/*
Copyright (c) 2010-2012, CloudMade, Vladimir Agafonkin
Leaflet is an open-source JavaScript library for mobile-friendly interactive maps.
http://leaflet.cloudmade.com
*/
(function (window, undefined) {
var L, originalL;
if (typeof exports !== undefined + '') {
L = exports;
} else {
originalL = window.L;
L = {};
L.noConflict = function () {
window.L = originalL;
return this;
};
window.L = L;
}
L.version = '0.4.1';
/*
* L.Util is a namespace for various utility functions.
*/
L.Util = {
extend: function (/*Object*/ dest) /*-> Object*/ { // merge src properties into dest
var sources = Array.prototype.slice.call(arguments, 1);
for (var j = 0, len = sources.length, src; j < len; j++) {
src = sources[j] || {};
for (var 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 (/*Object*/ obj) {
obj[key] = obj[key] || ++lastId;
return obj[key];
};
}()),
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;
},
splitWords: function (str) {
return str.replace(/^\s+|\s+$/g, '').split(/\s+/);
},
setOptions: function (obj, options) {
obj.options = L.Util.extend({}, obj.options, options);
return obj.options;
},
getParamString: function (obj) {
var params = [];
for (var i in obj) {
if (obj.hasOwnProperty(i)) {
params.push(i + '=' + obj[i]);
}
}
return '?' + params.join('&');
},
template: function (str, data) {
return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) {
var value = data[key];
if (!data.hasOwnProperty(key)) {
throw new Error('No value provided for variable ' + str);
}
return value;
});
},
emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs='
};
(function () {
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;
}
function timeoutDefer(fn) {
return window.setTimeout(fn, 1000 / 60);
}
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.Util.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);
}
};
}());
/*
* Class powers the OOP facilities of the library. Thanks to John Resig and Dean Edwards for inspiration!
*/
L.Class = function () {};
L.Class.extend = function (/*Object*/ props) /*-> Class*/ {
// extended class with the new prototype
var NewClass = function () {
if (this.initialize) {
this.initialize.apply(this, arguments);
}
};
// 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.Util.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.Util.extend({}, proto.options, props.options);
}
// mix given properties into the prototype
L.Util.extend(proto, props);
return NewClass;
};
// method for adding properties to prototype
L.Class.include = function (props) {
L.Util.extend(this.prototype, props);
};
L.Class.mergeOptions = function (options) {
L.Util.extend(this.prototype.options, options);
};
/*
* L.Mixin.Events adds custom events functionality to Leaflet classes
*/
var key = '_leaflet_events';
L.Mixin = {};
L.Mixin.Events = {
addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object])
var events = this[key] = this[key] || {},
type, i, len;
// Types can be a map of types/handlers
if (typeof types === 'object') {
for (type in types) {
if (types.hasOwnProperty(type)) {
this.addEventListener(type, types[type], fn);
}
}
return this;
}
types = L.Util.splitWords(types);
for (i = 0, len = types.length; i < len; i++) {
events[types[i]] = events[types[i]] || [];
events[types[i]].push({
action: fn,
context: context || this
});
}
return this;
},
hasEventListeners: function (type) { // (String) -> Boolean
return (key in this) && (type in this[key]) && (this[key][type].length > 0);
},
removeEventListener: function (types, fn, context) { // (String[, Function, Object]) or (Object[, Object])
var events = this[key],
type, i, len, listeners, j;
if (typeof types === 'object') {
for (type in types) {
if (types.hasOwnProperty(type)) {
this.removeEventListener(type, types[type], fn);
}
}
return this;
}
types = L.Util.splitWords(types);
for (i = 0, len = types.length; i < len; i++) {
if (this.hasEventListeners(types[i])) {
listeners = events[types[i]];
for (j = listeners.length - 1; j >= 0; j--) {
if (
(!fn || listeners[j].action === fn) &&
(!context || (listeners[j].context === context))
) {
listeners.splice(j, 1);
}
}
}
}
return this;
},
fireEvent: function (type, data) { // (String[, Object])
if (!this.hasEventListeners(type)) {
return this;
}
var event = L.Util.extend({
type: type,
target: this
}, data);
var listeners = this[key][type].slice();
for (var i = 0, len = listeners.length; i < len; i++) {
listeners[i].action.call(listeners[i].context || this, event);
}
return this;
}
};
L.Mixin.Events.on = L.Mixin.Events.addEventListener;
L.Mixin.Events.off = L.Mixin.Events.removeEventListener;
L.Mixin.Events.fire = L.Mixin.Events.fireEvent;
(function () {
var ua = navigator.userAgent.toLowerCase(),
ie = !!window.ActiveXObject,
ie6 = ie && !window.XMLHttpRequest,
webkit = ua.indexOf("webkit") !== -1,
gecko = ua.indexOf("gecko") !== -1,
//Terrible browser detection to work around a safari / iOS / android browser bug. See TileLayer._addTile and debug/hacks/jitter.html
chrome = ua.indexOf("chrome") !== -1,
opera = window.opera,
android = ua.indexOf("android") !== -1,
android23 = ua.search("android [23]") !== -1,
mobile = typeof orientation !== undefined + '' ? true : false,
doc = document.documentElement,
ie3d = ie && ('transition' in doc.style),
webkit3d = webkit && ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()),
gecko3d = gecko && ('MozPerspective' in doc.style),
opera3d = opera && ('OTransition' in doc.style);
var touch = !window.L_NO_TOUCH && (function () {
var startName = 'ontouchstart';
// WebKit, etc
if (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;
}());
var retina = (('devicePixelRatio' in window && window.devicePixelRatio > 1) || ('matchMedia' in window && window.matchMedia("(min-resolution:144dpi)").matches));
L.Browser = {
ua: ua,
ie: ie,
ie6: ie6,
webkit: webkit,
gecko: gecko,
opera: opera,
android: android,
android23: android23,
chrome: chrome,
ie3d: ie3d,
webkit3d: webkit3d,
gecko3d: gecko3d,
opera3d: opera3d,
any3d: !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d),
mobile: mobile,
mobileWebkit: mobile && webkit,
mobileWebkit3d: mobile && webkit3d,
mobileOpera: mobile && opera,
touch: touch,
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 = {
add: function (point) {
return this.clone()._add(L.point(point));
},
_add: function (point) {
this.x += point.x;
this.y += point.y;
return this;
},
subtract: function (point) {
return this.clone()._subtract(L.point(point));
},
// destructive subtract (faster)
_subtract: function (point) {
this.x -= point.x;
this.y -= point.y;
return this;
},
divideBy: function (num, round) {
return new L.Point(this.x / num, this.y / num, round);
},
multiplyBy: function (num, round) {
return new L.Point(this.x * num, this.y * num, round);
},
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);
},
round: function () {
return this.clone()._round();
},
// destructive 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;
},
clone: function () {
return new L.Point(this.x, 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 (x instanceof Array) {
return new L.Point(x[0], x[1]);
}
if (isNaN(x)) {
return x;
}
return new L.Point(x, y, round);
};
/*
* L.Bounds represents a rectangular area on the screen in pixel coordinates.
*/
L.Bounds = L.Class.extend({
initialize: 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]);
}
},
// 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);
},
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;
var xIntersects = (max2.x >= min.x) && (min2.x <= max.x),
yIntersects = (max2.y >= min.y) && (min2.y <= max.y);
return xIntersects && yIntersects;
}
});
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 = L.Class.extend({
initialize: function (/*Number*/ a, /*Number*/ b, /*Number*/ c, /*Number*/ d) {
this._a = a;
this._b = b;
this._c = c;
this._d = d;
},
transform: function (point, scale) {
return this._transform(point.clone(), scale);
},
// destructive transform (faster)
_transform: function (/*Point*/ point, /*Number*/ scale) /*-> Point*/ {
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*/ point, /*Number*/ scale) /*-> Point*/ {
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') {
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;
do {
top += el.offsetTop || 0;
left += el.offsetLeft || 0;
if (el.offsetParent === docBody &&
L.DomUtil.getStyle(el, 'position') === 'absolute') {
break;
}
if (L.DomUtil.getStyle(el, 'position') === 'fixed') {
top += docBody.scrollTop || 0;
left += docBody.scrollLeft || 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);
},
create: function (tagName, className, container) {
var el = document.createElement(tagName);
el.className = className;
if (container) {
container.appendChild(el);
}
return el;
},
disableTextSelection: function () {
if (document.selection && document.selection.empty) {
document.selection.empty();
}
if (!this._onselectstart) {
this._onselectstart = document.onselectstart;
document.onselectstart = L.Util.falseFn;
}
},
enableTextSelection: function () {
document.onselectstart = this._onselectstart;
this._onselectstart = null;
},
hasClass: function (el, name) {
return (el.className.length > 0) &&
new RegExp("(^|\\s)" + name + "(\\s|$)").test(el.className);
},
addClass: function (el, name) {
if (!L.DomUtil.hasClass(el, name)) {
el.className += (el.className ? ' ' : '') + name;
}
},
removeClass: function (el, name) {
function replaceFn(w, match) {
if (match === name) {
return '';
}
return w;
}
el.className = el.className
.replace(/(\S+)\s*/g, replaceFn)
.replace(/(^\s+|\s+$)/, '');
},
setOpacity: function (el, value) {
if ('opacity' in el.style) {
el.style.opacity = value;
} else if (L.Browser.ie) {
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) {}
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/MobileSafari/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),
scaleStr = ' scale(' + scale + ') ',
postTranslateStr = L.DomUtil.getTranslateString(origin.multiplyBy(-1));
return preTranslateStr + scaleStr + postTranslateStr;
},
setPosition: function (el, point, disable3D) {
el._leaflet_pos = point;
if (!disable3D && L.Browser.any3d) {
el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point);
// workaround for Android 2/3 stability (https://github.com/CloudMade/Leaflet/issues/69)
if (L.Browser.mobileWebkit3d) {
el.style.WebkitBackfaceVisibility = 'hidden';
}
} else {
el.style.left = point.x + 'px';
el.style.top = point.y + 'px';
}
},
getPosition: function (el) {
return el._leaflet_pos;
}
};
L.Util.extend(L.DomUtil, {
TRANSITION: L.DomUtil.testProp(['transition', 'webkitTransition', 'OTransition', 'MozTransition', 'msTransition']),
TRANSFORM: L.DomUtil.testProp(['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform'])
});
/*
CM.LatLng represents a geographical point with latitude and longtitude coordinates.
*/
L.LatLng = function (rawLat, rawLng, noWrap) { // (Number, Number[, Boolean])
var lat = parseFloat(rawLat),
lng = parseFloat(rawLng);
if (isNaN(lat) || isNaN(lng)) {
throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')');
}
if (noWrap !== true) {
lat = Math.max(Math.min(lat, 90), -90); // clamp latitude into -90..90
lng = (lng + 180) % 360 + ((lng < -180 || lng === 180) ? 180 : -180); // wrap longtitude into -180..180
}
this.lat = lat;
this.lng = lng;
};
L.Util.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 () { // -> String
return 'LatLng(' +
L.Util.formatNum(this.lat) + ', ' +
L.Util.formatNum(this.lng) + ')';
},
// Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula
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));
}
};
L.latLng = function (a, b, c) { // (LatLng) or ([Number, Number]) or (Number, Number, Boolean)
if (a instanceof L.LatLng) {
return a;
}
if (a instanceof Array) {
return new L.LatLng(a[0], a[1]);
}
if (isNaN(a)) {
return a;
}
return new L.LatLng(a, b, c);
};
/*
* L.LatLngBounds represents a rectangular area on the map in geographical coordinates.
*/
L.LatLngBounds = L.Class.extend({
initialize: 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]);
}
},
// extend the bounds to contain the given point or bounds
extend: function (obj) { // (LatLng) or (LatLngBounds)
if (typeof obj[0] === 'number' || obj instanceof L.LatLng) {
obj = L.latLng(obj);
} else {
obj = L.latLngBounds(obj);
}
if (obj instanceof L.LatLng) {
if (!this._southWest && !this._northEast) {
this._southWest = new L.LatLng(obj.lat, obj.lng, true);
this._northEast = new L.LatLng(obj.lat, obj.lng, true);
} 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._northEast.lat, this._southWest.lng, true);
},
getSouthEast: function () {
return new L.LatLng(this._southWest.lat, this._northEast.lng, true);
},
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();
var latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat),
lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng);
return latIntersects && lngIntersects;
},
toBBoxString: function () {
var sw = this._southWest,
ne = this._northEast;
return [sw.lng, sw.lat, ne.lng, ne.lat].join(',');
},
equals: function (bounds) { // (LatLngBounds)
if (!bounds) { return false; }
bounds = L.latLngBounds(bounds);
return this._southWest.equals(bounds.getSouthWest()) &&
this._northEast.equals(bounds.getNorthEast());
}
});
//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 = {};
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;
// TODO refactor LatLng wrapping
return new L.LatLng(lat, lng, true);
}
};
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, true);
}
};
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);
}
};
L.CRS.EPSG3857 = L.Util.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.Util.extend({}, L.CRS.EPSG3857, {
code: 'EPSG:900913'
});
L.CRS.EPSG4326 = L.Util.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.Util.setOptions(this, options);
this._initContainer(id);
this._initLayout();
this._initHooks();
this._initEvents();
if (options.maxBounds) {
this.setMaxBounds(options.maxBounds);
}
if (options.center && options.zoom !== undefined) {
this.setView(L.latLng(options.center), options.zoom, true);
}
this._initLayers(options.layers);
},
// public methods that modify map state
// replaced by animation-powered implementation in Map.PanAnimation.js
setView: function (center, zoom) {
this._resetView(L.latLng(center), this._limitZoom(zoom));
return this;
},
setZoom: function (zoom) { // (Number)
return this.setView(this.getCenter(), zoom);
},
zoomIn: function () {
return this.setZoom(this._zoom + 1);
},
zoomOut: function () {
return this.setZoom(this._zoom - 1);
},
fitBounds: function (bounds) { // (LatLngBounds)
var zoom = this.getBoundsZoom(bounds);
return this.setView(L.latLngBounds(bounds).getCenter(), zoom);
},
fitWorld: function () {
var sw = new L.LatLng(-60, -170),
ne = new L.LatLng(85, 179);
return this.fitBounds(new L.LatLngBounds(sw, ne));
},
panTo: function (center) { // (LatLng)
return this.setView(center, this._zoom);
},
panBy: function (offset) { // (Point)
// replaced with animated panBy in Map.Animation.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) {
this._boundsMinZoom = null;
return this;
}
var minZoom = this.getBoundsZoom(bounds, true);
this._boundsMinZoom = minZoom;
if (this._loaded) {
if (this._zoom < minZoom) {
this.setView(bounds.getCenter(), minZoom);
} else {
this.panInsideBounds(bounds);
}
}
return this;
},
panInsideBounds: function (bounds) {
bounds = L.latLngBounds(bounds);
var viewBounds = this.getBounds(),
viewSw = this.project(viewBounds.getSouthWest()),
viewNe = this.project(viewBounds.getNorthEast()),
sw = this.project(bounds.getSouthWest()),
ne = this.project(bounds.getNorthEast()),
dx = 0,
dy = 0;
if (viewNe.y < ne.y) { // north
dy = ne.y - viewNe.y;
}
if (viewNe.x > ne.x) { // east
dx = ne.x - viewNe.x;
}
if (viewSw.y > sw.y) { // south
dy = sw.y - viewSw.y;
}
if (viewSw.x < sw.x) { // west
dx = sw.x - viewSw.x;
}
return this.panBy(new L.Point(dx, dy, true));
},
addLayer: function (layer) {
// TODO method is too big, refactor
var id = L.Util.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)) {
this._layersMaxZoom = Math.max(this._layersMaxZoom || 0, layer.options.maxZoom);
}
if (layer.options && !isNaN(layer.options.minZoom)) {
this._layersMinZoom = Math.min(this._layersMinZoom || Infinity, layer.options.minZoom);
}
// TODO looks ugly, refactor!!!
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
this._tileLayersNum++;
this._tileLayersToLoad++;
layer.on('load', this._onTileLayerLoad, this);
}
var onMapLoad = function () {
layer.onAdd(this);
this.fire('layeradd', {layer: layer});
};
if (this._loaded) {
onMapLoad.call(this);
} else {
this.on('load', onMapLoad, this);
}
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
if (!this._layers[id]) { return; }
layer.onRemove(this);
delete this._layers[id];
// 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.fire('layerremove', {layer: layer});
},
hasLayer: function (layer) {
var id = L.Util.stamp(layer);
return this._layers.hasOwnProperty(id);
},
invalidateSize: function () {
var oldSize = this.getSize();
this._sizeChanged = true;
if (this.options.maxBounds) {
this.setMaxBounds(this.options.maxBounds);
}
if (!this._loaded) { return this; }
var offset = oldSize.subtract(this.getSize()).divideBy(2, true);
this._rawPanBy(offset);
this.fire('move');
clearTimeout(this._sizeTimer);
this._sizeTimer = setTimeout(L.Util.bind(this.fire, this, 'moveend'), 200);
return this;
},
// TODO handler.addTo
addHandler: function (name, HandlerClass) {
if (!HandlerClass) { return; }
this[name] = new HandlerClass(this);
if (this.options[name]) {
this[name].enable();
}
return this;
},
// public methods for getting map state
getCenter: function () { // (Boolean) -> LatLng
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 () {
var z1 = this.options.minZoom || 0,
z2 = this._layersMinZoom || 0,
z3 = this._boundsMinZoom || 0;
return Math.max(z1, z2, z3);
},
getMaxZoom: function () {
var z1 = this.options.maxZoom === undefined ? Infinity : this.options.maxZoom,
z2 = this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom;
return Math.min(z1, z2);
},
getBoundsZoom: function (bounds, inside) { // (LatLngBounds, Boolean) -> Number
bounds = L.latLngBounds(bounds);
var size = this.getSize(),
zoom = this.options.minZoom || 0,
maxZoom = this.getMaxZoom(),
ne = bounds.getNorthEast(),
sw = bounds.getSouthWest(),
boundsSize,
nePoint,
swPoint,
zoomNotFound = true;
if (inside) {
zoom--;
}
do {
zoom++;
nePoint = this.project(ne, zoom);
swPoint = this.project(sw, zoom);
boundsSize = new L.Point(Math.abs(nePoint.x - swPoint.x), Math.abs(swPoint.y - nePoint.y));
if (!inside) {
zoomNotFound = boundsSize.x <= size.x && boundsSize.y <= size.y;
} else {
zoomNotFound = boundsSize.x < size.x || boundsSize.y < size.y;
}
} while (zoomNotFound && zoom <= maxZoom);
if (zoomNotFound && inside) {
return null;
}
return inside ? zoom : zoom - 1;
},
getSize: function () {
if (!this._size || this._sizeChanged) {
this._size = new L.Point(
this._container.clientWidth,
this._container.clientHeight);
this._sizeChanged = false;
}
return this._size;
},
getPixelBounds: function () {
var topLeftPoint = this._getTopLeftPoint();
return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize()));
},
getPixelOrigin: function () {
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._initialTopLeftPoint);
return this.unproject(projectedPoint);
},
latLngToLayerPoint: function (latlng) { // (LatLng)
var projectedPoint = this.project(L.latLng(latlng))._round();
return projectedPoint._subtract(this._initialTopLeftPoint);
},
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._leaflet) {
throw new Error("Map container is already initialized.");
}
container._leaflet = true;
},
_initLayout: function () {
var container = this._container;
container.innerHTML = '';
L.DomUtil.addClass(container, 'leaflet-container');
if (L.Browser.touch) {
L.DomUtil.addClass(container, 'leaflet-touch');
}
if (this.options.fadeAnimation) {
L.DomUtil.addClass(container, '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);
this._objectsPane = panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
panes.shadowPane = this._createPane('leaflet-shadow-pane');
panes.overlayPane = this._createPane('leaflet-overlay-pane');
panes.markerPane = this._createPane('leaflet-marker-pane');
panes.popupPane = this._createPane('leaflet-popup-pane');
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._objectsPane);
},
_initializers: [],
_initHooks: function () {
var i, len;
for (i = 0, len = this._initializers.length; i < len; i++) {
this._initializers[i].call(this);
}
},
_initLayers: function (layers) {
layers = layers ? (layers instanceof Array ? layers : [layers]) : [];
this._layers = {};
this._tileLayersNum = 0;
var i, len;
for (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._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;
this.fire('viewreset', {hard: !preserveMapOffset});
this.fire('move');
if (zoomChanged || afterZoomAnim) {
this.fire('zoomend');
}
this.fire('moveend', {hard: !preserveMapOffset});
if (!this._loaded) {
this._loaded = true;
this.fire('load');
}
},
_rawPanBy: function (offset) {
L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset));
},
// map events
_initEvents: function () {
if (!L.DomEvent) { return; }
L.DomEvent.on(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.on(this._container, events[i], this._fireMouseEvent, this);
}
if (this.options.trackResize) {
L.DomEvent.on(window, 'resize', this._onResize, this);
}
},
_onResize: function () {
L.Util.cancelAnimFrame(this._resizeRequest);
this._resizeRequest = L.Util.requestAnimFrame(this.invalidateSize, this, false, this._container);
},
_onMouseClick: function (e) {
if (!this._loaded || (this.dragging && this.dragging.moved())) { return; }
this.fire('preclick');
this._fireMouseEvent(e);
},
_fireMouseEvent: function (e) {
if (!this._loaded) { return; }
var type = e.type;
type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
if (!this.hasEventListeners(type)) { return; }
if (type === 'contextmenu') {
L.DomEvent.preventDefault(e);
}
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 () {
// TODO super-ugly, refactor!!!
// clear scaled tiles after all new tiles are loaded (for performance)
this._tileLayersToLoad--;
if (this._tileLayersNum && !this._tileLayersToLoad && this._tileBg) {
clearTimeout(this._clearTileBgTimer);
this._clearTileBgTimer = setTimeout(L.Util.bind(this._clearTileBg, this), 500);
}
},
// private methods for getting map state
_getMapPanePos: function () {
return L.DomUtil.getPosition(this._mapPane);
},
_getTopLeftPoint: function () {
if (!this._loaded) {
throw new Error('Set map center and zoom first.');
}
return this._initialTopLeftPoint.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);
},
_getCenterLayerPoint: function () {
return this.containerPointToLayerPoint(this.getSize().divideBy(2));
},
_getCenterOffset: function (center) {
return this.latLngToLayerPoint(center).subtract(this._getCenterLayerPoint());
},
_limitZoom: function (zoom) {
var min = this.getMinZoom(),
max = this.getMaxZoom();
return Math.max(min, Math.min(max, zoom));
}
});
L.Map.addInitHook = function (fn) {
var args = Array.prototype.slice.call(arguments, 1);
var init = typeof fn === 'function' ? fn : function () {
this[fn].apply(this, args);
};
this.prototype._initializers.push(init);
};
L.map = function (id, options) {
return new L.Map(id, options);
};
L.Projection.Mercator = {
MAX_LATITUDE: 85.0840591556,
R_MINOR: 6356752.3142,
R_MAJOR: 6378137,
project: function (latlng) { // (LatLng) -> Point
var d = L.LatLng.DEG_TO_RAD,
max = this.MAX_LATITUDE,
lat = Math.max(Math.min(max, latlng.lat), -max),
r = this.R_MAJOR,
r2 = this.R_MINOR,
x = latlng.lng * d * r,
y = lat * d,
tmp = r2 / r,
eccent = Math.sqrt(1.0 - tmp * tmp),
con = eccent * Math.sin(y);
con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
y = -r2 * Math.log(ts);
return new L.Point(x, y);
},
unproject: function (point) { // (Point, Boolean) -> LatLng
var d = L.LatLng.RAD_TO_DEG,
r = this.R_MAJOR,
r2 = this.R_MINOR,
lng = point.x * d / r,
tmp = r2 / r,
eccent = Math.sqrt(1 - (tmp * tmp)),
ts = Math.exp(- point.y / r2),
phi = (Math.PI / 2) - 2 * Math.atan(ts),
numIter = 15,
tol = 1e-7,
i = numIter,
dphi = 0.1,
con;
while ((Math.abs(dphi) > tol) && (--i > 0)) {
con = eccent * Math.sin(phi);
dphi = (Math.PI / 2) - 2 * Math.atan(ts * Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
phi += dphi;
}
return new L.LatLng(phi * d, lng, true);
}
};
L.CRS.EPSG3395 = L.Util.extend({}, L.CRS, {
code: 'EPSG:3395',
projection: L.Projection.Mercator,
transformation: (function () {
var m = L.Projection.Mercator,
r = m.R_MAJOR,
r2 = m.R_MINOR;
return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5);
}())
});
/*
* L.TileLayer is used for standard xyz-numbered tile layers.
*/
L.TileLayer = L.Class.extend({
includes: L.Mixin.Events,
options: {
minZoom: 0,
maxZoom: 18,
tileSize: 256,
subdomains: 'abc',
errorTileUrl: '',
attribution: '',
zoomOffset: 0,
opacity: 1,
/* (undefined works too)
zIndex: null,
tms: false,
continuousWorld: false,
noWrap: false,
zoomReverse: false,
detectRetina: false,
reuseTiles: false,
*/
unloadInvisibleTiles: L.Browser.mobile,
updateWhenIdle: L.Browser.mobile
},
initialize: function (url, options) {
options = L.Util.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--;
}
this._url = url;
var subdomains = this.options.subdomains;
if (typeof subdomains === 'string') {
this.options.subdomains = subdomains.split('');
}
},
onAdd: function (map) {
this._map = map;
// create a container div for tiles
this._initContainer();
// create an image to clone for tiles
this._createTileProto();
// set up events
map.on({
'viewreset': this._resetCallback,
'moveend': this._update
}, 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) {
map._panes.tilePane.removeChild(this._container);
map.off({
'viewreset': this._resetCallback,
'moveend': this._update
}, 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;
},
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._map._panes.tilePane.empty = false;
this._reset(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.getElementsByClassName('leaflet-layer'),
edgeZIndex = -compare(Infinity, -Infinity), // -Ifinity for max, Infinity for min
zIndex;
for (var 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._container.style.zIndex = isFinite(edgeZIndex) ? edgeZIndex + compare(1, -1) : '';
},
_updateOpacity: function () {
L.DomUtil.setOpacity(this._container, this.options.opacity);
// stupid webkit hack to force redrawing of tiles
var i,
tiles = this._tiles;
if (L.Browser.webkit) {
for (i in tiles) {
if (tiles.hasOwnProperty(i)) {
tiles[i].style.webkitTransform += ' translate(0,0)';
}
}
}
},
_initContainer: function () {
var tilePane = this._map._panes.tilePane;
if (!this._container || tilePane.empty) {
this._container = L.DomUtil.create('div', 'leaflet-layer');
this._updateZIndex();
tilePane.appendChild(this._container);
if (this.options.opacity < 1) {
this._updateOpacity();
}
}
},
_resetCallback: function (e) {
this._reset(e.hard);
},
_reset: function (clearOldContainer) {
var key,
tiles = this._tiles;
for (key in tiles) {
if (tiles.hasOwnProperty(key)) {
this.fire('tileunload', {tile: tiles[key]});
}
}
this._tiles = {};
this._tilesToLoad = 0;
if (this.options.reuseTiles) {
this._unusedTiles = [];
}
if (clearOldContainer && this._container) {
this._container.innerHTML = "";
}
this._initContainer();
},
_update: function (e) {
if (this._map._panTransition && this._map._panTransition._inProgress) { return; }
var bounds = this._map.getPixelBounds(),
zoom = this._map.getZoom(),
tileSize = this.options.tileSize;
if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
return;
}
var nwTilePoint = new L.Point(
Math.floor(bounds.min.x / tileSize),
Math.floor(bounds.min.y / tileSize)),
seTilePoint = new L.Point(
Math.floor(bounds.max.x / tileSize),
Math.floor(bounds.max.y / tileSize)),
tileBounds = new L.Bounds(nwTilePoint, seTilePoint);
this._addTilesFromCenterOut(tileBounds);
if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
this._removeOtherTiles(tileBounds);
}
},
_addTilesFromCenterOut: function (bounds) {
var queue = [],
center = bounds.getCenter();
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._container.appendChild(fragment);
},
_tileShouldBeLoaded: function (tilePoint) {
if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) {
return false; // already loaded
}
if (!this.options.continuousWorld) {
var limit = this._getWrapTileNum();
if (this.options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit) ||
tilePoint.y < 0 || tilePoint.y >= limit) {
return false; // exceeds world bounds
}
}
return true;
},
_removeOtherTiles: function (bounds) {
var kArr, x, y, key;
for (key in this._tiles) {
if (this._tiles.hasOwnProperty(key)) {
kArr = key.split(':');
x = parseInt(kArr[0], 10);
y = parseInt(kArr[1], 10);
// remove tile if it's out of bounds
if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
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._container) {
this._container.removeChild(tile);
}
if (!L.Browser.android) { //For https://github.com/CloudMade/Leaflet/issues/137
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), Safari 5.1.7, iOS 5.1.1,
// android browser (4.0) have 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._container) {
container.appendChild(tile);
}
},
_getZoomForUrl: function () {
var options = this.options,
zoom = this._map.getZoom();
if (options.zoomReverse) {
zoom = options.maxZoom - zoom;
}
return zoom + options.zoomOffset;
},
_getTilePos: function (tilePoint) {
var origin = this._map.getPixelOrigin(),
tileSize = this.options.tileSize;
return tilePoint.multiplyBy(tileSize).subtract(origin);
},
// image-specific code (override to implement e.g. Canvas or SVG tile layer)
getTileUrl: function (tilePoint) {
this._adjustTilePoint(tilePoint);
return L.Util.template(this._url, L.Util.extend({
s: this._getSubdomain(tilePoint),
z: this._getZoomForUrl(),
x: tilePoint.x,
y: tilePoint.y
}, this.options));
},
_getWrapTileNum: function () {
// TODO refactor, limit is not valid for non-standard projections
return Math.pow(2, this._getZoomForUrl());
},
_adjustTilePoint: function (tilePoint) {
var limit = this._getWrapTileNum();
// wrap tile coordinates
if (!this.options.continuousWorld && !this.options.noWrap) {
tilePoint.x = ((tilePoint.x % limit) + limit) % limit;
}
if (this.options.tms) {
tilePoint.y = limit - tilePoint.y - 1;
}
},
_getSubdomain: function (tilePoint) {
var index = (tilePoint.x + tilePoint.y) % this.options.subdomains.length;
return this.options.subdomains[index];
},
_createTileProto: function () {
var img = this._tileImg = L.DomUtil.create('img', 'leaflet-tile');
img.galleryimg = 'no';
var tileSize = this.options.tileSize;
img.style.width = tileSize + 'px';
img.style.height = tileSize + 'px';
},
_getTile: function () {
if (this.options.reuseTiles && this._unusedTiles.length > 0) {
var tile = this._unusedTiles.pop();
this._resetTile(tile);
return tile;
}
return this._createTile();
},
_resetTile: function (tile) {
// Override if data stored on a tile needs to be cleaned up before reuse
},
_createTile: function () {
var tile = this._tileImg.cloneNode(false);
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
return tile;
},
_loadTile: function (tile, tilePoint) {
tile._layer = this;
tile.onload = this._tileOnLoad;
tile.onerror = this._tileOnError;
tile.src = this.getTileUrl(tilePoint);
},
_tileLoaded: function () {
this._tilesToLoad--;
if (!this._tilesToLoad) {
this.fire('load');
}
},
_tileOnLoad: function (e) {
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 (e) {
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 = 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.Util.extend({}, this.defaultWmsParams);
if (options.detectRetina && L.Browser.retina) {
wmsParams.width = wmsParams.height = this.options.tileSize * 2;
} else {
wmsParams.width = wmsParams.height = this.options.tileSize;
}
for (var i in options) {
// all keys that are not TileLayer options go to WMS params
if (!this.options.hasOwnProperty(i)) {
wmsParams[i] = options[i];
}
}
this.wmsParams = wmsParams;
L.Util.setOptions(this, options);
},
onAdd: function (map) {
var projectionKey = parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs';
this.wmsParams[projectionKey] = map.options.crs.code;
L.TileLayer.prototype.onAdd.call(this, map);
},
getTileUrl: function (tilePoint, zoom) { // (Point, Number) -> String
var map = this._map,
crs = map.options.crs,
tileSize = this.options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)),
nw = crs.project(map.unproject(nwPoint, zoom)),
se = crs.project(map.unproject(sePoint, zoom)),
bbox = [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) + "&bbox=" + bbox;
},
setParams: function (params, noRedraw) {
L.Util.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 = L.TileLayer.extend({
options: {
async: false
},
initialize: function (options) {
L.Util.setOptions(this, options);
},
redraw: function () {
var i,
tiles = this._tiles;
for (i in tiles) {
if (tiles.hasOwnProperty(i)) {
this._redrawTile(tiles[i]);
}
}
},
_redrawTile: function (tile) {
this.drawTile(tile, tile._tilePoint, tile._zoom);
},
_createTileProto: function () {
var proto = this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile');
var tileSize = this.options.tileSize;
proto.width = tileSize;
proto.height = tileSize;
},
_createTile: function () {
var tile = this._canvasProto.cloneNode(false);
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
return tile;
},
_loadTile: function (tile, tilePoint, zoom) {
tile._layer = this;
tile._tilePoint = tilePoint;
tile._zoom = zoom;
this.drawTile(tile, tilePoint, zoom);
if (!this.options.async) {
this.tileDrawn(tile);
}
},
drawTile: function (tile, tilePoint, zoom) {
// override with rendering code
},
tileDrawn: function (tile) {
this._tileOnLoad.call(tile);
}
});
L.tileLayer.canvas = function (options) {
return new L.TileLayer.Canvas(options);
};
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.Util.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;
},
_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.Util.extend(this._image, {
galleryimg: 'no',
onselectstart: L.Util.falseFn,
onmousemove: L.Util.falseFn,
onload: L.Util.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),
currentSize = map.latLngToLayerPoint(se).subtract(map.latLngToLayerPoint(nw)),
origin = topLeft.add(size.subtract(currentSize).divideBy(2));
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 = L.Class.extend({
options: {
/*
iconUrl: (String) (required)
iconSize: (Point) (can be set through CSS)
iconAnchor: (Point) (centered by default if size is specified, can be set in CSS with negative margins)
popupAnchor: (Point) (if not specified, popup opens in the anchor point)
shadowUrl: (Point) (no shadow by default)
shadowSize: (Point)
shadowAnchor: (Point)
*/
className: ''
},
initialize: function (options) {
L.Util.setOptions(this, options);
},
createIcon: function () {
return this._createIcon('icon');
},
createShadow: function () {
return this._createIcon('shadow');
},
_createIcon: function (name) {
var src = this._getIconUrl(name);
if (!src) {
if (name === 'icon') {
throw new Error("iconUrl not set in Icon options (see the docs).");
}
return null;
}
var img = this._createImg(src);
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) {
var el;
if (!L.Browser.ie6) {
el = document.createElement('img');
el.src = src;
} else {
el = document.createElement('div');
el.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")';
}
return el;
},
_getIconUrl: function (name) {
return this.options[name + 'Url'];
}
});
L.icon = function (options) {
return new L.Icon(options);
};
L.Icon.Default = L.Icon.extend({
options: {
iconSize: new L.Point(25, 41),
iconAnchor: new L.Point(13, 41),
popupAnchor: new L.Point(1, -34),
shadowSize: new L.Point(41, 41)
},
_getIconUrl: function (name) {
var key = name + 'Url';
if (this.options[key]) {
return this.options[key];
}
var path = L.Icon.Default.imagePath;
if (!path) {
throw new Error("Couldn't autodetect L.Icon.Default.imagePath, set it manually.");
}
return path + '/marker-' + name + '.png';
}
});
L.Icon.Default.imagePath = (function () {
var scripts = document.getElementsByTagName('script'),
leafletRe = /\/?leaflet[\-\._]?([\w\-\._]*)\.js\??/;
var i, len, src, matches;
for (i = 0, len = scripts.length; i < len; i++) {
src = scripts[i].src;
matches = src.match(leafletRe);
if (matches) {
return src.split(leafletRe)[0] + '/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: '',
clickable: true,
draggable: false,
zIndexOffset: 0,
opacity: 1
},
initialize: function (latlng, options) {
L.Util.setOptions(this, options);
this._latlng = L.latLng(latlng);
},
onAdd: function (map) {
this._map = map;
map.on('viewreset', this.update, this);
this._initIcon();
this.update();
if (map.options.zoomAnimation && map.options.markerZoomAnimation) {
map.on('zoomanim', this._animateZoom, this);
}
},
addTo: function (map) {
map.addLayer(this);
return this;
},
onRemove: function (map) {
this._removeIcon();
// TODO move to Marker.Popup.js
if (this.closePopup) {
this.closePopup();
}
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();
if (this._popup) {
this._popup.setLatLng(latlng);
}
},
setZIndexOffset: function (offset) {
this.options.zIndexOffset = offset;
this.update();
},
setIcon: function (icon) {
if (this._map) {
this._removeIcon();
}
this.options.icon = icon;
if (this._map) {
this._initIcon();
this.update();
}
},
update: function () {
if (!this._icon) { return; }
var pos = this._map.latLngToLayerPoint(this._latlng).round();
this._setPos(pos);
},
_initIcon: function () {
var options = this.options,
map = this._map,
animation = (map.options.zoomAnimation && map.options.markerZoomAnimation),
classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide',
needOpacityUpdate = false;
if (!this._icon) {
this._icon = options.icon.createIcon();
if (options.title) {
this._icon.title = options.title;
}
this._initInteraction();
needOpacityUpdate = (this.options.opacity < 1);
L.DomUtil.addClass(this._icon, classToAdd);
}
if (!this._shadow) {
this._shadow = options.icon.createShadow();
if (this._shadow) {
L.DomUtil.addClass(this._shadow, classToAdd);
needOpacityUpdate = (this.options.opacity < 1);
}
}
if (needOpacityUpdate) {
this._updateOpacity();
}
var panes = this._map._panes;
panes.markerPane.appendChild(this._icon);
if (this._shadow) {
panes.shadowPane.appendChild(this._shadow);
}
},
_removeIcon: function () {
var panes = this._map._panes;
panes.markerPane.removeChild(this._icon);
if (this._shadow) {
panes.shadowPane.removeChild(this._shadow);
}
this._icon = this._shadow = null;
},
_setPos: function (pos) {
L.DomUtil.setPosition(this._icon, pos);
if (this._shadow) {
L.DomUtil.setPosition(this._shadow, pos);
}
this._icon.style.zIndex = pos.y + this.options.zIndexOffset;
},
_animateZoom: function (opt) {
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center);
this._setPos(pos);
},
_initInteraction: function () {
if (!this.options.clickable) {
return;
}
var icon = this._icon,
events = ['dblclick', 'mousedown', 'mouseover', 'mouseout'];
L.DomUtil.addClass(icon, 'leaflet-clickable');
L.DomEvent.on(icon, 'click', this._onMouseClick, 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) {
L.DomEvent.stopPropagation(e);
if (this.dragging && this.dragging.moved()) { return; }
if (this._map.dragging && this._map.dragging.moved()) { return; }
this.fire(e.type, {
originalEvent: e
});
},
_fireMouseEvent: function (e) {
this.fire(e.type, {
originalEvent: e
});
if (e.type !== 'mousedown') {
L.DomEvent.stopPropagation(e);
}
},
setOpacity: function (opacity) {
this.options.opacity = opacity;
if (this._map) {
this._updateOpacity();
}
},
_updateOpacity: function () {
L.DomUtil.setOpacity(this._icon, this.options.opacity);
if (this._shadow) {
L.DomUtil.setOpacity(this._shadow, this.options.opacity);
}
}
});
L.marker = function (latlng, options) {
return new L.Marker(latlng, options);
};
L.DivIcon = L.Icon.extend({
options: {
iconSize: new L.Point(12, 12), // also can be set through CSS
/*
iconAnchor: (Point)
popupAnchor: (Point)
html: (String)
bgPos: (Point)
*/
className: 'leaflet-div-icon'
},
createIcon: function () {
var div = document.createElement('div'),
options = this.options;
if (options.html) {
div.innerHTML = options.html;
}
if (options.bgPos) {
div.style.backgroundPosition =
(-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px';
}
this._setIconStyles(div, 'icon');
return div;
},
createShadow: function () {
return null;
}
});
L.divIcon = function (options) {
return new L.DivIcon(options);
};
L.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: new L.Point(0, 6),
autoPanPadding: new L.Point(5, 5),
className: ''
},
initialize: function (options, source) {
L.Util.setOptions(this, options);
this._source = source;
},
onAdd: function (map) {
this._map = map;
if (!this._container) {
this._initLayout();
}
this._updateContent();
var animFade = map.options.fadeAnimation;
if (animFade) {
L.DomUtil.setOpacity(this._container, 0);
}
map._panes.popupPane.appendChild(this._container);
map.on('viewreset', this._updatePosition, this);
if (L.Browser.any3d) {
map.on('zoomanim', this._zoomAnimation, this);
}
if (map.options.closePopupOnClick) {
map.on('preclick', this._close, this);
}
this._update();
if (animFade) {
L.DomUtil.setOpacity(this._container, 1);
}
},
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({
viewreset: this._updatePosition,
preclick: this._close,
zoomanim: this._zoomAnimation
}, this);
if (map.options.fadeAnimation) {
L.DomUtil.setOpacity(this._container, 0);
}
this._map = null;
},
setLatLng: function (latlng) {
this._latlng = L.latLng(latlng);
this._update();
return this;
},
setContent: function (content) {
this._content = content;
this._update();
return this;
},
_close: function () {
var map = this._map;
if (map) {
map._popup = null;
map
.removeLayer(this)
.fire('popupclose', {popup: this});
}
},
_initLayout: function () {
var prefix = 'leaflet-popup',
container = this._container = L.DomUtil.create('div', prefix + ' ' + this.options.className + ' leaflet-zoom-animated'),
closeButton;
if (this.options.closeButton) {
closeButton = this._closeButton = L.DomUtil.create('a', prefix + '-close-button', container);
closeButton.href = '#close';
closeButton.innerHTML = '×';
L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this);
}
var wrapper = this._wrapper = L.DomUtil.create('div', prefix + '-content-wrapper', container);
L.DomEvent.disableClickPropagation(wrapper);
this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper);
L.DomEvent.on(this._contentNode, 'mousewheel', L.DomEvent.stopPropagation);
this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container);
this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer);
},
_update: function () {
if (!this._map) { return; }
this._container.style.visibility = 'hidden';
this._updateContent();
this._updateLayout();
this._updatePosition();
this._container.style.visibility = '';
this._adjustPan();
},
_updateContent: function () {
if (!this._content) { return; }
if (typeof this._content === 'string') {
this._contentNode.innerHTML = this._content;
} else {
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 () {
var pos = this._map.latLngToLayerPoint(this._latlng),
is3d = L.Browser.any3d,
offset = this.options.offset;
if (is3d) {
L.DomUtil.setPosition(this._container, pos);
}
this._containerBottom = -offset.y - (is3d ? 0 : pos.y);
this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (is3d ? 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 (L.Browser.any3d) {
layerPos._add(L.DomUtil.getPosition(this._container));
}
var containerPos = map.layerPointToContainerPoint(layerPos),
padding = this.options.autoPanPadding,
size = map.getSize(),
dx = 0,
dy = 0;
if (containerPos.x < 0) {
dx = containerPos.x - padding.x;
}
if (containerPos.x + containerWidth > size.x) {
dx = containerPos.x + containerWidth - size.x + padding.x;
}
if (containerPos.y < 0) {
dy = containerPos.y - padding.y;
}
if (containerPos.y + containerHeight > size.y) {
dy = containerPos.y + containerHeight - size.y + padding.y;
}
if (dx || dy) {
map.panBy(new L.Point(dx, dy));
}
},
_onCloseButtonClick: function (e) {
this._close();
L.DomEvent.stop(e);
}
});
L.popup = function (options, source) {
return new L.Popup(options, source);
};
/*
* Popup extension to L.Marker, adding openPopup & bindPopup methods.
*/
L.Marker.include({
openPopup: function () {
if (this._popup && this._map) {
this._popup.setLatLng(this._latlng);
this._map.openPopup(this._popup);
}
return this;
},
closePopup: function () {
if (this._popup) {
this._popup._close();
}
return this;
},
bindPopup: function (content, options) {
var anchor = L.point(this.options.icon.options.popupAnchor) || new L.Point(0, 0);
anchor = anchor.add(L.Popup.prototype.options.offset);
if (options && options.offset) {
anchor = anchor.add(options.offset);
}
options = L.Util.extend({offset: anchor}, options);
if (!this._popup) {
this.on('click', this.openPopup, this);
}
this._popup = new L.Popup(options, this)
.setContent(content);
return this;
},
unbindPopup: function () {
if (this._popup) {
this._popup = null;
this.off('click', this.openPopup);
}
return this;
}
});
L.Map.include({
openPopup: function (popup) {
this.closePopup();
this._popup = popup;
return this
.addLayer(popup)
.fire('popupopen', {popup: this._popup});
},
closePopup: function () {
if (this._popup) {
this._popup._close();
}
return this;
}
});
/*
* L.LayerGroup is a class to combine several layers so you can manipulate the group (e.g. add/remove it) as one layer.
*/
L.LayerGroup = L.Class.extend({
initialize: function (layers) {
this._layers = {};
var i, len;
if (layers) {
for (i = 0, len = layers.length; i < len; i++) {
this.addLayer(layers[i]);
}
}
},
addLayer: function (layer) {
var id = L.Util.stamp(layer);
this._layers[id] = layer;
if (this._map) {
this._map.addLayer(layer);
}
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
delete this._layers[id];
if (this._map) {
this._map.removeLayer(layer);
}
return this;
},
clearLayers: function () {
this.eachLayer(this.removeLayer, this);
return this;
},
invoke: function (methodName) {
var args = Array.prototype.slice.call(arguments, 1),
i, layer;
for (i in this._layers) {
if (this._layers.hasOwnProperty(i)) {
layer = this._layers[i];
if (layer[methodName]) {
layer[methodName].apply(layer, args);
}
}
}
return this;
},
onAdd: function (map) {
this._map = map;
this.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) {
if (this._layers.hasOwnProperty(i)) {
method.call(context, this._layers[i]);
}
}
}
});
L.layerGroup = function (layers) {
return new L.LayerGroup(layers);
};
/*
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and bindPopup method shared between a group of layers.
*/
L.FeatureGroup = L.LayerGroup.extend({
includes: L.Mixin.Events,
addLayer: function (layer) {
if (this._layers[L.Util.stamp(layer)]) {
return this;
}
layer.on('click dblclick mouseover mouseout mousemove contextmenu', this._propagateEvent, this);
L.LayerGroup.prototype.addLayer.call(this, layer);
if (this._popupContent && layer.bindPopup) {
layer.bindPopup(this._popupContent);
}
return this;
},
removeLayer: function (layer) {
layer.off('click dblclick mouseover mouseout mousemove contextmenu', this._propagateEvent, this);
L.LayerGroup.prototype.removeLayer.call(this, layer);
return this.invoke('unbindPopup');
},
bindPopup: function (content) {
this._popupContent = content;
return this.invoke('bindPopup', content);
},
setStyle: function (style) {
return this.invoke('setStyle', style);
},
getBounds: function () {
var bounds = new L.LatLngBounds();
this.eachLayer(function (layer) {
bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds());
}, this);
return bounds;
},
_propagateEvent: function (e) {
e.layer = e.target;
e.target = this;
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. It's inherited by Polyline, Circle, etc.
*/
L.Path = L.Class.extend({
includes: [L.Mixin.Events],
statics: {
// how much to extend the clip area around the map view
// (relative to its size, e.g. 0.5 is half the screen in each direction)
// set in such way that SVG element doesn't exceed 1280px (vector layers flicker on dragend if it is)
CLIP_PADDING: L.Browser.mobile ?
Math.max(0, Math.min(0.5,
(1280 / Math.max(window.innerWidth, window.innerHeight) - 1) / 2))
: 0.5
},
options: {
stroke: true,
color: '#0033ff',
dashArray: null,
weight: 5,
opacity: 0.5,
fill: false,
fillColor: null, //same as color by default
fillOpacity: 0.2,
clickable: true
},
initialize: function (options) {
L.Util.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);
}
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);
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.Util.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)),
max = min.add(size.multiplyBy(1 + p * 2));
this._pathViewport = new L.Bounds(min, max);
}
});
L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
L.Path = L.Path.extend({
statics: {
SVG: L.Browser.svg
},
bringToFront: function () {
if (this._container) {
this._map._pathRoot.appendChild(this._container);
}
},
bringToBack: function () {
if (this._container) {
var root = this._map._pathRoot;
root.insertBefore(this._container, root.firstChild);
}
},
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');
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');
}
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');
}
} 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) {
this._path.setAttribute('class', '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);
L.DomEvent.stopPropagation(e);
},
_fireMouseEvent: function (e) {
if (!this.hasEventListeners(e.type)) {
return;
}
if (e.type === 'contextmenu') {
L.DomEvent.preventDefault(e);
}
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
});
}
});
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) {
this._pathRoot.setAttribute('class', ' leaflet-zoom-animated');
this.on({
'zoomanim': this._animatePathZoom,
'zoomend': this._endPathZoom
});
} else {
this._pathRoot.setAttribute('class', ' leaflet-zoom-hide');
}
this.on('moveend', this._updateSvgViewport);
this._updateSvgViewport();
}
},
_animatePathZoom: function (opt) {
var scale = this.getZoomScale(opt.zoom),
offset = this._getCenterOffset(opt.center).divideBy(1 - 1 / scale),
viewportPos = this.containerPointToLayerPoint(this.getSize().multiplyBy(-L.Path.CLIP_PADDING)),
origin = viewportPos.add(offset).round();
this._pathRoot.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString((origin.multiplyBy(-1).add(L.DomUtil.getPosition(this._pathRoot)).multiplyBy(scale).add(origin))) + ' 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 bindPopup method.
*/
L.Path.include({
bindPopup: function (content, options) {
if (!this._popup || this._popup.options !== options) {
this._popup = new L.Popup(options, this);
}
this._popup.setContent(content);
if (!this._openPopupAdded) {
this.on('click', this._openPopup, this);
this._openPopupAdded = true;
}
return this;
},
openPopup: function (latlng) {
if (this._popup) {
latlng = latlng || this._latlng ||
this._latlngs[Math.floor(this._latlngs.length / 2)];
this._openPopup({latlng: latlng});
}
return this;
},
_openPopup: function (e) {
this._popup.setLatLng(e.latlng);
this._map.openPopup(this._popup);
}
});
/*
* Vector rendering for IE6-8 through VML.
* Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
*/
L.Browser.vml = (function () {
try {
var div = document.createElement('div');
div.innerHTML = '';
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('');
};
} 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');
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 = options.dashArray.replace(/ *, */g, ' ');
} else {
stroke.dashStyle = '';
}
} 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.Util.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);
this._requestUpdate();
this._map = null;
},
_requestUpdate: function () {
if (this._map) {
L.Util.cancelAnimFrame(this._fireMapMoveEnd);
this._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map);
}
},
_fireMapMoveEnd: function () {
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) {
if (options.fillOpacity < 1) {
ctx.globalAlpha = options.fillOpacity;
}
ctx.fill();
}
if (options.stroke) {
if (options.opacity < 1) {
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 hand cursor
// TODO mouseover, mouseout, dblclick
this._map.on('click', this._onClick, this);
}
},
_onClick: function (e) {
if (this._containsPoint(e.layerPoint)) {
this.fire('click', e);
}
}
});
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 () {
if (this._pathZooming) {
//Don't redraw while zooming. See _updateSvgViewport for more details
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.)
*/
L.LineUtil = {
// Simplify polyline with vertex reduction and Douglas-Peucker simplification.
// Improves rendering performance dramatically by lessening the number of points to draw.
simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
if (!tolerance || !points.length) {
return points.slice();
}
var sqTolerance = tolerance * tolerance;
// stage 1: vertex reduction
points = this._reducePoints(points, sqTolerance);
// stage 2: Douglas-Peucker simplification
points = this._simplifyDP(points, sqTolerance);
return points;
},
// distance from a point to a segment between two points
pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
},
closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return this._sqClosestPointOnSegment(p, p1, p2);
},
// Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
_simplifyDP: function (points, sqTolerance) {
var len = points.length,
ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array,
markers = new ArrayConstructor(len);
markers[0] = markers[len - 1] = 1;
this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
var i,
newPoints = [];
for (i = 0; i < len; i++) {
if (markers[i]) {
newPoints.push(points[i]);
}
}
return newPoints;
},
_simplifyDPStep: function (points, markers, sqTolerance, first, last) {
var maxSqDist = 0,
index, i, sqDist;
for (i = first + 1; i <= last - 1; i++) {
sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
if (sqDist > maxSqDist) {
index = i;
maxSqDist = sqDist;
}
}
if (maxSqDist > sqTolerance) {
markers[index] = 1;
this._simplifyDPStep(points, markers, sqTolerance, first, index);
this._simplifyDPStep(points, markers, sqTolerance, index, last);
}
},
// reduce points that are too close to each other to a single point
_reducePoints: function (points, sqTolerance) {
var reducedPoints = [points[0]];
for (var i = 1, prev = 0, len = points.length; i < len; i++) {
if (this._sqDist(points[i], points[prev]) > sqTolerance) {
reducedPoints.push(points[i]);
prev = i;
}
}
if (prev < len - 1) {
reducedPoints.push(points[len - 1]);
}
return reducedPoints;
},
/*jshint bitwise:false */ // temporarily allow bitwise oprations
// Cohen-Sutherland line clipping algorithm.
// Used to avoid rendering parts of a polyline that are not currently visible.
clipSegment: function (a, b, bounds, useLastCode) {
var min = bounds.min,
max = bounds.max;
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
codeB = this._getBitCode(b, bounds);
// save 2nd code to avoid calculating it on the next segment
this._lastCode = codeB;
while (true) {
// if a,b is inside the clip window (trivial accept)
if (!(codeA | codeB)) {
return [a, b];
// if a,b is outside the clip window (trivial reject)
} else if (codeA & codeB) {
return false;
// other cases
} else {
var codeOut = codeA || codeB,
p = this._getEdgeIntersection(a, b, codeOut, bounds),
newCode = this._getBitCode(p, bounds);
if (codeOut === codeA) {
a = p;
codeA = newCode;
} else {
b = p;
codeB = newCode;
}
}
}
},
_getEdgeIntersection: function (a, b, code, bounds) {
var dx = b.x - a.x,
dy = b.y - a.y,
min = bounds.min,
max = bounds.max;
if (code & 8) { // top
return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
} else if (code & 4) { // bottom
return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
} else if (code & 2) { // right
return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
} else if (code & 1) { // left
return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
}
},
_getBitCode: function (/*Point*/ p, bounds) {
var code = 0;
if (p.x < bounds.min.x) { // left
code |= 1;
} else if (p.x > bounds.max.x) { // right
code |= 2;
}
if (p.y < bounds.min.y) { // bottom
code |= 4;
} else if (p.y > bounds.max.y) { // top
code |= 8;
}
return code;
},
/*jshint bitwise:true */
// square distance (to avoid unnecessary Math.sqrt calls)
_sqDist: function (p1, p2) {
var dx = p2.x - p1.x,
dy = p2.y - p1.y;
return dx * dx + dy * dy;
},
// return closest point on segment or distance to that point
_sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
var x = p1.x,
y = p1.y,
dx = p2.x - x,
dy = p2.y - y,
dot = dx * dx + dy * dy,
t;
if (dot > 0) {
t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
if (t > 1) {
x = p2.x;
y = p2.y;
} else if (t > 0) {
x += dx * t;
y += dy * t;
}
}
dx = p.x - x;
dy = p.y - y;
return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
}
};
L.Polyline = L.Path.extend({
initialize: function (latlngs, options) {
L.Path.prototype.initialize.call(this, options);
this._latlngs = this._convertLatLngs(latlngs);
// TODO refactor: move to Polyline.Edit.js
if (L.Handler.PolyEdit) {
this.editing = new L.Handler.PolyEdit(this);
if (this.options.editable) {
this.editing.enable();
}
}
},
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 (index, howMany) {
var removed = [].splice.apply(this._latlngs, arguments);
this._convertLatLngs(this._latlngs);
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 () {
var b = new L.LatLngBounds();
var latLngs = this.getLatLngs();
for (var i = 0, len = latLngs.length; i < len; i++) {
b.extend(latLngs[i]);
}
return b;
},
// TODO refactor: move to Polyline.Edit.js
onAdd: function (map) {
L.Path.prototype.onAdd.call(this, map);
if (this.editing && this.editing.enabled()) {
this.editing.addHooks();
}
},
onRemove: function (map) {
if (this.editing && this.editing.enabled()) {
this.editing.removeHooks();
}
L.Path.prototype.onRemove.call(this, map);
},
_convertLatLngs: function (latlngs) {
var i, len;
for (i = 0, len = latlngs.length; i < len; i++) {
if (latlngs[i] instanceof Array && typeof latlngs[i][0] !== 'number') {
return;
}
latlngs[i] = L.latLng(latlngs[i]);
}
return latlngs;
},
_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 utilify functions for polygons (clipping, etc.).
*/
/*jshint bitwise:false */ // allow bitwise oprations here
L.PolyUtil = {};
/*
* Sutherland-Hodgeman polygon clipping algorithm.
* Used to avoid rendering parts of a polygon that are not currently visible.
*/
L.PolyUtil.clipPolygon = function (points, bounds) {
var min = bounds.min,
max = bounds.max,
clippedPoints,
edges = [1, 4, 2, 8],
i, j, k,
a, b,
len, edge, p,
lu = L.LineUtil;
for (i = 0, len = points.length; i < len; i++) {
points[i]._code = lu._getBitCode(points[i], bounds);
}
// for each edge (left, bottom, right, top)
for (k = 0; k < 4; k++) {
edge = edges[k];
clippedPoints = [];
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
a = points[i];
b = points[j];
// if a is inside the clip window
if (!(a._code & edge)) {
// if b is outside the clip window (a->b goes out of screen)
if (b._code & edge) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
clippedPoints.push(a);
// else if b is inside the clip window (a->b enters the screen)
} else if (!(b._code & edge)) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
}
points = clippedPoints;
}
return points;
};
/*jshint bitwise:true */
/*
* L.Polygon is used to display polygons on a map.
*/
L.Polygon = L.Polyline.extend({
options: {
fill: true
},
initialize: function (latlngs, options) {
L.Polyline.prototype.initialize.call(this, latlngs, options);
if (latlngs && (latlngs[0] instanceof Array) && (typeof latlngs[0][0] !== 'number')) {
this._latlngs = this._convertLatLngs(latlngs[0]);
this._holes = latlngs.slice(1);
}
},
projectLatlngs: function () {
L.Polyline.prototype.projectLatlngs.call(this);
// project polygon holes points
// TODO move this logic to Polyline to get rid of duplication
this._holePoints = [];
if (!this._holes) {
return;
}
for (var i = 0, len = this._holes.length, hole; i < len; i++) {
this._holePoints[i] = [];
for (var j = 0, len2 = this._holes[i].length; j < len2; j++) {
this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
}
}
},
_clipPoints: function () {
var points = this._originalPoints,
newParts = [];
this._parts = [points].concat(this._holePoints);
if (this.options.noClip) {
return;
}
for (var i = 0, len = this._parts.length; i < len; i++) {
var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
if (!clipped.length) {
continue;
}
newParts.push(clipped);
}
this._parts = newParts;
},
_getPathPartStr: function (points) {
var str = L.Polyline.prototype._getPathPartStr.call(this, points);
return str + (L.Browser.svg ? 'z' : 'x');
}
});
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;
}
});
}
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
*/
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(),
latLngBounds.getSouthWest()
];
}
});
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(),
latlng2 = new L.LatLng(this._latlng.lat, this._latlng.lng - lngRadius, true),
point2 = this._map.latLngToLayerPoint(latlng2);
this._point = this._map.latLngToLayerPoint(this._latlng);
this._radius = Math.max(Math.round(this._point.x - point2.x), 1);
},
getBounds: function () {
var map = this._map,
delta = this._radius * Math.cos(Math.PI / 4),
point = map.project(this._latlng),
swPoint = new L.Point(point.x - delta, point.y + delta),
nePoint = new L.Point(point.x + delta, point.y - delta),
sw = map.unproject(swPoint),
ne = map.unproject(nePoint);
return new L.LatLngBounds(sw, ne);
},
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;
},
_getLngRadius: function () {
var equatorLength = 40075017,
hLength = equatorLength * Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
return (this._mRadius / hLength) * 360;
},
_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);
},
setRadius: function (radius) {
this._radius = radius;
return this.redraw();
}
});
L.circleMarker = function (latlng, options) {
return new L.CircleMarker(latlng, options);
};
L.Polyline.include(!L.Path.CANVAS ? {} : {
_containsPoint: function (p, closed) {
var i, j, k, len, len2, dist, part,
w = this.options.weight / 2;
if (L.Browser.touch) {
w += 10; // polyline click tolerance on touch devices
}
for (i = 0, len = this._parts.length; i < len; i++) {
part = this._parts[i];
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
if (!closed && (j === 0)) {
continue;
}
dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
if (dist <= w) {
return true;
}
}
}
return false;
}
});
L.Polygon.include(!L.Path.CANVAS ? {} : {
_containsPoint: function (p) {
var inside = false,
part, p1, p2,
i, j, k,
len, len2;
// TODO optimization: check if within bounds first
if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
// click on polygon border
return true;
}
// ray casting algorithm for detecting if point is in polygon
for (i = 0, len = this._parts.length; i < len; i++) {
part = this._parts[i];
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
p1 = part[j];
p2 = part[k];
if (((p1.y > p.y) !== (p2.y > p.y)) &&
(p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
inside = !inside;
}
}
}
return inside;
}
});
/*
* Circle canvas specific drawing parts.
*/
L.Circle.include(!L.Path.CANVAS ? {} : {
_drawPath: function () {
var p = this._point;
this._ctx.beginPath();
this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false);
},
_containsPoint: function (p) {
var center = this._point,
w2 = this.options.stroke ? this.options.weight / 2 : 0;
return (p.distanceTo(center) <= this._radius + w2);
}
});
L.GeoJSON = L.FeatureGroup.extend({
initialize: function (geojson, options) {
L.Util.setOptions(this, options);
this._layers = {};
if (geojson) {
this.addData(geojson);
}
},
addData: function (geojson) {
var features = geojson instanceof Array ? geojson : geojson.features,
i, len;
if (features) {
for (i = 0, len = features.length; i < len; i++) {
this.addData(features[i]);
}
return this;
}
var options = this.options,
style = options.style;
if (options.filter && !options.filter(geojson)) { return; }
var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer);
if (style) {
if (typeof style === 'function') {
style = style(geojson);
}
if (layer.setStyle) {
layer.setStyle(style);
}
}
if (options.onEachFeature) {
options.onEachFeature(geojson, layer);
}
return this.addLayer(layer);
}
});
L.Util.extend(L.GeoJSON, {
geometryToLayer: function (geojson, pointToLayer) {
var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson,
coords = geometry.coordinates,
layers = [],
latlng, latlngs, i, len, layer;
switch (geometry.type) {
case 'Point':
latlng = this.coordsToLatLng(coords);
return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
case 'MultiPoint':
for (i = 0, len = coords.length; i < len; i++) {
latlng = this.coordsToLatLng(coords[i]);
layer = pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng);
layers.push(layer);
}
return new L.FeatureGroup(layers);
case 'LineString':
latlngs = this.coordsToLatLngs(coords);
return new L.Polyline(latlngs);
case 'Polygon':
latlngs = this.coordsToLatLngs(coords, 1);
return new L.Polygon(latlngs);
case 'MultiLineString':
latlngs = this.coordsToLatLngs(coords, 1);
return new L.MultiPolyline(latlngs);
case "MultiPolygon":
latlngs = this.coordsToLatLngs(coords, 2);
return new L.MultiPolygon(latlngs);
case "GeometryCollection":
for (i = 0, len = geometry.geometries.length; i < len; i++) {
layer = this.geometryToLayer(geometry.geometries[i], pointToLayer);
layers.push(layer);
}
return new L.FeatureGroup(layers);
default:
throw new Error('Invalid GeoJSON object.');
}
},
coordsToLatLng: function (coords, reverse) { // (Array, Boolean) -> LatLng
var lat = parseFloat(coords[reverse ? 0 : 1]),
lng = parseFloat(coords[reverse ? 1 : 0]);
return new L.LatLng(lat, lng, true);
},
coordsToLatLngs: function (coords, levelsDeep, reverse) { // (Array, Number, Boolean) -> Array
var latlng,
latlngs = [],
i, len;
for (i = 0, len = coords.length; i < len; i++) {
latlng = levelsDeep ?
this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) :
this.coordsToLatLng(coords[i], reverse);
latlngs.push(latlng);
}
return latlngs;
}
});
L.geoJson = function (geojson, options) {
return new L.GeoJSON(geojson, options);
};
/*
* L.DomEvent contains functions for working with DOM events.
*/
L.DomEvent = {
/* inpired by John Resig, Dean Edwards and YUI addEvent implementations */
addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
var id = L.Util.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.touch && (type === 'dblclick') && this.addDoubleTapListener) {
return this.addDoubleTapListener(obj, handler, id);
} else if ('addEventListener' in obj) {
if (type === 'mousewheel') {
obj.addEventListener('DOMMouseScroll', handler, false);
obj.addEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
originalHandler = handler;
newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
handler = function (e) {
if (!L.DomEvent._checkMouse(obj, e)) { return; }
return originalHandler(e);
};
obj.addEventListener(newType, handler, false);
} else {
obj.addEventListener(type, handler, false);
}
} else if ('attachEvent' in obj) {
obj.attachEvent("on" + type, handler);
}
obj[key] = handler;
return this;
},
removeListener: function (obj, type, fn) { // (HTMLElement, String, Function)
var id = L.Util.stamp(fn),
key = '_leaflet_' + type + id,
handler = obj[key];
if (!handler) { return; }
if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
this.removeDoubleTapListener(obj, id);
} else if ('removeEventListener' in obj) {
if (type === 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', handler, false);
obj.removeEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
} else {
obj.removeEventListener(type, handler, false);
}
} else if ('detachEvent' in obj) {
obj.detachEvent("on" + type, handler);
}
obj[key] = null;
return this;
},
stopPropagation: function (e) {
if (e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
return this;
},
disableClickPropagation: function (el) {
var stop = L.DomEvent.stopPropagation;
return L.DomEvent
.addListener(el, L.Draggable.START, stop)
.addListener(el, 'click', stop)
.addListener(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) {
var body = document.body,
docEl = document.documentElement,
x = e.pageX ? e.pageX : e.clientX + body.scrollLeft + docEl.scrollLeft,
y = e.pageY ? e.pageY : e.clientY + body.scrollTop + docEl.scrollTop,
pos = new L.Point(x, y);
return (container ? pos._subtract(L.DomUtil.getViewportOffset(container)) : pos);
},
getWheelDelta: function (e) {
var delta = 0;
if (e.wheelDelta) {
delta = e.wheelDelta / 120;
}
if (e.detail) {
delta = -e.detail / 3;
}
return delta;
},
// 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);
},
/*jshint noarg:false */
_getEvent: function () { // evil magic for IE
var e = window.event;
if (!e) {
var caller = arguments.callee.caller;
while (caller) {
e = caller['arguments'][0];
if (e && window.Event === e.constructor) {
break;
}
caller = caller.caller;
}
}
return e;
}
/*jshint noarg:false */
};
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',
END: L.Browser.touch ? 'touchend' : 'mouseup',
MOVE: L.Browser.touch ? 'touchmove' : 'mousemove',
TAP_TOLERANCE: 15
},
initialize: function (element, dragStartTarget) {
this._element = element;
this._dragStartTarget = dragStartTarget || element;
},
enable: function () {
if (this._enabled) {
return;
}
L.DomEvent.on(this._dragStartTarget, L.Draggable.START, this._onDown, this);
this._enabled = true;
},
disable: function () {
if (!this._enabled) {
return;
}
L.DomEvent.off(this._dragStartTarget, L.Draggable.START, this._onDown);
this._enabled = false;
this._moved = false;
},
_onDown: function (e) {
if ((!L.Browser.touch && e.shiftKey) || ((e.which !== 1) && (e.button !== 1) && !e.touches)) {
return;
}
this._simulateClick = true;
if (e.touches && e.touches.length > 1) {
this._simulateClick = false;
return;
}
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
el = first.target;
L.DomEvent.preventDefault(e);
if (L.Browser.touch && el.tagName.toLowerCase() === 'a') {
L.DomUtil.addClass(el, 'leaflet-active');
}
this._moved = false;
if (this._moving) {
return;
}
if (!L.Browser.touch) {
L.DomUtil.disableTextSelection();
this._setMovingCursor();
}
this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
this._startPoint = new L.Point(first.clientX, first.clientY);
L.DomEvent.on(document, L.Draggable.MOVE, this._onMove, this);
L.DomEvent.on(document, L.Draggable.END, this._onUp, this);
},
_onMove: function (e) {
if (e.touches && e.touches.length > 1) { return; }
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
newPoint = new L.Point(first.clientX, first.clientY),
diffVec = newPoint.subtract(this._startPoint);
if (!diffVec.x && !diffVec.y) { return; }
L.DomEvent.preventDefault(e);
if (!this._moved) {
this.fire('dragstart');
this._moved = true;
}
this._newPos = this._startPos.add(diffVec);
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 (e) {
if (this._simulateClick && e.changedTouches) {
var first = e.changedTouches[0],
el = first.target,
dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0;
if (el.tagName.toLowerCase() === 'a') {
L.DomUtil.removeClass(el, 'leaflet-active');
}
if (dist < L.Draggable.TAP_TOLERANCE) {
this._simulateEvent('click', first);
}
}
if (!L.Browser.touch) {
L.DomUtil.enableTextSelection();
this._restoreCursor();
}
L.DomEvent.off(document, L.Draggable.MOVE, this._onMove);
L.DomEvent.off(document, L.Draggable.END, this._onUp);
if (this._moved) {
// ensure drag is not fired after dragend
L.Util.cancelAnimFrame(this._animRequest);
this.fire('dragend');
}
this._moving = false;
},
_setMovingCursor: function () {
L.DomUtil.addClass(document.body, 'leaflet-dragging');
},
_restoreCursor: function () {
L.DomUtil.removeClass(document.body, 'leaflet-dragging');
},
_simulateEvent: function (type, e) {
var simulatedEvent = document.createEvent('MouseEvents');
simulatedEvent.initMouseEvent(
type, true, true, window, 1,
e.screenX, e.screenY,
e.clientX, e.clientY,
false, false, false, false, 0, null);
e.target.dispatchEvent(simulatedEvent);
}
});
/*
* L.Handler classes are used internally to inject interaction features to classes like Map and Marker.
*/
L.Handler = L.Class.extend({
initialize: function (map) {
this._map = map;
},
enable: function () {
if (this._enabled) { return; }
this._enabled = true;
this.addHooks();
},
disable: function () {
if (!this._enabled) { return; }
this._enabled = false;
this.removeHooks();
},
enabled: function () {
return !!this._enabled;
}
});
/*
* L.Handler.MapDrag is used internally by L.Map to make the map draggable.
*/
L.Map.mergeOptions({
dragging: true,
inertia: !L.Browser.android23,
inertiaDeceleration: 3000, // px/s^2
inertiaMaxSpeed: 1500, // px/s
inertiaThreshold: L.Browser.touch ? 32 : 14, // ms
// TODO refactor, move to CRS
worldCopyJump: true
});
L.Map.Drag = L.Handler.extend({
addHooks: function () {
if (!this._draggable) {
this._draggable = new L.Draggable(this._map._mapPane, this._map._container);
this._draggable.on({
'dragstart': this._onDragStart,
'drag': this._onDrag,
'dragend': this._onDragEnd
}, this);
var options = this._map.options;
if (options.worldCopyJump) {
this._draggable.on('predrag', this._onPreDrag, this);
this._map.on('viewreset', this._onViewReset, this);
}
}
this._draggable.enable();
},
removeHooks: function () {
this._draggable.disable();
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function () {
var map = this._map;
map
.fire('movestart')
.fire('dragstart');
if (map._panTransition) {
map._panTransition._onTransitionEnd(true);
}
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 () {
var pxCenter = this._map.getSize().divideBy(2),
pxWorldCenter = this._map.latLngToLayerPoint(new L.LatLng(0, 0));
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x;
this._worldWidth = this._map.project(new L.LatLng(0, 180)).x;
},
_onPreDrag: function () {
// TODO refactor to be able to adjust map pane position after zoom
var map = this._map,
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 () {
var map = this._map,
options = map.options,
delay = +new Date() - this._lastTime,
noInertia = !options.inertia ||
delay > options.inertiaThreshold ||
this._positions[0] === undefined;
if (noInertia) {
map.fire('moveend');
} else {
var direction = this._lastPos.subtract(this._positions[0]),
duration = (this._lastTime + delay - this._times[0]) / 1000,
speedVector = direction.multiplyBy(0.58 / duration),
speed = speedVector.distanceTo(new L.Point(0, 0)),
limitedSpeed = Math.min(options.inertiaMaxSpeed, speed),
limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed),
decelerationDuration = limitedSpeed / options.inertiaDeceleration,
offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round();
var panOptions = {
duration: decelerationDuration,
easing: 'ease-out'
};
L.Util.requestAnimFrame(L.Util.bind(function () {
this._map.panBy(offset, panOptions);
}, this));
}
map.fire('dragend');
if (options.maxBounds) {
// TODO predrag validation instead of animation
L.Util.requestAnimFrame(this._panInsideMaxBounds, map, true, map._container);
}
},
_panInsideMaxBounds: function () {
this.panInsideBounds(this.options.maxBounds);
}
});
L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag);
/*
* L.Handler.DoubleClickZoom is used internally by L.Map to add double-click zooming.
*/
L.Map.mergeOptions({
doubleClickZoom: true
});
L.Map.DoubleClickZoom = L.Handler.extend({
addHooks: function () {
this._map.on('dblclick', this._onDoubleClick);
},
removeHooks: function () {
this._map.off('dblclick', this._onDoubleClick);
},
_onDoubleClick: function (e) {
this.setView(e.latlng, this._zoom + 1);
}
});
L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom);
/*
* L.Handler.ScrollWheelZoom is used internally by L.Map to enable mouse scroll wheel zooming on the map.
*/
L.Map.mergeOptions({
scrollWheelZoom: !L.Browser.touch
});
L.Map.ScrollWheelZoom = L.Handler.extend({
addHooks: function () {
L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this);
this._delta = 0;
},
removeHooks: function () {
L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll);
},
_onWheelScroll: function (e) {
var delta = L.DomEvent.getWheelDelta(e);
this._delta += delta;
this._lastMousePos = this._map.mouseEventToContainerPoint(e);
clearTimeout(this._timer);
this._timer = setTimeout(L.Util.bind(this._performZoom, this), 40);
L.DomEvent.preventDefault(e);
},
_performZoom: function () {
var map = this._map,
delta = Math.round(this._delta),
zoom = map.getZoom();
delta = Math.max(Math.min(delta, 4), -4);
delta = map._limitZoom(zoom + delta) - zoom;
this._delta = 0;
if (!delta) { return; }
var newZoom = zoom + delta,
newCenter = this._getCenterForScrollWheelZoom(this._lastMousePos, newZoom);
map.setView(newCenter, newZoom);
},
_getCenterForScrollWheelZoom: function (mousePos, newZoom) {
var map = this._map,
scale = map.getZoomScale(newZoom),
viewHalf = map.getSize().divideBy(2),
centerOffset = mousePos.subtract(viewHalf).multiplyBy(1 - 1 / scale),
newCenterPoint = map._getTopLeftPoint().add(viewHalf).add(centerOffset);
return map.unproject(newCenterPoint);
}
});
L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom);
L.Util.extend(L.DomEvent, {
// inspired by Zepto touch code by Thomas Fuchs
addDoubleTapListener: function (obj, handler, id) {
var last,
doubleTap = false,
delay = 250,
touch,
pre = '_leaflet_',
touchstart = 'touchstart',
touchend = 'touchend';
function onTouchStart(e) {
if (e.touches.length !== 1) {
return;
}
var now = Date.now(),
delta = now - (last || now);
touch = e.touches[0];
doubleTap = (delta > 0 && delta <= delay);
last = now;
}
function onTouchEnd(e) {
if (doubleTap) {
touch.type = 'dblclick';
handler(touch);
last = null;
}
}
obj[pre + touchstart + id] = onTouchStart;
obj[pre + touchend + id] = onTouchEnd;
obj.addEventListener(touchstart, onTouchStart, false);
obj.addEventListener(touchend, onTouchEnd, false);
return this;
},
removeDoubleTapListener: function (obj, id) {
var pre = '_leaflet_';
obj.removeEventListener(obj, obj[pre + 'touchstart' + id], false);
obj.removeEventListener(obj, obj[pre + 'touchend' + id], false);
return this;
}
});
/*
* L.Handler.TouchZoom is used internally by L.Map to add touch-zooming on Webkit-powered mobile browsers.
*/
L.Map.mergeOptions({
touchZoom: L.Browser.touch && !L.Browser.android23
});
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, true);
this._startDist = p1.distanceTo(p2);
this._moved = false;
this._zooming = true;
this._centerOffset = viewCenter.subtract(this._startCenter);
L.DomEvent
.on(document, 'touchmove', this._onTouchMove, this)
.on(document, 'touchend', this._onTouchEnd, this);
L.DomEvent.preventDefault(e);
},
_onTouchMove: function (e) {
if (!e.touches || e.touches.length !== 2) { return; }
var map = this._map;
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, true).subtract(this._startCenter);
if (this._scale === 1) { return; }
if (!this._moved) {
L.DomUtil.addClass(map._mapPane, 'leaflet-zoom-anim leaflet-touching');
map
.fire('movestart')
.fire('zoomstart')
._prepareTileBg();
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);
map.fire('zoomanim', {
center: center,
zoom: map.getScaleZoom(this._scale)
});
// Used 2 translates instead of transform-origin because of a very strange bug -
// it didn't count the origin on the first touch-zoom but worked correctly afterwards
map._tileBg.style[L.DomUtil.TRANSFORM] =
L.DomUtil.getTranslateString(this._delta) + ' ' +
L.DomUtil.getScaleString(this._scale, this._startCenter);
},
_onTouchEnd: function (e) {
if (!this._moved || !this._zooming) { return; }
var map = this._map;
this._zooming = false;
L.DomUtil.removeClass(map._mapPane, 'leaflet-touching');
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);
map.fire('zoomanim', {
center: center,
zoom: zoom
});
map._runAnimation(center, zoom, map.getZoomScale(zoom) / this._scale, origin, true);
},
_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.Handler.ShiftDragZoom is used internally by L.Map to add shift-drag zoom (zoom to a selected bounding box).
*/
L.Map.mergeOptions({
boxZoom: true
});
L.Map.BoxZoom = L.Handler.extend({
initialize: function (map) {
this._map = map;
this._container = map._container;
this._pane = map._panes.overlayPane;
},
addHooks: function () {
L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this);
},
removeHooks: function () {
L.DomEvent.off(this._container, 'mousedown', this._onMouseDown);
},
_onMouseDown: function (e) {
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; }
L.DomUtil.disableTextSelection();
this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
L.DomUtil.setPosition(this._box, this._startLayerPoint);
//TODO refactor: move cursor to styles
this._container.style.cursor = 'crosshair';
L.DomEvent
.on(document, 'mousemove', this._onMouseMove, this)
.on(document, 'mouseup', this._onMouseUp, this)
.preventDefault(e);
this._map.fire("boxzoomstart");
},
_onMouseMove: function (e) {
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);
// TODO refactor: remove hardcoded 4 pixels
box.style.width = (Math.abs(offset.x) - 4) + 'px';
box.style.height = (Math.abs(offset.y) - 4) + 'px';
},
_onMouseUp: function (e) {
this._pane.removeChild(this._box);
this._container.style.cursor = '';
L.DomUtil.enableTextSelection();
L.DomEvent
.off(document, 'mousemove', this._onMouseMove)
.off(document, 'mouseup', this._onMouseUp);
var map = this._map,
layerPoint = map.mouseEventToLayerPoint(e);
var bounds = new L.LatLngBounds(
map.layerPointToLatLng(this._startLayerPoint),
map.layerPointToLatLng(layerPoint));
map.fitBounds(bounds);
map.fire("boxzoomend", {
boxZoomBounds: bounds
});
}
});
L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom);
L.Map.mergeOptions({
keyboard: true,
keyboardPanOffset: 80,
keyboardZoomOffset: 1
});
L.Map.Keyboard = L.Handler.extend({
// list of e.keyCode values for particular actions
keyCodes: {
left: [37],
right: [39],
down: [40],
up: [38],
zoomIn: [187, 61, 107],
zoomOut: [189, 109, 0]
},
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
.addListener(container, 'focus', this._onFocus, this)
.addListener(container, 'blur', this._onBlur, this)
.addListener(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
.removeListener(container, 'focus', this._onFocus, this)
.removeListener(container, 'blur', this._onBlur, this)
.removeListener(container, 'mousedown', this._onMouseDown, this);
this._map
.off('focus', this._addHooks, this)
.off('blur', this._removeHooks, this);
},
_onMouseDown: function () {
if (!this._focused) {
this._map._container.focus();
}
},
_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.addListener(document, 'keydown', this._onKeyDown, this);
},
_removeHooks: function () {
L.DomEvent.removeListener(document, 'keydown', this._onKeyDown, this);
},
_onKeyDown: function (e) {
var key = e.keyCode;
if (this._panKeys.hasOwnProperty(key)) {
this._map.panBy(this._panKeys[key]);
} else if (this._zoomKeys.hasOwnProperty(key)) {
this._map.setZoom(this._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)
.on('dragstart', this._onDragStart, this)
.on('drag', this._onDrag, this)
.on('dragend', this._onDragEnd, this);
}
this._draggable.enable();
},
removeHooks: function () {
this._draggable.disable();
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function (e) {
this._marker
.closePopup()
.fire('movestart')
.fire('dragstart');
},
_onDrag: function (e) {
// update shadow position
var iconPos = L.DomUtil.getPosition(this._marker._icon);
if (this._marker._shadow) {
L.DomUtil.setPosition(this._marker._shadow, iconPos);
}
this._marker._latlng = this._marker._map.layerPointToLatLng(iconPos);
this._marker
.fire('move')
.fire('drag');
},
_onDragEnd: function () {
this._marker
.fire('moveend')
.fire('dragend');
}
});
L.Handler.PolyEdit = L.Handler.extend({
options: {
icon: new L.DivIcon({
iconSize: new L.Point(8, 8),
className: 'leaflet-div-icon leaflet-editing-icon'
})
},
initialize: function (poly, options) {
this._poly = poly;
L.Util.setOptions(this, options);
},
addHooks: function () {
if (this._poly._map) {
if (!this._markerGroup) {
this._initMarkers();
}
this._poly._map.addLayer(this._markerGroup);
}
},
removeHooks: function () {
if (this._poly._map) {
this._poly._map.removeLayer(this._markerGroup);
delete this._markerGroup;
delete this._markers;
}
},
updateMarkers: function () {
this._markerGroup.clearLayers();
this._initMarkers();
},
_initMarkers: function () {
if (!this._markerGroup) {
this._markerGroup = new L.LayerGroup();
}
this._markers = [];
var latlngs = this._poly._latlngs,
i, j, len, marker;
// TODO refactor holes implementation in Polygon to support it here
for (i = 0, len = latlngs.length; i < len; i++) {
marker = this._createMarker(latlngs[i], i);
marker.on('click', this._onMarkerClick, this);
this._markers.push(marker);
}
var markerLeft, markerRight;
for (i = 0, j = len - 1; i < len; j = i++) {
if (i === 0 && !(L.Polygon && (this._poly instanceof L.Polygon))) {
continue;
}
markerLeft = this._markers[j];
markerRight = this._markers[i];
this._createMiddleMarker(markerLeft, markerRight);
this._updatePrevNext(markerLeft, markerRight);
}
},
_createMarker: function (latlng, index) {
var marker = new L.Marker(latlng, {
draggable: true,
icon: this.options.icon
});
marker._origLatLng = latlng;
marker._index = index;
marker.on('drag', this._onMarkerDrag, this);
marker.on('dragend', this._fireEdit, this);
this._markerGroup.addLayer(marker);
return marker;
},
_fireEdit: function () {
this._poly.fire('edit');
},
_onMarkerDrag: function (e) {
var marker = e.target;
L.Util.extend(marker._origLatLng, marker._latlng);
if (marker._middleLeft) {
marker._middleLeft.setLatLng(this._getMiddleLatLng(marker._prev, marker));
}
if (marker._middleRight) {
marker._middleRight.setLatLng(this._getMiddleLatLng(marker, marker._next));
}
this._poly.redraw();
},
_onMarkerClick: function (e) {
// Default action on marker click is to remove that marker, but if we remove the marker when latlng count < 3, we don't have a valid polyline anymore
if (this._poly._latlngs.length < 3) {
return;
}
var marker = e.target,
i = marker._index;
// Check existence of previous and next markers since they wouldn't exist for edge points on the polyline
if (marker._prev && marker._next) {
this._createMiddleMarker(marker._prev, marker._next);
this._updatePrevNext(marker._prev, marker._next);
}
// The marker itself is guaranteed to exist and present in the layer, since we managed to click on it
this._markerGroup.removeLayer(marker);
// Check for the existence of middle left or middle right
if (marker._middleLeft) {
this._markerGroup.removeLayer(marker._middleLeft);
}
if (marker._middleRight) {
this._markerGroup.removeLayer(marker._middleRight);
}
this._markers.splice(i, 1);
this._poly.spliceLatLngs(i, 1);
this._updateIndexes(i, -1);
this._poly.fire('edit');
},
_updateIndexes: function (index, delta) {
this._markerGroup.eachLayer(function (marker) {
if (marker._index > index) {
marker._index += delta;
}
});
},
_createMiddleMarker: function (marker1, marker2) {
var latlng = this._getMiddleLatLng(marker1, marker2),
marker = this._createMarker(latlng),
onClick,
onDragStart,
onDragEnd;
marker.setOpacity(0.6);
marker1._middleRight = marker2._middleLeft = marker;
onDragStart = function () {
var i = marker2._index;
marker._index = i;
marker
.off('click', onClick)
.on('click', this._onMarkerClick, this);
latlng.lat = marker.getLatLng().lat;
latlng.lng = marker.getLatLng().lng;
this._poly.spliceLatLngs(i, 0, latlng);
this._markers.splice(i, 0, marker);
marker.setOpacity(1);
this._updateIndexes(i, 1);
marker2._index++;
this._updatePrevNext(marker1, marker);
this._updatePrevNext(marker, marker2);
};
onDragEnd = function () {
marker.off('dragstart', onDragStart, this);
marker.off('dragend', onDragEnd, this);
this._createMiddleMarker(marker1, marker);
this._createMiddleMarker(marker, marker2);
};
onClick = function () {
onDragStart.call(this);
onDragEnd.call(this);
this._poly.fire('edit');
};
marker
.on('click', onClick, this)
.on('dragstart', onDragStart, this)
.on('dragend', onDragEnd, this);
this._markerGroup.addLayer(marker);
},
_updatePrevNext: function (marker1, marker2) {
marker1._next = marker2;
marker2._prev = marker1;
},
_getMiddleLatLng: function (marker1, marker2) {
var map = this._poly._map,
p1 = map.latLngToLayerPoint(marker1.getLatLng()),
p2 = map.latLngToLayerPoint(marker2.getLatLng());
return map.layerPointToLatLng(p1._add(p2).divideBy(2));
}
});
L.Control = L.Class.extend({
options: {
position: 'topright'
},
initialize: function (options) {
L.Util.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;
},
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;
}
});
L.control = function (options) {
return new L.Control(options);
};
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');
}
});
L.Control.Zoom = L.Control.extend({
options: {
position: 'topleft'
},
onAdd: function (map) {
var className = 'leaflet-control-zoom',
container = L.DomUtil.create('div', className);
this._createButton('Zoom in', className + '-in', container, map.zoomIn, map);
this._createButton('Zoom out', className + '-out', container, map.zoomOut, map);
return container;
},
_createButton: function (title, className, container, fn, context) {
var link = L.DomUtil.create('a', className, container);
link.href = '#';
link.title = title;
L.DomEvent
.on(link, 'click', L.DomEvent.stopPropagation)
.on(link, 'click', L.DomEvent.preventDefault)
.on(link, 'click', fn, context)
.on(link, 'dblclick', L.DomEvent.stopPropagation);
return link;
}
});
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 = L.Control.extend({
options: {
position: 'bottomright',
prefix: 'Powered by Leaflet'
},
initialize: function (options) {
L.Util.setOptions(this, options);
this._attributions = {};
},
onAdd: function (map) {
this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
L.DomEvent.disableClickPropagation(this._container);
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; }
this._attributions[text]--;
this._update();
return this;
},
_update: function () {
if (!this._map) { return; }
var attribs = [];
for (var i in this._attributions) {
if (this._attributions.hasOwnProperty(i) && 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 = 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);
this._update();
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 = L.Control.extend({
options: {
collapsed: true,
position: 'topright',
autoZIndex: true
},
initialize: function (baseLayers, overlays, options) {
L.Util.setOptions(this, options);
this._layers = {};
this._lastZIndex = 0;
for (var i in baseLayers) {
if (baseLayers.hasOwnProperty(i)) {
this._addLayer(baseLayers[i], i);
}
}
for (i in overlays) {
if (overlays.hasOwnProperty(i)) {
this._addLayer(overlays[i], i, true);
}
}
},
onAdd: function (map) {
this._initLayout();
this._update();
return this._container;
},
addBaseLayer: function (layer, name) {
this._addLayer(layer, name);
this._update();
return this;
},
addOverlay: function (layer, name) {
this._addLayer(layer, name, true);
this._update();
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
delete this._layers[id];
this._update();
return this;
},
_initLayout: function () {
var className = 'leaflet-control-layers',
container = this._container = L.DomUtil.create('div', className);
if (!L.Browser.touch) {
L.DomEvent.disableClickPropagation(container);
} else {
L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
}
var form = this._form = L.DomUtil.create('form', className + '-list');
if (this.options.collapsed) {
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.stopPropagation)
.on(link, 'click', L.DomEvent.preventDefault)
.on(link, 'click', this._expand, this);
}
else {
L.DomEvent.on(link, 'focus', this._expand, this);
}
this._map.on('movestart', 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.Util.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;
for (var i in this._layers) {
if (this._layers.hasOwnProperty(i)) {
var obj = this._layers[i];
this._addItem(obj);
overlaysPresent = overlaysPresent || obj.overlay;
baseLayersPresent = baseLayersPresent || !obj.overlay;
}
}
this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none');
},
_addItem: function (obj, onclick) {
var label = document.createElement('label');
var input = document.createElement('input');
if (!obj.overlay) {
input.name = 'leaflet-base-layers';
}
input.type = obj.overlay ? 'checkbox' : 'radio';
input.layerId = L.Util.stamp(obj.layer);
input.defaultChecked = this._map.hasLayer(obj.layer);
L.DomEvent.on(input, 'click', this._onInputClick, this);
var name = document.createTextNode(' ' + obj.name);
label.appendChild(input);
label.appendChild(name);
var container = obj.overlay ? this._overlaysList : this._baseLayersList;
container.appendChild(label);
},
_onInputClick: function () {
var i, input, obj,
inputs = this._form.getElementsByTagName('input'),
inputsLen = inputs.length;
for (i = 0; i < inputsLen; i++) {
input = inputs[i];
obj = this._layers[input.layerId];
if (input.checked) {
this._map.addLayer(obj.layer, !obj.overlay);
} else {
this._map.removeLayer(obj.layer);
}
}
},
_expand: function () {
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
},
_collapse: function () {
this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
}
});
L.control.layers = function (baseLayers, overlays, options) {
return new L.Control.Layers(baseLayers, overlays, options);
};
L.Transition = L.Class.extend({
includes: L.Mixin.Events,
statics: {
CUSTOM_PROPS_SETTERS: {
position: L.DomUtil.setPosition
//TODO transform custom attr
},
implemented: function () {
return L.Transition.NATIVE || L.Transition.TIMER;
}
},
options: {
easing: 'ease',
duration: 0.5
},
_setProperty: function (prop, value) {
var setters = L.Transition.CUSTOM_PROPS_SETTERS;
if (prop in setters) {
setters[prop](this._el, value);
} else {
this._el.style[prop] = value;
}
}
});
/*
* L.Transition native implementation that powers Leaflet animation
* in browsers that support CSS3 Transitions
*/
L.Transition = L.Transition.extend({
statics: (function () {
var transition = L.DomUtil.TRANSITION,
transitionEnd = (transition === 'webkitTransition' || transition === 'OTransition' ?
transition + 'End' : 'transitionend');
return {
NATIVE: !!transition,
TRANSITION: transition,
PROPERTY: transition + 'Property',
DURATION: transition + 'Duration',
EASING: transition + 'TimingFunction',
END: transitionEnd,
// transition-property value to use with each particular custom property
CUSTOM_PROPS_PROPERTIES: {
position: L.Browser.any3d ? L.DomUtil.TRANSFORM : 'top, left'
}
};
}()),
options: {
fakeStepInterval: 100
},
initialize: function (/*HTMLElement*/ el, /*Object*/ options) {
this._el = el;
L.Util.setOptions(this, options);
L.DomEvent.on(el, L.Transition.END, this._onTransitionEnd, this);
this._onFakeStep = L.Util.bind(this._onFakeStep, this);
},
run: function (/*Object*/ props) {
var prop,
propsList = [],
customProp = L.Transition.CUSTOM_PROPS_PROPERTIES;
for (prop in props) {
if (props.hasOwnProperty(prop)) {
prop = customProp[prop] ? customProp[prop] : prop;
prop = this._dasherize(prop);
propsList.push(prop);
}
}
this._el.style[L.Transition.DURATION] = this.options.duration + 's';
this._el.style[L.Transition.EASING] = this.options.easing;
this._el.style[L.Transition.PROPERTY] = propsList.join(', ');
for (prop in props) {
if (props.hasOwnProperty(prop)) {
this._setProperty(prop, props[prop]);
}
}
this._inProgress = true;
this.fire('start');
if (L.Browser.mobileWebkit) {
// Set up a slightly delayed call to a backup event if webkitTransitionEnd doesn't fire properly
this.backupEventFire = setTimeout(L.Util.bind(this._onBackupFireEnd, this), this.options.duration * 1.2 * 1000);
}
if (L.Transition.NATIVE) {
clearInterval(this._timer);
this._timer = setInterval(this._onFakeStep, this.options.fakeStepInterval);
} else {
this._onTransitionEnd();
}
},
_dasherize: (function () {
var re = /([A-Z])/g;
function replaceFn(w) {
return '-' + w.toLowerCase();
}
return function (str) {
return str.replace(re, replaceFn);
};
}()),
_onFakeStep: function () {
this.fire('step');
},
_onTransitionEnd: function (e) {
if (this._inProgress) {
this._inProgress = false;
clearInterval(this._timer);
this._el.style[L.Transition.TRANSITION] = '';
// Clear the delayed call to the backup event, we have recieved some form of webkitTransitionEnd
clearTimeout(this.backupEventFire);
delete this.backupEventFire;
this.fire('step');
if (e && e.type) {
this.fire('end');
}
}
},
_onBackupFireEnd: function () {
// Create and fire a transitionEnd event on the element.
var event = document.createEvent("Event");
event.initEvent(L.Transition.END, true, false);
this._el.dispatchEvent(event);
}
});
/*
* L.Transition fallback implementation that powers Leaflet animation
* in browsers that don't support CSS3 Transitions
*/
L.Transition = L.Transition.NATIVE ? L.Transition : L.Transition.extend({
statics: {
getTime: Date.now || function () {
return +new Date();
},
TIMER: true,
EASINGS: {
'linear': function (t) { return t; },
'ease-out': function (t) { return t * (2 - t); }
},
CUSTOM_PROPS_GETTERS: {
position: L.DomUtil.getPosition
},
//used to get units from strings like "10.5px" (->px)
UNIT_RE: /^[\d\.]+(\D*)$/
},
options: {
fps: 50
},
initialize: function (el, options) {
this._el = el;
L.Util.extend(this.options, options);
this._easing = L.Transition.EASINGS[this.options.easing] || L.Transition.EASINGS['ease-out'];
this._step = L.Util.bind(this._step, this);
this._interval = Math.round(1000 / this.options.fps);
},
run: function (props) {
this._props = {};
var getters = L.Transition.CUSTOM_PROPS_GETTERS,
re = L.Transition.UNIT_RE;
this.fire('start');
for (var prop in props) {
if (props.hasOwnProperty(prop)) {
var p = {};
if (prop in getters) {
p.from = getters[prop](this._el);
} else {
var matches = this._el.style[prop].match(re);
p.from = parseFloat(matches[0]);
p.unit = matches[1];
}
p.to = props[prop];
this._props[prop] = p;
}
}
clearInterval(this._timer);
this._timer = setInterval(this._step, this._interval);
this._startTime = L.Transition.getTime();
},
_step: function () {
var time = L.Transition.getTime(),
elapsed = time - this._startTime,
duration = this.options.duration * 1000;
if (elapsed < duration) {
this._runFrame(this._easing(elapsed / duration));
} else {
this._runFrame(1);
this._complete();
}
},
_runFrame: function (percentComplete) {
var setters = L.Transition.CUSTOM_PROPS_SETTERS,
prop, p, value;
for (prop in this._props) {
if (this._props.hasOwnProperty(prop)) {
p = this._props[prop];
if (prop in setters) {
value = p.to.subtract(p.from).multiplyBy(percentComplete).add(p.from);
setters[prop](this._el, value);
} else {
this._el.style[prop] =
((p.to - p.from) * percentComplete + p.from) + p.unit;
}
}
}
this.fire('step');
},
_complete: function () {
clearInterval(this._timer);
this.fire('end');
}
});
L.Map.include(!(L.Transition && L.Transition.implemented()) ? {} : {
setView: function (center, zoom, forceReset) {
zoom = this._limitZoom(zoom);
var zoomChanged = (this._zoom !== zoom);
if (this._loaded && !forceReset && this._layers) {
var done = (zoomChanged ?
this._zoomToIfClose && this._zoomToIfClose(center, zoom) :
this._panByIfClose(center));
// exit if animated pan or zoom started
if (done) {
clearTimeout(this._sizeTimer);
return this;
}
}
// reset the map view
this._resetView(center, zoom);
return this;
},
panBy: function (offset, options) {
offset = L.point(offset);
if (!(offset.x || offset.y)) {
return this;
}
if (!this._panTransition) {
this._panTransition = new L.Transition(this._mapPane);
this._panTransition.on({
'step': this._onPanTransitionStep,
'end': this._onPanTransitionEnd
}, this);
}
L.Util.setOptions(this._panTransition, L.Util.extend({duration: 0.25}, options));
this.fire('movestart');
L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');
this._panTransition.run({
position: L.DomUtil.getPosition(this._mapPane).subtract(offset)
});
return this;
},
_onPanTransitionStep: function () {
this.fire('move');
},
_onPanTransitionEnd: function () {
L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
this.fire('moveend');
},
_panByIfClose: function (center) {
// difference between the new and current centers in pixels
var offset = this._getCenterOffset(center)._floor();
if (this._offsetIsWithinView(offset)) {
this.panBy(offset);
return true;
}
return false;
},
_offsetIsWithinView: function (offset, multiplyFactor) {
var m = multiplyFactor || 1,
size = this.getSize();
return (Math.abs(offset.x) <= size.x * m) &&
(Math.abs(offset.y) <= size.y * m);
}
});
L.Map.mergeOptions({
zoomAnimation: L.DomUtil.TRANSITION && !L.Browser.android23 && !L.Browser.mobileOpera
});
L.Map.include(!L.DomUtil.TRANSITION ? {} : {
_zoomToIfClose: function (center, zoom) {
if (this._animatingZoom) { return true; }
if (!this.options.zoomAnimation) { return false; }
var scale = this.getZoomScale(zoom),
offset = this._getCenterOffset(center).divideBy(1 - 1 / scale);
// if offset does not exceed half of the view
if (!this._offsetIsWithinView(offset, 1)) { return false; }
L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim');
this
.fire('movestart')
.fire('zoomstart');
this._prepareTileBg();
this.fire('zoomanim', {
center: center,
zoom: zoom
});
var origin = this._getCenterLayerPoint().add(offset);
this._runAnimation(center, zoom, scale, origin);
return true;
},
_runAnimation: function (center, zoom, scale, origin, backwardsTransform) {
this._animatingZoom = true;
this._animateToCenter = center;
this._animateToZoom = zoom;
var transform = L.DomUtil.TRANSFORM,
tileBg = this._tileBg;
clearTimeout(this._clearTileBgTimer);
//dumb FireFox hack, I have no idea why this magic zero translate fixes the scale transition problem
if (L.Browser.gecko || window.opera) {
tileBg.style[transform] += ' translate(0,0)';
}
var scaleStr;
// Android 2.* doesn't like translate/scale chains, transformOrigin + scale works better but
// it breaks touch zoom which Anroid doesn't support anyway, so that's a really ugly hack
// TODO work around this prettier
if (L.Browser.android23) {
tileBg.style[transform + 'Origin'] = origin.x + 'px ' + origin.y + 'px';
scaleStr = 'scale(' + scale + ')';
} else {
scaleStr = L.DomUtil.getScaleString(scale, origin);
}
L.Util.falseFn(tileBg.offsetWidth); //hack to make sure transform is updated before running animation
var options = {};
if (backwardsTransform) {
options[transform] = tileBg.style[transform] + ' ' + scaleStr;
} else {
options[transform] = scaleStr + ' ' + tileBg.style[transform];
}
tileBg.transition.run(options);
},
_prepareTileBg: function () {
var tilePane = this._tilePane,
tileBg = this._tileBg;
// If foreground layer doesn't have many tiles but bg layer does, keep the existing bg layer and just zoom it some more
// (disable this for Android due to it not supporting double translate)
if (!L.Browser.android23 && tileBg &&
this._getLoadedTilesPercentage(tileBg) > 0.5 &&
this._getLoadedTilesPercentage(tilePane) < 0.5) {
tilePane.style.visibility = 'hidden';
tilePane.empty = true;
this._stopLoadingImages(tilePane);
return;
}
if (!tileBg) {
tileBg = this._tileBg = this._createPane('leaflet-tile-pane', this._mapPane);
tileBg.style.zIndex = 1;
}
// prepare the background pane to become the main tile pane
tileBg.style[L.DomUtil.TRANSFORM] = '';
tileBg.style.visibility = 'hidden';
// tells tile layers to reinitialize their containers
tileBg.empty = true; //new FG
tilePane.empty = false; //new BG
//Switch out the current layer to be the new bg layer (And vice-versa)
this._tilePane = this._panes.tilePane = tileBg;
var newTileBg = this._tileBg = tilePane;
if (!newTileBg.transition) {
// TODO move to Map options
newTileBg.transition = new L.Transition(newTileBg, {
duration: 0.25,
easing: 'cubic-bezier(0.25,0.1,0.25,0.75)'
});
newTileBg.transition.on('end', this._onZoomTransitionEnd, this);
}
this._stopLoadingImages(newTileBg);
},
_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);
}
}
},
_onZoomTransitionEnd: function () {
this._restoreTileFront();
L.Util.falseFn(this._tileBg.offsetWidth); // force reflow
this._resetView(this._animateToCenter, this._animateToZoom, true, true);
L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim');
this._animatingZoom = false;
},
_restoreTileFront: function () {
this._tilePane.innerHTML = '';
this._tilePane.style.visibility = '';
this._tilePane.style.zIndex = 2;
this._tileBg.style.zIndex = 1;
},
_clearTileBg: function () {
if (!this._animatingZoom && !this.touchZoom._zooming) {
this._tileBg.innerHTML = '';
}
}
});
/*
* Provides L.Map with convenient shortcuts for W3C geolocation.
*/
L.Map.include({
_defaultLocateOptions: {
watch: false,
setView: false,
maxZoom: Infinity,
timeout: 10000,
maximumAge: 0,
enableHighAccuracy: false
},
locate: function (/*Object*/ options) {
options = this._locationOptions = L.Util.extend(this._defaultLocateOptions, options);
if (!navigator.geolocation) {
this._handleGeolocationError({
code: 0,
message: "Geolocation not supported."
});
return this;
}
var onResponse = L.Util.bind(this._handleGeolocationResponse, this),
onError = L.Util.bind(this._handleGeolocationError, this);
if (options.watch) {
this._locationWatchId = navigator.geolocation.watchPosition(onResponse, onError, options);
} else {
navigator.geolocation.getCurrentPosition(onResponse, onError, options);
}
return this;
},
stopLocate: function () {
if (navigator.geolocation) {
navigator.geolocation.clearWatch(this._locationWatchId);
}
return this;
},
_handleGeolocationError: function (error) {
var c = error.code,
message = error.message ||
(c === 1 ? "permission denied" :
(c === 2 ? "position unavailable" : "timeout"));
if (this._locationOptions.setView && !this._loaded) {
this.fitWorld();
}
this.fire('locationerror', {
code: c,
message: "Geolocation error: " + message + "."
});
},
_handleGeolocationResponse: function (pos) {
var latAccuracy = 180 * pos.coords.accuracy / 4e7,
lngAccuracy = latAccuracy * 2,
lat = pos.coords.latitude,
lng = pos.coords.longitude,
latlng = new L.LatLng(lat, lng),
sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy),
ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy),
bounds = new L.LatLngBounds(sw, ne),
options = this._locationOptions;
if (options.setView) {
var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom);
this.setView(latlng, zoom);
}
this.fire('locationfound', {
latlng: latlng,
bounds: bounds,
accuracy: pos.coords.accuracy
});
}
});
}(this));