/*
Copyright (c) 2010-2011, CloudMade, Vladimir Agafonkin
Leaflet is a modern open-source JavaScript library for interactive maps.
http://leaflet.cloudmade.com
*/
(function (root) {
root.L = {
VERSION: '0.3',
ROOT_URL: root.L_ROOT_URL || (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) {
if (matches[1] === 'include') {
return '../../dist/';
}
return src.split(leafletRe)[0] + '/';
}
}
return '';
}()),
noConflict: function () {
root.L = this._originalL;
return this;
},
_originalL: root.L
};
}(this));
/*
* 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 (/*Function*/ fn, /*Object*/ obj) /*-> Object*/ {
return function () {
return fn.apply(obj, arguments);
};
},
stamp: (function () {
var lastId = 0, key = '_leaflet_id';
return function (/*Object*/ obj) {
obj[key] = obj[key] || ++lastId;
return obj[key];
};
}()),
requestAnimFrame: (function () {
function timeoutDefer(callback) {
window.setTimeout(callback, 1000 / 60);
}
var requestFn = window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
timeoutDefer;
return function (callback, context, immediate, contextEl) {
callback = context ? L.Util.bind(callback, context) : callback;
if (immediate && requestFn === timeoutDefer) {
callback();
} else {
requestFn(callback, contextEl);
}
};
}()),
limitExecByInterval: function (fn, time, context) {
var lock, execOnUnlock, args;
function exec() {
lock = false;
if (execOnUnlock) {
args.callee.apply(context, args);
execOnUnlock = false;
}
}
return function () {
args = arguments;
if (!lock) {
lock = true;
setTimeout(exec, time);
fn.apply(context, args);
} else {
execOnUnlock = true;
}
};
},
falseFn: function () {
return false;
},
formatNum: function (num, digits) {
var pow = Math.pow(10, digits || 5);
return Math.round(num * pow) / pow;
},
setOptions: function (obj, options) {
obj.options = L.Util.extend({}, obj.options, 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;
});
}
};
/*
* 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;
// add superclass access
NewClass.superclass = this.prototype;
// add class name
//proto.className = props;
//inherit parent's statics
for (var i in this) {
if (this.hasOwnProperty(i) && i !== 'prototype' && i !== 'superclass') {
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);
// allow inheriting further
NewClass.extend = L.Class.extend;
// method for adding properties to prototype
NewClass.include = function (props) {
L.Util.extend(this.prototype, props);
};
return NewClass;
};
/*
* L.Mixin.Events adds custom events functionality to Leaflet classes
*/
L.Mixin = {};
L.Mixin.Events = {
addEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
var events = this._leaflet_events = this._leaflet_events || {};
events[type] = events[type] || [];
events[type].push({
action: fn,
context: context || this
});
return this;
},
hasEventListeners: function (/*String*/ type) /*-> Boolean*/ {
var k = '_leaflet_events';
return (k in this) && (type in this[k]) && (this[k][type].length > 0);
},
removeEventListener: function (/*String*/ type, /*Function*/ fn, /*(optional) Object*/ context) {
if (!this.hasEventListeners(type)) {
return this;
}
for (var i = 0, events = this._leaflet_events, len = events[type].length; i < len; i++) {
if (
(events[type][i].action === fn) &&
(!context || (events[type][i].context === context))
) {
events[type].splice(i, 1);
return this;
}
}
return this;
},
fireEvent: function (/*String*/ type, /*(optional) Object*/ data) {
if (!this.hasEventListeners(type)) {
return this;
}
var event = L.Util.extend({
type: type,
target: this
}, data);
var listeners = this._leaflet_events[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,
webkit = ua.indexOf("webkit") !== -1,
mobile = typeof orientation !== 'undefined' ? true : false,
android = ua.indexOf("android") !== -1,
opera = window.opera;
L.Browser = {
ie: ie,
ie6: ie && !window.XMLHttpRequest,
webkit: webkit,
webkit3d: webkit && ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()),
gecko: ua.indexOf("gecko") !== -1,
opera: opera,
android: android,
mobileWebkit: mobile && webkit,
mobileOpera: mobile && opera,
mobile: mobile,
touch: (function () {
var touchSupported = false,
startName = 'ontouchstart';
// WebKit, etc
if (startName in document.documentElement) {
return true;
}
// Firefox/Gecko
var e = document.createElement('div');
// If no support for basic event stuff, unlikely to have touch support
if (!e.setAttribute || !e.removeAttribute) {
return false;
}
e.setAttribute(startName, 'return;');
if (typeof e[startName] === 'function') {
touchSupported = true;
}
e.removeAttribute(startName);
e = null;
return touchSupported;
}())
};
}());
/*
* 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(point);
},
_add: function (point) {
this.x += point.x;
this.y += point.y;
return this;
},
subtract: function (point) {
return this.clone()._subtract(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) {
return new L.Point(this.x * num, this.y * num);
},
distanceTo: function (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;
},
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.Bounds represents a rectangular area on the screen in pixel coordinates.
*/
L.Bounds = L.Class.extend({
initialize: function (min, max) { //(Point, Point) or Point[]
if (!min) {
return;
}
var points = (min instanceof Array ? min : [min, max]);
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) {
if (!this.min && !this.max) {
this.min = new L.Point(point.x, point.y);
this.max = new L.Point(point.x, point.y);
} 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);
}
},
getCenter: function (round)/*->Point*/ {
return new L.Point(
(this.min.x + this.max.x) / 2,
(this.min.y + this.max.y) / 2, round);
},
contains: function (/*Bounds or Point*/ obj)/*->Boolean*/ {
var min, max;
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) {
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.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;
}
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) {
el.className = el.className.replace(/(\S+)\s*/g, function (w, match) {
if (match === name) {
return '';
}
return w;
}).replace(/^\s+/, '');
},
setOpacity: function (el, value) {
if (L.Browser.ie) {
el.style.filter = 'alpha(opacity=' + Math.round(value * 100) + ')';
} else {
el.style.opacity = value;
}
},
//TODO refactor away this ugly translate/position mess
testProp: function (props) {
var style = document.documentElement.style;
for (var i = 0; i < props.length; i++) {
if (props[i] in style) {
return props[i];
}
}
return false;
},
getTranslateString: function (point) {
return L.DomUtil.TRANSLATE_OPEN +
point.x + 'px,' + point.y + 'px' +
L.DomUtil.TRANSLATE_CLOSE;
},
getScaleString: function (scale, origin) {
var preTranslateStr = L.DomUtil.getTranslateString(origin),
scaleStr = ' scale(' + scale + ') ',
postTranslateStr = L.DomUtil.getTranslateString(origin.multiplyBy(-1));
return preTranslateStr + scaleStr + postTranslateStr;
},
setPosition: function (el, point) {
el._leaflet_pos = point;
if (L.Browser.webkit3d) {
el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point);
if (L.Browser.android) {
el.style['-webkit-perspective'] = '1000';
el.style['-webkit-backface-visibility'] = 'hidden';
}
} else {
el.style.left = point.x + 'px';
el.style.top = point.y + 'px';
}
},
getPosition: function (el) {
return el._leaflet_pos;
}
};
L.Util.extend(L.DomUtil, {
TRANSITION: L.DomUtil.testProp(['transition', 'webkitTransition', 'OTransition', 'MozTransition', 'msTransition']),
TRANSFORM: L.DomUtil.testProp(['transformProperty', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']),
TRANSLATE_OPEN: 'translate' + (L.Browser.webkit3d ? '3d(' : '('),
TRANSLATE_CLOSE: L.Browser.webkit3d ? ',0)' : ')'
});
/*
CM.LatLng represents a geographical point with latitude and longtitude coordinates.
*/
L.LatLng = function (/*Number*/ rawLat, /*Number*/ rawLng, /*Boolean*/ noWrap) {
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
}
//TODO change to lat() & lng()
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 (/*LatLng*/ obj) {
if (!(obj instanceof L.LatLng)) {
return false;
}
var margin = Math.max(Math.abs(this.lat - obj.lat), Math.abs(this.lng - obj.lng));
return margin <= L.LatLng.MAX_MARGIN;
},
toString: function () {
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 (/*LatLng*/ other)/*->Double*/ {
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.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 = (southWest instanceof Array ? southWest : [southWest, northEast]);
for (var i = 0, len = latlngs.length; i < len; i++) {
this.extend(latlngs[i]);
}
},
// extend the bounds to contain the given point
extend: function (/*LatLng*/ latlng) {
if (!this._southWest && !this._northEast) {
this._southWest = new L.LatLng(latlng.lat, latlng.lng, true);
this._northEast = new L.LatLng(latlng.lat, latlng.lng, true);
} else {
this._southWest.lat = Math.min(latlng.lat, this._southWest.lat);
this._southWest.lng = Math.min(latlng.lng, this._southWest.lng);
this._northEast.lat = Math.max(latlng.lat, this._northEast.lat);
this._northEast.lng = Math.max(latlng.lng, this._northEast.lng);
}
},
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 (/*LatLngBounds or LatLng*/ obj) /*-> Boolean*/ {
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 (/*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(',');
}
});
//TODO International date line?
/*
* 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*/ unbounded) /*-> LatLng*/ {
var d = L.LatLng.RAD_TO_DEG,
lng = point.x * d,
lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d;
return new L.LatLng(lat, lng, unbounded);
}
};
L.Projection.LonLat = {
project: function (latlng) {
return new L.Point(latlng.lng, latlng.lat);
},
unproject: function (point, unbounded) {
return new L.LatLng(point.y, point.x, unbounded);
}
};
L.CRS = {
latLngToPoint: function (/*LatLng*/ latlng, /*Number*/ scale)/*-> Point*/ {
var projectedPoint = this.projection.project(latlng);
return this.transformation._transform(projectedPoint, scale);
},
pointToLatLng: function (/*Point*/ point, /*Number*/ scale, /*(optional) Boolean*/ unbounded)/*-> LatLng*/ {
var untransformedPoint = this.transformation.untransform(point, scale);
return this.projection.unproject(untransformedPoint, unbounded);
//TODO get rid of 'unbounded' everywhere
},
project: function (latlng) {
return this.projection.project(latlng);
}
};
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: {
// projection
crs: L.CRS.EPSG3857 || L.CRS.EPSG4326,
scale: function (zoom) {
return 256 * Math.pow(2, zoom);
},
// state
center: null,
zoom: null,
layers: [],
// interaction
dragging: true,
touchZoom: L.Browser.touch && !L.Browser.android,
scrollWheelZoom: !L.Browser.touch,
doubleClickZoom: true,
boxZoom: true,
// controls
zoomControl: true,
attributionControl: true,
// animation
fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android,
zoomAnimation: L.DomUtil.TRANSITION && !L.Browser.android && !L.Browser.mobileOpera,
// misc
trackResize: true,
closePopupOnClick: true,
worldCopyJump: true
},
// constructor
initialize: function (id, options) { // (HTMLElement or String, Object)
L.Util.setOptions(this, options);
this._container = L.DomUtil.get(id);
if (this._container._leaflet) {
throw new Error("Map container is already initialized.");
}
this._container._leaflet = true;
this._initLayout();
if (L.DomEvent) {
this._initEvents();
if (L.Handler) {
this._initInteraction();
}
if (L.Control) {
this._initControls();
}
}
if (this.options.maxBounds) {
this.setMaxBounds(this.options.maxBounds);
}
var center = this.options.center,
zoom = this.options.zoom;
if (center !== null && zoom !== null) {
this.setView(center, zoom, true);
}
var layers = this.options.layers;
layers = (layers instanceof Array ? layers : [layers]);
this._tileLayersNum = 0;
this._initLayers(layers);
},
// public methods that modify map state
// replaced by animation-powered implementation in Map.PanAnimation.js
setView: function (center, zoom) {
// reset the map view
this._resetView(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(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(offset);
this.fire('move');
this.fire('moveend');
return this;
},
setMaxBounds: function (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) {
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, insertAtTheTop) {
var id = L.Util.stamp(layer);
if (this._layers[id]) {
return this;
}
this._layers[id] = layer;
if (layer.options && !isNaN(layer.options.maxZoom)) {
this._layersMaxZoom = Math.max(this._layersMaxZoom || 0, layer.options.maxZoom);
}
if (layer.options && !isNaN(layer.options.minZoom)) {
this._layersMinZoom = Math.min(this._layersMinZoom || Infinity, layer.options.minZoom);
}
//TODO getMaxZoom, getMinZoom in ILayer (instead of options)
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
this._tileLayersNum++;
layer.on('load', this._onTileLayerLoad, this);
}
if (this.attributionControl && layer.getAttribution) {
this.attributionControl.addAttribution(layer.getAttribution());
}
var onMapLoad = function () {
layer.onAdd(this, insertAtTheTop);
this.fire('layeradd', {layer: layer});
};
if (this._loaded) {
onMapLoad.call(this);
} else {
this.on('load', onMapLoad, this);
}
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
if (this._layers[id]) {
layer.onRemove(this);
delete this._layers[id];
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) {
this._tileLayersNum--;
layer.off('load', this._onTileLayerLoad, this);
}
if (this.attributionControl && layer.getAttribution) {
this.attributionControl.removeAttribution(layer.getAttribution());
}
this.fire('layerremove', {layer: layer});
}
return this;
},
hasLayer: function (layer) {
var id = L.Util.stamp(layer);
return this._layers.hasOwnProperty(id);
},
invalidateSize: function () {
var oldSize = this.getSize();
this._sizeChanged = true;
if (this.options.maxBounds) {
this.setMaxBounds(this.options.maxBounds);
}
if (!this._loaded) {
return this;
}
this._rawPanBy(oldSize.subtract(this.getSize()).divideBy(2, true));
this.fire('move');
clearTimeout(this._sizeTimer);
this._sizeTimer = setTimeout(L.Util.bind(function () {
this.fire('moveend');
}, this), 200);
return this;
},
// public methods for getting map state
getCenter: function (unbounded) { // (Boolean)
var viewHalf = this.getSize().divideBy(2),
centerPoint = this._getTopLeftPoint().add(viewHalf);
return this.unproject(centerPoint, this._zoom, unbounded);
},
getZoom: function () {
return this._zoom;
},
getBounds: function () {
var bounds = this.getPixelBounds(),
sw = this.unproject(new L.Point(bounds.min.x, bounds.max.y), this._zoom, true),
ne = this.unproject(new L.Point(bounds.max.x, bounds.min.y), this._zoom, true);
return new L.LatLngBounds(sw, ne);
},
getMinZoom: function () {
var z1 = this.options.minZoom || 0,
z2 = this._layersMinZoom || 0,
z3 = this._boundsMinZoom || 0;
return Math.max(z1, z2, z3);
},
getMaxZoom: function () {
var z1 = isNaN(this.options.maxZoom) ? Infinity : this.options.maxZoom,
z2 = this._layersMaxZoom || Infinity;
return Math.min(z1, z2);
},
getBoundsZoom: function (bounds, inside) { // (LatLngBounds)
var size = this.getSize(),
zoom = this.options.minZoom || 0,
maxZoom = this.getMaxZoom(),
ne = bounds.getNorthEast(),
sw = bounds.getSouthWest(),
boundsSize,
nePoint,
swPoint,
zoomNotFound = true;
if (inside) {
zoom--;
}
do {
zoom++;
nePoint = this.project(ne, zoom);
swPoint = this.project(sw, zoom);
boundsSize = new L.Point(nePoint.x - swPoint.x, swPoint.y - nePoint.y);
if (!inside) {
zoomNotFound = (boundsSize.x <= size.x) && (boundsSize.y <= size.y);
} else {
zoomNotFound = (boundsSize.x < size.x) || (boundsSize.y < size.y);
}
} while (zoomNotFound && (zoom <= maxZoom));
if (zoomNotFound && inside) {
return null;
}
return inside ? zoom : zoom - 1;
},
getSize: function () {
if (!this._size || this._sizeChanged) {
this._size = new L.Point(this._container.clientWidth, this._container.clientHeight);
this._sizeChanged = false;
}
return this._size;
},
getPixelBounds: function () {
var topLeftPoint = this._getTopLeftPoint(),
size = this.getSize();
return new L.Bounds(topLeftPoint, topLeftPoint.add(size));
},
getPixelOrigin: function () {
return this._initialTopLeftPoint;
},
getPanes: function () {
return this._panes;
},
// conversion methods
mouseEventToContainerPoint: function (e) { // (MouseEvent)
return L.DomEvent.getMousePosition(e, this._container);
},
mouseEventToLayerPoint: function (e) { // (MouseEvent)
return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e));
},
mouseEventToLatLng: function (e) { // (MouseEvent)
return this.layerPointToLatLng(this.mouseEventToLayerPoint(e));
},
containerPointToLayerPoint: function (point) { // (Point)
return point.subtract(L.DomUtil.getPosition(this._mapPane));
},
layerPointToContainerPoint: function (point) { // (Point)
return point.add(L.DomUtil.getPosition(this._mapPane));
},
layerPointToLatLng: function (point) { // (Point)
return this.unproject(point.add(this._initialTopLeftPoint));
},
latLngToLayerPoint: function (latlng) { // (LatLng)
return this.project(latlng)._round()._subtract(this._initialTopLeftPoint);
},
project: function (latlng, zoom) { // (LatLng[, Number]) -> Point
zoom = (typeof zoom === 'undefined' ? this._zoom : zoom);
return this.options.crs.latLngToPoint(latlng, this.options.scale(zoom));
},
unproject: function (point, zoom, unbounded) { // (Point[, Number, Boolean]) -> LatLng
zoom = (typeof zoom === 'undefined' ? this._zoom : zoom);
return this.options.crs.pointToLatLng(point, this.options.scale(zoom), unbounded);
},
// private methods that modify map state
_initLayout: function () {
var container = this._container;
container.innerHTML = '';
container.className += ' leaflet-container';
if (this.options.fadeAnimation) {
container.className += ' leaflet-fade-anim';
}
var position = L.DomUtil.getStyle(container, 'position');
if (position !== 'absolute' && position !== 'relative') {
container.style.position = 'relative';
}
this._initPanes();
if (this._initControlPos) {
this._initControlPos();
}
},
_initPanes: function () {
var panes = this._panes = {};
this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container);
this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane);
this._objectsPane = panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane);
panes.shadowPane = this._createPane('leaflet-shadow-pane');
panes.overlayPane = this._createPane('leaflet-overlay-pane');
panes.markerPane = this._createPane('leaflet-marker-pane');
panes.popupPane = this._createPane('leaflet-popup-pane');
},
_createPane: function (className, container) {
return L.DomUtil.create('div', className, container || this._objectsPane);
},
_resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) {
var zoomChanged = (this._zoom !== zoom);
if (!afterZoomAnim) {
this.fire('movestart');
if (zoomChanged) {
this.fire('zoomstart');
}
}
this._zoom = zoom;
this._initialTopLeftPoint = this._getNewTopLeftPoint(center);
if (!preserveMapOffset) {
L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0));
} else {
var offset = L.DomUtil.getPosition(this._mapPane);
this._initialTopLeftPoint._add(offset);
}
this._tileLayersToLoad = this._tileLayersNum;
this.fire('viewreset', {hard: !preserveMapOffset});
this.fire('move');
if (zoomChanged || afterZoomAnim) {
this.fire('zoomend');
}
this.fire('moveend');
if (!this._loaded) {
this._loaded = true;
this.fire('load');
}
},
_initLayers: function (layers) {
this._layers = {};
var i, len;
for (i = 0, len = layers.length; i < len; i++) {
this.addLayer(layers[i]);
}
},
_initControls: function () {
if (this.options.zoomControl) {
this.addControl(new L.Control.Zoom());
}
if (this.options.attributionControl) {
this.attributionControl = new L.Control.Attribution();
this.addControl(this.attributionControl);
}
},
_rawPanBy: function (offset) {
var mapPaneOffset = L.DomUtil.getPosition(this._mapPane);
L.DomUtil.setPosition(this._mapPane, mapPaneOffset.subtract(offset));
},
// map events
_initEvents: function () {
L.DomEvent.addListener(this._container, 'click', this._onMouseClick, this);
var events = ['dblclick', 'mousedown', 'mouseenter', 'mouseleave', 'mousemove', 'contextmenu'];
var i, len;
for (i = 0, len = events.length; i < len; i++) {
L.DomEvent.addListener(this._container, events[i], this._fireMouseEvent, this);
}
if (this.options.trackResize) {
L.DomEvent.addListener(window, 'resize', this._onResize, this);
}
},
_onResize: function () {
L.Util.requestAnimFrame(this.invalidateSize, this, false, this._container);
},
_onMouseClick: function (e) {
if (!this._loaded || (this.dragging && this.dragging.moved())) {
return;
}
this.fire('pre' + e.type);
this._fireMouseEvent(e);
},
_fireMouseEvent: function (e) {
if (!this._loaded) {
return;
}
var type = e.type;
type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type));
if (!this.hasEventListeners(type)) {
return;
}
if (type === 'contextmenu') {
L.DomEvent.preventDefault(e);
}
this.fire(type, {
latlng: this.mouseEventToLatLng(e),
layerPoint: this.mouseEventToLayerPoint(e)
});
},
_initInteraction: function () {
var handlers = {
dragging: L.Map.Drag,
touchZoom: L.Map.TouchZoom,
doubleClickZoom: L.Map.DoubleClickZoom,
scrollWheelZoom: L.Map.ScrollWheelZoom,
boxZoom: L.Map.BoxZoom
};
var i;
for (i in handlers) {
if (handlers.hasOwnProperty(i) && handlers[i]) {
this[i] = new handlers[i](this);
if (this.options[i]) {
this[i].enable();
}
// TODO move enabling to handler contructor
}
}
},
_onTileLayerLoad: function () {
// clear scaled tiles after all new tiles are loaded (for performance)
this._tileLayersToLoad--;
if (this._tileLayersNum && !this._tileLayersToLoad && this._tileBg) {
clearTimeout(this._clearTileBgTimer);
this._clearTileBgTimer = setTimeout(L.Util.bind(this._clearTileBg, this), 500);
}
},
// private methods for getting map state
_getTopLeftPoint: function () {
if (!this._loaded) {
throw new Error('Set map center and zoom first.');
}
var offset = L.DomUtil.getPosition(this._mapPane);
return this._initialTopLeftPoint.subtract(offset);
},
_getNewTopLeftPoint: function (center) {
var viewHalf = this.getSize().divideBy(2);
return this.project(center).subtract(viewHalf).round();
},
_limitZoom: function (zoom) {
var min = this.getMinZoom();
var max = this.getMaxZoom();
return Math.max(min, Math.min(max, zoom));
}
});
L.Projection.Mercator = {
MAX_LATITUDE: 85.0840591556,
R_MINOR: 6356752.3142,
R_MAJOR: 6378137,
project: function (/*LatLng*/ latlng) /*-> Point*/ {
var d = L.LatLng.DEG_TO_RAD,
max = this.MAX_LATITUDE,
lat = Math.max(Math.min(max, latlng.lat), -max),
r = this.R_MAJOR,
r2 = this.R_MINOR,
x = latlng.lng * d * r,
y = lat * d,
tmp = r2 / r,
eccent = Math.sqrt(1.0 - tmp * tmp),
con = eccent * Math.sin(y);
con = Math.pow((1 - con) / (1 + con), eccent * 0.5);
var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con;
y = -r2 * Math.log(ts);
return new L.Point(x, y);
},
unproject: function (/*Point*/ point, /*Boolean*/ unbounded) /*-> LatLng*/ {
var d = L.LatLng.RAD_TO_DEG,
r = this.R_MAJOR,
r2 = this.R_MINOR,
lng = point.x * d / r,
tmp = r2 / r,
eccent = Math.sqrt(1 - (tmp * tmp)),
ts = Math.exp(- point.y / r2),
phi = (Math.PI / 2) - 2 * Math.atan(ts),
numIter = 15,
tol = 1e-7,
i = numIter,
dphi = 0.1,
con;
while ((Math.abs(dphi) > tol) && (--i > 0)) {
con = eccent * Math.sin(phi);
dphi = (Math.PI / 2) - 2 * Math.atan(ts * Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi;
phi += dphi;
}
return new L.LatLng(phi * d, lng, unbounded);
}
};
L.CRS.EPSG3395 = L.Util.extend({}, L.CRS, {
code: 'EPSG:3395',
projection: L.Projection.Mercator,
transformation: (function () {
var m = L.Projection.Mercator,
r = m.R_MAJOR,
r2 = m.R_MINOR;
return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5);
}())
});
/*
* L.TileLayer is used for standard xyz-numbered tile layers.
*/
L.TileLayer = L.Class.extend({
includes: L.Mixin.Events,
options: {
minZoom: 0,
maxZoom: 18,
tileSize: 256,
subdomains: 'abc',
errorTileUrl: '',
attribution: '',
opacity: 1,
scheme: 'xyz',
continuousWorld: false,
noWrap: false,
zoomOffset: 0,
zoomReverse: false,
unloadInvisibleTiles: L.Browser.mobile,
updateWhenIdle: L.Browser.mobile,
reuseTiles: false
},
initialize: function (url, options, urlParams) {
L.Util.setOptions(this, options);
this._url = url;
this._urlParams = urlParams;
if (typeof this.options.subdomains === 'string') {
this.options.subdomains = this.options.subdomains.split('');
}
},
onAdd: function (map, insertAtTheBottom) {
this._map = map;
this._insertAtTheBottom = insertAtTheBottom;
// create a container div for tiles
this._initContainer();
// create an image to clone for tiles
this._createTileProto();
// set up events
map.on('viewreset', this._resetCallback, this);
if (this.options.updateWhenIdle) {
map.on('moveend', this._update, this);
} else {
this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this);
map.on('move', this._limitedUpdate, this);
}
this._reset();
this._update();
},
onRemove: function (map) {
this._map.getPanes().tilePane.removeChild(this._container);
this._container = null;
this._map.off('viewreset', this._resetCallback, this);
if (this.options.updateWhenIdle) {
this._map.off('moveend', this._update, this);
} else {
this._map.off('move', this._limitedUpdate, this);
}
},
getAttribution: function () {
return this.options.attribution;
},
setOpacity: function (opacity) {
this.options.opacity = opacity;
this._setOpacity(opacity);
// stupid webkit hack to force redrawing of tiles
if (L.Browser.webkit) {
for (var i in this._tiles) {
if (this._tiles.hasOwnProperty(i)) {
this._tiles[i].style.webkitTransform += ' translate(0,0)';
}
}
}
},
_setOpacity: function (opacity) {
if (opacity < 1) {
L.DomUtil.setOpacity(this._container, opacity);
}
},
_initContainer: function () {
var tilePane = this._map.getPanes().tilePane,
first = tilePane.firstChild;
if (!this._container || tilePane.empty) {
this._container = L.DomUtil.create('div', 'leaflet-layer');
if (this._insertAtTheBottom && first) {
tilePane.insertBefore(this._container, first);
} else {
tilePane.appendChild(this._container);
}
this._setOpacity(this.options.opacity);
}
},
_resetCallback: function (e) {
this._reset(e.hard);
},
_reset: function (clearOldContainer) {
var key;
for (key in this._tiles) {
if (this._tiles.hasOwnProperty(key)) {
this.fire("tileunload", {tile: this._tiles[key]});
}
}
this._tiles = {};
if (this.options.reuseTiles) {
this._unusedTiles = [];
}
if (clearOldContainer && this._container) {
this._container.innerHTML = "";
}
this._initContainer();
},
_update: function () {
var bounds = this._map.getPixelBounds(),
zoom = this._map.getZoom(),
tileSize = this.options.tileSize;
if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
return;
}
var nwTilePoint = new L.Point(
Math.floor(bounds.min.x / tileSize),
Math.floor(bounds.min.y / tileSize)),
seTilePoint = new L.Point(
Math.floor(bounds.max.x / tileSize),
Math.floor(bounds.max.y / tileSize)),
tileBounds = new L.Bounds(nwTilePoint, seTilePoint);
this._addTilesFromCenterOut(tileBounds);
if (this.options.unloadInvisibleTiles || this.options.reuseTiles) {
this._removeOtherTiles(tileBounds);
}
},
_addTilesFromCenterOut: function (bounds) {
var queue = [],
center = bounds.getCenter();
for (var j = bounds.min.y; j <= bounds.max.y; j++) {
for (var i = bounds.min.x; i <= bounds.max.x; i++) {
if ((i + ':' + j) in this._tiles) {
continue;
}
queue.push(new L.Point(i, j));
}
}
// load tiles in order of their distance to center
queue.sort(function (a, b) {
return a.distanceTo(center) - b.distanceTo(center);
});
var fragment = document.createDocumentFragment();
this._tilesToLoad = queue.length;
for (var k = 0, len = this._tilesToLoad; k < len; k++) {
this._addTile(queue[k], fragment);
}
this._container.appendChild(fragment);
},
_removeOtherTiles: function (bounds) {
var kArr, x, y, key, tile;
for (key in this._tiles) {
if (this._tiles.hasOwnProperty(key)) {
kArr = key.split(':');
x = parseInt(kArr[0], 10);
y = parseInt(kArr[1], 10);
// remove tile if it's out of bounds
if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
tile = this._tiles[key];
this.fire("tileunload", {tile: tile, url: tile.src});
if (tile.parentNode === this._container) {
this._container.removeChild(tile);
}
if (this.options.reuseTiles) {
this._unusedTiles.push(this._tiles[key]);
}
tile.src = 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=';
delete this._tiles[key];
}
}
}
},
_addTile: function (tilePoint, container) {
var tilePos = this._getTilePos(tilePoint),
zoom = this._map.getZoom(),
key = tilePoint.x + ':' + tilePoint.y,
tileLimit = Math.pow(2, this._getOffsetZoom(zoom));
// wrap tile coordinates
if (!this.options.continuousWorld) {
if (!this.options.noWrap) {
tilePoint.x = ((tilePoint.x % tileLimit) + tileLimit) % tileLimit;
} else if (tilePoint.x < 0 || tilePoint.x >= tileLimit) {
this._tilesToLoad--;
return;
}
if (tilePoint.y < 0 || tilePoint.y >= tileLimit) {
this._tilesToLoad--;
return;
}
}
// get unused tile - or create a new tile
var tile = this._getTile();
L.DomUtil.setPosition(tile, tilePos);
this._tiles[key] = tile;
if (this.options.scheme === 'tms') {
tilePoint.y = tileLimit - tilePoint.y - 1;
}
this._loadTile(tile, tilePoint, zoom);
container.appendChild(tile);
},
_getOffsetZoom: function (zoom) {
zoom = this.options.zoomReverse ? this.options.maxZoom - zoom : zoom;
return zoom + this.options.zoomOffset;
},
_getTilePos: function (tilePoint) {
var origin = this._map.getPixelOrigin(),
tileSize = this.options.tileSize;
return tilePoint.multiplyBy(tileSize).subtract(origin);
},
// image-specific code (override to implement e.g. Canvas or SVG tile layer)
getTileUrl: function (tilePoint, zoom) {
var subdomains = this.options.subdomains,
s = this.options.subdomains[(tilePoint.x + tilePoint.y) % subdomains.length];
return L.Util.template(this._url, L.Util.extend({
s: s,
z: this._getOffsetZoom(zoom),
x: tilePoint.x,
y: tilePoint.y
}, this._urlParams));
},
_createTileProto: function () {
this._tileImg = L.DomUtil.create('img', 'leaflet-tile');
this._tileImg.galleryimg = 'no';
var tileSize = this.options.tileSize;
this._tileImg.style.width = tileSize + 'px';
this._tileImg.style.height = tileSize + 'px';
},
_getTile: function () {
if (this.options.reuseTiles && this._unusedTiles.length > 0) {
var tile = this._unusedTiles.pop();
this._resetTile(tile);
return tile;
}
return this._createTile();
},
_resetTile: function (tile) {
// Override if data stored on a tile needs to be cleaned up before reuse
},
_createTile: function () {
var tile = this._tileImg.cloneNode(false);
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
return tile;
},
_loadTile: function (tile, tilePoint, zoom) {
tile._layer = this;
tile.onload = this._tileOnLoad;
tile.onerror = this._tileOnError;
tile.src = this.getTileUrl(tilePoint, zoom);
},
_tileOnLoad: function (e) {
var layer = this._layer;
this.className += ' leaflet-tile-loaded';
layer.fire('tileload', {tile: this, url: this.src});
layer._tilesToLoad--;
if (!layer._tilesToLoad) {
layer.fire('load');
}
},
_tileOnError: function (e) {
var layer = this._layer;
layer.fire('tileerror', {tile: this, url: this.src});
var newUrl = layer.options.errorTileUrl;
if (newUrl) {
this.src = newUrl;
}
}
});
L.TileLayer.WMS = L.TileLayer.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
layers: '',
styles: '',
format: 'image/jpeg',
transparent: false
},
initialize: function (/*String*/ url, /*Object*/ options) {
this._url = url;
this.wmsParams = L.Util.extend({}, this.defaultWmsParams);
this.wmsParams.width = this.wmsParams.height = this.options.tileSize;
for (var i in options) {
// all keys that are not TileLayer options go to WMS params
if (!this.options.hasOwnProperty(i)) {
this.wmsParams[i] = options[i];
}
}
L.Util.setOptions(this, options);
},
onAdd: function (map) {
var projectionKey = (parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs');
this.wmsParams[projectionKey] = map.options.crs.code;
L.TileLayer.prototype.onAdd.call(this, map);
},
getTileUrl: function (/*Point*/ tilePoint, /*Number*/ zoom)/*-> String*/ {
var tileSize = this.options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)),
nwMap = this._map.unproject(nwPoint, this._zoom, true),
seMap = this._map.unproject(sePoint, this._zoom, true),
nw = this._map.options.crs.project(nwMap),
se = this._map.options.crs.project(seMap),
bbox = [nw.x, se.y, se.x, nw.y].join(',');
return this._url + L.Util.getParamString(this.wmsParams) + "&bbox=" + bbox;
}
});
L.TileLayer.Canvas = L.TileLayer.extend({
options: {
async: false
},
initialize: function (options) {
L.Util.setOptions(this, options);
},
redraw: function () {
for (var i in this._tiles) {
var tile = this._tiles[i];
this._redrawTile(tile);
}
},
_redrawTile: function (tile) {
this.drawTile(tile, tile._tilePoint, tile._zoom);
},
_createTileProto: function () {
this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile');
var tileSize = this.options.tileSize;
this._canvasProto.width = tileSize;
this._canvasProto.height = tileSize;
},
_createTile: function () {
var tile = this._canvasProto.cloneNode(false);
tile.onselectstart = tile.onmousemove = L.Util.falseFn;
return tile;
},
_loadTile: function (tile, tilePoint, zoom) {
tile._layer = this;
tile._tilePoint = tilePoint;
tile._zoom = zoom;
this.drawTile(tile, tilePoint, zoom);
if (!this.options.async) {
this.tileDrawn(tile);
}
},
drawTile: function (tile, tilePoint, zoom) {
// override with rendering code
},
tileDrawn: function (tile) {
this._tileOnLoad.call(tile);
}
});
L.ImageOverlay = L.Class.extend({
includes: L.Mixin.Events,
initialize: function (/*String*/ url, /*LatLngBounds*/ bounds) {
this._url = url;
this._bounds = bounds;
},
onAdd: function (map) {
this._map = map;
if (!this._image) {
this._initImage();
}
map.getPanes().overlayPane.appendChild(this._image);
map.on('viewreset', this._reset, this);
this._reset();
},
onRemove: function (map) {
map.getPanes().overlayPane.removeChild(this._image);
map.off('viewreset', this._reset, this);
},
_initImage: function () {
this._image = L.DomUtil.create('img', 'leaflet-image-layer');
this._image.style.visibility = 'hidden';
//TODO opacity option
//TODO createImage util method to remove duplication
L.Util.extend(this._image, {
galleryimg: 'no',
onselectstart: L.Util.falseFn,
onmousemove: L.Util.falseFn,
onload: L.Util.bind(this._onImageLoad, this),
src: this._url
});
},
_reset: function () {
var topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()),
bottomRight = this._map.latLngToLayerPoint(this._bounds.getSouthEast()),
size = bottomRight.subtract(topLeft);
L.DomUtil.setPosition(this._image, topLeft);
this._image.style.width = size.x + 'px';
this._image.style.height = size.y + 'px';
},
_onImageLoad: function () {
this._image.style.visibility = '';
this.fire('load');
}
});
L.Icon = L.Class.extend({
iconUrl: L.ROOT_URL + 'images/marker.png',
shadowUrl: L.ROOT_URL + 'images/marker-shadow.png',
iconSize: new L.Point(25, 41),
shadowSize: new L.Point(41, 41),
iconAnchor: new L.Point(13, 41),
popupAnchor: new L.Point(0, -33),
initialize: function (iconUrl) {
if (iconUrl) {
this.iconUrl = iconUrl;
}
},
createIcon: function () {
return this._createIcon('icon');
},
createShadow: function () {
return this._createIcon('shadow');
},
_createIcon: function (name) {
var size = this[name + 'Size'],
src = this[name + 'Url'];
if (!src && name === 'shadow') {
return null;
}
var img;
if (!src) {
img = this._createDiv();
}
else {
img = this._createImg(src);
}
img.className = 'leaflet-marker-' + name;
img.style.marginLeft = (-this.iconAnchor.x) + 'px';
img.style.marginTop = (-this.iconAnchor.y) + 'px';
if (size) {
img.style.width = size.x + 'px';
img.style.height = size.y + 'px';
}
return img;
},
_createImg: function (src) {
var el;
if (!L.Browser.ie6) {
el = document.createElement('img');
el.src = src;
} else {
el = document.createElement('div');
el.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")';
}
return el;
},
_createDiv: function () {
return document.createElement('div');
}
});
/*
* L.Marker is used to display clickable/draggable icons on the map.
*/
L.Marker = L.Class.extend({
includes: L.Mixin.Events,
options: {
icon: new L.Icon(),
title: '',
clickable: true,
draggable: false,
zIndexOffset: 0
},
initialize: function (latlng, options) {
L.Util.setOptions(this, options);
this._latlng = latlng;
},
onAdd: function (map) {
this._map = map;
this._initIcon();
map.on('viewreset', this._reset, this);
this._reset();
},
onRemove: function (map) {
this._removeIcon();
// TODO move to Marker.Popup.js
if (this.closePopup) {
this.closePopup();
}
this._map = null;
map.off('viewreset', this._reset, this);
},
getLatLng: function () {
return this._latlng;
},
setLatLng: function (latlng) {
this._latlng = latlng;
if (this._icon) {
this._reset();
if (this._popup) {
this._popup.setLatLng(this._latlng);
}
}
},
setZIndexOffset: function (offset) {
this.options.zIndexOffset = offset;
if (this._icon) {
this._reset();
}
},
setIcon: function (icon) {
if (this._map) {
this._removeIcon();
}
this.options.icon = icon;
if (this._map) {
this._initIcon();
this._reset();
}
},
_initIcon: function () {
if (!this._icon) {
this._icon = this.options.icon.createIcon();
if (this.options.title) {
this._icon.title = this.options.title;
}
this._initInteraction();
}
if (!this._shadow) {
this._shadow = this.options.icon.createShadow();
}
this._map._panes.markerPane.appendChild(this._icon);
if (this._shadow) {
this._map._panes.shadowPane.appendChild(this._shadow);
}
},
_removeIcon: function () {
this._map._panes.markerPane.removeChild(this._icon);
if (this._shadow) {
this._map._panes.shadowPane.removeChild(this._shadow);
}
this._icon = this._shadow = null;
},
_reset: function () {
var pos = this._map.latLngToLayerPoint(this._latlng).round();
L.DomUtil.setPosition(this._icon, pos);
if (this._shadow) {
L.DomUtil.setPosition(this._shadow, pos);
}
this._icon.style.zIndex = pos.y + this.options.zIndexOffset;
},
_initInteraction: function () {
if (this.options.clickable) {
this._icon.className += ' leaflet-clickable';
L.DomEvent.addListener(this._icon, 'click', this._onMouseClick, this);
var events = ['dblclick', 'mousedown', 'mouseover', 'mouseout'];
for (var i = 0; i < events.length; i++) {
L.DomEvent.addListener(this._icon, events[i], this._fireMouseEvent, this);
}
}
if (L.Handler.MarkerDrag) {
this.dragging = new L.Handler.MarkerDrag(this);
if (this.options.draggable) {
this.dragging.enable();
}
}
},
_onMouseClick: function (e) {
L.DomEvent.stopPropagation(e);
if (this.dragging && this.dragging.moved()) { return; }
this.fire(e.type);
},
_fireMouseEvent: function (e) {
this.fire(e.type);
L.DomEvent.stopPropagation(e);
}
});
L.Popup = L.Class.extend({
includes: L.Mixin.Events,
options: {
minWidth: 50,
maxWidth: 300,
autoPan: true,
closeButton: true,
offset: new L.Point(0, 2),
autoPanPadding: new L.Point(5, 5),
className: ''
},
initialize: function (options, source) {
L.Util.setOptions(this, options);
this._source = source;
},
onAdd: function (map) {
this._map = map;
if (!this._container) {
this._initLayout();
}
this._updateContent();
this._container.style.opacity = '0';
this._map._panes.popupPane.appendChild(this._container);
this._map.on('viewreset', this._updatePosition, this);
if (this._map.options.closePopupOnClick) {
this._map.on('preclick', this._close, this);
}
this._update();
this._container.style.opacity = '1'; //TODO fix ugly opacity hack
this._opened = true;
},
onRemove: function (map) {
map._panes.popupPane.removeChild(this._container);
L.Util.falseFn(this._container.offsetWidth);
map.off('viewreset', this._updatePosition, this);
map.off('click', this._close, this);
this._container.style.opacity = '0';
this._opened = false;
},
setLatLng: function (latlng) {
this._latlng = latlng;
if (this._opened) {
this._update();
}
return this;
},
setContent: function (content) {
this._content = content;
if (this._opened) {
this._update();
}
return this;
},
_close: function () {
if (this._opened) {
this._map.closePopup();
}
},
_initLayout: function () {
this._container = L.DomUtil.create('div', 'leaflet-popup ' + this.options.className);
if (this.options.closeButton) {
this._closeButton = L.DomUtil.create('a', 'leaflet-popup-close-button', this._container);
this._closeButton.href = '#close';
L.DomEvent.addListener(this._closeButton, 'click', this._onCloseButtonClick, this);
}
this._wrapper = L.DomUtil.create('div', 'leaflet-popup-content-wrapper', this._container);
L.DomEvent.disableClickPropagation(this._wrapper);
this._contentNode = L.DomUtil.create('div', 'leaflet-popup-content', this._wrapper);
this._tipContainer = L.DomUtil.create('div', 'leaflet-popup-tip-container', this._container);
this._tip = L.DomUtil.create('div', 'leaflet-popup-tip', this._tipContainer);
},
_update: function () {
this._container.style.visibility = 'hidden';
this._updateContent();
this._updateLayout();
this._updatePosition();
this._container.style.visibility = '';
this._adjustPan();
},
_updateContent: function () {
if (!this._content) {
return;
}
if (typeof this._content === 'string') {
this._contentNode.innerHTML = this._content;
} else {
this._contentNode.innerHTML = '';
this._contentNode.appendChild(this._content);
}
},
_updateLayout: function () {
this._container.style.width = '';
this._container.style.whiteSpace = 'nowrap';
var width = this._container.offsetWidth;
this._container.style.width = (width > this.options.maxWidth ?
this.options.maxWidth : (width < this.options.minWidth ? this.options.minWidth : width)) + 'px';
this._container.style.whiteSpace = '';
this._containerWidth = this._container.offsetWidth;
},
_updatePosition: function () {
var pos = this._map.latLngToLayerPoint(this._latlng);
this._containerBottom = -pos.y - this.options.offset.y;
this._containerLeft = pos.x - Math.round(this._containerWidth / 2) + this.options.offset.x;
this._container.style.bottom = this._containerBottom + 'px';
this._container.style.left = this._containerLeft + 'px';
},
_adjustPan: function () {
if (!this.options.autoPan) {
return;
}
var containerHeight = this._container.offsetHeight,
layerPos = new L.Point(
this._containerLeft,
-containerHeight - this._containerBottom),
containerPos = this._map.layerPointToContainerPoint(layerPos),
adjustOffset = new L.Point(0, 0),
padding = this.options.autoPanPadding,
size = this._map.getSize();
if (containerPos.x < 0) {
adjustOffset.x = containerPos.x - padding.x;
}
if (containerPos.x + this._containerWidth > size.x) {
adjustOffset.x = containerPos.x + this._containerWidth - size.x + padding.x;
}
if (containerPos.y < 0) {
adjustOffset.y = containerPos.y - padding.y;
}
if (containerPos.y + containerHeight > size.y) {
adjustOffset.y = containerPos.y + containerHeight - size.y + padding.y;
}
if (adjustOffset.x || adjustOffset.y) {
this._map.panBy(adjustOffset);
}
},
_onCloseButtonClick: function (e) {
this._close();
L.DomEvent.stop(e);
}
});
/*
* Popup extension to L.Marker, adding openPopup & bindPopup methods.
*/
L.Marker.include({
openPopup: function () {
this._popup.setLatLng(this._latlng);
if (this._map) {
this._map.openPopup(this._popup);
}
return this;
},
closePopup: function () {
if (this._popup) {
this._popup._close();
}
return this;
},
bindPopup: function (content, options) {
options = L.Util.extend({offset: this.options.icon.popupAnchor}, options);
if (!this._popup) {
this.on('click', this.openPopup, this);
}
this._popup = new L.Popup(options, this);
this._popup.setContent(content);
return this;
},
unbindPopup: function () {
if (this._popup) {
this._popup = null;
this.off('click', this.openPopup);
}
return this;
}
});
L.Map.include({
openPopup: function (popup) {
this.closePopup();
this._popup = popup;
this.addLayer(popup);
this.fire('popupopen', { popup: this._popup });
return this;
},
closePopup: function () {
if (this._popup) {
this.removeLayer(this._popup);
this.fire('popupclose', { popup: this._popup });
this._popup = null;
}
return this;
}
});
/*
* L.LayerGroup is a class to combine several layers so you can manipulate the group (e.g. add/remove it) as one layer.
*/
L.LayerGroup = L.Class.extend({
initialize: function (layers) {
this._layers = {};
if (layers) {
for (var i = 0, len = layers.length; i < len; i++) {
this.addLayer(layers[i]);
}
}
},
addLayer: function (layer) {
var id = L.Util.stamp(layer);
this._layers[id] = layer;
if (this._map) {
this._map.addLayer(layer);
}
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
delete this._layers[id];
if (this._map) {
this._map.removeLayer(layer);
}
return this;
},
clearLayers: function () {
this._iterateLayers(this.removeLayer, this);
return this;
},
invoke: function (methodName) {
var args = Array.prototype.slice.call(arguments, 1),
i, layer;
for (i in this._layers) {
if (this._layers.hasOwnProperty(i)) {
layer = this._layers[i];
if (layer[methodName]) {
layer[methodName].apply(layer, args);
}
}
}
return this;
},
onAdd: function (map) {
this._map = map;
this._iterateLayers(map.addLayer, map);
},
onRemove: function (map) {
this._iterateLayers(map.removeLayer, map);
delete this._map;
},
_iterateLayers: function (method, context) {
for (var i in this._layers) {
if (this._layers.hasOwnProperty(i)) {
method.call(context, this._layers[i]);
}
}
}
});
/*
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and bindPopup method shared between a group of layers.
*/
L.FeatureGroup = L.LayerGroup.extend({
includes: L.Mixin.Events,
addLayer: function (layer) {
this._initEvents(layer);
L.LayerGroup.prototype.addLayer.call(this, layer);
if (this._popupContent && layer.bindPopup) {
layer.bindPopup(this._popupContent);
}
},
bindPopup: function (content) {
this._popupContent = content;
return this.invoke('bindPopup', content);
},
setStyle: function (style) {
return this.invoke('setStyle', style);
},
_events: ['click', 'dblclick', 'mouseover', 'mouseout'],
_initEvents: function (layer) {
for (var i = 0, len = this._events.length; i < len; i++) {
layer.on(this._events[i], this._propagateEvent, this);
}
},
_propagateEvent: function (e) {
e.layer = e.target;
e.target = this;
this.fire(e.type, e);
}
});
/*
* L.Path is a base class for rendering vector paths on a map. It's inherited by Polyline, Circle, etc.
*/
L.Path = L.Class.extend({
includes: [L.Mixin.Events],
statics: {
// how much to extend the clip area around the map view
// (relative to its size, e.g. 0.5 is half the screen in each direction)
CLIP_PADDING: 0.5
},
options: {
stroke: true,
color: '#0033ff',
weight: 5,
opacity: 0.5,
fill: false,
fillColor: null, //same as color by default
fillOpacity: 0.2,
clickable: true,
// TODO remove this, as all paths now update on moveend
updateOnMoveEnd: true
},
initialize: function (options) {
L.Util.setOptions(this, options);
},
onAdd: function (map) {
this._map = map;
this._initElements();
this._initEvents();
this.projectLatlngs();
this._updatePath();
map.on('viewreset', this.projectLatlngs, this);
this._updateTrigger = this.options.updateOnMoveEnd ? 'moveend' : 'viewreset';
map.on(this._updateTrigger, this._updatePath, this);
},
onRemove: function (map) {
this._map = null;
map._pathRoot.removeChild(this._container);
map.off('viewreset', this.projectLatlngs, this);
map.off(this._updateTrigger, this._updatePath, this);
},
projectLatlngs: function () {
// do all projection stuff here
},
setStyle: function (style) {
L.Util.setOptions(this, style);
if (this._container) {
this._updateStyle();
}
return this;
},
_redraw: function () {
if (this._map) {
this.projectLatlngs();
this._updatePath();
}
}
});
L.Map.include({
_updatePathViewport: function () {
var p = L.Path.CLIP_PADDING,
size = this.getSize(),
//TODO this._map._getMapPanePos()
panePos = L.DomUtil.getPosition(this._mapPane),
min = panePos.multiplyBy(-1).subtract(size.multiplyBy(p)),
max = min.add(size.multiplyBy(1 + p * 2));
this._pathViewport = new L.Bounds(min, max);
}
});
L.Path.SVG_NS = 'http://www.w3.org/2000/svg';
L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect);
L.Path = L.Path.extend({
statics: {
SVG: L.Browser.svg,
_createElement: function (name) {
return document.createElementNS(L.Path.SVG_NS, name);
}
},
getPathString: function () {
// form path string here
},
_initElements: function () {
this._map._initPathRoot();
this._initPath();
this._initStyle();
},
_initPath: function () {
this._container = L.Path._createElement('g');
this._path = L.Path._createElement('path');
this._container.appendChild(this._path);
this._map._pathRoot.appendChild(this._container);
},
_initStyle: function () {
if (this.options.stroke) {
this._path.setAttribute('stroke-linejoin', 'round');
this._path.setAttribute('stroke-linecap', 'round');
}
if (this.options.fill) {
this._path.setAttribute('fill-rule', 'evenodd');
} else {
this._path.setAttribute('fill', 'none');
}
this._updateStyle();
},
_updateStyle: function () {
if (this.options.stroke) {
this._path.setAttribute('stroke', this.options.color);
this._path.setAttribute('stroke-opacity', this.options.opacity);
this._path.setAttribute('stroke-width', this.options.weight);
}
if (this.options.fill) {
this._path.setAttribute('fill', this.options.fillColor || this.options.color);
this._path.setAttribute('fill-opacity', this.options.fillOpacity);
}
},
_updatePath: function () {
var str = this.getPathString();
if (!str) {
// fix webkit empty string parsing bug
str = 'M0 0';
}
this._path.setAttribute('d', str);
},
// TODO remove duplication with L.Map
_initEvents: function () {
if (this.options.clickable) {
if (!L.Browser.vml) {
this._path.setAttribute('class', 'leaflet-clickable');
}
L.DomEvent.addListener(this._container, 'click', this._onMouseClick, this);
var events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'mousemove'];
for (var i = 0; i < events.length; i++) {
L.DomEvent.addListener(this._container, events[i], this._fireMouseEvent, this);
}
}
},
_onMouseClick: function (e) {
if (this._map.dragging && this._map.dragging.moved()) {
return;
}
this._fireMouseEvent(e);
},
_fireMouseEvent: function (e) {
if (!this.hasEventListeners(e.type)) {
return;
}
this.fire(e.type, {
latlng: this._map.mouseEventToLatLng(e),
layerPoint: this._map.mouseEventToLayerPoint(e)
});
L.DomEvent.stopPropagation(e);
}
});
L.Map.include({
_initPathRoot: function () {
if (!this._pathRoot) {
this._pathRoot = L.Path._createElement('svg');
this._panes.overlayPane.appendChild(this._pathRoot);
this.on('moveend', this._updateSvgViewport);
this._updateSvgViewport();
}
},
_updateSvgViewport: function () {
this._updatePathViewport();
var vp = this._pathViewport,
min = vp.min,
max = vp.max,
width = max.x - min.x,
height = max.y - min.y,
root = this._pathRoot,
pane = this._panes.overlayPane;
// Hack to make flicker on drag end on mobile webkit less irritating
// Unfortunately I haven't found a good workaround for this yet
if (L.Browser.webkit) {
pane.removeChild(root);
}
L.DomUtil.setPosition(root, min);
root.setAttribute('width', width);
root.setAttribute('height', height);
root.setAttribute('viewBox', [min.x, min.y, width, height].join(' '));
if (L.Browser.webkit) {
pane.appendChild(root);
}
}
});
/*
* Popup extension to L.Path (polylines, polygons, circles), adding bindPopup method.
*/
L.Path.include({
bindPopup: function (content, options) {
if (!this._popup || this._popup.options !== options) {
this._popup = new L.Popup(options, this);
}
this._popup.setContent(content);
if (!this._openPopupAdded) {
this.on('click', this._openPopup, this);
this._openPopupAdded = true;
}
return this;
},
_openPopup: function (e) {
this._popup.setLatLng(e.latlng);
this._map.openPopup(this._popup);
}
});
/*
* Vector rendering for IE6-8 through VML.
* Thanks to Dmitry Baranovsky and his Raphael library for inspiration!
*/
L.Browser.vml = (function () {
var d = document.createElement('div'), s;
d.innerHTML = '';
s = d.firstChild;
s.style.behavior = 'url(#default#VML)';
return (s && (typeof s.adj === 'object'));
}());
L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({
statics: {
VML: true,
CLIP_PADDING: 0.02,
_createElement: (function () {
try {
document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml');
return function (name) {
return document.createElement('');
};
} catch (e) {
return function (name) {
return document.createElement('<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">');
};
}
}())
},
_initPath: function () {
this._container = L.Path._createElement('shape');
this._container.className += ' leaflet-vml-shape' +
(this.options.clickable ? ' leaflet-clickable' : '');
this._container.coordsize = '1 1';
this._path = L.Path._createElement('path');
this._container.appendChild(this._path);
this._map._pathRoot.appendChild(this._container);
},
_initStyle: function () {
if (this.options.stroke) {
this._stroke = L.Path._createElement('stroke');
this._stroke.endcap = 'round';
this._container.appendChild(this._stroke);
} else {
this._container.stroked = false;
}
if (this.options.fill) {
this._container.filled = true;
this._fill = L.Path._createElement('fill');
this._container.appendChild(this._fill);
} else {
this._container.filled = false;
}
this._updateStyle();
},
_updateStyle: function () {
if (this.options.stroke) {
this._stroke.weight = this.options.weight + 'px';
this._stroke.color = this.options.color;
this._stroke.opacity = this.options.opacity;
}
if (this.options.fill) {
this._fill.color = this.options.fillColor || this.options.color;
this._fill.opacity = this.options.fillOpacity;
}
},
_updatePath: function () {
this._container.style.display = 'none';
this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug
this._container.style.display = '';
}
});
L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : {
_initPathRoot: function () {
if (!this._pathRoot) {
this._pathRoot = document.createElement('div');
this._pathRoot.className = 'leaflet-vml-container';
this._panes.overlayPane.appendChild(this._pathRoot);
this.on('moveend', this._updatePathViewport);
this._updatePathViewport();
}
}
});
/*
* Vector rendering for all browsers that support canvas.
*/
L.Browser.canvas = (function () {
return !!document.createElement('canvas').getContext;
}());
L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({
statics: {
//CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value
CANVAS: true,
SVG: false
},
options: {
updateOnMoveEnd: true
},
_initElements: function () {
this._map._initPathRoot();
this._ctx = this._map._canvasCtx;
},
_updateStyle: function () {
if (this.options.stroke) {
this._ctx.lineWidth = this.options.weight;
this._ctx.strokeStyle = this.options.color;
}
if (this.options.fill) {
this._ctx.fillStyle = this.options.fillColor || this.options.color;
}
},
_drawPath: function () {
var i, j, len, len2, point, drawMethod;
this._ctx.beginPath();
for (i = 0, len = this._parts.length; i < len; i++) {
for (j = 0, len2 = this._parts[i].length; j < len2; j++) {
point = this._parts[i][j];
drawMethod = (j === 0 ? 'move' : 'line') + 'To';
this._ctx[drawMethod](point.x, point.y);
}
// TODO refactor ugly hack
if (this instanceof L.Polygon) {
this._ctx.closePath();
}
}
},
_checkIfEmpty: function () {
return !this._parts.length;
},
_updatePath: function () {
if (this._checkIfEmpty()) {
return;
}
this._drawPath();
this._ctx.save();
this._updateStyle();
var opacity = this.options.opacity,
fillOpacity = this.options.fillOpacity;
if (this.options.fill) {
if (fillOpacity < 1) {
this._ctx.globalAlpha = fillOpacity;
}
this._ctx.fill();
}
if (this.options.stroke) {
if (opacity < 1) {
this._ctx.globalAlpha = opacity;
}
this._ctx.stroke();
}
this._ctx.restore();
// TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature
},
_initEvents: function () {
if (this.options.clickable) {
// TODO hand cursor
// TODO mouseover, mouseout, dblclick
this._map.on('click', this._onClick, this);
}
},
_onClick: function (e) {
if (this._containsPoint(e.layerPoint)) {
this.fire('click', e);
}
},
onRemove: function (map) {
map.off('viewreset', this._projectLatlngs, this);
map.off(this._updateTrigger, this._updatePath, this);
map.fire(this._updateTrigger);
}
});
L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : {
_initPathRoot: function () {
var root = this._pathRoot,
ctx;
if (!root) {
root = this._pathRoot = document.createElement("canvas");
root.style.position = 'absolute';
ctx = this._canvasCtx = root.getContext('2d');
ctx.lineCap = "round";
ctx.lineJoin = "round";
this._panes.overlayPane.appendChild(root);
this.on('moveend', this._updateCanvasViewport);
this._updateCanvasViewport();
}
},
_updateCanvasViewport: function () {
this._updatePathViewport();
var vp = this._pathViewport,
min = vp.min,
size = vp.max.subtract(min),
root = this._pathRoot;
//TODO check if it's works properly on mobile webkit
L.DomUtil.setPosition(root, min);
root.width = size.x;
root.height = size.y;
root.getContext('2d').translate(-min.x, -min.y);
}
});
/*
* L.LineUtil contains different utility functions for line segments
* and polylines (clipping, simplification, distances, etc.)
*/
L.LineUtil = {
// Simplify polyline with vertex reduction and Douglas-Peucker simplification.
// Improves rendering performance dramatically by lessening the number of points to draw.
simplify: function (/*Point[]*/ points, /*Number*/ tolerance) {
if (!tolerance || !points.length) {
return points.slice();
}
var sqTolerance = tolerance * tolerance;
// stage 1: vertex reduction
points = this._reducePoints(points, sqTolerance);
// stage 2: Douglas-Peucker simplification
points = this._simplifyDP(points, sqTolerance);
return points;
},
// distance from a point to a segment between two points
pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true));
},
closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) {
return this._sqClosestPointOnSegment(p, p1, p2);
},
// Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm
_simplifyDP: function (points, sqTolerance) {
var len = points.length,
ArrayConstructor = typeof Uint8Array !== 'undefined' ? Uint8Array : Array,
markers = new ArrayConstructor(len);
markers[0] = markers[len - 1] = 1;
this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1);
var i,
newPoints = [];
for (i = 0; i < len; i++) {
if (markers[i]) {
newPoints.push(points[i]);
}
}
return newPoints;
},
_simplifyDPStep: function (points, markers, sqTolerance, first, last) {
var maxSqDist = 0,
index, i, sqDist;
for (i = first + 1; i <= last - 1; i++) {
sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true);
if (sqDist > maxSqDist) {
index = i;
maxSqDist = sqDist;
}
}
if (maxSqDist > sqTolerance) {
markers[index] = 1;
this._simplifyDPStep(points, markers, sqTolerance, first, index);
this._simplifyDPStep(points, markers, sqTolerance, index, last);
}
},
// reduce points that are too close to each other to a single point
_reducePoints: function (points, sqTolerance) {
var reducedPoints = [points[0]];
for (var i = 1, prev = 0, len = points.length; i < len; i++) {
if (this._sqDist(points[i], points[prev]) > sqTolerance) {
reducedPoints.push(points[i]);
prev = i;
}
}
if (prev < len - 1) {
reducedPoints.push(points[len - 1]);
}
return reducedPoints;
},
/*jshint bitwise:false */ // temporarily allow bitwise oprations
// Cohen-Sutherland line clipping algorithm.
// Used to avoid rendering parts of a polyline that are not currently visible.
clipSegment: function (a, b, bounds, useLastCode) {
var min = bounds.min,
max = bounds.max;
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds),
codeB = this._getBitCode(b, bounds);
// save 2nd code to avoid calculating it on the next segment
this._lastCode = codeB;
while (true) {
// if a,b is inside the clip window (trivial accept)
if (!(codeA | codeB)) {
return [a, b];
// if a,b is outside the clip window (trivial reject)
} else if (codeA & codeB) {
return false;
// other cases
} else {
var codeOut = codeA || codeB,
p = this._getEdgeIntersection(a, b, codeOut, bounds),
newCode = this._getBitCode(p, bounds);
if (codeOut === codeA) {
a = p;
codeA = newCode;
} else {
b = p;
codeB = newCode;
}
}
}
},
_getEdgeIntersection: function (a, b, code, bounds) {
var dx = b.x - a.x,
dy = b.y - a.y,
min = bounds.min,
max = bounds.max;
if (code & 8) { // top
return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y);
} else if (code & 4) { // bottom
return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y);
} else if (code & 2) { // right
return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx);
} else if (code & 1) { // left
return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx);
}
},
_getBitCode: function (/*Point*/ p, bounds) {
var code = 0;
if (p.x < bounds.min.x) { // left
code |= 1;
} else if (p.x > bounds.max.x) { // right
code |= 2;
}
if (p.y < bounds.min.y) { // bottom
code |= 4;
} else if (p.y > bounds.max.y) { // top
code |= 8;
}
return code;
},
/*jshint bitwise:true */
// square distance (to avoid unnecessary Math.sqrt calls)
_sqDist: function (p1, p2) {
var dx = p2.x - p1.x,
dy = p2.y - p1.y;
return dx * dx + dy * dy;
},
// return closest point on segment or distance to that point
_sqClosestPointOnSegment: function (p, p1, p2, sqDist) {
var x = p1.x,
y = p1.y,
dx = p2.x - x,
dy = p2.y - y,
dot = dx * dx + dy * dy,
t;
if (dot > 0) {
t = ((p.x - x) * dx + (p.y - y) * dy) / dot;
if (t > 1) {
x = p2.x;
y = p2.y;
} else if (t > 0) {
x += dx * t;
y += dy * t;
}
}
dx = p.x - x;
dy = p.y - y;
return sqDist ? dx * dx + dy * dy : new L.Point(x, y);
}
};
L.Polyline = L.Path.extend({
initialize: function (latlngs, options) {
L.Path.prototype.initialize.call(this, options);
this._latlngs = latlngs;
},
options: {
// how much to simplify the polyline on each zoom level
// more = better performance and smoother look, less = more accurate
smoothFactor: 1.0,
noClip: false,
updateOnMoveEnd: true
},
projectLatlngs: function () {
this._originalPoints = [];
for (var i = 0, len = this._latlngs.length; i < len; i++) {
this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]);
}
},
getPathString: function () {
for (var i = 0, len = this._parts.length, str = ''; i < len; i++) {
str += this._getPathPartStr(this._parts[i]);
}
return str;
},
getLatLngs: function () {
return this._latlngs;
},
setLatLngs: function (latlngs) {
this._latlngs = latlngs;
this._redraw();
return this;
},
addLatLng: function (latlng) {
this._latlngs.push(latlng);
this._redraw();
return this;
},
spliceLatLngs: function (index, howMany) {
var removed = [].splice.apply(this._latlngs, arguments);
this._redraw();
return removed;
},
closestLayerPoint: function (p) {
var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null;
for (var j = 0, jLen = parts.length; j < jLen; j++) {
var points = parts[j];
for (var i = 1, len = points.length; i < len; i++) {
p1 = points[i - 1];
p2 = points[i];
var point = L.LineUtil._sqClosestPointOnSegment(p, p1, p2);
if (point._sqDist < minDistance) {
minDistance = point._sqDist;
minPoint = point;
}
}
}
if (minPoint) {
minPoint.distance = Math.sqrt(minDistance);
}
return minPoint;
},
getBounds: function () {
var b = new L.LatLngBounds();
var latLngs = this.getLatLngs();
for (var i = 0, len = latLngs.length; i < len; i++) {
b.extend(latLngs[i]);
}
return b;
},
_getPathPartStr: function (points) {
var round = L.Path.VML;
for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) {
p = points[j];
if (round) {
p._round();
}
str += (j ? 'L' : 'M') + p.x + ' ' + p.y;
}
return str;
},
_clipPoints: function () {
var points = this._originalPoints,
len = points.length,
i, k, segment;
if (this.options.noClip) {
this._parts = [points];
return;
}
this._parts = [];
var parts = this._parts,
vp = this._map._pathViewport,
lu = L.LineUtil;
for (i = 0, k = 0; i < len - 1; i++) {
segment = lu.clipSegment(points[i], points[i + 1], vp, i);
if (!segment) {
continue;
}
parts[k] = parts[k] || [];
parts[k].push(segment[0]);
// if segment goes out of screen, or it's the last one, it's the end of the line part
if ((segment[1] !== points[i + 1]) || (i === len - 2)) {
parts[k].push(segment[1]);
k++;
}
}
},
// simplify each clipped part of the polyline
_simplifyPoints: function () {
var parts = this._parts,
lu = L.LineUtil;
for (var i = 0, len = parts.length; i < len; i++) {
parts[i] = lu.simplify(parts[i], this.options.smoothFactor);
}
},
_updatePath: function () {
this._clipPoints();
this._simplifyPoints();
L.Path.prototype._updatePath.call(this);
}
});
/*
* L.PolyUtil contains utilify functions for polygons (clipping, etc.).
*/
/*jshint bitwise:false */ // allow bitwise oprations here
L.PolyUtil = {};
/*
* Sutherland-Hodgeman polygon clipping algorithm.
* Used to avoid rendering parts of a polygon that are not currently visible.
*/
L.PolyUtil.clipPolygon = function (points, bounds) {
var min = bounds.min,
max = bounds.max,
clippedPoints,
edges = [1, 4, 2, 8],
i, j, k,
a, b,
len, edge, p,
lu = L.LineUtil;
for (i = 0, len = points.length; i < len; i++) {
points[i]._code = lu._getBitCode(points[i], bounds);
}
// for each edge (left, bottom, right, top)
for (k = 0; k < 4; k++) {
edge = edges[k];
clippedPoints = [];
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) {
a = points[i];
b = points[j];
// if a is inside the clip window
if (!(a._code & edge)) {
// if b is outside the clip window (a->b goes out of screen)
if (b._code & edge) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
clippedPoints.push(a);
// else if b is inside the clip window (a->b enters the screen)
} else if (!(b._code & edge)) {
p = lu._getEdgeIntersection(b, a, edge, bounds);
p._code = lu._getBitCode(p, bounds);
clippedPoints.push(p);
}
}
points = clippedPoints;
}
return points;
};
/*jshint bitwise:true */
/*
* L.Polygon is used to display polygons on a map.
*/
L.Polygon = L.Polyline.extend({
options: {
fill: true
},
initialize: function (latlngs, options) {
L.Polyline.prototype.initialize.call(this, latlngs, options);
if (latlngs && (latlngs[0] instanceof Array)) {
this._latlngs = latlngs[0];
this._holes = latlngs.slice(1);
}
},
projectLatlngs: function () {
L.Polyline.prototype.projectLatlngs.call(this);
// project polygon holes points
// TODO move this logic to Polyline to get rid of duplication
this._holePoints = [];
if (!this._holes) {
return;
}
for (var i = 0, len = this._holes.length, hole; i < len; i++) {
this._holePoints[i] = [];
for (var j = 0, len2 = this._holes[i].length; j < len2; j++) {
this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]);
}
}
},
_clipPoints: function () {
var points = this._originalPoints,
newParts = [];
this._parts = [points].concat(this._holePoints);
if (this.options.noClip) {
return;
}
for (var i = 0, len = this._parts.length; i < len; i++) {
var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport);
if (!clipped.length) {
continue;
}
newParts.push(clipped);
}
this._parts = newParts;
},
_getPathPartStr: function (points) {
var str = L.Polyline.prototype._getPathPartStr.call(this, points);
return str + (L.Browser.svg ? 'z' : 'x');
}
});
/*
* Contains L.MultiPolyline and L.MultiPolygon layers.
*/
(function () {
function createMulti(Klass) {
return L.FeatureGroup.extend({
initialize: function (latlngs, options) {
this._layers = {};
this._options = options;
this.setLatLngs(latlngs);
},
setLatLngs: function (latlngs) {
var i = 0, len = latlngs.length;
this._iterateLayers(function (layer) {
if (i < len) {
layer.setLatLngs(latlngs[i++]);
} else {
this.removeLayer(layer);
}
}, this);
while (i < len) {
this.addLayer(new Klass(latlngs[i++], this._options));
}
}
});
}
L.MultiPolyline = createMulti(L.Polyline);
L.MultiPolygon = createMulti(L.Polygon);
}());
/*
* L.Circle is a circle overlay (with a certain radius in meters).
*/
L.Circle = L.Path.extend({
initialize: function (latlng, radius, options) {
L.Path.prototype.initialize.call(this, options);
this._latlng = latlng;
this._mRadius = radius;
},
options: {
fill: true
},
setLatLng: function (latlng) {
this._latlng = latlng;
this._redraw();
return this;
},
setRadius: function (radius) {
this._mRadius = radius;
this._redraw();
return this;
},
projectLatlngs: function () {
var equatorLength = 40075017,
hLength = equatorLength * Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat);
var lngSpan = (this._mRadius / hLength) * 360,
latlng2 = new L.LatLng(this._latlng.lat, this._latlng.lng - lngSpan, true),
point2 = this._map.latLngToLayerPoint(latlng2);
this._point = this._map.latLngToLayerPoint(this._latlng);
this._radius = Math.round(this._point.x - point2.x);
},
getPathString: function () {
var p = this._point,
r = this._radius;
if (this._checkIfEmpty()) {
return '';
}
if (L.Browser.svg) {
return "M" + p.x + "," + (p.y - r) +
"A" + r + "," + r + ",0,1,1," +
(p.x - 0.1) + "," + (p.y - r) + " z";
} else {
p._round();
r = Math.round(r);
return "AL " + p.x + "," + p.y + " " + r + "," + r + " 0," + (65535 * 360);
}
},
_checkIfEmpty: function () {
var vp = this._map._pathViewport,
r = this._radius,
p = this._point;
return p.x - r > vp.max.x || p.y - r > vp.max.y ||
p.x + r < vp.min.x || p.y + r < vp.min.y;
}
});
/*
* L.CircleMarker is a circle overlay with a permanent pixel radius.
*/
L.CircleMarker = L.Circle.extend({
options: {
radius: 10,
weight: 2
},
initialize: function (latlng, options) {
L.Circle.prototype.initialize.call(this, latlng, null, options);
this._radius = this.options.radius;
},
projectLatlngs: function () {
this._point = this._map.latLngToLayerPoint(this._latlng);
},
setRadius: function (radius) {
this._radius = radius;
this._redraw();
return this;
}
});
L.Polyline.include(!L.Path.CANVAS ? {} : {
_containsPoint: function (p, closed) {
var i, j, k, len, len2, dist, part,
w = this.options.weight / 2;
if (L.Browser.touch) {
w += 10; // polyline click tolerance on touch devices
}
for (i = 0, len = this._parts.length; i < len; i++) {
part = this._parts[i];
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
if (!closed && (j === 0)) {
continue;
}
dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]);
if (dist <= w) {
return true;
}
}
}
return false;
}
});
L.Polygon.include(!L.Path.CANVAS ? {} : {
_containsPoint: function (p) {
var inside = false,
part, p1, p2,
i, j, k,
len, len2;
// TODO optimization: check if within bounds first
if (L.Polyline.prototype._containsPoint.call(this, p, true)) {
// click on polygon border
return true;
}
// ray casting algorithm for detecting if point is in polygon
for (i = 0, len = this._parts.length; i < len; i++) {
part = this._parts[i];
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) {
p1 = part[j];
p2 = part[k];
if (((p1.y > p.y) !== (p2.y > p.y)) &&
(p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) {
inside = !inside;
}
}
}
return inside;
}
});
/*
* Circle canvas specific drawing parts.
*/
L.Circle.include(!L.Path.CANVAS ? {} : {
_drawPath: function () {
var p = this._point;
this._ctx.beginPath();
this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2);
},
_containsPoint: function (p) {
var center = this._point,
w2 = this.options.stroke ? this.options.weight / 2 : 0;
return (p.distanceTo(center) <= this._radius + w2);
}
});
L.GeoJSON = L.FeatureGroup.extend({
initialize: function (geojson, options) {
L.Util.setOptions(this, options);
this._geojson = geojson;
this._layers = {};
if (geojson) {
this.addGeoJSON(geojson);
}
},
addGeoJSON: function (geojson) {
if (geojson.features) {
for (var i = 0, len = geojson.features.length; i < len; i++) {
this.addGeoJSON(geojson.features[i]);
}
return;
}
var isFeature = (geojson.type === 'Feature'),
geometry = (isFeature ? geojson.geometry : geojson),
layer = L.GeoJSON.geometryToLayer(geometry, this.options.pointToLayer);
this.fire('featureparse', {
layer: layer,
properties: geojson.properties,
geometryType: geometry.type,
bbox: geojson.bbox,
id: geojson.id
});
this.addLayer(layer);
}
});
L.Util.extend(L.GeoJSON, {
geometryToLayer: function (geometry, pointToLayer) {
var coords = geometry.coordinates,
latlng, latlngs,
i, len,
layer,
layers = [];
switch (geometry.type) {
case 'Point':
latlng = this.coordsToLatLng(coords);
return pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng);
case 'MultiPoint':
for (i = 0, len = coords.length; i < len; i++) {
latlng = this.coordsToLatLng(coords[i]);
layer = pointToLayer ? pointToLayer(latlng) : new L.Marker(latlng);
layers.push(layer);
}
return new L.FeatureGroup(layers);
case 'LineString':
latlngs = this.coordsToLatLngs(coords);
return new L.Polyline(latlngs);
case 'Polygon':
latlngs = this.coordsToLatLngs(coords, 1);
return new L.Polygon(latlngs);
case 'MultiLineString':
latlngs = this.coordsToLatLngs(coords, 1);
return new L.MultiPolyline(latlngs);
case "MultiPolygon":
latlngs = this.coordsToLatLngs(coords, 2);
return new L.MultiPolygon(latlngs);
case "GeometryCollection":
for (i = 0, len = geometry.geometries.length; i < len; i++) {
layer = this.geometryToLayer(geometry.geometries[i], pointToLayer);
layers.push(layer);
}
return new L.FeatureGroup(layers);
default:
throw new Error('Invalid GeoJSON object.');
}
},
coordsToLatLng: function (/*Array*/ coords, /*Boolean*/ reverse)/*: LatLng*/ {
var lat = parseFloat(coords[reverse ? 0 : 1]),
lng = parseFloat(coords[reverse ? 1 : 0]);
return new L.LatLng(lat, lng, true);
},
coordsToLatLngs: function (/*Array*/ coords, /*Number*/ levelsDeep, /*Boolean*/ reverse)/*: Array*/ {
var latlng, latlngs = [],
i, len = coords.length;
for (i = 0; i < len; i++) {
latlng = levelsDeep ?
this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) :
this.coordsToLatLng(coords[i], reverse);
latlngs.push(latlng);
}
return latlngs;
}
});
/*
* L.DomEvent contains functions for working with DOM events.
*/
L.DomEvent = {
/* inpired by John Resig, Dean Edwards and YUI addEvent implementations */
addListener: function (/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn, /*Object*/ context) {
var id = L.Util.stamp(fn),
key = '_leaflet_' + type + id;
if (obj[key]) {
return;
}
var handler = function (e) {
return fn.call(context || obj, e || L.DomEvent._getEvent());
};
if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
this.addDoubleTapListener(obj, handler, id);
} else if ('addEventListener' in obj) {
if (type === 'mousewheel') {
obj.addEventListener('DOMMouseScroll', handler, false);
obj.addEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
var originalHandler = handler,
newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
handler = function (e) {
if (!L.DomEvent._checkMouse(obj, e)) {
return;
}
return originalHandler(e);
};
obj.addEventListener(newType, handler, false);
} else {
obj.addEventListener(type, handler, false);
}
} else if ('attachEvent' in obj) {
obj.attachEvent("on" + type, handler);
}
obj[key] = handler;
},
removeListener: function (/*HTMLElement*/ obj, /*String*/ type, /*Function*/ fn) {
var id = L.Util.stamp(fn),
key = '_leaflet_' + type + id,
handler = obj[key];
if (!handler) {
return;
}
if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
this.removeDoubleTapListener(obj, id);
} else if ('removeEventListener' in obj) {
if (type === 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', handler, false);
obj.removeEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
} else {
obj.removeEventListener(type, handler, false);
}
} else if ('detachEvent' in obj) {
obj.detachEvent("on" + type, handler);
}
obj[key] = null;
},
_checkMouse: function (el, e) {
var related = e.relatedTarget;
if (!related) {
return true;
}
try {
while (related && (related !== el)) {
related = related.parentNode;
}
} catch (err) {
return false;
}
return (related !== el);
},
/*jshint noarg:false */ // evil magic for IE
_getEvent: function () {
var e = window.event;
if (!e) {
var caller = arguments.callee.caller;
while (caller) {
e = caller['arguments'][0];
if (e && window.Event === e.constructor) {
break;
}
caller = caller.caller;
}
}
return e;
},
/*jshint noarg:false */
stopPropagation: function (/*Event*/ e) {
if (e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
},
disableClickPropagation: function (/*HTMLElement*/ el) {
L.DomEvent.addListener(el, L.Draggable.START, L.DomEvent.stopPropagation);
L.DomEvent.addListener(el, 'click', L.DomEvent.stopPropagation);
L.DomEvent.addListener(el, 'dblclick', L.DomEvent.stopPropagation);
},
preventDefault: function (/*Event*/ e) {
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
},
stop: function (e) {
L.DomEvent.preventDefault(e);
L.DomEvent.stopPropagation(e);
},
getMousePosition: function (e, container) {
var x = e.pageX ? e.pageX : e.clientX +
document.body.scrollLeft + document.documentElement.scrollLeft,
y = e.pageY ? e.pageY : e.clientY +
document.body.scrollTop + document.documentElement.scrollTop,
pos = new L.Point(x, y);
return (container ?
pos.subtract(L.DomUtil.getViewportOffset(container)) : pos);
},
getWheelDelta: function (e) {
var delta = 0;
if (e.wheelDelta) {
delta = e.wheelDelta / 120;
}
if (e.detail) {
delta = -e.detail / 3;
}
return delta;
}
};
/*
* L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too.
*/
L.Draggable = L.Class.extend({
includes: L.Mixin.Events,
statics: {
START: L.Browser.touch ? 'touchstart' : 'mousedown',
END: L.Browser.touch ? 'touchend' : 'mouseup',
MOVE: L.Browser.touch ? 'touchmove' : 'mousemove',
TAP_TOLERANCE: 15
},
initialize: function (element, dragStartTarget) {
this._element = element;
this._dragStartTarget = dragStartTarget || element;
},
enable: function () {
if (this._enabled) {
return;
}
L.DomEvent.addListener(this._dragStartTarget, L.Draggable.START, this._onDown, this);
this._enabled = true;
},
disable: function () {
if (!this._enabled) {
return;
}
L.DomEvent.removeListener(this._dragStartTarget, L.Draggable.START, this._onDown);
this._enabled = false;
},
_onDown: function (e) {
if ((!L.Browser.touch && e.shiftKey) || ((e.which !== 1) && (e.button !== 1) && !e.touches)) {
return;
}
if (e.touches && e.touches.length > 1) {
return;
}
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e),
el = first.target;
L.DomEvent.preventDefault(e);
if (L.Browser.touch && el.tagName.toLowerCase() === 'a') {
el.className += ' leaflet-active';
}
this._moved = false;
if (this._moving) {
return;
}
if (!L.Browser.touch) {
L.DomUtil.disableTextSelection();
this._setMovingCursor();
}
this._startPos = this._newPos = L.DomUtil.getPosition(this._element);
this._startPoint = new L.Point(first.clientX, first.clientY);
L.DomEvent.addListener(document, L.Draggable.MOVE, this._onMove, this);
L.DomEvent.addListener(document, L.Draggable.END, this._onUp, this);
},
_onMove: function (e) {
if (e.touches && e.touches.length > 1) {
return;
}
L.DomEvent.preventDefault(e);
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e);
if (!this._moved) {
this.fire('dragstart');
this._moved = true;
}
this._moving = true;
var newPoint = new L.Point(first.clientX, first.clientY);
this._newPos = this._startPos.add(newPoint).subtract(this._startPoint);
L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget);
},
_updatePosition: function () {
this.fire('predrag');
L.DomUtil.setPosition(this._element, this._newPos);
this.fire('drag');
},
_onUp: function (e) {
if (e.changedTouches) {
var first = e.changedTouches[0],
el = first.target,
dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0;
if (el.tagName.toLowerCase() === 'a') {
el.className = el.className.replace(' leaflet-active', '');
}
if (dist < L.Draggable.TAP_TOLERANCE) {
this._simulateEvent('click', first);
}
}
if (!L.Browser.touch) {
L.DomUtil.enableTextSelection();
this._restoreCursor();
}
L.DomEvent.removeListener(document, L.Draggable.MOVE, this._onMove);
L.DomEvent.removeListener(document, L.Draggable.END, this._onUp);
if (this._moved) {
this.fire('dragend');
}
this._moving = false;
},
_setMovingCursor: function () {
this._bodyCursor = document.body.style.cursor;
document.body.style.cursor = 'move';
},
_restoreCursor: function () {
document.body.style.cursor = this._bodyCursor;
},
_simulateEvent: function (type, e) {
var simulatedEvent = document.createEvent('MouseEvents');
simulatedEvent.initMouseEvent(
type, true, true, window, 1,
e.screenX, e.screenY,
e.clientX, e.clientY,
false, false, false, false, 0, null);
e.target.dispatchEvent(simulatedEvent);
}
});
/*
* L.Handler classes are used internally to inject interaction features to classes like Map and Marker.
*/
L.Handler = L.Class.extend({
initialize: function (map) {
this._map = map;
},
enable: function () {
if (this._enabled) {
return;
}
this._enabled = true;
this.addHooks();
},
disable: function () {
if (!this._enabled) {
return;
}
this._enabled = false;
this.removeHooks();
},
enabled: function () {
return !!this._enabled;
}
});
/*
* L.Handler.MapDrag is used internally by L.Map to make the map draggable.
*/
L.Map.Drag = L.Handler.extend({
addHooks: function () {
if (!this._draggable) {
this._draggable = new L.Draggable(this._map._mapPane, this._map._container);
this._draggable
.on('dragstart', this._onDragStart, this)
.on('drag', this._onDrag, this)
.on('dragend', this._onDragEnd, this);
var options = this._map.options;
if (options.worldCopyJump && !options.continuousWorld) {
this._draggable.on('predrag', this._onPreDrag, this);
this._map.on('viewreset', this._onViewReset, this);
}
}
this._draggable.enable();
},
removeHooks: function () {
this._draggable.disable();
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function () {
this._map
.fire('movestart')
.fire('dragstart');
},
_onDrag: function () {
this._map
.fire('move')
.fire('drag');
},
_onViewReset: function () {
var pxCenter = this._map.getSize().divideBy(2),
pxWorldCenter = this._map.latLngToLayerPoint(new L.LatLng(0, 0));
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter);
},
_onPreDrag: function () {
var map = this._map,
worldWidth = map.options.scale(map.getZoom()),
halfWidth = Math.round(worldWidth / 2),
dx = this._initialWorldOffset.x,
x = this._draggable._newPos.x,
newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx,
newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx,
newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2;
this._draggable._newPos.x = newX;
},
_onDragEnd: function () {
var map = this._map;
map
.fire('moveend')
.fire('dragend');
if (map.options.maxBounds) {
// TODO predrag validation instead of animation
L.Util.requestAnimFrame(this._panInsideMaxBounds, map, true, map._container);
}
},
_panInsideMaxBounds: function () {
this.panInsideBounds(this.options.maxBounds);
}
});
/*
* L.Handler.DoubleClickZoom is used internally by L.Map to add double-click zooming.
*/
L.Map.DoubleClickZoom = L.Handler.extend({
addHooks: function () {
this._map.on('dblclick', this._onDoubleClick);
// TODO remove 3d argument?
},
removeHooks: function () {
this._map.off('dblclick', this._onDoubleClick);
},
_onDoubleClick: function (e) {
this.setView(e.latlng, this._zoom + 1);
}
});
/*
* L.Handler.ScrollWheelZoom is used internally by L.Map to enable mouse scroll wheel zooming on the map.
*/
L.Map.ScrollWheelZoom = L.Handler.extend({
addHooks: function () {
L.DomEvent.addListener(this._map._container, 'mousewheel', this._onWheelScroll, this);
this._delta = 0;
},
removeHooks: function () {
L.DomEvent.removeListener(this._map._container, 'mousewheel', this._onWheelScroll);
},
_onWheelScroll: function (e) {
var delta = L.DomEvent.getWheelDelta(e);
this._delta += delta;
this._lastMousePos = this._map.mouseEventToContainerPoint(e);
clearTimeout(this._timer);
this._timer = setTimeout(L.Util.bind(this._performZoom, this), 50);
L.DomEvent.preventDefault(e);
},
_performZoom: function () {
var map = this._map,
delta = Math.round(this._delta),
zoom = map.getZoom();
delta = Math.max(Math.min(delta, 4), -4);
delta = map._limitZoom(zoom + delta) - zoom;
this._delta = 0;
if (!delta) {
return;
}
var newCenter = this._getCenterForScrollWheelZoom(this._lastMousePos, delta),
newZoom = zoom + delta;
map.setView(newCenter, newZoom);
},
_getCenterForScrollWheelZoom: function (mousePos, delta) {
var map = this._map,
centerPoint = map.getPixelBounds().getCenter(),
viewHalf = map.getSize().divideBy(2),
centerOffset = mousePos.subtract(viewHalf).multiplyBy(1 - Math.pow(2, -delta)),
newCenterPoint = centerPoint.add(centerOffset);
return map.unproject(newCenterPoint, map._zoom, true);
}
});
L.Util.extend(L.DomEvent, {
// inspired by Zepto touch code by Thomas Fuchs
addDoubleTapListener: function (obj, handler, id) {
var last,
doubleTap = false,
delay = 250,
touch,
pre = '_leaflet_',
touchstart = 'touchstart',
touchend = 'touchend';
function onTouchStart(e) {
if (e.touches.length !== 1) {
return;
}
var now = Date.now(),
delta = now - (last || now);
touch = e.touches[0];
doubleTap = (delta > 0 && delta <= delay);
last = now;
}
function onTouchEnd(e) {
if (doubleTap) {
touch.type = 'dblclick';
handler(touch);
last = null;
}
}
obj[pre + touchstart + id] = onTouchStart;
obj[pre + touchend + id] = onTouchEnd;
obj.addEventListener(touchstart, onTouchStart, false);
obj.addEventListener(touchend, onTouchEnd, false);
},
removeDoubleTapListener: function (obj, id) {
var pre = '_leaflet_';
obj.removeEventListener(obj, obj[pre + 'touchstart' + id], false);
obj.removeEventListener(obj, obj[pre + 'touchend' + id], false);
}
});
/*
* L.Handler.TouchZoom is used internally by L.Map to add touch-zooming on Webkit-powered mobile browsers.
*/
L.Map.TouchZoom = L.Handler.extend({
addHooks: function () {
L.DomEvent.addListener(this._map._container, 'touchstart', this._onTouchStart, this);
},
removeHooks: function () {
L.DomEvent.removeListener(this._map._container, 'touchstart', this._onTouchStart, this);
},
_onTouchStart: function (e) {
if (!e.touches || e.touches.length !== 2 || this._map._animatingZoom) {
return;
}
var p1 = this._map.mouseEventToLayerPoint(e.touches[0]),
p2 = this._map.mouseEventToLayerPoint(e.touches[1]),
viewCenter = this._map.containerPointToLayerPoint(this._map.getSize().divideBy(2));
this._startCenter = p1.add(p2).divideBy(2, true);
this._startDist = p1.distanceTo(p2);
//this._startTransform = this._map._mapPane.style.webkitTransform;
this._moved = false;
this._zooming = true;
this._centerOffset = viewCenter.subtract(this._startCenter);
L.DomEvent.addListener(document, 'touchmove', this._onTouchMove, this);
L.DomEvent.addListener(document, 'touchend', this._onTouchEnd, this);
L.DomEvent.preventDefault(e);
},
_onTouchMove: function (e) {
if (!e.touches || e.touches.length !== 2) {
return;
}
if (!this._moved) {
this._map._mapPane.className += ' leaflet-zoom-anim';
this._map
.fire('zoomstart')
.fire('movestart')
._prepareTileBg();
this._moved = true;
}
var p1 = this._map.mouseEventToLayerPoint(e.touches[0]),
p2 = this._map.mouseEventToLayerPoint(e.touches[1]);
this._scale = p1.distanceTo(p2) / this._startDist;
this._delta = p1.add(p2).divideBy(2, true).subtract(this._startCenter);
// Used 2 translates instead of transform-origin because of a very strange bug -
// it didn't count the origin on the first touch-zoom but worked correctly afterwards
this._map._tileBg.style.webkitTransform = [
L.DomUtil.getTranslateString(this._delta),
L.DomUtil.getScaleString(this._scale, this._startCenter)
].join(" ");
L.DomEvent.preventDefault(e);
},
_onTouchEnd: function (e) {
if (!this._moved || !this._zooming) {
return;
}
this._zooming = false;
var oldZoom = this._map.getZoom(),
floatZoomDelta = Math.log(this._scale) / Math.LN2,
roundZoomDelta = (floatZoomDelta > 0 ? Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)),
zoom = this._map._limitZoom(oldZoom + roundZoomDelta),
zoomDelta = zoom - oldZoom,
centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale),
centerPoint = this._map.getPixelOrigin().add(this._startCenter).add(centerOffset),
center = this._map.unproject(centerPoint);
L.DomEvent.removeListener(document, 'touchmove', this._onTouchMove);
L.DomEvent.removeListener(document, 'touchend', this._onTouchEnd);
var finalScale = Math.pow(2, zoomDelta);
this._map._runAnimation(center, zoom, finalScale / this._scale, this._startCenter.add(centerOffset));
}
});
/*
* L.Handler.ShiftDragZoom is used internally by L.Map to add shift-drag zoom (zoom to a selected bounding box).
*/
L.Map.BoxZoom = L.Handler.extend({
initialize: function (map) {
this._map = map;
this._container = map._container;
this._pane = map._panes.overlayPane;
},
addHooks: function () {
L.DomEvent.addListener(this._container, 'mousedown', this._onMouseDown, this);
},
removeHooks: function () {
L.DomEvent.removeListener(this._container, 'mousedown', this._onMouseDown);
},
_onMouseDown: function (e) {
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) {
return false;
}
L.DomUtil.disableTextSelection();
this._startLayerPoint = this._map.mouseEventToLayerPoint(e);
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane);
L.DomUtil.setPosition(this._box, this._startLayerPoint);
//TODO move cursor to styles
this._container.style.cursor = 'crosshair';
L.DomEvent.addListener(document, 'mousemove', this._onMouseMove, this);
L.DomEvent.addListener(document, 'mouseup', this._onMouseUp, this);
L.DomEvent.preventDefault(e);
},
_onMouseMove: function (e) {
var layerPoint = this._map.mouseEventToLayerPoint(e),
dx = layerPoint.x - this._startLayerPoint.x,
dy = layerPoint.y - this._startLayerPoint.y;
var newX = Math.min(layerPoint.x, this._startLayerPoint.x),
newY = Math.min(layerPoint.y, this._startLayerPoint.y),
newPos = new L.Point(newX, newY);
L.DomUtil.setPosition(this._box, newPos);
this._box.style.width = (Math.abs(dx) - 4) + 'px';
this._box.style.height = (Math.abs(dy) - 4) + 'px';
},
_onMouseUp: function (e) {
this._pane.removeChild(this._box);
this._container.style.cursor = '';
L.DomUtil.enableTextSelection();
L.DomEvent.removeListener(document, 'mousemove', this._onMouseMove);
L.DomEvent.removeListener(document, 'mouseup', this._onMouseUp);
var layerPoint = this._map.mouseEventToLayerPoint(e);
var bounds = new L.LatLngBounds(
this._map.layerPointToLatLng(this._startLayerPoint),
this._map.layerPointToLatLng(layerPoint));
this._map.fitBounds(bounds);
}
});
/*
* L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable.
*/
L.Handler.MarkerDrag = L.Handler.extend({
initialize: function (marker) {
this._marker = marker;
},
addHooks: function () {
var icon = this._marker._icon;
if (!this._draggable) {
this._draggable = new L.Draggable(icon, icon);
this._draggable
.on('dragstart', this._onDragStart, this)
.on('drag', this._onDrag, this)
.on('dragend', this._onDragEnd, this);
}
this._draggable.enable();
},
removeHooks: function () {
this._draggable.disable();
},
moved: function () {
return this._draggable && this._draggable._moved;
},
_onDragStart: function (e) {
this._marker
.closePopup()
.fire('movestart')
.fire('dragstart');
},
_onDrag: function (e) {
// update shadow position
var iconPos = L.DomUtil.getPosition(this._marker._icon);
if (this._marker._shadow) {
L.DomUtil.setPosition(this._marker._shadow, iconPos);
}
this._marker._latlng = this._marker._map.layerPointToLatLng(iconPos);
this._marker
.fire('move')
.fire('drag');
},
_onDragEnd: function () {
this._marker
.fire('moveend')
.fire('dragend');
}
});
L.Control = {};
L.Control.Position = {
TOP_LEFT: 'topLeft',
TOP_RIGHT: 'topRight',
BOTTOM_LEFT: 'bottomLeft',
BOTTOM_RIGHT: 'bottomRight'
};
L.Map.include({
addControl: function (control) {
control.onAdd(this);
var pos = control.getPosition(),
corner = this._controlCorners[pos],
container = control.getContainer();
L.DomUtil.addClass(container, 'leaflet-control');
if (pos.indexOf('bottom') !== -1) {
corner.insertBefore(container, corner.firstChild);
} else {
corner.appendChild(container);
}
return this;
},
removeControl: function (control) {
var pos = control.getPosition(),
corner = this._controlCorners[pos],
container = control.getContainer();
corner.removeChild(container);
if (control.onRemove) {
control.onRemove(this);
}
return this;
},
_initControlPos: function () {
var corners = this._controlCorners = {},
classPart = 'leaflet-',
top = classPart + 'top',
bottom = classPart + 'bottom',
left = classPart + 'left',
right = classPart + 'right',
controlContainer = L.DomUtil.create('div', classPart + 'control-container', this._container);
if (L.Browser.touch) {
controlContainer.className += ' ' + classPart + 'big-buttons';
}
corners.topLeft = L.DomUtil.create('div', top + ' ' + left, controlContainer);
corners.topRight = L.DomUtil.create('div', top + ' ' + right, controlContainer);
corners.bottomLeft = L.DomUtil.create('div', bottom + ' ' + left, controlContainer);
corners.bottomRight = L.DomUtil.create('div', bottom + ' ' + right, controlContainer);
}
});
L.Control.Zoom = L.Class.extend({
onAdd: function (map) {
this._map = map;
this._container = L.DomUtil.create('div', 'leaflet-control-zoom');
this._zoomInButton = this._createButton(
'Zoom in', 'leaflet-control-zoom-in', this._map.zoomIn, this._map);
this._zoomOutButton = this._createButton(
'Zoom out', 'leaflet-control-zoom-out', this._map.zoomOut, this._map);
this._container.appendChild(this._zoomInButton);
this._container.appendChild(this._zoomOutButton);
},
getContainer: function () {
return this._container;
},
getPosition: function () {
return L.Control.Position.TOP_LEFT;
},
_createButton: function (title, className, fn, context) {
var link = document.createElement('a');
link.href = '#';
link.title = title;
link.className = className;
if (!L.Browser.touch) {
L.DomEvent.disableClickPropagation(link);
}
L.DomEvent.addListener(link, 'click', L.DomEvent.preventDefault);
L.DomEvent.addListener(link, 'click', fn, context);
return link;
}
});
L.Control.Attribution = L.Class.extend({
initialize: function (prefix) {
this._prefix = prefix || 'Powered by Leaflet';
this._attributions = {};
},
onAdd: function (map) {
this._container = L.DomUtil.create('div', 'leaflet-control-attribution');
L.DomEvent.disableClickPropagation(this._container);
this._map = map;
this._update();
},
getPosition: function () {
return L.Control.Position.BOTTOM_RIGHT;
},
getContainer: function () {
return this._container;
},
setPrefix: function (prefix) {
this._prefix = prefix;
this._update();
},
addAttribution: function (text) {
if (!text) {
return;
}
if (!this._attributions[text]) {
this._attributions[text] = 0;
}
this._attributions[text]++;
this._update();
},
removeAttribution: function (text) {
if (!text) {
return;
}
this._attributions[text]--;
this._update();
},
_update: function () {
if (!this._map) {
return;
}
var attribs = [];
for (var i in this._attributions) {
if (this._attributions.hasOwnProperty(i)) {
attribs.push(i);
}
}
var prefixAndAttribs = [];
if (this._prefix) {
prefixAndAttribs.push(this._prefix);
}
if (attribs.length) {
prefixAndAttribs.push(attribs.join(', '));
}
this._container.innerHTML = prefixAndAttribs.join(' — ');
}
});
L.Control.Layers = L.Class.extend({
options: {
collapsed: true
},
initialize: function (baseLayers, overlays, options) {
L.Util.setOptions(this, options);
this._layers = {};
for (var i in baseLayers) {
if (baseLayers.hasOwnProperty(i)) {
this._addLayer(baseLayers[i], i);
}
}
for (i in overlays) {
if (overlays.hasOwnProperty(i)) {
this._addLayer(overlays[i], i, true);
}
}
},
onAdd: function (map) {
this._map = map;
this._initLayout();
this._update();
},
getContainer: function () {
return this._container;
},
getPosition: function () {
return L.Control.Position.TOP_RIGHT;
},
addBaseLayer: function (layer, name) {
this._addLayer(layer, name);
this._update();
return this;
},
addOverlay: function (layer, name) {
this._addLayer(layer, name, true);
this._update();
return this;
},
removeLayer: function (layer) {
var id = L.Util.stamp(layer);
delete this._layers[id];
this._update();
return this;
},
_initLayout: function () {
this._container = L.DomUtil.create('div', 'leaflet-control-layers');
if (!L.Browser.touch) {
L.DomEvent.disableClickPropagation(this._container);
}
this._form = L.DomUtil.create('form', 'leaflet-control-layers-list');
if (this.options.collapsed) {
L.DomEvent.addListener(this._container, 'mouseover', this._expand, this);
L.DomEvent.addListener(this._container, 'mouseout', this._collapse, this);
var link = this._layersLink = L.DomUtil.create('a', 'leaflet-control-layers-toggle');
link.href = '#';
link.title = 'Layers';
if (L.Browser.touch) {
L.DomEvent.addListener(link, 'click', this._expand, this);
//L.DomEvent.disableClickPropagation(link);
} else {
L.DomEvent.addListener(link, 'focus', this._expand, this);
}
this._map.on('movestart', this._collapse, this);
// TODO keyboard accessibility
this._container.appendChild(link);
} else {
this._expand();
}
this._baseLayersList = L.DomUtil.create('div', 'leaflet-control-layers-base', this._form);
this._separator = L.DomUtil.create('div', 'leaflet-control-layers-separator', this._form);
this._overlaysList = L.DomUtil.create('div', 'leaflet-control-layers-overlays', this._form);
this._container.appendChild(this._form);
},
_addLayer: function (layer, name, overlay) {
var id = L.Util.stamp(layer);
this._layers[id] = {
layer: layer,
name: name,
overlay: overlay
};
},
_update: function () {
if (!this._container) {
return;
}
this._baseLayersList.innerHTML = '';
this._overlaysList.innerHTML = '';
var baseLayersPresent = false,
overlaysPresent = false;
for (var i in this._layers) {
if (this._layers.hasOwnProperty(i)) {
var obj = this._layers[i];
this._addItem(obj);
overlaysPresent = overlaysPresent || obj.overlay;
baseLayersPresent = baseLayersPresent || !obj.overlay;
}
}
this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none');
},
_addItem: function (obj, onclick) {
var label = document.createElement('label');
var input = document.createElement('input');
if (!obj.overlay) {
input.name = 'leaflet-base-layers';
}
input.type = obj.overlay ? 'checkbox' : 'radio';
input.checked = this._map.hasLayer(obj.layer);
input.layerId = L.Util.stamp(obj.layer);
L.DomEvent.addListener(input, 'click', this._onInputClick, this);
var name = document.createTextNode(' ' + obj.name);
label.appendChild(input);
label.appendChild(name);
var container = obj.overlay ? this._overlaysList : this._baseLayersList;
container.appendChild(label);
},
_onInputClick: function () {
var i, input, obj,
inputs = this._form.getElementsByTagName('input'),
inputsLen = inputs.length;
for (i = 0; i < inputsLen; i++) {
input = inputs[i];
obj = this._layers[input.layerId];
if (input.checked) {
this._map.addLayer(obj.layer, !obj.overlay);
} else {
this._map.removeLayer(obj.layer);
}
}
},
_expand: function () {
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
},
_collapse: function () {
this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', '');
}
});
L.Transition = L.Class.extend({
includes: L.Mixin.Events,
statics: {
CUSTOM_PROPS_SETTERS: {
position: L.DomUtil.setPosition
//TODO transform custom attr
},
implemented: function () {
return L.Transition.NATIVE || L.Transition.TIMER;
}
},
options: {
easing: 'ease',
duration: 0.5
},
_setProperty: function (prop, value) {
var setters = L.Transition.CUSTOM_PROPS_SETTERS;
if (prop in setters) {
setters[prop](this._el, value);
} else {
this._el.style[prop] = value;
}
}
});
/*
* L.Transition native implementation that powers Leaflet animation
* in browsers that support CSS3 Transitions
*/
L.Transition = L.Transition.extend({
statics: (function () {
var transition = L.DomUtil.TRANSITION,
transitionEnd = (transition === 'webkitTransition' || transition === 'OTransition' ?
transition + 'End' : 'transitionend');
return {
NATIVE: !!transition,
TRANSITION: transition,
PROPERTY: transition + 'Property',
DURATION: transition + 'Duration',
EASING: transition + 'TimingFunction',
END: transitionEnd,
// transition-property value to use with each particular custom property
CUSTOM_PROPS_PROPERTIES: {
position: L.Browser.webkit ? L.DomUtil.TRANSFORM : 'top, left'
}
};
}()),
options: {
fakeStepInterval: 100
},
initialize: function (/*HTMLElement*/ el, /*Object*/ options) {
this._el = el;
L.Util.setOptions(this, options);
L.DomEvent.addListener(el, L.Transition.END, this._onTransitionEnd, this);
this._onFakeStep = L.Util.bind(this._onFakeStep, this);
},
run: function (/*Object*/ props) {
var prop,
propsList = [],
customProp = L.Transition.CUSTOM_PROPS_PROPERTIES;
for (prop in props) {
if (props.hasOwnProperty(prop)) {
prop = customProp[prop] ? customProp[prop] : prop;
prop = this._dasherize(prop);
propsList.push(prop);
}
}
this._el.style[L.Transition.DURATION] = this.options.duration + 's';
this._el.style[L.Transition.EASING] = this.options.easing;
this._el.style[L.Transition.PROPERTY] = propsList.join(', ');
for (prop in props) {
if (props.hasOwnProperty(prop)) {
this._setProperty(prop, props[prop]);
}
}
this._inProgress = true;
this.fire('start');
if (L.Transition.NATIVE) {
clearInterval(this._timer);
this._timer = setInterval(this._onFakeStep, this.options.fakeStepInterval);
} else {
this._onTransitionEnd();
}
},
_dasherize: (function () {
var re = /([A-Z])/g;
function replaceFn(w) {
return '-' + w.toLowerCase();
}
return function (str) {
return str.replace(re, replaceFn);
};
}()),
_onFakeStep: function () {
this.fire('step');
},
_onTransitionEnd: function () {
if (this._inProgress) {
this._inProgress = false;
clearInterval(this._timer);
this._el.style[L.Transition.PROPERTY] = 'none';
this.fire('step');
this.fire('end');
}
}
});
/*
* L.Transition fallback implementation that powers Leaflet animation
* in browsers that don't support CSS3 Transitions
*/
L.Transition = L.Transition.NATIVE ? L.Transition : L.Transition.extend({
statics: {
getTime: Date.now || function () {
return +new Date();
},
TIMER: true,
EASINGS: {
'ease': [0.25, 0.1, 0.25, 1.0],
'linear': [0.0, 0.0, 1.0, 1.0],
'ease-in': [0.42, 0, 1.0, 1.0],
'ease-out': [0, 0, 0.58, 1.0],
'ease-in-out': [0.42, 0, 0.58, 1.0]
},
CUSTOM_PROPS_GETTERS: {
position: L.DomUtil.getPosition
},
//used to get units from strings like "10.5px" (->px)
UNIT_RE: /^[\d\.]+(\D*)$/
},
options: {
fps: 50
},
initialize: function (el, options) {
this._el = el;
L.Util.extend(this.options, options);
var easings = L.Transition.EASINGS[this.options.easing] || L.Transition.EASINGS.ease;
this._p1 = new L.Point(0, 0);
this._p2 = new L.Point(easings[0], easings[1]);
this._p3 = new L.Point(easings[2], easings[3]);
this._p4 = new L.Point(1, 1);
this._step = L.Util.bind(this._step, this);
this._interval = Math.round(1000 / this.options.fps);
},
run: function (props) {
this._props = {};
var getters = L.Transition.CUSTOM_PROPS_GETTERS,
re = L.Transition.UNIT_RE;
this.fire('start');
for (var prop in props) {
if (props.hasOwnProperty(prop)) {
var p = {};
if (prop in getters) {
p.from = getters[prop](this._el);
} else {
var matches = this._el.style[prop].match(re);
p.from = parseFloat(matches[0]);
p.unit = matches[1];
}
p.to = props[prop];
this._props[prop] = p;
}
}
clearInterval(this._timer);
this._timer = setInterval(this._step, this._interval);
this._startTime = L.Transition.getTime();
},
_step: function () {
var time = L.Transition.getTime(),
elapsed = time - this._startTime,
duration = this.options.duration * 1000;
if (elapsed < duration) {
this._runFrame(this._cubicBezier(elapsed / duration));
} else {
this._runFrame(1);
this._complete();
}
},
_runFrame: function (percentComplete) {
var setters = L.Transition.CUSTOM_PROPS_SETTERS,
prop, p, value;
for (prop in this._props) {
if (this._props.hasOwnProperty(prop)) {
p = this._props[prop];
if (prop in setters) {
value = p.to.subtract(p.from).multiplyBy(percentComplete).add(p.from);
setters[prop](this._el, value);
} else {
this._el.style[prop] =
((p.to - p.from) * percentComplete + p.from) + p.unit;
}
}
}
this.fire('step');
},
_complete: function () {
clearInterval(this._timer);
this.fire('end');
},
_cubicBezier: function (t) {
var a = Math.pow(1 - t, 3),
b = 3 * Math.pow(1 - t, 2) * t,
c = 3 * (1 - t) * Math.pow(t, 2),
d = Math.pow(t, 3),
p1 = this._p1.multiplyBy(a),
p2 = this._p2.multiplyBy(b),
p3 = this._p3.multiplyBy(c),
p4 = this._p4.multiplyBy(d);
return p1.add(p2).add(p3).add(p4).y;
}
});
L.Map.include(!(L.Transition && L.Transition.implemented()) ? {} : {
setView: function (center, zoom, forceReset) {
zoom = this._limitZoom(zoom);
var zoomChanged = (this._zoom !== zoom);
if (this._loaded && !forceReset && this._layers) {
// difference between the new and current centers in pixels
var offset = this._getNewTopLeftPoint(center).subtract(this._getTopLeftPoint());
center = new L.LatLng(center.lat, center.lng);
var done = (zoomChanged ?
!!this._zoomToIfCenterInView && this._zoomToIfCenterInView(center, zoom, offset) :
this._panByIfClose(offset));
// exit if animated pan or zoom started
if (done) {
return this;
}
}
// reset the map view
this._resetView(center, zoom);
return this;
},
panBy: function (offset) {
if (!(offset.x || offset.y)) {
return this;
}
if (!this._panTransition) {
this._panTransition = new L.Transition(this._mapPane, {duration: 0.3});
this._panTransition.on('step', this._onPanTransitionStep, this);
this._panTransition.on('end', this._onPanTransitionEnd, this);
}
this.fire('movestart');
this._panTransition.run({
position: L.DomUtil.getPosition(this._mapPane).subtract(offset)
});
return this;
},
_onPanTransitionStep: function () {
this.fire('move');
},
_onPanTransitionEnd: function () {
this.fire('moveend');
},
_panByIfClose: function (offset) {
if (this._offsetIsWithinView(offset)) {
this.panBy(offset);
return true;
}
return false;
},
_offsetIsWithinView: function (offset, multiplyFactor) {
var m = multiplyFactor || 1,
size = this.getSize();
return (Math.abs(offset.x) <= size.x * m) &&
(Math.abs(offset.y) <= size.y * m);
}
});
L.Map.include(!L.DomUtil.TRANSITION ? {} : {
_zoomToIfCenterInView: function (center, zoom, centerOffset) {
if (this._animatingZoom) {
return true;
}
if (!this.options.zoomAnimation) {
return false;
}
var zoomDelta = zoom - this._zoom,
scale = Math.pow(2, zoomDelta),
offset = centerOffset.divideBy(1 - 1 / scale);
//if offset does not exceed half of the view
if (!this._offsetIsWithinView(offset, 1)) {
return false;
}
this._mapPane.className += ' leaflet-zoom-anim';
this
.fire('movestart')
.fire('zoomstart');
var centerPoint = this.containerPointToLayerPoint(this.getSize().divideBy(2)),
origin = centerPoint.add(offset);
this._prepareTileBg();
this._runAnimation(center, zoom, scale, origin);
return true;
},
_runAnimation: function (center, zoom, scale, origin) {
this._animatingZoom = true;
this._animateToCenter = center;
this._animateToZoom = zoom;
var transform = L.DomUtil.TRANSFORM;
clearTimeout(this._clearTileBgTimer);
//dumb FireFox hack, I have no idea why this magic zero translate fixes the scale transition problem
if (L.Browser.gecko || window.opera) {
this._tileBg.style[transform] += ' translate(0,0)';
}
var scaleStr;
// Android doesn't like translate/scale chains, transformOrigin + scale works better but
// it breaks touch zoom which Anroid doesn't support anyway, so that's a really ugly hack
// TODO work around this prettier
if (L.Browser.android) {
this._tileBg.style[transform + 'Origin'] = origin.x + 'px ' + origin.y + 'px';
scaleStr = 'scale(' + scale + ')';
} else {
scaleStr = L.DomUtil.getScaleString(scale, origin);
}
L.Util.falseFn(this._tileBg.offsetWidth); //hack to make sure transform is updated before running animation
var options = {};
options[transform] = this._tileBg.style[transform] + ' ' + scaleStr;
this._tileBg.transition.run(options);
},
_prepareTileBg: function () {
if (!this._tileBg) {
this._tileBg = this._createPane('leaflet-tile-pane', this._mapPane);
this._tileBg.style.zIndex = 1;
}
var tilePane = this._tilePane,
tileBg = this._tileBg;
// prepare the background pane to become the main tile pane
//tileBg.innerHTML = '';
tileBg.style[L.DomUtil.TRANSFORM] = '';
tileBg.style.visibility = 'hidden';
// tells tile layers to reinitialize their containers
tileBg.empty = true;
tilePane.empty = false;
this._tilePane = this._panes.tilePane = tileBg;
this._tileBg = tilePane;
if (!this._tileBg.transition) {
this._tileBg.transition = new L.Transition(this._tileBg, {duration: 0.3, easing: 'cubic-bezier(0.25,0.1,0.25,0.75)'});
this._tileBg.transition.on('end', this._onZoomTransitionEnd, this);
}
this._stopLoadingBgTiles();
},
// stops loading all tiles in the background layer
_stopLoadingBgTiles: function () {
var tiles = [].slice.call(this._tileBg.getElementsByTagName('img'));
for (var i = 0, len = tiles.length; i < len; i++) {
if (!tiles[i].complete) {
tiles[i].onload = L.Util.falseFn;
tiles[i].onerror = L.Util.falseFn;
tiles[i].src = 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=';
tiles[i].parentNode.removeChild(tiles[i]);
tiles[i] = null;
}
}
},
_onZoomTransitionEnd: function () {
this._restoreTileFront();
L.Util.falseFn(this._tileBg.offsetWidth);
this._resetView(this._animateToCenter, this._animateToZoom, true, true);
this._mapPane.className = this._mapPane.className.replace(' leaflet-zoom-anim', ''); //TODO toggleClass util
this._animatingZoom = false;
},
_restoreTileFront: function () {
this._tilePane.innerHTML = '';
this._tilePane.style.visibility = '';
this._tilePane.style.zIndex = 2;
this._tileBg.style.zIndex = 1;
},
_clearTileBg: function () {
if (!this._animatingZoom && !this.touchZoom._zooming) {
this._tileBg.innerHTML = '';
}
}
});
/*
* Provides L.Map with convenient shortcuts for W3C geolocation.
*/
L.Map.include({
locate: function (/*Object*/ options) {
this._locationOptions = options = L.Util.extend({
watch: false,
setView: false,
maxZoom: Infinity,
timeout: 10000,
maximumAge: 0,
enableHighAccuracy: false
}, options);
if (!navigator.geolocation) {
return this.fire('locationerror', {
code: 0,
message: "Geolocation not supported."
});
}
var onResponse = L.Util.bind(this._handleGeolocationResponse, this),
onError = L.Util.bind(this._handleGeolocationError, this);
if (options.watch) {
this._locationWatchId = navigator.geolocation.watchPosition(onResponse, onError, options);
} else {
navigator.geolocation.getCurrentPosition(onResponse, onError, options);
}
return this;
},
stopLocate: function () {
if (navigator.geolocation) {
navigator.geolocation.clearWatch(this._locationWatchId);
}
},
locateAndSetView: function (maxZoom, options) {
options = L.Util.extend({
maxZoom: maxZoom || Infinity,
setView: true
}, options);
return this.locate(options);
},
_handleGeolocationError: function (error) {
var c = error.code,
message = (c === 1 ? "permission denied" :
(c === 2 ? "position unavailable" : "timeout"));
if (this._locationOptions.setView && !this._loaded) {
this.fitWorld();
}
this.fire('locationerror', {
code: c,
message: "Geolocation error: " + message + "."
});
},
_handleGeolocationResponse: function (pos) {
var latAccuracy = 180 * pos.coords.accuracy / 4e7,
lngAccuracy = latAccuracy * 2,
lat = pos.coords.latitude,
lng = pos.coords.longitude,
latlng = new L.LatLng(lat, lng);
var sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy),
ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy),
bounds = new L.LatLngBounds(sw, ne);
if (this._locationOptions.setView) {
var zoom = Math.min(this.getBoundsZoom(bounds), this._locationOptions.maxZoom);
this.setView(latlng, zoom);
}
this.fire('locationfound', {
latlng: latlng,
bounds: bounds,
accuracy: pos.coords.accuracy
});
}
});