoint = this.project(bounds.getSouthWest(), zoom),
nePoint = this.project(bounds.getNorthEast(), zoom),
center = this.unproject(swPoint.add(nePoint).divideBy(2).add(paddingOffset), zoom);
zoom = options && options.maxZoom ? Math.min(options.maxZoom, zoom) : zoom;
return this.setView(center, zoom, options);
},
fitWorld: function (options) {
return this.fitBounds([[-90, -180], [90, 180]], options);
},
panTo: function (center, options) { // (LatLng)
return this.setView(center, this._zoom, {pan: options});
},
panBy: function (offset) { // (Point)
// replaced with animated panBy in Map.PanAnimation.js
this.fire('movestart');
this._rawPanBy(L.point(offset));
this.fire('move');
return this.fire('moveend');
},
setMaxBounds: function (bounds) {
bounds = L.latLngBounds(bounds);
this.options.maxBounds = bounds;
if (!bounds) {
return this.off('moveend', this._panInsideMaxBounds, this);
}
if (this._loaded) {
this._panInsideMaxBounds();
}
return this.on('moveend', this._panInsideMaxBounds, this);
},
panInsideBounds: function (bounds, options) {
var center = this.getCenter(),
newCenter = this._limitCenter(center, this._zoom, bounds);
if (center.equals(newCenter)) { return this; }
return this.panTo(newCenter, options);
},
addLayer: function (layer) {
// TODO method is too big, refactor
var id = L.stamp(layer);
if (this._layers[id]) { return this; }
this._layers[id] = layer;
// TODO getMaxZoom, getMinZoom in ILayer (instead of options)
if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) {
this._zoomBoundLayers[id] = layer;
this._updateZoomLevels();
}
// TODO looks ugly, refactor!!!
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
this._tileLayersNum++;
this._tileLayersToLoad++;
layer.on('load', this._onTileLayerLoad, this);
}
if (this._loaded) {
this._layerAdd(layer);
}
return this;
},
removeLayer: function (layer) {
var id = L.stamp(layer);
if (!this._layers[id]) { return this; }
if (this._loaded) {
layer.onRemove(this);
}
delete this._layers[id];
if (this._loaded) {
this.fire('layerremove', {layer: layer});
}
if (this._zoomBoundLayers[id]) {
delete this._zoomBoundLayers[id];
this._updateZoomLevels();
}
// TODO looks ugly, refactor
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
this._tileLayersNum--;
this._tileLayersToLoad--;
layer.off('load', this._onTileLayerLoad, this);
}
return this;
},
hasLayer: function (layer) {
if (!layer) { return false; }
return (L.stamp(layer) in this._layers);
},
eachLayer: function (method, context) {
for (var i in this._layers) {
method.call(context, this._layers[i]);
}
return this;
},
invalidateSize: function (options) {
if (!this._loaded) { return this; }
options = L.extend({
animate: false,
pan: true
}, options === true ? {animate: true} : options);
var oldSize = this.getSize();
this._sizeChanged = true;
this._initialCenter = null;
var newSize = this.getSize(),
oldCenter = oldSize.divideBy(2).round(),
newCenter = newSize.divideBy(2).round(),
offset = oldCenter.subtract(newCenter);
if (!offset.x && !offset.y) { return this; }
if (options.animate && options.pan) {
this.panBy(offset);
} else {
if (options.pan) {
this._rawPanBy(offset);
}
this.fire('move');
if (options.debounceMoveend) {
clearTimeout(this._sizeTimer);
this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200);
} else {
this.fire('moveend');
}
}
return this.fire('resize', {
oldSize: oldSize,
newSize: newSize
});
},
// TODO handler.addTo
addHandler: function (name, HandlerClass) {
if (!HandlerClass) { return this; }
var handler = this[name] = new HandlerClass(this);
this._handlers.push(handler);
if (this.options[name]) {
handler.enable();
}
return this;
},
remove: function () {
if (this._loaded) {
this.fire('unload');
}
this._initEvents('off');
try {
// throws error in IE6-8
delete this._container._leaflet;
} catch (e) {
this._container._leaflet = undefined;
}
this._clearPanes();
if (this._clearControlPos) {
this._clearControlPos();
}
this._clearHandlers();
return this;
},
// public methods for getting map state
getCenter: function () { // (Boolean) -> LatLng
this._checkIfLoaded();
if (this._initialCenter && !this._moved()) {
return this._initialCenter;
}
return this.layerPointToLatLng(this._getCenterLayerPoint());
},
getZoom: function () {
return this._zoom;
},
getBounds: function () {
var bounds = this.getPixelBounds(),
sw = this.unproject(bounds.getBottomLeft()),
ne = this.unproject(bounds.getTopRight());
return new L.LatLngBounds(sw, ne);
},
getMinZoom: function () {
return this.options.minZoom === undefined ?
(this._layersMinZoom === undefined ? 0 : this._layersMinZoom) :
this.options.minZoom;
},
getMaxZoom: function () {
return this.options.maxZoom === undefined ?
(this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom) :
this.options.maxZoom;
},
getBoundsZoom: function (bounds, inside, padding) { // (LatLngBounds[, Boolean, Point]) -> Number
bounds = L.latLngBounds(bounds);
var zoom = this.getMinZoom() - (inside ? 1 : 0),
maxZoom = this.getMaxZoom(),
size = this.getSize(),
nw = bounds.getNorthWest(),
se = bounds.getSouthEast(),
zoomNotFound = true,
boundsSize;
padding = L.point(padding || [0, 0]);
do {
zoom++;
boundsSize = this.project(se, zoom).subtract(this.project(nw, zoom)).add(padding);
zoomNotFound = !inside ? size.contains(boundsSize) : boundsSize.x < size.x || boundsSize.y < size.y;
} while (zoomNotFound && zoom <= maxZoom);
if (zoomNotFound && inside) {
return null;
}
return inside ? zoom : zoom - 1;
},
getSize: function () {
if (!this._size || this._sizeChanged) {
this._size = new L.Point(
this._container.clientWidth,
this._container.clientHeight);
this._sizeChanged = false;
}
return this._size.clone();
},
getPixelBounds: function () {
var topLeftPoint = this._getTopLeftPoint();
return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
},
getPixelOrigin: function () {
this._checkIfLoaded();
return this._initialTopLeftPoint;
},
getPanes: function () {
return this._panes;
},
getContainer: function () {
return this._container;
},
// TODO replace with universal implementation after refactoring projections
getZoomScale: function (toZoom) {
var crs = this.options.crs;
return crs.scale(toZoom) / crs.scale(this._zoom);
},
getScaleZoom: function (scale) {
return this._zoom + (Math.log(scale) / Math.LN2);
},
// conversion methods
project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
zoom = zoom === undefined ? this._zoom : zoom;
return this.options.crs.latLngToPoint(L.latLng(latlng), zoom);
},
unproject: function (point, zoom) { // (Point[, Number]) -> LatLng
zoom = zoom === undefined ? this._zoom : zoom;
return this.options.crs.pointToLatLng(L.point(point), zoom);
},
layerPointToLatLng: function (point) { // (Point)
var projectedPoint = L.point(point).add(this.getPixelOrigin());
return this.unproject(projectedPoint);
},
latLngToLayerPoint: function (latlng) { // (LatLng)
var projectedPoint = this.project(L.latLng(latlng))._round();
return projectedPoint._subtract(this.getPixelOrigin());
},
containerPointToLayerPoint: function (point) { // (Point)
return L.point(point).subtract(this._getMapPanePos());
},
layerPointToContainerPoint: function (point) { // (Point)
return L.point(point).add(this._getMapPanePos());
},
containerPointToLatLng: function (point) {
var layerPoint = this.containerPointToLayerPoint(L.point(point));
return this.layerPointToLatLng(layerPoint);
},
latLngToContainerPoint: function (latlng) {
return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng)));
},
mouseEventToContainerPoint: function (e) { // (MouseEvent)
return L.DomEvent.getMousePosition(e, this._container);
},
mouseEventToLayerPoint: function (e) { // (MouseEvent)
return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
},
mouseEventToLatLng: function (e) { // (MouseEvent)
return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
},
// map initialization methods
_initContainer: function (id) {
var container = this._container = L.DomUtil.get(id);
if (!container) {
throw new Error('Map container not found.');
} else if (container._leaflet) {
throw new Error('Map container is already initialized.');
}
container._leaflet = true;
},
_initLayout: function () {
var container = this._container;
L.DomUtil.addClass(container, 'leaflet-container' +
(L.Browser.touch ? ' leaflet-touch' : '') +
(L.Browser.retina ? ' leaflet-retina' : '') +
(L.Browser.ielt9 ? ' leaflet-oldie' : '') +
(this.options.fadeAnimation ? ' leaflet-fade-anim' : ''));
var position = L.DomUtil.getStyle(container, 'position');
if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') {
container.style.position = 'relative';
}
this._initPanes();
if (this._initControlPos) {
this._initControlPos();
}
},
_initPanes: function () {
var panes = this._panes = {};
this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
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');
var zoomHide = ' leaflet-zoom-hide';
if (!this.options.markerZoomAnimation) {
L.DomUtil.addClass(panes.markerPane, zoomHide);
L.DomUtil.addClass(panes.shadowPane, zoomHide);
L.DomUtil.addClass(panes.popupPane, zoomHide);
}
},
_createPane: function (className, container) {
return L.DomUtil.create('div', className, container || this._panes.objectsPane);
},
_clearPanes: function () {
this._container.removeChild(this._mapPane);
},
_addLayers: function (layers) {
layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : [];
for (var i = 0, len = layers.length; i < len; i++) {
this.addLayer(layers[i]);
}
},
// private methods that modify map state
_resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
var zoomChanged = (this._zoom !== zoom);
if (!afterZoomAnim) {
this.fire('movestart');
if (zoomChanged) {
this.fire('zoomstart');
}
}
this._zoom = zoom;
this._initialCenter = center;
this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
if (!preserveMapOffset) {
L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
} else {
this._initialTopLeftPoint._add(this._getMapPanePos());
}
this._tileLayersToLoad = this._tileLayersNum;
var loading = !this._loaded;
this._loaded = true;
this.fire('viewreset', {hard: !preserveMapOffset});
if (loading) {
this.fire('load');
this.eachLayer(this._layerAdd, this);
}
this.fire('move');
if (zoomChanged || afterZoomAnim) {
this.fire('zoomend');
}
this.fire('moveend', {hard: !preserveMapOffset});
},
_rawPanBy: function (offset) {
L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
},
_getZoomSpan: function () {
return this.getMaxZoom() - this.getMinZoom();
},
_updateZoomLevels: function () {
var i,
minZoom = Infinity,
maxZoom = -Infinity,
oldZoomSpan = this._getZoomSpan();
for (i in this._zoomBoundLayers) {
var layer = this._zoomBoundLayers[i];
if (!isNaN(layer.options.minZoom)) {
minZoom = Math.min(minZoom, layer.options.minZoom);
}
if (!isNaN(layer.options.maxZoom)) {
maxZoom = Math.max(maxZoom, layer.options.maxZoom);
}
}
if (i === undefined) { // we have no tilelayers
this._layersMaxZoom = this._layersMinZoom = undefined;
} else {
this._layersMaxZoom = maxZoom;
this._layersMinZoom = minZoom;
}
if (oldZoomSpan !== this._getZoomSpan()) {
this.fire('zoomlevelschange');
}
},
_panInsideMaxBounds: function () {
this.panInsideBounds(this.options.maxBounds);
},
_checkIfLoaded: function () {
if (!this._loaded) {
throw new Error('Set map center and zoom first.');
}
},
// map events
_initEvents: function (onOff) {
if (!L.DomEvent) { return; }
onOff = onOff || 'on';
L.DomEvent[onOff](this._container, 'click', this._onMouseClick, this);
var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter',
'mouseleave', 'mousemove', 'contextmenu'],
i, len;
for (i = 0, len = events.length; i < len; i++) {
L.DomEvent[onOff](this._container, events[i], this._fireMouseEvent, this);
}
if (this.options.trackResize) {
L.DomEvent[onOff](window, 'resize', this._onResize, this);
}
},
_onResize: function () {
L.Util.cancelAnimFrame(this._resizeRequest);
this._resizeRequest = L.Util.requestAnimFrame(
function () { this.invalidateSize({debounceMoveend: true}); }, this, false, this._container);
},
_onMouseClick: function (e) {
if (!this._loaded || (!e._simulated &&
((this.dragging && this.dragging.moved()) ||
(this.boxZoom && this.boxZoom.moved()))) ||
L.DomEvent._skipped(e)) { return; }
this.fire('preclick');
this._fireMouseEvent(e);
},
_fireMouseEvent: function (e) {
if (!this._loaded || L.DomEvent._skipped(e)) { 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);
}
var containerPoint = this.mouseEventToContainerPoint(e),
layerPoint = this.containerPointToLayerPoint(containerPoint),
latlng = this.layerPointToLatLng(layerPoint);
this.fire(type, {
latlng: latlng,
layerPoint: layerPoint,
containerPoint: containerPoint,
originalEvent: e
});
},
_onTileLayerLoad: function () {
this._tileLayersToLoad--;
if (this._tileLayersNum && !this._tileLayersToLoad) {
this.fire('tilelayersload');
}
},
_clearHandlers: function () {
for (var i = 0, len = this._handlers.length; i < len; i++) {
this._handlers[i].disable();
}
},
whenReady: function (callback, context) {
if (this._loaded) {
callback.call(context || this, this);
} else {
this.on('load', callback, context);
}
return this;
},
_layerAdd: function (layer) {
layer.onAdd(this);
this.fire('layeradd', {layer: layer});
},
// private methods for getting map state
_getMapPanePos: function () {
return L.DomUtil.getPosition(this._mapPane);
},
_moved: function () {
var pos = this._getMapPanePos();
return pos && !pos.equals([0, 0]);
},
_getTopLeftPoint: function () {
return this.getPixelOrigin().subtract(this._getMapPanePos());
},
_getNewTopLeftPoint: function (center, zoom) {
var viewHalf = this.getSize()._divideBy(2);
// TODO round on display, not calculation to increase precision?
return this.project(center, zoom)._subtract(viewHalf)._round();
},
_latLngToNewLayerPoint: function (latlng, newZoom, newCenter) {
var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos());
return this.project(latlng, newZoom)._subtract(topLeft);
},
// layer point of the current center
_getCenterLayerPoint: function () {
return this.containerPointToLayerPoint(this.getSize()._divideBy(2));
},
// offset of the specified place to the current center in pixels
_getCenterOffset: function (latlng) {
return this.latLngToLayerPoint(latlng).subtract(this._getCenterLayerPoint());
},
// adjust center for view to get inside bounds
_limitCenter: function (center, zoom, bounds) {
if (!bounds) { return center; }
var centerPoint = this.project(center, zoom),
viewHalf = this.getSize().divideBy(2),
viewBounds = new L.Bounds(centerPoint.subtract(viewHalf), centerPoint.add(viewHalf)),
offset = this._getBoundsOffset(viewBounds, bounds, zoom);
return this.unproject(centerPoint.add(offset), zoom);
},
// adjust offset for view to get inside bounds
_limitOffset: function (offset, bounds) {
if (!bounds) { return offset; }
var viewBounds = this.getPixelBounds(),
newBounds = new L.Bounds(viewBounds.min.add(offset), viewBounds.max.add(offset));
return offset.add(this._getBoundsOffset(newBounds, bounds));
},
// returns offset needed for pxBounds to get inside maxBounds at a specified zoom
_getBoundsOffset: function (pxBounds, maxBounds, zoom) {
var nwOffset = this.project(maxBounds.getNorthWest(), zoom).subtract(pxBounds.min),
seOffset = this.project(maxBounds.getSouthEast(), zoom).subtract(pxBounds.max),
dx = this._rebound(nwOffset.x, -seOffset.x),
dy = this._rebound(nwOffset.y, -seOffset.y);
return new L.Point(dx, dy);
},
_rebound: function (left, right) {
return left + right > 0 ?
Math.round(left - right) / 2 :
Math.max(0, Math.ceil(left)) - Math.max(0, Math.floor(right));
},
_limitZoom: function (zoom) {
var min = this.getMinZoom(),
max = this.getMaxZoom();
return Math.max(min, Math.min(max, zoom));
}
});
L.map = function (id, options) {
return new L.Map(id, options);
};
/*
* Mercator projection that takes into account that the Earth is not a perfect sphere.
* Less popular than spherical mercator; used by projections like EPSG:3395.
*/
L.Projection.Mercator = {
MAX_LATITUDE: 85.0840591556,
R_MINOR: 6356752.314245179,
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 = -r * Math.log(ts);
return new L.Point(x, y);
},
unproject: function (point) { // (Point, Boolean) -> 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 / r),
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);
}
};
L.CRS.EPSG3395 = L.extend({}, L.CRS, {
code: 'EPSG:3395',
projection: L.Projection.Mercator,
transformation: (function () {
var m = L.Projection.Mercator,
r = m.R_MAJOR,
scale = 0.5 / (Math.PI * r);
return new L.Transformation(scale, 0.5, -scale, 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: '',
zoomOffset: 0,
opacity: 1,
/*
maxNativeZoom: null,
zIndex: null,
tms: false,
continuousWorld: false,
noWrap: false,
zoomReverse: false,
detectRetina: false,
reuseTiles: false,
bounds: false,
*/
unloadInvisibleTiles: L.Browser.mobile,
updateWhenIdle: L.Browser.mobile
},
initialize: function (url, options) {
options = L.setOptions(this, options);
// detecting retina displays, adjusting tileSize and zoom levels
if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) {
options.tileSize = Math.floor(options.tileSize / 2);
options.zoomOffset++;
if (options.minZoom > 0) {
options.minZoom--;
}
this.options.maxZoom--;
}
if (options.bounds) {
options.bounds = L.latLngBounds(options.bounds);
}
this._url = url;
var subdomains = this.options.subdomains;
if (typeof subdomains === 'string') {
this.options.subdomains = subdomains.split('');
}
},
onAdd: function (map) {
this._map = map;
this._animated = map._zoomAnimated;
// create a container div for tiles
this._initContainer();
// set up events
map.on({
'viewreset': this._reset,
'moveend': this._update
}, this);
if (this._animated) {
map.on({
'zoomanim': this._animateZoom,
'zoomend': this._endZoomAnim
}, this);
}
if (!this.options.updateWhenIdle) {
this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
map.on('move', this._limitedUpdate, this);
}
this._reset();
this._update();
},
addTo: function (map) {
map.addLayer(this);
return this;
},
onRemove: function (map) {
this._container.parentNode.removeChild(this._container);
map.off({
'viewreset': this._reset,
'moveend': this._update
}, this);
if (this._animated) {
map.off({
'zoomanim': this._animateZoom,
'zoomend': this._endZoomAnim
}, this);
}
if (!this.options.updateWhenIdle) {
map.off('move', this._limitedUpdate, this);
}
this._container = null;
this._map = null;
},
bringToFront: function () {
var pane = this._map._panes.tilePane;
if (this._container) {
pane.appendChild(this._container);
this._setAutoZIndex(pane, Math.max);
}
return this;
},
bringToBack: function () {
var pane = this._map._panes.tilePane;
if (this._container) {
pane.insertBefore(this._container, pane.firstChild);
this._setAutoZIndex(pane, Math.min);
}
return this;
},
getAttribution: function () {
return this.options.attribution;
},
getContainer: function () {
return this._container;
},
setOpacity: function (opacity) {
this.options.opacity = opacity;
if (this._map) {
this._updateOpacity();
}
return this;
},
setZIndex: function (zIndex) {
this.options.zIndex = zIndex;
this._updateZIndex();
return this;
},
setUrl: function (url, noRedraw) {
this._url = url;
if (!noRedraw) {
this.redraw();
}
return this;
},
redraw: function () {
if (this._map) {
this._reset({hard: true});
this._update();
}
return this;
},
_updateZIndex: function () {
if (this._container && this.options.zIndex !== undefined) {
this._container.style.zIndex = this.options.zIndex;
}
},
_setAutoZIndex: function (pane, compare) {
var layers = pane.children,
edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min
zIndex, i, len;
for (i = 0, len = layers.length; i < len; i++) {
if (layers[i] !== this._container) {
zIndex = parseInt(layers[i].style.zIndex, 10);
if (!isNaN(zIndex)) {
edgeZIndex = compare(edgeZIndex, zIndex);
}
}
}
this.options.zIndex = this._container.style.zIndex =
(isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1);
},
_updateOpacity: function () {
var i,
tiles = this._tiles;
if (L.Browser.ielt9) {
for (i in tiles) {
L.DomUtil.setOpacity(tiles[i], this.options.opacity);
}
} else {
L.DomUtil.setOpacity(this._container, this.options.opacity);
}
},
_initContainer: function () {
var tilePane = this._map._panes.tilePane;
if (!this._container) {
this._container = L.DomUtil.create('div', 'leaflet-layer');
this._updateZIndex();
if (this._animated) {
var className = 'leaflet-tile-container';
this._bgBuffer = L.DomUtil.create('div', className, this._container);
this._tileContainer = L.DomUtil.create('div', className, this._container);
} else {
this._tileContainer = this._container;
}
tilePane.appendChild(this._container);
if (this.options.opacity < 1) {
this._updateOpacity();
}
}
},
_reset: function (e) {
for (var key in this._tiles) {
this.fire('tileunload', {tile: this._tiles[key]});
}
this._tiles = {};
this._tilesToLoad = 0;
if (this.options.reuseTiles) {
this._unusedTiles = [];
}
this._tileContainer.innerHTML = '';
if (this._animated && e && e.hard) {
this._clearBgBuffer();
}
this._initContainer();
},
_getTileSize: function () {
var map = this._map,
zoom = map.getZoom() + this.options.zoomOffset,
zoomN = this.options.maxNativeZoom,
tileSize = this.options.tileSize;
if (zoomN && zoom > zoomN) {
tileSize = Math.round(map.getZoomScale(zoom) / map.getZoomScale(zoomN) * tileSize);
}
return tileSize;
},
_update: function () {
if (!this._map) { return; }
var map = this._map,
bounds = map.getPixelBounds(),
zoom = map.getZoom(),
tileSize = this._getTileSize();
if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
return;
}
var tileBounds = L.bounds(
bounds.min.divideBy(tileSize)._floor(),
bounds.max.divideBy(tileSize)._floor());
this._addTilesFromCenterOut(tileBounds);
if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
this._removeOtherTiles(tileBounds);
}
},
_addTilesFromCenterOut: function (bounds) {
var queue = [],
center = bounds.getCenter();
var j, i, point;
for (j = bounds.min.y; j <= bounds.max.y; j++) {
for (i = bounds.min.x; i <= bounds.max.x; i++) {
point = new L.Point(i, j);
if (this._tileShouldBeLoaded(point)) {
queue.push(point);
}
}
}
var tilesToLoad = queue.length;
if (tilesToLoad === 0) { return; }
// 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();
// if its the first batch of tiles to load
if (!this._tilesToLoad) {
this.fire('loading');
}
this._tilesToLoad += tilesToLoad;
for (i = 0; i < tilesToLoad; i++) {
this._addTile(queue[i], fragment);
}
this._tileContainer.appendChild(fragment);
},
_tileShouldBeLoaded: function (tilePoint) {
if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
return false; // already loaded
}
var options = this.options;
if (!options.continuousWorld) {
var limit = this._getWrapTileNum();
// don't load if exceeds world bounds
if ((options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit.x)) ||
tilePoint.y < 0 || tilePoint.y >= limit.y) { return false; }
}
if (options.bounds) {
var tileSize = options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add([tileSize, tileSize]),
nw = this._map.unproject(nwPoint),
se = this._map.unproject(sePoint);
// TODO temporary hack, will be removed after refactoring projections
// https://github.com/Leaflet/Leaflet/issues/1618
if (!options.continuousWorld && !options.noWrap) {
nw = nw.wrap();
se = se.wrap();
}
if (!options.bounds.intersects([nw, se])) { return false; }
}
return true;
},
_removeOtherTiles: function (bounds) {
var kArr, x, y, key;
for (key in this._tiles) {
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) {
this._removeTile(key);
}
}
},
_removeTile: function (key) {
var tile = this._tiles[key];
this.fire('tileunload', {tile: tile, url: tile.src});
if (this.options.reuseTiles) {
L.DomUtil.removeClass(tile, 'leaflet-tile-loaded');
this._unusedTiles.push(tile);
} else if (tile.parentNode === this._tileContainer) {
this._tileContainer.removeChild(tile);
}
// for https://github.com/CloudMade/Leaflet/issues/137
if (!L.Browser.android) {
tile.onload = null;
tile.src = L.Util.emptyImageUrl;
}
delete this._tiles[key];
},
_addTile: function (tilePoint, container) {
var tilePos = this._getTilePos(tilePoint);
// get unused tile - or create a new tile
var tile = this._getTile();
/*
Chrome 20 layouts much faster with top/left (verify with timeline, frames)
Android 4 browser has display issues with top/left and requires transform instead
(other browsers don't currently care) - see debug/hacks/jitter.html for an example
*/
L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome);
this._tiles[tilePoint.x + ':' + tilePoint.y] = tile;
this._loadTile(tile, tilePoint);
if (tile.parentNode !== this._tileContainer) {
container.appendChild(tile);
}
},
_getZoomForUrl: function () {
var options = this.options,
zoom = this._map.getZoom();
if (options.zoomReverse) {
zoom = options.maxZoom - zoom;
}
zoom += options.zoomOffset;
return options.maxNativeZoom ? Math.min(zoom, options.maxNativeZoom) : zoom;
},
_getTilePos: function (tilePoint) {
var origin = this._map.getPixelOrigin(),
tileSize = this._getTileSize();
return tilePoint.multiplyBy(tileSize).subtract(origin);
},
// image-specific code (override to implement e.g. Canvas or SVG tile layer)
getTileUrl: function (tilePoint) {
return L.Util.template(this._url, L.extend({
s: this._getSubdomain(tilePoint),
z: tilePoint.z,
x: tilePoint.x,
y: tilePoint.y
}, this.options));
},
_getWrapTileNum: function () {
var crs = this._map.options.crs,
size = crs.getSize(this._map.getZoom());
return size.divideBy(this._getTileSize())._floor();
},
_adjustTilePoint: function (tilePoint) {
var limit = this._getWrapTileNum();
// wrap tile coordinates
if (!this.options.continuousWorld && !this.options.noWrap) {
tilePoint.x = ((tilePoint.x % limit.x) + limit.x) % limit.x;
}
if (this.options.tms) {
tilePoint.y = limit.y - tilePoint.y - 1;
}
tilePoint.z = this._getZoomForUrl();
},
_getSubdomain: function (tilePoint) {
var index = Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length;
return this.options.subdomains[index];
},
_getTile: function () {
if (this.options.reuseTiles && this._unusedTiles.length > 0) {
var tile = this._unusedTiles.pop();
this._resetTile(tile);
return tile;
}
return this._createTile();
},
// Override if data stored on a tile needs to be cleaned up before reuse
_resetTile: function (/*tile*/) {},
_createTile: function () {
var tile = L.DomUtil.create('img', 'leaflet-tile');
tile.style.width = tile.style.height = this._getTileSize() + 'px';
tile.galleryimg = 'no';
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
if (L.Browser.ielt9 && this.options.opacity !== undefined) {
L.DomUtil.setOpacity(tile, this.options.opacity);
}
// without this hack, tiles disappear after zoom on Chrome for Android
// https://github.com/Leaflet/Leaflet/issues/2078
if (L.Browser.mobileWebkit3d) {
tile.style.WebkitBackfaceVisibility = 'hidden';
}
return tile;
},
_loadTile: function (tile, tilePoint) {
tile._layer = this;
tile.onload = this._tileOnLoad;
tile.onerror = this._tileOnError;
this._adjustTilePoint(tilePoint);
tile.src = this.getTileUrl(tilePoint);
this.fire('tileloadstart', {
tile: tile,
url: tile.src
});
},
_tileLoaded: function () {
this._tilesToLoad--;
if (this._animated) {
L.DomUtil.addClass(this._tileContainer, 'leaflet-zoom-animated');
}
if (!this._tilesToLoad) {
this.fire('load');
if (this._animated) {
// clear scaled tiles after all new tiles are loaded (for performance)
clearTimeout(this._clearBgBufferTimer);
this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 500);
}
}
},
_tileOnLoad: function () {
var layer = this._layer;
//Only if we are loading an actual image
if (this.src !== L.Util.emptyImageUrl) {
L.DomUtil.addClass(this, 'leaflet-tile-loaded');
layer.fire('tileload', {
tile: this,
url: this.src
});
}
layer._tileLoaded();
},
_tileOnError: function () {
var layer = this._layer;
layer.fire('tileerror', {
tile: this,
url: this.src
});
var newUrl = layer.options.errorTileUrl;
if (newUrl) {
this.src = newUrl;
}
layer._tileLoaded();
}
});
L.tileLayer = function (url, options) {
return new L.TileLayer(url, options);
};
/*
* L.TileLayer.WMS is used for putting WMS tile layers on the map.
*/
L.TileLayer.WMS = L.TileLayer.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
layers: '',
styles: '',
format: 'image/jpeg',
transparent: false
},
initialize: function (url, options) { // (String, Object)
this._url = url;
var wmsParams = L.extend({}, this.defaultWmsParams),
tileSize = options.tileSize || this.options.tileSize;
if (options.detectRetina && L.Browser.retina) {
wmsParams.width = wmsParams.height = tileSize * 2;
} else {
wmsParams.width = wmsParams.height = tileSize;
}
for (var i in options) {
// all keys that are not TileLayer options go to WMS params
if (!this.options.hasOwnProperty(i) && i !== 'crs') {
wmsParams[i] = options[i];
}
}
this.wmsParams = wmsParams;
L.setOptions(this, options);
},
onAdd: function (map) {
this._crs = this.options.crs || map.options.crs;
this._wmsVersion = parseFloat(this.wmsParams.version);
var projectionKey = this._wmsVersion >= 1.3 ? 'crs' : 'srs';
this.wmsParams[projectionKey] = this._crs.code;
L.TileLayer.prototype.onAdd.call(this, map);
},
getTileUrl: function (tilePoint) { // (Point, Number) -> String
var map = this._map,
tileSize = this.options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add([tileSize, tileSize]),
nw = this._crs.project(map.unproject(nwPoint, tilePoint.z)),
se = this._crs.project(map.unproject(sePoint, tilePoint.z)),
bbox = this._wmsVersion >= 1.3 && this._crs === L.CRS.EPSG4326 ?
[se.y, nw.x, nw.y, se.x].join(',') :
[nw.x, se.y, se.x, nw.y].join(','),
url = L.Util.template(this._url, {s: this._getSubdomain(tilePoint)});
return url + L.Util.getParamString(this.wmsParams, url, true) + '&BBOX=' + bbox;
},
setParams: function (params, noRedraw) {
L.extend(this.wmsParams, params);
if (!noRedraw) {
this.redraw();
}
return this;
}
});
L.tileLayer.wms = function (url, options) {
return new L.TileLayer.WMS(url, options);
};
/*
* L.TileLayer.Canvas is a class that you can use as a base for creating
* dynamically drawn Canvas-based tile layers.
*/
L.TileLayer.Canvas = L.TileLayer.extend({
options: {
async: false
},
initialize: function (options) {
L.setOptions(this, options);
},
redraw: function () {
if (this._map) {
this._reset({hard: true});
this._update();
}
for (var i in this._tiles) {
this._redrawTile(this._tiles[i]);
}
return this;
},
_redrawTile: function (tile) {
this.drawTile(tile, tile._tilePoint, this._map._zoom);
},
_createTile: function () {
var tile = L.DomUtil.create('canvas', 'leaflet-tile');
tile.width = tile.height = this.options.tileSize;
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
return tile;
},
_loadTile: function (tile, tilePoint) {
tile._layer = this;
tile._tilePoint = tilePoint;
this._redrawTile(tile);
if (!this.options.async) {
this.tileDrawn(tile);
}
},
drawTile: function (/*tile, tilePoint*/) {
// override with rendering code
},
tileDrawn: function (tile) {
this._tileOnLoad.call(tile);
}
});
L.tileLayer.canvas = function (options) {
return new L.TileLayer.Canvas(options);
};
/*
* L.ImageOverlay is used to overlay images over the map (to specific geographical bounds).
*/
L.ImageOverlay = L.Class.extend({
includes: L.Mixin.Events,
options: {
opacity: 1
},
initialize: function (url, bounds, options) { // (String, LatLngBounds, Object)
this._url = url;
this._bounds = L.latLngBounds(bounds);
L.setOptions(this, options);
},
onAdd: function (map) {
this._map = map;
if (!this._image) {
this._initImage();
}
map._panes.overlayPane.appendChild(this._image);
map.on('viewreset', this._reset, this);
if (map.options.zoomAnimation && L.Browser.any3d) {
map.on('zoomanim', this._animateZoom, this);
}
this._reset();
},
onRemove: function (map) {
map.getPanes().overlayPane.removeChild(this._image);
map.off('viewreset', this._reset, this);
if (map.options.zoomAnimation) {
map.off('zoomanim', this._animateZoom, this);
}
},
addTo: function (map) {
map.addLayer(this);
return this;
},
setOpacity: function (opacity) {
this.options.opacity = opacity;
this._updateOpacity();
return this;
},
// TODO remove bringToFront/bringToBack duplication from TileLayer/Path
bringToFront: function () {
if (this._image) {
this._map._panes.overlayPane.appendChild(this._image);
}
return this;
},
bringToBack: function () {
var pane = this._map._panes.overlayPane;
if (this._image) {
pane.insertBefore(this._image, pane.firstChild);
}
return this;
},
setUrl: function (url) {
this._url = url;
this._image.src = this._url;
},
getAttribution: function () {
return this.options.attribution;
},
_initImage: function () {
this._image = L.DomUtil.create('img', 'leaflet-image-layer');
if (this._map.options.zoomAnimation && L.Browser.any3d) {
L.DomUtil.addClass(this._image, 'leaflet-zoom-animated');
} else {
L.DomUtil.addClass(this._image, 'leaflet-zoom-hide');
}
this._updateOpacity();
//TODO createImage util method to remove duplication
L.extend(this._image, {
galleryimg: 'no',
onselectstart: L.Util.falseFn,
onmousemove: L.Util.falseFn,
onload: L.bind(this._onImageLoad, this),
src: this._url
});
},
_animateZoom: function (e) {
var map = this._map,
image = this._image,
scale = map.getZoomScale(e.zoom),
nw = this._bounds.getNorthWest(),
se = this._bounds.getSouthEast(),
topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center),
size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft),
origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale)));
image.style[L.DomUtil.TRANSFORM] =
L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') ';
},
_reset: function () {
var image = this._image,
topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft);
L.DomUtil.setPosition(image, topLeft);
image.style.width = size.x + 'px';
image.style.height = size.y + 'px';
},
_onImageLoad: function () {
this.fire('load');
},
_updateOpacity: function () {
L.DomUtil.setOpacity(this._image, this.options.opacity);
}
});
L.imageOverlay = function (url, bounds, options) {
return new L.ImageOverlay(url, bounds, options);
};
/*
* L.Icon is an image-based icon class that you can use with L.Marker for custom markers.
*/
L.Icon = L.Class.extend({
options: {
/*
iconUrl: (String) (required)
iconRetinaUrl: (String) (optional, used for retina devices if detected)
iconSize: (Point) (can be set through CSS)
iconAnchor: (Point) (centered by default, can be set in CSS with negative margins)
popupAnchor: (Point) (if not specified, popup opens in the anchor point)
shadowUrl: (String) (no shadow by default)
shadowRetinaUrl: (String) (optional, used for retina devices if detected)
shadowSize: (Point)
shadowAnchor: (Point)
*/
className: ''
},
initialize: function (options) {
L.setOptions(this, options);
},
createIcon: function (oldIcon) {
return this._createIcon('icon', oldIcon);
},
createShadow: function (oldIcon) {
return this._createIcon('shadow', oldIcon);
},
_createIcon: function (name, oldIcon) {
var src = this._getIconUrl(name);
if (!src) {
if (name === 'icon') {
throw new Error('iconUrl not set in Icon options (see the docs).');
}
return null;
}
var img;
if (!oldIcon || oldIcon.tagName !== 'IMG') {
img = this._createImg(src);
} else {
img = this._createImg(src, oldIcon);
}
this._setIconStyles(img, name);
return img;
},
_setIconStyles: function (img, name) {
var options = this.options,
size = L.point(options[name + 'Size']),
anchor;
if (name === 'shadow') {
anchor = L.point(options.shadowAnchor || options.iconAnchor);
} else {
anchor = L.point(options.iconAnchor);
}
if (!anchor && size) {
anchor = size.divideBy(2, true);
}
img.className = 'leaflet-marker-' + name + ' ' + options.className;
if (anchor) {
img.style.marginLeft = (-anchor.x) + 'px';
img.style.marginTop = (-anchor.y) + 'px';
}
if (size) {
img.style.width = size.x + 'px';
img.style.height = size.y + 'px';
}
},
_createImg: function (src, el) {
el = el || document.createElement('img');
el.src = src;
return el;
},
_getIconUrl: function (name) {
if (L.Browser.retina && this.options[name + 'RetinaUrl']) {
return this.options[name + 'RetinaUrl'];
}
return this.options[name + 'Url'];
}
});
L.icon = function (options) {
return new L.Icon(options);
};
/*
* L.Icon.Default is the blue marker icon used by default in Leaflet.
*/
L.Icon.Default = L.Icon.extend({
options: {
iconSize: [25, 41],
iconAnchor: [12, 41],
popupAnchor: [1, -34],
shadowSize: [41, 41]
},
_getIconUrl: function (name) {
var key = name + 'Url';
if (this.options[key]) {
return this.options[key];
}
if (L.Browser.retina && name === 'icon') {
name += '-2x';
}
var path = L.Icon.Default.imagePath;
if (!path) {
throw new Error('Couldn\'t autodetect L.Icon.Default.imagePath, set it manually.');
}
return path + '/marker-' + name + '.png';
}
});
L.Icon.Default.imagePath = (function () {
var scripts = document.getElementsByTagName('script'),
leafletRe = /[\/^]leaflet[\-\._]?([\w\-\._]*)\.js\??/;
var i, len, src, matches, path;
for (i = 0, len = scripts.length; i < len; i++) {
src = scripts[i].src;
matches = src.match(leafletRe);
if (matches) {
path = src.split(leafletRe)[0];
return (path ? path + '/' : '') + 'images';
}
}
}());
/*
* 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.Default(),
title: '',
alt: '',
clickable: true,
draggable: false,
keyboard: true,
zIndexOffset: 0,
opacity: 1,
riseOnHover: false,
riseOffset: 250
},
initialize: function (latlng, options) {
L.setOptions(this, options);
this._latlng = L.latLng(latlng);
},
onAdd: function (map) {
this._map = map;
map.on('viewreset', this.update, this);
this._initIcon();
this.update();
this.fire('add');
if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
map.on('zoomanim', this._animateZoom, this);
}
},
addTo: function (map) {
map.addLayer(this);
return this;
},
onRemove: function (map) {
if (this.dragging) {
this.dragging.disable();
}
this._removeIcon();
this._removeShadow();
this.fire('remove');
map.off({
'viewreset': this.update,
'zoomanim': this._animateZoom
}, this);
this._map = null;
},
getLatLng: function () {
return this._latlng;
},
setLatLng: function (latlng) {
this._latlng = L.latLng(latlng);
this.update();
return this.fire('move', { latlng: this._latlng });
},
setZIndexOffset: function (offset) {
this.options.zIndexOffset = offset;
this.update();
return this;
},
setIcon: function (icon) {
this.options.icon = icon;
if (this._map) {
this._initIcon();
this.update();
}
if (this._popup) {
this.bindPopup(this._popup);
}
return this;
},
update: function () {
if (this._icon) {
var pos = this._map.latLngToLayerPoint(this._latlng).round();
this._setPos(pos);
}
return this;
},
_initIcon: function () {
var options = this.options,
map = this._map,
animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide';
var icon = options.icon.createIcon(this._icon),
addIcon = false;
// if we're not reusing the icon, remove the old one and init new one
if (icon !== this._icon) {
if (this._icon) {
this._removeIcon();
}
addIcon = true;
if (options.title) {
icon.title = options.title;
}
if (options.alt) {
icon.alt = options.alt;
}
}
L.DomUtil.addClass(icon, classToAdd);
if (options.keyboard) {
icon.tabIndex = '0';
}
this._icon = icon;
this._initInteraction();
if (options.riseOnHover) {
L.DomEvent
.on(icon, 'mouseover', this._bringToFront, this)
.on(icon, 'mouseout', this._resetZIndex, this);
}
var newShadow = options.icon.createShadow(this._shadow),
addShadow = false;
if (newShadow !== this._shadow) {
this._removeShadow();
addShadow = true;
}
if (newShadow) {
L.DomUtil.addClass(newShadow, classToAdd);
}
this._shadow = newShadow;
if (options.opacity < 1) {
this._updateOpacity();
}
var panes = this._map._panes;
if (addIcon) {
panes.markerPane.appendChild(this._icon);
}
if (newShadow && addShadow) {
panes.shadowPane.appendChild(this._shadow);
}
},
_removeIcon: function () {
if (this.options.riseOnHover) {
L.DomEvent
.off(this._icon, 'mouseover', this._bringToFront)
.off(this._icon, 'mouseout', this._resetZIndex);
}
this._map._panes.markerPane.removeChild(this._icon);
this._icon = null;
},
_removeShadow: function () {
if (this._shadow) {
this._map._panes.shadowPane.removeChild(this._shadow);
}
this._shadow = null;
},
_setPos: function (pos) {
L.DomUtil.setPosition(this._icon, pos);
if (this._shadow) {
L.DomUtil.setPosition(this._shadow, pos);
}
this._zIndex = pos.y + this.options.zIndexOffset;
this._resetZIndex();
},
_updateZIndex: function (offset) {
this._icon.style.zIndex = this._zIndex + offset;
},
_animateZoom: function (opt) {
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center).round();
this._setPos(pos);
},
_initInteraction: function () {
if (!this.options.clickable) { return; }
// TODO refactor into something shared with Map/Path/etc. to DRY it up
var icon = this._icon,
events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu'];
L.DomUtil.addClass(icon, 'leaflet-clickable');
L.DomEvent.on(icon, 'click', this._onMouseClick, this);
L.DomEvent.on(icon, 'keypress', this._onKeyPress, this);
for (var i = 0; i < events.length; i++) {
L.DomEvent.on(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) {
var wasDragged = this.dragging && this.dragging.moved();
if (this.hasEventListeners(e.type) || wasDragged) {
L.DomEvent.stopPropagation(e);
}
if (wasDragged) { return; }
if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; }
this.fire(e.type, {
originalEvent: e,
latlng: this._latlng
});
},
_onKeyPress: function (e) {
if (e.keyCode === 13) {
this.fire('click', {
originalEvent: e,
latlng: this._latlng
});
}
},
_fireMouseEvent: function (e) {
this.fire(e.type, {
originalEvent: e,
latlng: this._latlng
});
// TODO proper custom event propagation
// this line will always be called if marker is in a FeatureGroup
if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) {
L.DomEvent.preventDefault(e);
}
if (e.type !== 'mousedown') {
L.DomEvent.stopPropagation(e);
} else {
L.DomEvent.preventDefault(e);
}
},
setOpacity: function (opacity) {
this.options.opacity = opacity;
if (this._map) {
this._updateOpacity();
}
return this;
},
_updateOpacity: function () {
L.DomUtil.setOpacity(this._icon, this.options.opacity);
if (this._shadow) {
L.DomUtil.setOpacity(this._shadow, this.options.opacity);
}
},
_bringToFront: function () {
this._updateZIndex(this.options.riseOffset);
},
_resetZIndex: function () {
this._updateZIndex(0);
}
});
L.marker = function (latlng, options) {
return new L.Marker(latlng, options);
};
/*
* L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon)
* to use with L.Marker.
*/
L.DivIcon = L.Icon.extend({
options: {
iconSize: [12, 12], // also can be set through CSS
/*
iconAnchor: (Point)
popupAnchor: (Point)
html: (String)
bgPos: (Point)
*/
className: 'leaflet-div-icon',
html: false
},
createIcon: function (oldIcon) {
var div = (oldIcon && oldIcon.tagName === 'DIV') ? oldIcon : document.createElement('div'),
options = this.options;
if (options.html !== false) {
div.innerHTML = options.html;
} else {
div.innerHTML = '';
}
if (options.bgPos) {
div.style.backgroundPosition =
(-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
}
this._setIconStyles(div, 'icon');
return div;
},
createShadow: function () {
return null;
}
});
L.divIcon = function (options) {
return new L.DivIcon(options);
};
/*
* L.Popup is used for displaying popups on the map.
*/
L.Map.mergeOptions({
closePopupOnClick: true
});
L.Popup = L.Class.extend({
includes: L.Mixin.Events,
options: {
minWidth: 50,
maxWidth: 300,
// maxHeight: null,
autoPan: true,
closeButton: true,
offset: [0, 7],
autoPanPadding: [5, 5],
// autoPanPaddingTopLeft: null,
// autoPanPaddingBottomRight: null,
keepInView: false,
className: '',
zoomAnimation: true
},
initialize: function (options, source) {
L.setOptions(this, options);
this._source = source;
this._animated = L.Browser.any3d && this.options.zoomAnimation;
this._isOpen = false;
},
onAdd: function (map) {
this._map = map;
if (!this._container) {
this._initLayout();
}
var animFade = map.options.fadeAnimation;
if (animFade) {
L.DomUtil.setOpacity(this._container, 0);
}
map._panes.popupPane.appendChild(this._container);
map.on(this._getEvents(), this);
this.update();
if (animFade) {
L.DomUtil.setOpacity(this._container, 1);
}
this.fire('open');
map.fire('popupopen', {popup: this});
if (this._source) {
this._source.fire('popupopen', {popup: this});
}
},
addTo: function (map) {
map.addLayer(this);
return this;
},
openOn: function (map) {
map.openPopup(this);
return this;
},
onRemove: function (map) {
map._panes.popupPane.removeChild(this._container);
L.Util.falseFn(this._container.offsetWidth); // force reflow
map.off(this._getEvents(), this);
if (map.options.fadeAnimation) {
L.DomUtil.setOpacity(this._container, 0);
}
this._map = null;
this.fire('close');
map.fire('popupclose', {popup: this});
if (this._source) {
this._source.fire('popupclose', {popup: this});
}
},
getLatLng: function () {
return this._latlng;
},
setLatLng: function (latlng) {
this._latlng = L.latLng(latlng);
if (this._map) {
this._updatePosition();
this._adjustPan();
}
return this;
},
getContent: function () {
return this._content;
},
setContent: function (content) {
this._content = content;
this.update();
return this;
},
update: function () {
if (!this._map) { return; }
this._container.style.visibility = 'hidden';
this._updateContent();
this._updateLayout();
this._updatePosition();
this._container.style.visibility = '';
this._adjustPan();
},
_getEvents: function () {
var events = {
viewreset: this._updatePosition
};
if (this._animated) {
events.zoomanim = this._zoomAnimation;
}
if ('closeOnClick' in this.options ? this.options.closeOnClick : this._map.options.closePopupOnClick) {
events.preclick = this._close;
}
if (this.options.keepInView) {
events.moveend = this._adjustPan;
}
return events;
},
_close: function () {
if (this._map) {
this._map.closePopup(this);
}
},
_initLayout: function () {
var prefix = 'leaflet-popup',
containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' +
(this._animated ? 'animated' : 'hide'),
container = this._container = L.DomUtil.create('div', containerClass),
closeButton;
if (this.options.closeButton) {
closeButton = this._closeButton =
L.DomUtil.create('a', prefix + '-close-button', container);
closeButton.href = '#close';
closeButton.innerHTML = '&#215;';
L.DomEvent.disableClickPropagation(closeButton);
L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
}
var wrapper = this._wrapper =
L.DomUtil.create('div', prefix + '-content-wrapper', container);
L.DomEvent.disableClickPropagation(wrapper);
this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
L.DomEvent.disableScrollPropagation(this._contentNode);
L.DomEvent.on(wrapper, 'contextmenu', L.DomEvent.stopPropagation);
this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
},
_updateContent: function () {
if (!this._content) { return; }
if (typeof this._content === 'string') {
this._contentNode.innerHTML = this._content;
} else {
while (this._contentNode.hasChildNodes()) {
this._contentNode.removeChild(this._contentNode.firstChild);
}
this._contentNode.appendChild(this._content);
}
this.fire('contentupdate');
},
_updateLayout: function () {
var container = this._contentNode,
style = container.style;
style.width = '';
style.whiteSpace = 'nowrap';
var width = container.offsetWidth;
width = Math.min(width, this.options.maxWidth);
width = Math.max(width, this.options.minWidth);
style.width = (width + 1) + 'px';
style.whiteSpace = '';
style.height = '';
var height = container.offsetHeight,
maxHeight = this.options.maxHeight,
scrolledClass = 'leaflet-popup-scrolled';
if (maxHeight && height > maxHeight) {
style.height = maxHeight + 'px';
L.DomUtil.addClass(container, scrolledClass);
} else {
L.DomUtil.removeClass(container, scrolledClass);
}
this._containerWidth = this._container.offsetWidth;
},
_updatePosition: function () {
if (!this._map) { return; }
var pos = this._map.latLngToLayerPoint(this._latlng),
animated = this._animated,
offset = L.point(this.options.offset);
if (animated) {
L.DomUtil.setPosition(this._container, pos);
}
this._containerBottom = -offset.y - (animated ? 0 : pos.y);
this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x);
// bottom position the popup in case the height of the popup changes (images loading etc)
this._container.style.bottom = this._containerBottom + 'px';
this._container.style.left = this._containerLeft + 'px';
},
_zoomAnimation: function (opt) {
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
L.DomUtil.setPosition(this._container, pos);
},
_adjustPan: function () {
if (!this.options.autoPan) { return; }
var map = this._map,
containerHeight = this._container.offsetHeight,
containerWidth = this._containerWidth,
layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom);
if (this._animated) {
layerPos._add(L.DomUtil.getPosition(this._container));
}
var containerPos = map.layerPointToContainerPoint(layerPos),
padding = L.point(this.options.autoPanPadding),
paddingTL = L.point(this.options.autoPanPaddingTopLeft || padding),
paddingBR = L.point(this.options.autoPanPaddingBottomRight || padding),
size = map.getSize(),
dx = 0,
dy = 0;
if (containerPos.x + containerWidth + paddingBR.x > size.x) { // right
dx = containerPos.x + containerWidth - size.x + paddingBR.x;
}
if (containerPos.x - dx - paddingTL.x < 0) { // left
dx = containerPos.x - paddingTL.x;
}
if (containerPos.y + containerHeight + paddingBR.y > size.y) { // bottom
dy = containerPos.y + containerHeight - size.y + paddingBR.y;
}
if (containerPos.y - dy - paddingTL.y < 0) { // top
dy = containerPos.y - paddingTL.y;
}
if (dx || dy) {
map
.fire('autopanstart')
.panBy([dx, dy]);
}
},
_onCloseButtonClick: function (e) {
this._close();
L.DomEvent.stop(e);
}
});
L.popup = function (options, source) {
return new L.Popup(options, source);
};
L.Map.include({
openPopup: function (popup, latlng, options) { // (Popup) or (String || HTMLElement, LatLng[, Object])
this.closePopup();
if (!(popup instanceof L.Popup)) {
var content = popup;
popup = new L.Popup(options)
.setLatLng(latlng)
.setContent(content);
}
popup._isOpen = true;
this._popup = popup;
return this.addLayer(popup);
},
closePopup: function (popup) {
if (!popup || popup === this._popup) {
popup = this._popup;
this._popup = null;
}
if (popup) {
this.removeLayer(popup);
popup._isOpen = false;
}
return this;
}
});
/*
* Popup extension to L.Marker, adding popup-related methods.
*/
L.Marker.include({
openPopup: function () {
if (this._popup && this._map && !this._map.hasLayer(this._popup)) {
this._popup.setLatLng(this._latlng);
this._map.openPopup(this._popup);
}
return this;
},
closePopup: function () {
if (this._popup) {
this._popup._close();
}
return this;
},
togglePopup: function () {
if (this._popup) {
if (this._popup._isOpen) {
this.closePopup();
} else {
this.openPopup();
}
}
return this;
},
bindPopup: function (content, options) {
var anchor = L.point(this.options.icon.options.popupAnchor || [0, 0]);
anchor = anchor.add(L.Popup.prototype.options.offset);
if (options && options.offset) {
anchor = anchor.add(options.offset);
}
options = L.extend({offset: anchor}, options);
if (!this._popupHandlersAdded) {
this
.on('click', this.togglePopup, this)
.on('remove', this.closePopup, this)
.on('move', this._movePopup, this);
this._popupHandlersAdded = true;
}
if (content instanceof L.Popup) {
L.setOptions(content, options);
this._popup = content;
} else {
this._popup = new L.Popup(options, this)
.setContent(content);
}
return this;
},
setPopupContent: function (content) {
if (this._popup) {
this._popup.setContent(content);
}
return this;
},
unbindPopup: function () {
if (this._popup) {
this._popup = null;
this
.off('click', this.togglePopup, this)
.off('remove', this.closePopup, this)
.off('move', this._movePopup, this);
this._popupHandlersAdded = false;
}
return this;
},
getPopup: function () {
return this._popup;
},
_movePopup: function (e) {
this._popup.setLatLng(e.latlng);
}
});
/*
* L.LayerGroup is a class to combine several layers into one so that
* you can manipulate the group (e.g. add/remove it) as one layer.
*/
L.LayerGroup = L.Class.extend({
initialize: function (layers) {
this._layers = {};
var i, len;
if (layers) {
for (i = 0, len = layers.length; i < len; i++) {
this.addLayer(layers[i]);
}
}
},
addLayer: function (layer) {
var id = this.getLayerId(layer);
this._layers[id] = layer;
if (this._map) {
this._map.addLayer(layer);
}
return this;
},
removeLayer: function (layer) {
var id = layer in this._layers ? layer : this.getLayerId(layer);
if (this._map && this._layers[id]) {
this._map.removeLayer(this._layers[id]);
}
delete this._layers[id];
return this;
},
hasLayer: function (layer) {
if (!layer) { return false; }
return (layer in this._layers || this.getLayerId(layer) in this._layers);
},
clearLayers: function () {
this.eachLayer(this.removeLayer, this);
return this;
},
invoke: function (methodName) {
var args = Array.prototype.slice.call(arguments, 1),
i, layer;
for (i in this._layers) {
layer = this._layers[i];
if (layer[methodName]) {
layer[methodName].apply(layer, args);
}
}
return this;
},
onAdd: function (map) {
this._map = map;
this.eachLayer(map.addLayer, map);
},
onRemove: function (map) {
this.eachLayer(map.removeLayer, map);
this._map = null;
},
addTo: function (map) {
map.addLayer(this);
return this;
},
eachLayer: function (method, context) {
for (var i in this._layers) {
method.call(context, this._layers[i]);
}
return this;
},
getLayer: function (id) {
return this._layers[id];
},
getLayers: function () {
var layers = [];
for (var i in this._layers) {
layers.push(this._layers[i]);
}
return layers;
},
setZIndex: function (zIndex) {
return this.invoke('setZIndex', zIndex);
},
getLayerId: function (layer) {
return L.stamp(layer);
}
});
L.layerGroup = function (layers) {
return new L.LayerGroup(layers);
};
/*
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods
* shared between a group of interactive layers (like vectors or markers).
*/
L.FeatureGroup = L.LayerGroup.extend({
includes: L.Mixin.Events,
statics: {
EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu popupopen popupclose'
},
addLayer: function (layer) {
if (this.hasLayer(layer)) {
return this;
}
if ('on' in layer) {
layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this);
}
L.LayerGroup.prototype.addLayer.call(this, layer);
if (this._popupContent && layer.bindPopup) {
layer.bindPopup(this._popupContent, this._popupOptions);
}
return this.fire('layeradd', {layer: layer});
},
removeLayer: function (layer) {
if (!this.hasLayer(layer)) {
return this;
}
if (layer in this._layers) {
layer = this._layers[layer];
}
layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this);
L.LayerGroup.prototype.removeLayer.call(this, layer);
if (this._popupContent) {
this.invoke('unbindPopup');
}
return this.fire('layerremove', {layer: layer});
},
bindPopup: function (content, options) {
this._popupContent = content;
this._popupOptions = options;
return this.invoke('bindPopup', content, options);
},
openPopup: function (latlng) {
// open popup on the first layer
for (var id in this._layers) {
this._layers[id].openPopup(latlng);
break;
}
return this;
},
setStyle: function (style) {
return this.invoke('setStyle', style);
},
bringToFront: function () {
return this.invoke('bringToFront');
},
bringToBack: function () {
return this.invoke('bringToBack');
},
getBounds: function () {
var bounds = new L.LatLngBounds();
this.eachLayer(function (layer) {
bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
});
return bounds;
},
_propagateEvent: function (e) {
e = L.extend({
layer: e.target,
target: this
}, e);
this.fire(e.type, e);
}
});
L.featureGroup = function (layers) {
return new L.FeatureGroup(layers);
};
/*
* L.Path is a base class for rendering vector paths on a map. 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)
// set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is)
CLIP_PADDING: (function () {
var max = L.Browser.mobile ? 1280 : 2000,
target = (max / Math.max(window.outerWidth, window.outerHeight) - 1) / 2;
return Math.max(0, Math.min(0.5, target));
})()
},
options: {
stroke: true,
color: '#0033ff',
dashArray: null,
lineCap: null,
lineJoin: null,
weight: 5,
opacity: 0.5,
fill: false,
fillColor: null, //same as color by default
fillOpacity: 0.2,
clickable: true
},
initialize: function (options) {
L.setOptions(this, options);
},
onAdd: function (map) {
this._map = map;
if (!this._container) {
this._initElements();
this._initEvents();
}
this.projectLatlngs();
this._updatePath();
if (this._container) {
this._map._pathRoot.appendChild(this._container);
}
this.fire('add');
map.on({
'viewreset': this.projectLatlngs,
'moveend': this._updatePath
}, this);
},
addTo: function (map) {
map.addLayer(this);
return this;
},
onRemove: function (map) {
map._pathRoot.removeChild(this._container);
// Need to fire remove event before we set _map to null as the event hooks might need the object
this.fire('remove');
this._map = null;
if (L.Browser.vml) {
this._container = null;
this._stroke = null;
this._fill = null;
}
map.off({
'viewreset': this.projectLatlngs,
'moveend': this._updatePath
}, this);
},
projectLatlngs: function () {
// do all projection stuff here
},
setStyle: function (style) {
L.setOptions(this, style);
if (this._container) {
this._updateStyle();
}
return this;
},
redraw: function () {
if (this._map) {
this.projectLatlngs();
this._updatePath();
}
return this;
}
});
L.Map.include({
_updatePathViewport: function () {
var p = L.Path.CLIP_PADDING,
size = this.getSize(),
panePos = L.DomUtil.getPosition(this._mapPane),
min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()),
max = min.add(size.multiplyBy(1 + p * 2)._round());
this._pathViewport = new L.Bounds(min, max);
}
});
/*
* Extends L.Path with SVG-specific rendering code.
*/
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
},
bringToFront: function () {
var root = this._map._pathRoot,
path = this._container;
if (path && root.lastChild !== path) {
root.appendChild(path);
}
return this;
},
bringToBack: function () {
var root = this._map._pathRoot,
path = this._container,
first = root.firstChild;
if (path && first !== path) {
root.insertBefore(path, first);
}
return this;
},
getPathString: function () {
// form path string here
},
_createElement: function (name) {
return document.createElementNS(L.Path.SVG_NS, name);
},
_initElements: function () {
this._map._initPathRoot();
this._initPath();
this._initStyle();
},
_initPath: function () {
this._container = this._createElement('g');
this._path = this._createElement('path');
if (this.options.className) {
L.DomUtil.addClass(this._path, this.options.className);
}
this._container.appendChild(this._path);
},
_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');
}
if (this.options.pointerEvents) {
this._path.setAttribute('pointer-events', this.options.pointerEvents);
}
if (!this.options.clickable && !this.options.pointerEvents) {
this._path.setAttribute('pointer-events', '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.dashArray) {
this._path.setAttribute('stroke-dasharray', this.options.dashArray);
} else {
this._path.removeAttribute('stroke-dasharray');
}
if (this.options.lineCap) {
this._path.setAttribute('stroke-linecap', this.options.lineCap);
}
if (this.options.lineJoin) {
this._path.setAttribute('stroke-linejoin', this.options.lineJoin);
}
} else {
this._path.setAttribute('stroke', 'none');
}
if (this.options.fill) {
this._path.setAttribute('fill', this.options.fillColor || this.options.color);
this._path.setAttribute('fill-opacity', this.options.fillOpacity);
} else {
this._path.setAttribute('fill', 'none');
}
},
_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.svg || !L.Browser.vml) {
L.DomUtil.addClass(this._path, 'leaflet-clickable');
}
L.DomEvent.on(this._container, 'click', this._onMouseClick, this);
var events = ['dblclick', 'mousedown', 'mouseover',
'mouseout', 'mousemove', 'contextmenu'];
for (var i = 0; i < events.length; i++) {
L.DomEvent.on(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; }
var map = this._map,
containerPoint = map.mouseEventToContainerPoint(e),
layerPoint = map.containerPointToLayerPoint(containerPoint),
latlng = map.layerPointToLatLng(layerPoint);
this.fire(e.type, {
latlng: latlng,
layerPoint: layerPoint,
containerPoint: containerPoint,
originalEvent: e
});
if (e.type === 'contextmenu') {
L.DomEvent.preventDefault(e);
}
if (e.type !== 'mousemove') {
L.DomEvent.stopPropagation(e);
}
}
});
L.Map.include({
_initPathRoot: function () {
if (!this._pathRoot) {
this._pathRoot = L.Path.prototype._createElement('svg');
this._panes.overlayPane.appendChild(this._pathRoot);
if (this.options.zoomAnimation && L.Browser.any3d) {
L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-animated');
this.on({
'zoomanim': this._animatePathZoom,
'zoomend': this._endPathZoom
});
} else {
L.DomUtil.addClass(this._pathRoot, 'leaflet-zoom-hide');
}
this.on('moveend', this._updateSvgViewport);
this._updateSvgViewport();
}
},
_animatePathZoom: function (e) {
var scale = this.getZoomScale(e.zoom),
offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min);
this._pathRoot.style[L.DomUtil.TRANSFORM] =
L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') ';
this._pathZooming = true;
},
_endPathZoom: function () {
this._pathZooming = false;
},
_updateSvgViewport: function () {
if (this._pathZooming) {
// Do not update SVGs while a zoom animation is going on otherwise the animation will break.
// When the zoom animation ends we will be updated again anyway
// This fixes the case where you do a momentum move and zoom while the move is still ongoing.
return;
}
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
if (L.Browser.mobileWebkit) {
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.mobileWebkit) {
pane.appendChild(root);
}
}
});
/*
* Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods.
*/
L.Path.include({
bindPopup: function (content, options) {
if (content instanceof L.Popup) {
this._popup = content;
} else {
if (!this._popup || options) {
this._popup = new L.Popup(options, this);
}
this._popup.setContent(content);
}
if (!this._popupHandlersAdded) {
this
.on('click', this._openPopup, this)
.on('remove', this.closePopup, this);
this._popupHandlersAdded = true;
}
return this;
},
unbindPopup: function () {
if (this._popup) {
this._popup = null;
this
.off('click', this._openPopup)
.off('remove', this.closePopup);
this._popupHandlersAdded = false;
}
return this;
},
openPopup: function (latlng) {
if (this._popup) {
// open the popup from one of the path's points if not specified
latlng = latlng || this._latlng ||
this._latlngs[Math.floor(this._latlngs.length / 2)];
this._openPopup({latlng: latlng});
}
return this;
},
closePopup: function () {
if (this._popup) {
this._popup._close();
}
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 = !L.Browser.svg && (function () {
try {
var div = document.createElement('div');
div.innerHTML = '<v:shape adj="1"/>';
var shape = div.firstChild;
shape.style.behavior = 'url(#default#VML)';
return shape && (typeof shape.adj === 'object');
} catch (e) {
return false;
}
}());
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 () {
var container = this._container = this._createElement('shape');
L.DomUtil.addClass(container, 'leaflet-vml-shape' +
(this.options.className ? ' ' + this.options.className : ''));
if (this.options.clickable) {
L.DomUtil.addClass(container, 'leaflet-clickable');
}
container.coordsize = '1 1';
this._path = this._createElement('path');
container.appendChild(this._path);
this._map._pathRoot.appendChild(container);
},
_initStyle: function () {
this._updateStyle();
},
_updateStyle: function () {
var stroke = this._stroke,
fill = this._fill,
options = this.options,
container = this._container;
container.stroked = options.stroke;
container.filled = options.fill;
if (options.stroke) {
if (!stroke) {
stroke = this._stroke = this._createElement('stroke');
stroke.endcap = 'round';
container.appendChild(stroke);
}
stroke.weight = options.weight + 'px';
stroke.color = options.color;
stroke.opacity = options.opacity;
if (options.dashArray) {
stroke.dashStyle = L.Util.isArray(options.dashArray) ?
options.dashArray.join(' ') :
options.dashArray.replace(/( *, *)/g, ' ');
} else {
stroke.dashStyle = '';
}
if (options.lineCap) {
stroke.endcap = options.lineCap.replace('butt', 'flat');
}
if (options.lineJoin) {
stroke.joinstyle = options.lineJoin;
}
} else if (stroke) {
container.removeChild(stroke);
this._stroke = null;
}
if (options.fill) {
if (!fill) {
fill = this._fill = this._createElement('fill');
container.appendChild(fill);
}
fill.color = options.fillColor || options.color;
fill.opacity = options.fillOpacity;
} else if (fill) {
container.removeChild(fill);
this._fill = null;
}
},
_updatePath: function () {
var style = this._container.style;
style.display = 'none';
this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
style.display = '';
}
});
L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
_initPathRoot: function () {
if (this._pathRoot) { return; }
var root = this._pathRoot = document.createElement('div');
root.className = 'leaflet-vml-container';
this._panes.overlayPane.appendChild(root);
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
},
redraw: function () {
if (this._map) {
this.projectLatlngs();
this._requestUpdate();
}
return this;
},
setStyle: function (style) {
L.setOptions(this, style);
if (this._map) {
this._updateStyle();
this._requestUpdate();
}
return this;
},
onRemove: function (map) {
map
.off('viewreset', this.projectLatlngs, this)
.off('moveend', this._updatePath, this);
if (this.options.clickable) {
this._map.off('click', this._onClick, this);
this._map.off('mousemove', this._onMouseMove, this);
}
this._requestUpdate();
this.fire('remove');
this._map = null;
},
_requestUpdate: function () {
if (this._map && !L.Path._updateRequest) {
L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
}
},
_fireMapMoveEnd: function () {
L.Path._updateRequest = null;
this.fire('moveend');
},
_initElements: function () {
this._map._initPathRoot();
this._ctx = this._map._canvasCtx;
},
_updateStyle: function () {
var options = this.options;
if (options.stroke) {
this._ctx.lineWidth = options.weight;
this._ctx.strokeStyle = options.color;
}
if (options.fill) {
this._ctx.fillStyle = options.fillColor || 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; }
var ctx = this._ctx,
options = this.options;
this._drawPath();
ctx.save();
this._updateStyle();
if (options.fill) {
ctx.globalAlpha = options.fillOpacity;
ctx.fill();
}
if (options.stroke) {
ctx.globalAlpha = options.opacity;
ctx.stroke();
}
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 dblclick
this._map.on('mousemove', this._onMouseMove, this);
this._map.on('click', this._onClick, this);
}
},
_onClick: function (e) {
if (this._containsPoint(e.layerPoint)) {
this.fire('click', e);
}
},
_onMouseMove: function (e) {
if (!this._map || this._map._animatingZoom) { return; }
// TODO don't do on each move
if (this._containsPoint(e.layerPoint)) {
this._ctx.canvas.style.cursor = 'pointer';
this._mouseInside = true;
this.fire('mouseover', e);
} else if (this._mouseInside) {
this._ctx.canvas.style.cursor = '';
this._mouseInside = false;
this.fire('mouseout', e);
}
}
});
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);
if (this.options.zoomAnimation) {
this._pathRoot.className = 'leaflet-zoom-animated';
this.on('zoomanim', this._animatePathZoom);
this.on('zoomend', this._endPathZoom);
}
this.on('moveend', this._updateCanvasViewport);
this._updateCanvasViewport();
}
},
_updateCanvasViewport: function () {
// don't redraw while zooming. See _updateSvgViewport for more details
if (this._pathZooming) { return; }
this._updatePathViewport();
var vp = this._pathViewport,
min = vp.min,
size = vp.max.subtract(min),
root = this._pathRoot;
//TODO check if this 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.)
*/
/*jshint bitwise:false */ // allow bitwise operations for this file
L.LineUtil = {
// Simplify polyline with vertex reduction and Douglas-Peucker simplification.
// Improves rendering performance dramatically by lessening the number of points to draw.
simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
if (!tolerance || !points.length) {
return points.slice();
}
var sqTolerance = tolerance * tolerance;
// stage 1: vertex reduction
points = this._reducePoints(points, sqTolerance);
// stage 2: Douglas-Peucker simplification
points = this._simplifyDP(points, sqTolerance);
return points;
},
// distance from a point to a segment between two points
pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
},
closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return this._sqClosestPointOnSegment(p, p1, p2);
},
// Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
_simplifyDP: function (points, sqTolerance) {
var len = points.length,
ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
markers = new ArrayConstructor(len);
markers[0] = markers[len - 1] = 1;
this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
var i,
newPoints = [];
for (i = 0; i < len; i++) {
if (markers[i]) {
newPoints.push(points[i]);
}
}
return newPoints;
},
_simplifyDPStep: function (points, markers, sqTolerance, first, last) {
var maxSqDist = 0,
index, i, sqDist;
for (i = first + 1; i <= last - 1; i++) {
sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
if (sqDist > maxSqDist) {
index = i;
maxSqDist = sqDist;
}
}
if (maxSqDist > sqTolerance) {
markers[index] = 1;
this._simplifyDPStep(points, markers, sqTolerance, first, index);
this._simplifyDPStep(points, markers, sqTolerance, index, last);
}
},
// reduce points that are too close to each other to a single point
_reducePoints: function (points, sqTolerance) {
var reducedPoints = [points[0]];
for (var i = 1, prev = 0, len = points.length; i < len; i++) {
if (this._sqDist(points[i], points[prev]) > sqTolerance) {
reducedPoints.push(points[i]);
prev = i;
}
}
if (prev < len - 1) {
reducedPoints.push(points[len - 1]);
}
return reducedPoints;
},
// Cohen-Sutherland line clipping algorithm.
// Used to avoid rendering parts of a polyline that are not currently visible.
clipSegment: function (a, b, bounds, useLastCode) {
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
codeB = this._getBitCode(b, bounds),
codeOut, p, newCode;
// save 2nd code to avoid calculating it on the next segment
this._lastCode = codeB;
while (true) {
// if a,b is inside the clip window (trivial accept)
if (!(codeA | codeB)) {
return [a, b];
// if a,b is outside the clip window (trivial reject)
} else if (codeA & codeB) {
return false;
// other cases
} else {
codeOut = codeA || codeB;
p = this._getEdgeIntersection(a, b, codeOut, bounds);
newCode = this._getBitCode(p, bounds);
if (codeOut === codeA) {
a = p;
codeA = newCode;
} else {
b = p;
codeB = newCode;
}
}
}
},
_getEdgeIntersection: function (a, b, code, bounds) {
var dx = b.x - a.x,
dy = b.y - a.y,
min = bounds.min,
max = bounds.max;
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;
},
// 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 is used to display polylines on a map.
*/
L.Polyline = L.Path.extend({
initialize: function (latlngs, options) {
L.Path.prototype.initialize.call(this, options);
this._latlngs = this._convertLatLngs(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
},
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 = this._convertLatLngs(latlngs);
return this.redraw();
},
addLatLng: function (latlng) {
this._latlngs.push(L.latLng(latlng));
return this.redraw();
},
spliceLatLngs: function () { // (Number index, Number howMany)
var removed = [].splice.apply(this._latlngs, arguments);
this._convertLatLngs(this._latlngs, true);
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 sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true);
if (sqDist < minDistance) {
minDistance = sqDist;
minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
}
}
}
if (minPoint) {
minPoint.distance = Math.sqrt(minDistance);
}
return minPoint;
},
getBounds: function () {
return new L.LatLngBounds(this.getLatLngs());
},
_convertLatLngs: function (latlngs, overwrite) {
var i, len, target = overwrite ? latlngs : [];
for (i = 0, len = latlngs.length; i < len; i++) {
if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') {
return;
}
target[i] = L.latLng(latlngs[i]);
}
return target;
},
_initEvents: function () {
L.Path.prototype._initEvents.call(this);
},
_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 () {
if (!this._map) { return; }
this._clipPoints();
this._simplifyPoints();
L.Path.prototype._updatePath.call(this);
}
});
L.polyline = function (latlngs, options) {
return new L.Polyline(latlngs, options);
};
/*
* L.PolyUtil contains utility functions for polygons (clipping, etc.).
*/
/*jshint bitwise:false */ // allow bitwise operations here
L.PolyUtil = {};
/*
* Sutherland-Hodgeman polygon clipping algorithm.
* Used to avoid rendering parts of a polygon that are not currently visible.
*/
L.PolyUtil.clipPolygon = function (points, bounds) {
var clippedPoints,
edges = [1, 4, 2, 8],
i, j, k,
a, b,
len, edge, p,
lu = L.LineUtil;
for (i = 0, len = points.length; i < len; i++) {
points[i]._code = lu._getBitCode(points[i], bounds);
}
// for each edge (left, bottom, right, top)
for (k = 0; k < 4; k++) {
edge = edges[k];
clippedPoints = [];
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
a = points[i];
b = points[j];
// if a is inside the clip window
if (!(a._code & edge)) {
// if b is outside the clip window (a->b goes out of screen)
if (b._code & edge) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
clippedPoints.push(a);
// else if b is inside the clip window (a->b enters the screen)
} else if (!(b._code & edge)) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
}
points = clippedPoints;
}
return points;
};
/*
* L.Polygon 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);
this._initWithHoles(latlngs);
},
_initWithHoles: function (latlngs) {
var i, len, hole;
if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
this._latlngs = this._convertLatLngs(latlngs[0]);
this._holes = latlngs.slice(1);
for (i = 0, len = this._holes.length; i < len; i++) {
hole = this._holes[i] = this._convertLatLngs(this._holes[i]);
if (hole[0].equals(hole[hole.length - 1])) {
hole.pop();
}
}
}
// filter out last point if its equal to the first one
latlngs = this._latlngs;
if (latlngs.length >= 2 && latlngs[0].equals(latlngs[latlngs.length - 1])) {
latlngs.pop();
}
},
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; }
var i, j, len, len2;
for (i = 0, len = this._holes.length; i < len; i++) {
this._holePoints[i] = [];
for (j = 0, len2 = this._holes[i].length; j < len2; j++) {
this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
}
}
},
setLatLngs: function (latlngs) {
if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) {
this._initWithHoles(latlngs);
return this.redraw();
} else {
return L.Polyline.prototype.setLatLngs.call(this, latlngs);
}
},
_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) {
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');
}
});
L.polygon = function (latlngs, options) {
return new L.Polygon(latlngs, options);
};
/*
* 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.eachLayer(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));
}
return this;
},
getLatLngs: function () {
var latlngs = [];
this.eachLayer(function (layer) {
latlngs.push(layer.getLatLngs());
});
return latlngs;
}
});
}
L.MultiPolyline = createMulti(L.Polyline);
L.MultiPolygon = createMulti(L.Polygon);
L.multiPolyline = function (latlngs, options) {
return new L.MultiPolyline(latlngs, options);
};
L.multiPolygon = function (latlngs, options) {
return new L.MultiPolygon(latlngs, options);
};
}());
/*
* L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object.
*/
L.Rectangle = L.Polygon.extend({
initialize: function (latLngBounds, options) {
L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options);
},
setBounds: function (latLngBounds) {
this.setLatLngs(this._boundsToLatLngs(latLngBounds));
},
_boundsToLatLngs: function (latLngBounds) {
latLngBounds = L.latLngBounds(latLngBounds);
return [
latLngBounds.getSouthWest(),
latLngBounds.getNorthWest(),
latLngBounds.getNorthEast(),
latLngBounds.getSouthEast()
];
}
});
L.rectangle = function (latLngBounds, options) {
return new L.Rectangle(latLngBounds, options);
};
/*
* L.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 = L.latLng(latlng);
this._mRadius = radius;
},
options: {
fill: true
},
setLatLng: function (latlng) {
this._latlng = L.latLng(latlng);
return this.redraw();
},
setRadius: function (radius) {
this._mRadius = radius;
return this.redraw();
},
projectLatlngs: function () {
var lngRadius = this._getLngRadius(),
latlng = this._latlng,
pointLeft = this._map.latLngToLayerPoint([latlng.lat, latlng.lng - lngRadius]);
this._point = this._map.latLngToLayerPoint(latlng);
this._radius = Math.max(this._point.x - pointLeft.x, 1);
},
getBounds: function () {
var lngRadius = this._getLngRadius(),
latRadius = (this._mRadius / 40075017) * 360,
latlng = this._latlng;
return new L.LatLngBounds(
[latlng.lat - latRadius, latlng.lng - lngRadius],
[latlng.lat + latRadius, latlng.lng + lngRadius]);
},
getLatLng: function () {
return this._latlng;
},
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);
}
},
getRadius: function () {
return this._mRadius;
},
// TODO Earth hardcoded, move into projection code!
_getLatRadius: function () {
return (this._mRadius / 40075017) * 360;
},
_getLngRadius: function () {
return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
},
_checkIfEmpty: function () {
if (!this._map) {
return false;
}
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.circle = function (latlng, radius, options) {
return new L.Circle(latlng, radius, options);
};
/*
* 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);
},
_updateStyle : function () {
L.Circle.prototype._updateStyle.call(this);
this.setRadius(this.options.radius);
},
setLatLng: function (latlng) {
L.Circle.prototype.setLatLng.call(this, latlng);
if (this._popup && this._popup._isOpen) {
this._popup.setLatLng(latlng);
}
return this;
},
setRadius: function (radius) {
this.options.radius = this._radius = radius;
return this.redraw();
},
getRadius: function () {
return this._radius;
}
});
L.circleMarker = function (latlng, options) {
return new L.CircleMarker(latlng, options);
};
/*
* Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines.
*/
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;
}
});
/*
* Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons.
*/
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;
}
});
/*
* Extends L.Circle with Canvas-specific code.
*/
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, false);
},
_containsPoint: function (p) {
var center = this._point,
w2 = this.options.stroke ? this.options.weight / 2 : 0;
return (p.distanceTo(center) <= this._radius + w2);
}
});
/*
* CircleMarker canvas specific drawing parts.
*/
L.CircleMarker.include(!L.Path.CANVAS ? {} : {
_updateStyle: function () {
L.Path.prototype._updateStyle.call(this);
}
});
/*
* L.GeoJSON turns any GeoJSON data into a Leaflet layer.
*/
L.GeoJSON = L.FeatureGroup.extend({
initialize: function (geojson, options) {
L.setOptions(this, options);
this._layers = {};
if (geojson) {
this.addData(geojson);
}
},
addData: function (geojson) {
var features = L.Util.isArray(geojson) ? geojson : geojson.features,
i, len, feature;
if (features) {
for (i = 0, len = features.length; i < len; i++) {
// Only add this if geometry or geometries are set and not null
feature = features[i];
if (feature.geometries || feature.geometry || feature.features || feature.coordinates) {
this.addData(features[i]);
}
}
return this;
}
var options = this.options;
if (options.filter && !options.filter(geojson)) { return; }
var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer, options.coordsToLatLng, options);
layer.feature = L.GeoJSON.asFeature(geojson);
layer.defaultOptions = layer.options;
this.resetStyle(layer);
if (options.onEachFeature) {
options.onEachFeature(geojson, layer);
}
return this.addLayer(layer);
},
resetStyle: function (layer) {
var style = this.options.style;
if (style) {
// reset any custom styles
L.Util.extend(layer.options, layer.defaultOptions);
this._setLayerStyle(layer, style);
}
},
setStyle: function (style) {
this.eachLayer(function (layer) {
this._setLayerStyle(layer, style);
}, this);
},
_setLayerStyle: function (layer, style) {
if (typeof style === 'function') {
style = style(layer.feature);
}
if (layer.setStyle) {
layer.setStyle(style);
}
}
});
L.extend(L.GeoJSON, {
geometryToLayer: function (geojson, pointToLayer, coordsToLatLng, vectorOptions) {
var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
coords = geometry.coordinates,
layers = [],
latlng, latlngs, i, len;
coordsToLatLng = coordsToLatLng || this.coordsToLatLng;
switch (geometry.type) {
case 'Point':
latlng = coordsToLatLng(coords);
return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
case 'MultiPoint':
for (i = 0, len = coords.length; i < len; i++) {
latlng = coordsToLatLng(coords[i]);
layers.push(pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng));
}
return new L.FeatureGroup(layers);
case 'LineString':
latlngs = this.coordsToLatLngs(coords, 0, coordsToLatLng);
return new L.Polyline(latlngs, vectorOptions);
case 'Polygon':
if (coords.length === 2 && !coords[1].length) {
throw new Error('Invalid GeoJSON object.');
}
latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
return new L.Polygon(latlngs, vectorOptions);
case 'MultiLineString':
latlngs = this.coordsToLatLngs(coords, 1, coordsToLatLng);
return new L.MultiPolyline(latlngs, vectorOptions);
case 'MultiPolygon':
latlngs = this.coordsToLatLngs(coords, 2, coordsToLatLng);
return new L.MultiPolygon(latlngs, vectorOptions);
case 'GeometryCollection':
for (i = 0, len = geometry.geometries.length; i < len; i++) {
layers.push(this.geometryToLayer({
geometry: geometry.geometries[i],
type: 'Feature',
properties: geojson.properties
}, pointToLayer, coordsToLatLng, vectorOptions));
}
return new L.FeatureGroup(layers);
default:
throw new Error('Invalid GeoJSON object.');
}
},
coordsToLatLng: function (coords) { // (Array[, Boolean]) -> LatLng
return new L.LatLng(coords[1], coords[0], coords[2]);
},
coordsToLatLngs: function (coords, levelsDeep, coordsToLatLng) { // (Array[, Number, Function]) -> Array
var latlng, i, len,
latlngs = [];
for (i = 0, len = coords.length; i < len; i++) {
latlng = levelsDeep ?
this.coordsToLatLngs(coords[i], levelsDeep - 1, coordsToLatLng) :
(coordsToLatLng || this.coordsToLatLng)(coords[i]);
latlngs.push(latlng);
}
return latlngs;
},
latLngToCoords: function (latlng) {
var coords = [latlng.lng, latlng.lat];
if (latlng.alt !== undefined) {
coords.push(latlng.alt);
}
return coords;
},
latLngsToCoords: function (latLngs) {
var coords = [];
for (var i = 0, len = latLngs.length; i < len; i++) {
coords.push(L.GeoJSON.latLngToCoords(latLngs[i]));
}
return coords;
},
getFeature: function (layer, newGeometry) {
return layer.feature ? L.extend({}, layer.feature, {geometry: newGeometry}) : L.GeoJSON.asFeature(newGeometry);
},
asFeature: function (geoJSON) {
if (geoJSON.type === 'Feature') {
return geoJSON;
}
return {
type: 'Feature',
properties: {},
geometry: geoJSON
};
}
});
var PointToGeoJSON = {
toGeoJSON: function () {
return L.GeoJSON.getFeature(this, {
type: 'Point',
coordinates: L.GeoJSON.latLngToCoords(this.getLatLng())
});
}
};
L.Marker.include(PointToGeoJSON);
L.Circle.include(PointToGeoJSON);
L.CircleMarker.include(PointToGeoJSON);
L.Polyline.include({
toGeoJSON: function () {
return L.GeoJSON.getFeature(this, {
type: 'LineString',
coordinates: L.GeoJSON.latLngsToCoords(this.getLatLngs())
});
}
});
L.Polygon.include({
toGeoJSON: function () {
var coords = [L.GeoJSON.latLngsToCoords(this.getLatLngs())],
i, len, hole;
coords[0].push(coords[0][0]);
if (this._holes) {
for (i = 0, len = this._holes.length; i < len; i++) {
hole = L.GeoJSON.latLngsToCoords(this._holes[i]);
hole.push(hole[0]);
coords.push(hole);
}
}
return L.GeoJSON.getFeature(this, {
type: 'Polygon',
coordinates: coords
});
}
});
(function () {
function multiToGeoJSON(type) {
return function () {
var coords = [];
this.eachLayer(function (layer) {
coords.push(layer.toGeoJSON().geometry.coordinates);
});
return L.GeoJSON.getFeature(this, {
type: type,
coordinates: coords
});
};
}
L.MultiPolyline.include({toGeoJSON: multiToGeoJSON('MultiLineString')});
L.MultiPolygon.include({toGeoJSON: multiToGeoJSON('MultiPolygon')});
L.LayerGroup.include({
toGeoJSON: function () {
var geometry = this.feature && this.feature.geometry,
jsons = [],
json;
if (geometry && geometry.type === 'MultiPoint') {
return multiToGeoJSON('MultiPoint').call(this);
}
var isGeometryCollection = geometry && geometry.type === 'GeometryCollection';
this.eachLayer(function (layer) {
if (layer.toGeoJSON) {
json = layer.toGeoJSON();
jsons.push(isGeometryCollection ? json.geometry : L.GeoJSON.asFeature(json));
}
});
if (isGeometryCollection) {
return L.GeoJSON.getFeature(this, {
geometries: jsons,
type: 'GeometryCollection'
});
}
return {
type: 'FeatureCollection',
features: jsons
};
}
});
}());
L.geoJson = function (geojson, options) {
return new L.GeoJSON(geojson, options);
};
/*
* L.DomEvent contains functions for working with DOM events.
*/
L.DomEvent = {
/* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
var id = L.stamp(fn),
key = '_leaflet_' + type + id,
handler, originalHandler, newType;
if (obj[key]) { return this; }
handler = function (e) {
return fn.call(context || obj, e || L.DomEvent._getEvent());
};
if (L.Browser.pointer && type.indexOf('touch') === 0) {
return this.addPointerListener(obj, type, handler, id);
}
if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
this.addDoubleTapListener(obj, handler, id);
}
if ('addEventListener' in obj) {
if (type === 'mousewheel') {
obj.addEventListener('DOMMouseScroll', handler, false);
obj.addEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
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 if (type === 'click' && L.Browser.android) {
originalHandler = handler;
handler = function (e) {
return L.DomEvent._filterClick(e, originalHandler);
};
obj.addEventListener(type, handler, false);
} else {
obj.addEventListener(type, handler, false);
}
} else if ('attachEvent' in obj) {
obj.attachEvent('on' + type, handler);
}
obj[key] = handler;
return this;
},
removeListener: function (obj, type, fn) { // (HTMLElement, String, Function)
var id = L.stamp(fn),
key = '_leaflet_' + type + id,
handler = obj[key];
if (!handler) { return this; }
if (L.Browser.pointer && type.indexOf('touch') === 0) {
this.removePointerListener(obj, type, id);
} else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
this.removeDoubleTapListener(obj, id);
} else if ('removeEventListener' in obj) {
if (type === 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', handler, false);
obj.removeEventListener(type, handler, false);
} else 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;
return this;
},
stopPropagation: function (e) {
if (e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
L.DomEvent._skipped(e);
return this;
},
disableScrollPropagation: function (el) {
var stop = L.DomEvent.stopPropagation;
return L.DomEvent
.on(el, 'mousewheel', stop)
.on(el, 'MozMousePixelScroll', stop);
},
disableClickPropagation: function (el) {
var stop = L.DomEvent.stopPropagation;
for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
L.DomEvent.on(el, L.Draggable.START[i], stop);
}
return L.DomEvent
.on(el, 'click', L.DomEvent._fakeStop)
.on(el, 'dblclick', stop);
},
preventDefault: function (e) {
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
return this;
},
stop: function (e) {
return L.DomEvent
.preventDefault(e)
.stopPropagation(e);
},
getMousePosition: function (e, container) {
if (!container) {
return new L.Point(e.clientX, e.clientY);
}
var rect = container.getBoundingClientRect();
return new L.Point(
e.clientX - rect.left - container.clientLeft,
e.clientY - rect.top - container.clientTop);
},
getWheelDelta: function (e) {
var delta = 0;
if (e.wheelDelta) {
delta = e.wheelDelta / 120;
}
if (e.detail) {
delta = -e.detail / 3;
}
return delta;
},
_skipEvents: {},
_fakeStop: function (e) {
// fakes stopPropagation by setting a special event flag, checked/reset with L.DomEvent._skipped(e)
L.DomEvent._skipEvents[e.type] = true;
},
_skipped: function (e) {
var skipped = this._skipEvents[e.type];
// reset when checking, as it's only used in map container and propagates outside of the map
this._skipEvents[e.type] = false;
return skipped;
},
// check if element really left/entered the event target (for mouseenter/mouseleave)
_checkMouse: function (el, e) {
var related = e.relatedTarget;
if (!related) { return true; }
try {
while (related && (related !== el)) {
related = related.parentNode;
}
} catch (err) {
return false;
}
return (related !== el);
},
_getEvent: function () { // evil magic for IE
/*jshint noarg:false */
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;
},
// this is a horrible workaround for a bug in Android where a single touch triggers two click events
_filterClick: function (e, handler) {
var timeStamp = (e.timeStamp || e.originalEvent.timeStamp),
elapsed = L.DomEvent._lastClick && (timeStamp - L.DomEvent._lastClick);
// are they closer together than 500ms yet more than 100ms?
// Android typically triggers them ~300ms apart while multiple listeners
// on the same event should be triggered far faster;
// or check if click is simulated on the element, and if it is, reject any non-simulated events
if ((elapsed && elapsed > 100 && elapsed < 500) || (e.target._simulatedClick && !e._simulated)) {
L.DomEvent.stop(e);
return;
}
L.DomEvent._lastClick = timeStamp;
return handler(e);
}
};
L.DomEvent.on = L.DomEvent.addListener;
L.DomEvent.off = L.DomEvent.removeListener;
/*
* 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'] : ['mousedown'],
END: {
mousedown: 'mouseup',
touchstart: 'touchend',
pointerdown: 'touchend',
MSPointerDown: 'touchend'
},
MOVE: {
mousedown: 'mousemove',
touchstart: 'touchmove',
pointerdown: 'touchmove',
MSPointerDown: 'touchmove'
}
},
initialize: function (element, dragStartTarget) {
this._element = element;
this._dragStartTarget = dragStartTarget || element;
},
enable: function () {
if (this._enabled) { return; }
for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
}
this._enabled = true;
},
disable: function () {
if (!this._enabled) { return; }
for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this);
}
this._enabled = false;
this._moved = false;
},
_onDown: function (e) {
this._moved = false;
if (e.shiftKey || ((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; }
L.DomEvent.stopPropagation(e);
if (L.Draggable._disabled) { return; }
L.DomUtil.disableImageDrag();
L.DomUtil.disableTextSelection();
if (this._moving) { return; }
var first = e.touches ? e.touches[0] : e;
this._startPoint = new L.Point(first.clientX, first.clientY);
this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
L.DomEvent
.on(document, L.Draggable.MOVE[e.type], this._onMove, this)
.on(document, L.Draggable.END[e.type], this._onUp, this);
},
_onMove: function (e) {
if (e.touches && e.touches.length > 1) {
this._moved = true;
return;
}
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
newPoint = new L.Point(first.clientX, first.clientY),
offset = newPoint.subtract(this._startPoint);
if (!offset.x && !offset.y) { return; }
if (L.Browser.touch && Math.abs(offset.x) + Math.abs(offset.y) < 3) { return; }
L.DomEvent.preventDefault(e);
if (!this._moved) {
this.fire('dragstart');
this._moved = true;
this._startPos = L.DomUtil.getPosition(this._element).subtract(offset);
L.DomUtil.addClass(document.body, 'leaflet-dragging');
this._lastTarget = e.target || e.srcElement;
L.DomUtil.addClass(this._lastTarget, 'leaflet-drag-target');
}
this._newPos = this._startPos.add(offset);
this._moving = true;
L.Util.cancelAnimFrame(this._animRequest);
this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
},
_updatePosition: function () {
this.fire('predrag');
L.DomUtil.setPosition(this._element, this._newPos);
this.fire('drag');
},
_onUp: function () {
L.DomUtil.removeClass(document.body, 'leaflet-dragging');
if (this._lastTarget) {
L.DomUtil.removeClass(this._lastTarget, 'leaflet-drag-target');
this._lastTarget = null;
}
for (var i in L.Draggable.MOVE) {
L.DomEvent
.off(document, L.Draggable.MOVE[i], this._onMove)
.off(document, L.Draggable.END[i], this._onUp);
}
L.DomUtil.enableImageDrag();
L.DomUtil.enableTextSelection();
if (this._moved && this._moving) {
// ensure drag is not fired after dragend
L.Util.cancelAnimFrame(this._animRequest);
this.fire('dragend', {
distance: this._newPos.distanceTo(this._startPos)
});
}
this._moving = false;
}
});
/*
L.Handler is a base class for handler classes that are used internally to inject
interaction features like dragging to classes like Map and Marker.
*/
L.Handler = L.Class.extend({
initialize: function (map) {
this._map = map;
},
enable: function () {
if (this._enabled) { return; }
this._enabled = true;
this.addHooks();
},
disable: function () {
if (!this._enabled) { return; }
this._enabled = false;
this.removeHooks();
},
enabled: function () {
return !!this._enabled;
}
});
/*
* L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default.
*/
L.Map.mergeOptions({
dragging: true,
inertia: !L.Browser.android23,
inertiaDeceleration: 3400, // px/s^2
inertiaMaxSpeed: Infinity, // px/s
inertiaThreshold: L.Browser.touch ? 32 : 18, // ms
easeLinearity: 0.25,
// TODO refactor, move to CRS
worldCopyJump: false
});
L.Map.Drag = L.Handler.extend({
addHooks: function () {
if (!this._draggable) {
var map = this._map;
this._draggable = new L.Draggable(map._mapPane, map._container);
this._draggable.on({
'dragstart': this._onDragStart,
'drag': this._onDrag,
'dragend': this._onDragEnd
}, this);
if (map.options.worldCopyJump) {
this._draggable.on('predrag', this._onPreDrag, this);
map.on('viewreset', this._onViewReset, this);
map.whenReady(this._onViewReset, this);
}
}
this._draggable.enable();
},
removeHooks: function () {
this._draggable.disable();
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function () {
var map = this._map;
if (map._panAnim) {
map._panAnim.stop();
}
map
.fire('movestart')
.fire('dragstart');
if (map.options.inertia) {
this._positions = [];
this._times = [];
}
},
_onDrag: function () {
if (this._map.options.inertia) {
var time = this._lastTime = +new Date(),
pos = this._lastPos = this._draggable._newPos;
this._positions.push(pos);
this._times.push(time);
if (time - this._times[0] > 200) {
this._positions.shift();
this._times.shift();
}
}
this._map
.fire('move')
.fire('drag');
},
_onViewReset: function () {
// TODO fix hardcoded Earth values
var pxCenter = this._map.getSize()._divideBy(2),
pxWorldCenter = this._map.latLngToLayerPoint([0, 0]);
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
this._worldWidth = this._map.project([0, 180]).x;
},
_onPreDrag: function () {
// TODO refactor to be able to adjust map pane position after zoom
var worldWidth = this._worldWidth,
halfWidth = Math.round(worldWidth / 2),
dx = this._initialWorldOffset,
x = this._draggable._newPos.x,
newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
this._draggable._newPos.x = newX;
},
_onDragEnd: function (e) {
var map = this._map,
options = map.options,
delay = +new Date() - this._lastTime,
noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0];
map.fire('dragend', e);
if (noInertia) {
map.fire('moveend');
} else {
var direction = this._lastPos.subtract(this._positions[0]),
duration = (this._lastTime + delay - this._times[0]) / 1000,
ease = options.easeLinearity,
speedVector = direction.multiplyBy(ease / duration),
speed = speedVector.distanceTo([0, 0]),
limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease),
offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
if (!offset.x || !offset.y) {
map.fire('moveend');
} else {
offset = map._limitOffset(offset, map.options.maxBounds);
L.Util.requestAnimFrame(function () {
map.panBy(offset, {
duration: decelerationDuration,
easeLinearity: ease,
noMoveStart: true
});
});
}
}
}
});
L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
/*
* L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
*/
L.Map.mergeOptions({
doubleClickZoom: true
});
L.Map.DoubleClickZoom = L.Handler.extend({
addHooks: function () {
this._map.on('dblclick', this._onDoubleClick, this);
},
removeHooks: function () {
this._map.off('dblclick', this._onDoubleClick, this);
},
_onDoubleClick: function (e) {
var map = this._map,
zoom = map.getZoom() + (e.originalEvent.shiftKey ? -1 : 1);
if (map.options.doubleClickZoom === 'center') {
map.setZoom(zoom);
} else {
map.setZoomAround(e.containerPoint, zoom);
}
}
});
L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
/*
* L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map.
*/
L.Map.mergeOptions({
scrollWheelZoom: true
});
L.Map.ScrollWheelZoom = L.Handler.extend({
addHooks: function () {
L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
L.DomEvent.on(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
this._delta = 0;
},
removeHooks: function () {
L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
L.DomEvent.off(this._map._container, 'MozMousePixelScroll', L.DomEvent.preventDefault);
},
_onWheelScroll: function (e) {
var delta = L.DomEvent.getWheelDelta(e);
this._delta += delta;
this._lastMousePos = this._map.mouseEventToContainerPoint(e);
if (!this._startTime) {
this._startTime = +new Date();
}
var left = Math.max(40 - (+new Date() - this._startTime), 0);
clearTimeout(this._timer);
this._timer = setTimeout(L.bind(this._performZoom, this), left);
L.DomEvent.preventDefault(e);
L.DomEvent.stopPropagation(e);
},
_performZoom: function () {
var map = this._map,
delta = this._delta,
zoom = map.getZoom();
delta = delta > 0 ? Math.ceil(delta) : Math.floor(delta);
delta = Math.max(Math.min(delta, 4), -4);
delta = map._limitZoom(zoom + delta) - zoom;
this._delta = 0;
this._startTime = null;
if (!delta) { return; }
if (map.options.scrollWheelZoom === 'center') {
map.setZoom(zoom + delta);
} else {
map.setZoomAround(this._lastMousePos, zoom + delta);
}
}
});
L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
/*
* Extends the event handling code with double tap support for mobile browsers.
*/
L.extend(L.DomEvent, {
_touchstart: L.Browser.msPointer ? 'MSPointerDown' : L.Browser.pointer ? 'pointerdown' : 'touchstart',
_touchend: L.Browser.msPointer ? 'MSPointerUp' : L.Browser.pointer ? 'pointerup' : 'touchend',
// inspired by Zepto touch code by Thomas Fuchs
addDoubleTapListener: function (obj, handler, id) {
var last,
doubleTap = false,
delay = 250,
touch,
pre = '_leaflet_',
touchstart = this._touchstart,
touchend = this._touchend,
trackedTouches = [];
function onTouchStart(e) {
var count;
if (L.Browser.pointer) {
trackedTouches.push(e.pointerId);
count = trackedTouches.length;
} else {
count = e.touches.length;
}
if (count > 1) {
return;
}
var now = Date.now(),
delta = now - (last || now);
touch = e.touches ? e.touches[0] : e;
doubleTap = (delta > 0 && delta <= delay);
last = now;
}
function onTouchEnd(e) {
if (L.Browser.pointer) {
var idx = trackedTouches.indexOf(e.pointerId);
if (idx === -1) {
return;
}
trackedTouches.splice(idx, 1);
}
if (doubleTap) {
if (L.Browser.pointer) {
// work around .type being readonly with MSPointer* events
var newTouch = { },
prop;
// jshint forin:false
for (var i in touch) {
prop = touch[i];
if (typeof prop === 'function') {
newTouch[i] = prop.bind(touch);
} else {
newTouch[i] = prop;
}
}
touch = newTouch;
}
touch.type = 'dblclick';
handler(touch);
last = null;
}
}
obj[pre + touchstart + id] = onTouchStart;
obj[pre + touchend + id] = onTouchEnd;
// on pointer we need to listen on the document, otherwise a drag starting on the map and moving off screen
// will not come through to us, so we will lose track of how many touches are ongoing
var endElement = L.Browser.pointer ? document.documentElement : obj;
obj.addEventListener(touchstart, onTouchStart, false);
endElement.addEventListener(touchend, onTouchEnd, false);
if (L.Browser.pointer) {
endElement.addEventListener(L.DomEvent.POINTER_CANCEL, onTouchEnd, false);
}
return this;
},
removeDoubleTapListener: function (obj, id) {
var pre = '_leaflet_';
obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false);
(L.Browser.pointer ? document.documentElement : obj).removeEventListener(
this._touchend, obj[pre + this._touchend + id], false);
if (L.Browser.pointer) {
document.documentElement.removeEventListener(L.DomEvent.POINTER_CANCEL, obj[pre + this._touchend + id],
false);
}
return this;
}
});
/*
* Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices.
*/
L.extend(L.DomEvent, {
//static
POINTER_DOWN: L.Browser.msPointer ? 'MSPointerDown' : 'pointerdown',
POINTER_MOVE: L.Browser.msPointer ? 'MSPointerMove' : 'pointermove',
POINTER_UP: L.Browser.msPointer ? 'MSPointerUp' : 'pointerup',
POINTER_CANCEL: L.Browser.msPointer ? 'MSPointerCancel' : 'pointercancel',
_pointers: [],
_pointerDocumentListener: false,
// Provides a touch events wrapper for (ms)pointer events.
// Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019
//ref http://www.w3.org/TR/pointerevents/ https://www.w3.org/Bugs/Public/show_bug.cgi?id=22890
addPointerListener: function (obj, type, handler, id) {
switch (type) {
case 'touchstart':
return this.addPointerListenerStart(obj, type, handler, id);
case 'touchend':
return this.addPointerListenerEnd(obj, type, handler, id);
case 'touchmove':
return this.addPointerListenerMove(obj, type, handler, id);
default:
throw 'Unknown touch event type';
}
},
addPointerListenerStart: function (obj, type, handler, id) {
var pre = '_leaflet_',
pointers = this._pointers;
var cb = function (e) {
L.DomEvent.preventDefault(e);
var alreadyInArray = false;
for (var i = 0; i < pointers.length; i++) {
if (pointers[i].pointerId === e.pointerId) {
alreadyInArray = true;
break;
}
}
if (!alreadyInArray) {
pointers.push(e);
}
e.touches = pointers.slice();
e.changedTouches = [e];
handler(e);
};
obj[pre + 'touchstart' + id] = cb;
obj.addEventListener(this.POINTER_DOWN, cb, false);
// need to also listen for end events to keep the _pointers list accurate
// this needs to be on the body and never go away
if (!this._pointerDocumentListener) {
var internalCb = function (e) {
for (var i = 0; i < pointers.length; i++) {
if (pointers[i].pointerId === e.pointerId) {
pointers.splice(i, 1);
break;
}
}
};
//We listen on the documentElement as any drags that end by moving the touch off the screen get fired there
document.documentElement.addEventListener(this.POINTER_UP, internalCb, false);
document.documentElement.addEventListener(this.POINTER_CANCEL, internalCb, false);
this._pointerDocumentListener = true;
}
return this;
},
addPointerListenerMove: function (obj, type, handler, id) {
var pre = '_leaflet_',
touches = this._pointers;
function cb(e) {
// don't fire touch moves when mouse isn't down
if ((e.pointerType === e.MSPOINTER_TYPE_MOUSE || e.pointerType === 'mouse') && e.buttons === 0) { return; }
for (var i = 0; i < touches.length; i++) {
if (touches[i].pointerId === e.pointerId) {
touches[i] = e;
break;
}
}
e.touches = touches.slice();
e.changedTouches = [e];
handler(e);
}
obj[pre + 'touchmove' + id] = cb;
obj.addEventListener(this.POINTER_MOVE, cb, false);
return this;
},
addPointerListenerEnd: function (obj, type, handler, id) {
var pre = '_leaflet_',
touches = this._pointers;
var cb = function (e) {
for (var i = 0; i < touches.length; i++) {
if (touches[i].pointerId === e.pointerId) {
touches.splice(i, 1);
break;
}
}
e.touches = touches.slice();
e.changedTouches = [e];
handler(e);
};
obj[pre + 'touchend' + id] = cb;
obj.addEventListener(this.POINTER_UP, cb, false);
obj.addEventListener(this.POINTER_CANCEL, cb, false);
return this;
},
removePointerListener: function (obj, type, id) {
var pre = '_leaflet_',
cb = obj[pre + type + id];
switch (type) {
case 'touchstart':
obj.removeEventListener(this.POINTER_DOWN, cb, false);
break;
case 'touchmove':
obj.removeEventListener(this.POINTER_MOVE, cb, false);
break;
case 'touchend':
obj.removeEventListener(this.POINTER_UP, cb, false);
obj.removeEventListener(this.POINTER_CANCEL, cb, false);
break;
}
return this;
}
});
/*
* L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers.
*/
L.Map.mergeOptions({
touchZoom: L.Browser.touch && !L.Browser.android23,
bounceAtZoomLimits: true
});
L.Map.TouchZoom = L.Handler.extend({
addHooks: function () {
L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this);
},
removeHooks: function () {
L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this);
},
_onTouchStart: function (e) {
var map = this._map;
if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; }
var p1 = map.mouseEventToLayerPoint(e.touches[0]),
p2 = map.mouseEventToLayerPoint(e.touches[1]),
viewCenter = map._getCenterLayerPoint();
this._startCenter = p1.add(p2)._divideBy(2);
this._startDist = p1.distanceTo(p2);
this._moved = false;
this._zooming = true;
this._centerOffset = viewCenter.subtract(this._startCenter);
if (map._panAnim) {
map._panAnim.stop();
}
L.DomEvent
.on(document, 'touchmove', this._onTouchMove, this)
.on(document, 'touchend', this._onTouchEnd, this);
L.DomEvent.preventDefault(e);
},
_onTouchMove: function (e) {
var map = this._map;
if (!e.touches || e.touches.length !== 2 || !this._zooming) { return; }
var p1 = map.mouseEventToLayerPoint(e.touches[0]),
p2 = map.mouseEventToLayerPoint(e.touches[1]);
this._scale = p1.distanceTo(p2) / this._startDist;
this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter);
if (this._scale === 1) { return; }
if (!map.options.bounceAtZoomLimits) {
if ((map.getZoom() === map.getMinZoom() && this._scale < 1) ||
(map.getZoom() === map.getMaxZoom() && this._scale > 1)) { return; }
}
if (!this._moved) {
L.DomUtil.addClass(map._mapPane, 'leaflet-touching');
map
.fire('movestart')
.fire('zoomstart');
this._moved = true;
}
L.Util.cancelAnimFrame(this._animRequest);
this._animRequest = L.Util.requestAnimFrame(
this._updateOnMove, this, true, this._map._container);
L.DomEvent.preventDefault(e);
},
_updateOnMove: function () {
var map = this._map,
origin = this._getScaleOrigin(),
center = map.layerPointToLatLng(origin),
zoom = map.getScaleZoom(this._scale);
map._animateZoom(center, zoom, this._startCenter, this._scale, this._delta, false, true);
},
_onTouchEnd: function () {
if (!this._moved || !this._zooming) {
this._zooming = false;
return;
}
var map = this._map;
this._zooming = false;
L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
L.Util.cancelAnimFrame(this._animRequest);
L.DomEvent
.off(document, 'touchmove', this._onTouchMove)
.off(document, 'touchend', this._onTouchEnd);
var origin = this._getScaleOrigin(),
center = map.layerPointToLatLng(origin),
oldZoom = map.getZoom(),
floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom,
roundZoomDelta = (floatZoomDelta > 0 ?
Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
zoom = map._limitZoom(oldZoom + roundZoomDelta),
scale = map.getZoomScale(zoom) / this._scale;
map._animateZoom(center, zoom, origin, scale);
},
_getScaleOrigin: function () {
var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale);
return this._startCenter.add(centerOffset);
}
});
L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom);
/*
* L.Map.Tap is used to enable mobile hacks like quick taps and long hold.
*/
L.Map.mergeOptions({
tap: true,
tapTolerance: 15
});
L.Map.Tap = L.Handler.extend({
addHooks: function () {
L.DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
},
removeHooks: function () {
L.DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
},
_onDown: function (e) {
if (!e.touches) { return; }
L.DomEvent.preventDefault(e);
this._fireClick = true;
// don't simulate click or track longpress if more than 1 touch
if (e.touches.length > 1) {
this._fireClick = false;
clearTimeout(this._holdTimeout);
return;
}
var first = e.touches[0],
el = first.target;
this._startPos = this._newPos = new L.Point(first.clientX, first.clientY);
// if touching a link, highlight it
if (el.tagName && el.tagName.toLowerCase() === 'a') {
L.DomUtil.addClass(el, 'leaflet-active');
}
// simulate long hold but setting a timeout
this._holdTimeout = setTimeout(L.bind(function () {
if (this._isTapValid()) {
this._fireClick = false;
this._onUp();
this._simulateEvent('contextmenu', first);
}
}, this), 1000);
L.DomEvent
.on(document, 'touchmove', this._onMove, this)
.on(document, 'touchend', this._onUp, this);
},
_onUp: function (e) {
clearTimeout(this._holdTimeout);
L.DomEvent
.off(document, 'touchmove', this._onMove, this)
.off(document, 'touchend', this._onUp, this);
if (this._fireClick && e && e.changedTouches) {
var first = e.changedTouches[0],
el = first.target;
if (el && el.tagName && el.tagName.toLowerCase() === 'a') {
L.DomUtil.removeClass(el, 'leaflet-active');
}
// simulate click if the touch didn't move too much
if (this._isTapValid()) {
this._simulateEvent('click', first);
}
}
},
_isTapValid: function () {
return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
},
_onMove: function (e) {
var first = e.touches[0];
this._newPos = new L.Point(first.clientX, first.clientY);
},
_simulateEvent: function (type, e) {
var simulatedEvent = document.createEvent('MouseEvents');
simulatedEvent._simulated = true;
e.target._simulatedClick = true;
simulatedEvent.initMouseEvent(
type, true, true, window, 1,
e.screenX, e.screenY,
e.clientX, e.clientY,
false, false, false, false, 0, null);
e.target.dispatchEvent(simulatedEvent);
}
});
if (L.Browser.touch && !L.Browser.pointer) {
L.Map.addInitHook('addHandler', 'tap', L.Map.Tap);
}
/*
* L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map
* (zoom to a selected bounding box), enabled by default.
*/
L.Map.mergeOptions({
boxZoom: true
});
L.Map.BoxZoom = L.Handler.extend({
initialize: function (map) {
this._map = map;
this._container = map._container;
this._pane = map._panes.overlayPane;
this._moved = false;
},
addHooks: function () {
L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
},
removeHooks: function () {
L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
this._moved = false;
},
moved: function () {
return this._moved;
},
_onMouseDown: function (e) {
this._moved = false;
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
L.DomUtil.disableTextSelection();
L.DomUtil.disableImageDrag();
this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
L.DomEvent
.on(document, 'mousemove', this._onMouseMove, this)
.on(document, 'mouseup', this._onMouseUp, this)
.on(document, 'keydown', this._onKeyDown, this);
},
_onMouseMove: function (e) {
if (!this._moved) {
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
L.DomUtil.setPosition(this._box, this._startLayerPoint);
//TODO refactor: move cursor to styles
this._container.style.cursor = 'crosshair';
this._map.fire('boxzoomstart');
}
var startPoint = this._startLayerPoint,
box = this._box,
layerPoint = this._map.mouseEventToLayerPoint(e),
offset = layerPoint.subtract(startPoint),
newPos = new L.Point(
Math.min(layerPoint.x, startPoint.x),
Math.min(layerPoint.y, startPoint.y));
L.DomUtil.setPosition(box, newPos);
this._moved = true;
// TODO refactor: remove hardcoded 4 pixels
box.style.width = (Math.max(0, Math.abs(offset.x) - 4)) + 'px';
box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px';
},
_finish: function () {
if (this._moved) {
this._pane.removeChild(this._box);
this._container.style.cursor = '';
}
L.DomUtil.enableTextSelection();
L.DomUtil.enableImageDrag();
L.DomEvent
.off(document, 'mousemove', this._onMouseMove)
.off(document, 'mouseup', this._onMouseUp)
.off(document, 'keydown', this._onKeyDown);
},
_onMouseUp: function (e) {
this._finish();
var map = this._map,
layerPoint = map.mouseEventToLayerPoint(e);
if (this._startLayerPoint.equals(layerPoint)) { return; }
var bounds = new L.LatLngBounds(
map.layerPointToLatLng(this._startLayerPoint),
map.layerPointToLatLng(layerPoint));
map.fitBounds(bounds);
map.fire('boxzoomend', {
boxZoomBounds: bounds
});
},
_onKeyDown: function (e) {
if (e.keyCode === 27) {
this._finish();
}
}
});
L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
/*
* L.Map.Keyboard is handling keyboard interaction with the map, enabled by default.
*/
L.Map.mergeOptions({
keyboard: true,
keyboardPanOffset: 80,
keyboardZoomOffset: 1
});
L.Map.Keyboard = L.Handler.extend({
keyCodes: {
left: [37],
right: [39],
down: [40],
up: [38],
zoomIn: [187, 107, 61, 171],
zoomOut: [189, 109, 173]
},
initialize: function (map) {
this._map = map;
this._setPanOffset(map.options.keyboardPanOffset);
this._setZoomOffset(map.options.keyboardZoomOffset);
},
addHooks: function () {
var container = this._map._container;
// make the container focusable by tabbing
if (container.tabIndex === -1) {
container.tabIndex = '0';
}
L.DomEvent
.on(container, 'focus', this._onFocus, this)
.on(container, 'blur', this._onBlur, this)
.on(container, 'mousedown', this._onMouseDown, this);
this._map
.on('focus', this._addHooks, this)
.on('blur', this._removeHooks, this);
},
removeHooks: function () {
this._removeHooks();
var container = this._map._container;
L.DomEvent
.off(container, 'focus', this._onFocus, this)
.off(container, 'blur', this._onBlur, this)
.off(container, 'mousedown', this._onMouseDown, this);
this._map
.off('focus', this._addHooks, this)
.off('blur', this._removeHooks, this);
},
_onMouseDown: function () {
if (this._focused) { return; }
var body = document.body,
docEl = document.documentElement,
top = body.scrollTop || docEl.scrollTop,
left = body.scrollLeft || docEl.scrollLeft;
this._map._container.focus();
window.scrollTo(left, top);
},
_onFocus: function () {
this._focused = true;
this._map.fire('focus');
},
_onBlur: function () {
this._focused = false;
this._map.fire('blur');
},
_setPanOffset: function (pan) {
var keys = this._panKeys = {},
codes = this.keyCodes,
i, len;
for (i = 0, len = codes.left.length; i < len; i++) {
keys[codes.left[i]] = [-1 * pan, 0];
}
for (i = 0, len = codes.right.length; i < len; i++) {
keys[codes.right[i]] = [pan, 0];
}
for (i = 0, len = codes.down.length; i < len; i++) {
keys[codes.down[i]] = [0, pan];
}
for (i = 0, len = codes.up.length; i < len; i++) {
keys[codes.up[i]] = [0, -1 * pan];
}
},
_setZoomOffset: function (zoom) {
var keys = this._zoomKeys = {},
codes = this.keyCodes,
i, len;
for (i = 0, len = codes.zoomIn.length; i < len; i++) {
keys[codes.zoomIn[i]] = zoom;
}
for (i = 0, len = codes.zoomOut.length; i < len; i++) {
keys[codes.zoomOut[i]] = -zoom;
}
},
_addHooks: function () {
L.DomEvent.on(document, 'keydown', this._onKeyDown, this);
},
_removeHooks: function () {
L.DomEvent.off(document, 'keydown', this._onKeyDown, this);
},
_onKeyDown: function (e) {
var key = e.keyCode,
map = this._map;
if (key in this._panKeys) {
if (map._panAnim && map._panAnim._inProgress) { return; }
map.panBy(this._panKeys[key]);
if (map.options.maxBounds) {
map.panInsideBounds(map.options.maxBounds);
}
} else if (key in this._zoomKeys) {
map.setZoom(map.getZoom() + this._zoomKeys[key]);
} else {
return;
}
L.DomEvent.stop(e);
}
});
L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard);
/*
* L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
*/
L.Handler.MarkerDrag = L.Handler.extend({
initialize: function (marker) {
this._marker = marker;
},
addHooks: function () {
var icon = this._marker._icon;
if (!this._draggable) {
this._draggable = new L.Draggable(icon, icon);
}
this._draggable
.on('dragstart', this._onDragStart, this)
.on('drag', this._onDrag, this)
.on('dragend', this._onDragEnd, this);
this._draggable.enable();
L.DomUtil.addClass(this._marker._icon, 'leaflet-marker-draggable');
},
removeHooks: function () {
this._draggable
.off('dragstart', this._onDragStart, this)
.off('drag', this._onDrag, this)
.off('dragend', this._onDragEnd, this);
this._draggable.disable();
L.DomUtil.removeClass(this._marker._icon, 'leaflet-marker-draggable');
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function () {
this._marker
.closePopup()
.fire('movestart')
.fire('dragstart');
},
_onDrag: function () {
var marker = this._marker,
shadow = marker._shadow,
iconPos = L.DomUtil.getPosition(marker._icon),
latlng = marker._map.layerPointToLatLng(iconPos);
// update shadow position
if (shadow) {
L.DomUtil.setPosition(shadow, iconPos);
}
marker._latlng = latlng;
marker
.fire('move', {latlng: latlng})
.fire('drag');
},
_onDragEnd: function (e) {
this._marker
.fire('moveend')
.fire('dragend', e);
}
});
/*
* L.Control is a base class for implementing map controls. Handles positioning.
* All other controls extend from this class.
*/
L.Control = L.Class.extend({
options: {
position: 'topright'
},
initialize: function (options) {
L.setOptions(this, options);
},
getPosition: function () {
return this.options.position;
},
setPosition: function (position) {
var map = this._map;
if (map) {
map.removeControl(this);
}
this.options.position = position;
if (map) {
map.addControl(this);
}
return this;
},
getContainer: function () {
return this._container;
},
addTo: function (map) {
this._map = map;
var container = this._container = this.onAdd(map),
pos = this.getPosition(),
corner = map._controlCorners[pos];
L.DomUtil.addClass(container, 'leaflet-control');
if (pos.indexOf('bottom') !== -1) {
corner.insertBefore(container, corner.firstChild);
} else {
corner.appendChild(container);
}
return this;
},
removeFrom: function (map) {
var pos = this.getPosition(),
corner = map._controlCorners[pos];
corner.removeChild(this._container);
this._map = null;
if (this.onRemove) {
this.onRemove(map);
}
return this;
},
_refocusOnMap: function () {
if (this._map) {
this._map.getContainer().focus();
}
}
});
L.control = function (options) {
return new L.Control(options);
};
// adds control-related methods to L.Map
L.Map.include({
addControl: function (control) {
control.addTo(this);
return this;
},
removeControl: function (control) {
control.removeFrom(this);
return this;
},
_initControlPos: function () {
var corners = this._controlCorners = {},
l = 'leaflet-',
container = this._controlContainer =
L.DomUtil.create('div', l + 'control-container', this._container);
function createCorner(vSide, hSide) {
var className = l + vSide + ' ' + l + hSide;
corners[vSide + hSide] = L.DomUtil.create('div', className, container);
}
createCorner('top', 'left');
createCorner('top', 'right');
createCorner('bottom', 'left');
createCorner('bottom', 'right');
},
_clearControlPos: function () {
this._container.removeChild(this._controlContainer);
}
});
/*
* L.Control.Zoom is used for the default zoom buttons on the map.
*/
L.Control.Zoom = L.Control.extend({
options: {
position: 'topleft',
zoomInText: '+',
zoomInTitle: 'Zoom in',
zoomOutText: '-',
zoomOutTitle: 'Zoom out'
},
onAdd: function (map) {
var zoomName = 'leaflet-control-zoom',
container = L.DomUtil.create('div', zoomName + ' leaflet-bar');
this._map = map;
this._zoomInButton = this._createButton(
this.options.zoomInText, this.options.zoomInTitle,
zoomName + '-in', container, this._zoomIn, this);
this._zoomOutButton = this._createButton(
this.options.zoomOutText, this.options.zoomOutTitle,
zoomName + '-out', container, this._zoomOut, this);
this._updateDisabled();
map.on('zoomend zoomlevelschange', this._updateDisabled, this);
return container;
},
onRemove: function (map) {
map.off('zoomend zoomlevelschange', this._updateDisabled, this);
},
_zoomIn: function (e) {
this._map.zoomIn(e.shiftKey ? 3 : 1);
},
_zoomOut: function (e) {
this._map.zoomOut(e.shiftKey ? 3 : 1);
},
_createButton: function (html, title, className, container, fn, context) {
var link = L.DomUtil.create('a', className, container);
link.innerHTML = html;
link.href = '#';
link.title = title;
var stop = L.DomEvent.stopPropagation;
L.DomEvent
.on(link, 'click', stop)
.on(link, 'mousedown', stop)
.on(link, 'dblclick', stop)
.on(link, 'click', L.DomEvent.preventDefault)
.on(link, 'click', fn, context)
.on(link, 'click', this._refocusOnMap, context);
return link;
},
_updateDisabled: function () {
var map = this._map,
className = 'leaflet-disabled';
L.DomUtil.removeClass(this._zoomInButton, className);
L.DomUtil.removeClass(this._zoomOutButton, className);
if (map._zoom === map.getMinZoom()) {
L.DomUtil.addClass(this._zoomOutButton, className);
}
if (map._zoom === map.getMaxZoom()) {
L.DomUtil.addClass(this._zoomInButton, className);
}
}
});
L.Map.mergeOptions({
zoomControl: true
});
L.Map.addInitHook(function () {
if (this.options.zoomControl) {
this.zoomControl = new L.Control.Zoom();
this.addControl(this.zoomControl);
}
});
L.control.zoom = function (options) {
return new L.Control.Zoom(options);
};
/*
* L.Control.Attribution is used for displaying attribution on the map (added by default).
*/
L.Control.Attribution = L.Control.extend({
options: {
position: 'bottomright',
prefix: '<a href="http://leafletjs.com" title="A JS library for interactive maps">Leaflet</a>'
},
initialize: function (options) {
L.setOptions(this, options);
this._attributions = {};
},
onAdd: function (map) {
this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
L.DomEvent.disableClickPropagation(this._container);
for (var i in map._layers) {
if (map._layers[i].getAttribution) {
this.addAttribution(map._layers[i].getAttribution());
}
}
map
.on('layeradd', this._onLayerAdd, this)
.on('layerremove', this._onLayerRemove, this);
this._update();
return this._container;
},
onRemove: function (map) {
map
.off('layeradd', this._onLayerAdd)
.off('layerremove', this._onLayerRemove);
},
setPrefix: function (prefix) {
this.options.prefix = prefix;
this._update();
return this;
},
addAttribution: function (text) {
if (!text) { return; }
if (!this._attributions[text]) {
this._attributions[text] = 0;
}
this._attributions[text]++;
this._update();
return this;
},
removeAttribution: function (text) {
if (!text) { return; }
if (this._attributions[text]) {
this._attributions[text]--;
this._update();
}
return this;
},
_update: function () {
if (!this._map) { return; }
var attribs = [];
for (var i in this._attributions) {
if (this._attributions[i]) {
attribs.push(i);
}
}
var prefixAndAttribs = [];
if (this.options.prefix) {
prefixAndAttribs.push(this.options.prefix);
}
if (attribs.length) {
prefixAndAttribs.push(attribs.join(', '));
}
this._container.innerHTML = prefixAndAttribs.join(' | ');
},
_onLayerAdd: function (e) {
if (e.layer.getAttribution) {
this.addAttribution(e.layer.getAttribution());
}
},
_onLayerRemove: function (e) {
if (e.layer.getAttribution) {
this.removeAttribution(e.layer.getAttribution());
}
}
});
L.Map.mergeOptions({
attributionControl: true
});
L.Map.addInitHook(function () {
if (this.options.attributionControl) {
this.attributionControl = (new L.Control.Attribution()).addTo(this);
}
});
L.control.attribution = function (options) {
return new L.Control.Attribution(options);
};
/*
* L.Control.Scale is used for displaying metric/imperial scale on the map.
*/
L.Control.Scale = L.Control.extend({
options: {
position: 'bottomleft',
maxWidth: 100,
metric: true,
imperial: true,
updateWhenIdle: false
},
onAdd: function (map) {
this._map = map;
var className = 'leaflet-control-scale',
container = L.DomUtil.create('div', className),
options = this.options;
this._addScales(options, className, container);
map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
map.whenReady(this._update, this);
return container;
},
onRemove: function (map) {
map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this);
},
_addScales: function (options, className, container) {
if (options.metric) {
this._mScale = L.DomUtil.create('div', className + '-line', container);
}
if (options.imperial) {
this._iScale = L.DomUtil.create('div', className + '-line', container);
}
},
_update: function () {
var bounds = this._map.getBounds(),
centerLat = bounds.getCenter().lat,
halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180,
size = this._map.getSize(),
options = this.options,
maxMeters = 0;
if (size.x > 0) {
maxMeters = dist * (options.maxWidth / size.x);
}
this._updateScales(options, maxMeters);
},
_updateScales: function (options, maxMeters) {
if (options.metric && maxMeters) {
this._updateMetric(maxMeters);
}
if (options.imperial && maxMeters) {
this._updateImperial(maxMeters);
}
},
_updateMetric: function (maxMeters) {
var meters = this._getRoundNum(maxMeters);
this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px';
this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km';
},
_updateImperial: function (maxMeters) {
var maxFeet = maxMeters * 3.2808399,
scale = this._iScale,
maxMiles, miles, feet;
if (maxFeet > 5280) {
maxMiles = maxFeet / 5280;
miles = this._getRoundNum(maxMiles);
scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px';
scale.innerHTML = miles + ' mi';
} else {
feet = this._getRoundNum(maxFeet);
scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px';
scale.innerHTML = feet + ' ft';
}
},
_getScaleWidth: function (ratio) {
return Math.round(this.options.maxWidth * ratio) - 10;
},
_getRoundNum: function (num) {
var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1),
d = num / pow10;
d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1;
return pow10 * d;
}
});
L.control.scale = function (options) {
return new L.Control.Scale(options);
};
/*
* L.Control.Layers is a control to allow users to switch between different layers on the map.
*/
L.Control.Layers = L.Control.extend({
options: {
collapsed: true,
position: 'topright',
autoZIndex: true
},
initialize: function (baseLayers, overlays, options) {
L.setOptions(this, options);
this._layers = {};
this._lastZIndex = 0;
this._handlingClick = false;
for (var i in baseLayers) {
this._addLayer(baseLayers[i], i);
}
for (i in overlays) {
this._addLayer(overlays[i], i, true);
}
},
onAdd: function (map) {
this._initLayout();
this._update();
map
.on('layeradd', this._onLayerChange, this)
.on('layerremove', this._onLayerChange, this);
return this._container;
},
onRemove: function (map) {
map
.off('layeradd', this._onLayerChange, this)
.off('layerremove', this._onLayerChange, this);
},
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.stamp(layer);
delete this._layers[id];
this._update();
return this;
},
_initLayout: function () {
var className = 'leaflet-control-layers',
container = this._container = L.DomUtil.create('div', className);
//Makes this work on IE10 Touch devices by stopping it from firing a mouseout event when the touch is released
container.setAttribute('aria-haspopup', true);
if (!L.Browser.touch) {
L.DomEvent
.disableClickPropagation(container)
.disableScrollPropagation(container);
} else {
L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
}
var form = this._form = L.DomUtil.create('form', className + '-list');
if (this.options.collapsed) {
if (!L.Browser.android) {
L.DomEvent
.on(container, 'mouseover', this._expand, this)
.on(container, 'mouseout', this._collapse, this);
}
var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
link.href = '#';
link.title = 'Layers';
if (L.Browser.touch) {
L.DomEvent
.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', this._expand, this);
}
else {
L.DomEvent.on(link, 'focus', this._expand, this);
}
//Work around for Firefox android issue https://github.com/Leaflet/Leaflet/issues/2033
L.DomEvent.on(form, 'click', function () {
setTimeout(L.bind(this._onInputClick, this), 0);
}, this);
this._map.on('click', this._collapse, this);
// TODO keyboard accessibility
} else {
this._expand();
}
this._baseLayersList = L.DomUtil.create('div', className + '-base', form);
this._separator = L.DomUtil.create('div', className + '-separator', form);
this._overlaysList = L.DomUtil.create('div', className + '-overlays', form);
container.appendChild(form);
},
_addLayer: function (layer, name, overlay) {
var id = L.stamp(layer);
this._layers[id] = {
layer: layer,
name: name,
overlay: overlay
};
if (this.options.autoZIndex && layer.setZIndex) {
this._lastZIndex++;
layer.setZIndex(this._lastZIndex);
}
},
_update: function () {
if (!this._container) {
return;
}
this._baseLayersList.innerHTML = '';
this._overlaysList.innerHTML = '';
var baseLayersPresent = false,
overlaysPresent = false,
i, obj;
for (i in this._layers) {
obj = this._layers[i];
this._addItem(obj);
overlaysPresent = overlaysPresent || obj.overlay;
baseLayersPresent = baseLayersPresent || !obj.overlay;
}
this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
},
_onLayerChange: function (e) {
var obj = this._layers[L.stamp(e.layer)];
if (!obj) { return; }
if (!this._handlingClick) {
this._update();
}
var type = obj.overlay ?
(e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') :
(e.type === 'layeradd' ? 'baselayerchange' : null);
if (type) {
this._map.fire(type, obj);
}
},
// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
_createRadioElement: function (name, checked) {
var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"';
if (checked) {
radioHtml += ' checked="checked"';
}
radioHtml += '/>';
var radioFragment = document.createElement('div');
radioFragment.innerHTML = radioHtml;
return radioFragment.firstChild;
},
_addItem: function (obj) {
var label = document.createElement('label'),
input,
checked = this._map.hasLayer(obj.layer);
if (obj.overlay) {
input = document.createElement('input');
input.type = 'checkbox';
input.className = 'leaflet-control-layers-selector';
input.defaultChecked = checked;
} else {
input = this._createRadioElement('leaflet-base-layers', checked);
}
input.layerId = L.stamp(obj.layer);
L.DomEvent.on(input, 'click', this._onInputClick, this);
var name = document.createElement('span');
name.innerHTML = ' ' + obj.name;
label.appendChild(input);
label.appendChild(name);
var container = obj.overlay ? this._overlaysList : this._baseLayersList;
container.appendChild(label);
return label;
},
_onInputClick: function () {
var i, input, obj,
inputs = this._form.getElementsByTagName('input'),
inputsLen = inputs.length;
this._handlingClick = true;
for (i = 0; i < inputsLen; i++) {
input = inputs[i];
obj = this._layers[input.layerId];
if (input.checked && !this._map.hasLayer(obj.layer)) {
this._map.addLayer(obj.layer);
} else if (!input.checked && this._map.hasLayer(obj.layer)) {
this._map.removeLayer(obj.layer);
}
}
this._handlingClick = false;
this._refocusOnMap();
},
_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.control.layers = function (baseLayers, overlays, options) {
return new L.Control.Layers(baseLayers, overlays, options);
};
/*
* L.PosAnimation is used by Leaflet internally for pan animations.
*/
L.PosAnimation = L.Class.extend({
includes: L.Mixin.Events,
run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
this.stop();
this._el = el;
this._inProgress = true;
this._newPos = newPos;
this.fire('start');
el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) +
's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)';
L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
L.DomUtil.setPosition(el, newPos);
// toggle reflow, Chrome flickers for some reason if you don't do this
L.Util.falseFn(el.offsetWidth);
// there's no native way to track value updates of transitioned properties, so we imitate this
this._stepTimer = setInterval(L.bind(this._onStep, this), 50);
},
stop: function () {
if (!this._inProgress) { return; }
// if we just removed the transition property, the element would jump to its final position,
// so we need to make it stay at the current position
L.DomUtil.setPosition(this._el, this._getPos());
this._onTransitionEnd();
L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation
},
_onStep: function () {
var stepPos = this._getPos();
if (!stepPos) {
this._onTransitionEnd();
return;
}
// jshint camelcase: false
// make L.DomUtil.getPosition return intermediate position value during animation
this._el._leaflet_pos = stepPos;
this.fire('step');
},
// you can't easily get intermediate values of properties animated with CSS3 Transitions,
// we need to parse computed style (in case of transform it returns matrix string)
_transformRe: /([-+]?(?:\d*\.)?\d+)\D*, ([-+]?(?:\d*\.)?\d+)\D*\)/,
_getPos: function () {
var left, top, matches,
el = this._el,
style = window.getComputedStyle(el);
if (L.Browser.any3d) {
matches = style[L.DomUtil.TRANSFORM].match(this._transformRe);
if (!matches) { return; }
left = parseFloat(matches[1]);
top = parseFloat(matches[2]);
} else {
left = parseFloat(style.left);
top = parseFloat(style.top);
}
return new L.Point(left, top, true);
},
_onTransitionEnd: function () {
L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this);
if (!this._inProgress) { return; }
this._inProgress = false;
this._el.style[L.DomUtil.TRANSITION] = '';
// jshint camelcase: false
// make sure L.DomUtil.getPosition returns the final position value after animation
this._el._leaflet_pos = this._newPos;
clearInterval(this._stepTimer);
this.fire('step').fire('end');
}
});
/*
* Extends L.Map to handle panning animations.
*/
L.Map.include({
setView: function (center, zoom, options) {
zoom = zoom === undefined ? this._zoom : this._limitZoom(zoom);
center = this._limitCenter(L.latLng(center), zoom, this.options.maxBounds);
options = options || {};
if (this._panAnim) {
this._panAnim.stop();
}
if (this._loaded && !options.reset && options !== true) {
if (options.animate !== undefined) {
options.zoom = L.extend({animate: options.animate}, options.zoom);
options.pan = L.extend({animate: options.animate}, options.pan);
}
// try animating pan or zoom
var animated = (this._zoom !== zoom) ?
this._tryAnimatedZoom && this._tryAnimatedZoom(center, zoom, options.zoom) :
this._tryAnimatedPan(center, options.pan);
if (animated) {
// prevent resize handler call, the view will refresh after animation anyway
clearTimeout(this._sizeTimer);
return this;
}
}
// animation didn't start, just reset the map view
this._resetView(center, zoom);
return this;
},
panBy: function (offset, options) {
offset = L.point(offset).round();
options = options || {};
if (!offset.x && !offset.y) {
return this;
}
if (!this._panAnim) {
this._panAnim = new L.PosAnimation();
this._panAnim.on({
'step': this._onPanTransitionStep,
'end': this._onPanTransitionEnd
}, this);
}
// don't fire movestart if animating inertia
if (!options.noMoveStart) {
this.fire('movestart');
}
// animate pan unless animate: false specified
if (options.animate !== false) {
L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
var newPos = this._getMapPanePos().subtract(offset);
this._panAnim.run(this._mapPane, newPos, options.duration || 0.25, options.easeLinearity);
} else {
this._rawPanBy(offset);
this.fire('move').fire('moveend');
}
return this;
},
_onPanTransitionStep: function () {
this.fire('move');
},
_onPanTransitionEnd: function () {
L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
this.fire('moveend');
},
_tryAnimatedPan: function (center, options) {
// difference between the new and current centers in pixels
var offset = this._getCenterOffset(center)._floor();
// don't animate too far unless animate: true specified in options
if ((options && options.animate) !== true && !this.getSize().contains(offset)) { return false; }
this.panBy(offset, options);
return true;
}
});
/*
* L.PosAnimation fallback implementation that powers Leaflet pan animations
* in browsers that don't support CSS3 Transitions.
*/
L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({
run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number])
this.stop();
this._el = el;
this._inProgress = true;
this._duration = duration || 0.25;
this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2);
this._startPos = L.DomUtil.getPosition(el);
this._offset = newPos.subtract(this._startPos);
this._startTime = +new Date();
this.fire('start');
this._animate();
},
stop: function () {
if (!this._inProgress) { return; }
this._step();
this._complete();
},
_animate: function () {
// animation loop
this._animId = L.Util.requestAnimFrame(this._animate, this);
this._step();
},
_step: function () {
var elapsed = (+new Date()) - this._startTime,
duration = this._duration * 1000;
if (elapsed < duration) {
this._runFrame(this._easeOut(elapsed / duration));
} else {
this._runFrame(1);
this._complete();
}
},
_runFrame: function (progress) {
var pos = this._startPos.add(this._offset.multiplyBy(progress));
L.DomUtil.setPosition(this._el, pos);
this.fire('step');
},
_complete: function () {
L.Util.cancelAnimFrame(this._animId);
this._inProgress = false;
this.fire('end');
},
_easeOut: function (t) {
return 1 - Math.pow(1 - t, this._easeOutPower);
}
});
/*
* Extends L.Map to handle zoom animations.
*/
L.Map.mergeOptions({
zoomAnimation: true,
zoomAnimationThreshold: 4
});
if (L.DomUtil.TRANSITION) {
L.Map.addInitHook(function () {
// don't animate on browsers without hardware-accelerated transitions or old Android/Opera
this._zoomAnimated = this.options.zoomAnimation && L.DomUtil.TRANSITION &&
L.Browser.any3d && !L.Browser.android23 && !L.Browser.mobileOpera;
// zoom transitions run with the same duration for all layers, so if one of transitionend events
// happens after starting zoom animation (propagating to the map pane), we know that it ended globally
if (this._zoomAnimated) {
L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this);
}
});
}
L.Map.include(!L.DomUtil.TRANSITION ? {} : {
_catchTransitionEnd: function (e) {
if (this._animatingZoom && e.propertyName.indexOf('transform') >= 0) {
this._onZoomTransitionEnd();
}
},
_nothingToAnimate: function () {
return !this._container.getElementsByClassName('leaflet-zoom-animated').length;
},
_tryAnimatedZoom: function (center, zoom, options) {
if (this._animatingZoom) { return true; }
options = options || {};
// don't animate if disabled, not supported or zoom difference is too large
if (!this._zoomAnimated || options.animate === false || this._nothingToAnimate() ||
Math.abs(zoom - this._zoom) > this.options.zoomAnimationThreshold) { return false; }
// offset is the pixel coords of the zoom origin relative to the current center
var scale = this.getZoomScale(zoom),
offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale),
origin = this._getCenterLayerPoint()._add(offset);
// don't animate if the zoom origin isn't within one screen from the current center, unless forced
if (options.animate !== true && !this.getSize().contains(offset)) { return false; }
this
.fire('movestart')
.fire('zoomstart');
this._animateZoom(center, zoom, origin, scale, null, true);
return true;
},
_animateZoom: function (center, zoom, origin, scale, delta, backwards, forTouchZoom) {
if (!forTouchZoom) {
this._animatingZoom = true;
}
// put transform transition on all layers with leaflet-zoom-animated class
L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
// remember what center/zoom to set after animation
this._animateToCenter = center;
this._animateToZoom = zoom;
// disable any dragging during animation
if (L.Draggable) {
L.Draggable._disabled = true;
}
L.Util.requestAnimFrame(function () {
this.fire('zoomanim', {
center: center,
zoom: zoom,
origin: origin,
scale: scale,
delta: delta,
backwards: backwards
});
}, this);
},
_onZoomTransitionEnd: function () {
this._animatingZoom = false;
L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
this._resetView(this._animateToCenter, this._animateToZoom, true, true);
if (L.Draggable) {
L.Draggable._disabled = false;
}
}
});
/*
Zoom animation logic for L.TileLayer.
*/
L.TileLayer.include({
_animateZoom: function (e) {
if (!this._animating) {
this._animating = true;
this._prepareBgBuffer();
}
var bg = this._bgBuffer,
transform = L.DomUtil.TRANSFORM,
initialTransform = e.delta ? L.DomUtil.getTranslateString(e.delta) : bg.style[transform],
scaleStr = L.DomUtil.getScaleString(e.scale, e.origin);
bg.style[transform] = e.backwards ?
scaleStr + ' ' + initialTransform :
initialTransform + ' ' + scaleStr;
},
_endZoomAnim: function () {
var front = this._tileContainer,
bg = this._bgBuffer;
front.style.visibility = '';
front.parentNode.appendChild(front); // Bring to fore
// force reflow
L.Util.falseFn(bg.offsetWidth);
this._animating = false;
},
_clearBgBuffer: function () {
var map = this._map;
if (map && !map._animatingZoom && !map.touchZoom._zooming) {
this._bgBuffer.innerHTML = '';
this._bgBuffer.style[L.DomUtil.TRANSFORM] = '';
}
},
_prepareBgBuffer: function () {
var front = this._tileContainer,
bg = this._bgBuffer;
// if foreground layer doesn't have many tiles but bg layer does,
// keep the existing bg layer and just zoom it some more
var bgLoaded = this._getLoadedTilesPercentage(bg),
frontLoaded = this._getLoadedTilesPercentage(front);
if (bg && bgLoaded > 0.5 && frontLoaded < 0.5) {
front.style.visibility = 'hidden';
this._stopLoadingImages(front);
return;
}
// prepare the buffer to become the front tile pane
bg.style.visibility = 'hidden';
bg.style[L.DomUtil.TRANSFORM] = '';
// switch out the current layer to be the new bg layer (and vice-versa)
this._tileContainer = bg;
bg = this._bgBuffer = front;
this._stopLoadingImages(bg);
//prevent bg buffer from clearing right after zoom
clearTimeout(this._clearBgBufferTimer);
},
_getLoadedTilesPercentage: function (container) {
var tiles = container.getElementsByTagName('img'),
i, len, count = 0;
for (i = 0, len = tiles.length; i < len; i++) {
if (tiles[i].complete) {
count++;
}
}
return count / len;
},
// stops loading all tiles in the background layer
_stopLoadingImages: function (container) {
var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')),
i, len, tile;
for (i = 0, len = tiles.length; i < len; i++) {
tile = tiles[i];
if (!tile.complete) {
tile.onload = L.Util.falseFn;
tile.onerror = L.Util.falseFn;
tile.src = L.Util.emptyImageUrl;
tile.parentNode.removeChild(tile);
}
}
}
});
/*
* Provides L.Map with convenient shortcuts for using browser geolocation features.
*/
L.Map.include({
_defaultLocateOptions: {
watch: false,
setView: false,
maxZoom: Infinity,
timeout: 10000,
maximumAge: 0,
enableHighAccuracy: false
},
locate: function (/*Object*/ options) {
options = this._locateOptions = L.extend(this._defaultLocateOptions, options);
if (!navigator.geolocation) {
this._handleGeolocationError({
code: 0,
message: 'Geolocation not supported.'
});
return this;
}
var onResponse = L.bind(this._handleGeolocationResponse, this),
onError = L.bind(this._handleGeolocationError, this);
if (options.watch) {
this._locationWatchId =
navigator.geolocation.watchPosition(onResponse, onError, options);
} else {
navigator.geolocation.getCurrentPosition(onResponse, onError, options);
}
return this;
},
stopLocate: function () {
if (navigator.geolocation) {
navigator.geolocation.clearWatch(this._locationWatchId);
}
if (this._locateOptions) {
this._locateOptions.setView = false;
}
return this;
},
_handleGeolocationError: function (error) {
var c = error.code,
message = error.message ||
(c === 1 ? 'permission denied' :
(c === 2 ? 'position unavailable' : 'timeout'));
if (this._locateOptions.setView && !this._loaded) {
this.fitWorld();
}
this.fire('locationerror', {
code: c,
message: 'Geolocation error: ' + message + '.'
});
},
_handleGeolocationResponse: function (pos) {
var lat = pos.coords.latitude,
lng = pos.coords.longitude,
latlng = new L.LatLng(lat, lng),
latAccuracy = 180 * pos.coords.accuracy / 40075017,
lngAccuracy = latAccuracy / Math.cos(L.LatLng.DEG_TO_RAD * lat),
bounds = L.latLngBounds(
[lat - latAccuracy, lng - lngAccuracy],
[lat + latAccuracy, lng + lngAccuracy]),
options = this._locateOptions;
if (options.setView) {
var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
this.setView(latlng, zoom);
}
var data = {
latlng: latlng,
bounds: bounds,
timestamp: pos.timestamp
};
for (var i in pos.coords) {
if (typeof pos.coords[i] === 'number') {
data[i] = pos.coords[i];
}
}
this.fire('locationfound', data);
}
});
}(window, document));