Non puoi selezionare più di 25 argomenti
Gli argomenti devono iniziare con una lettera o un numero, possono includere trattini ('-') e possono essere lunghi fino a 35 caratteri.
8339 righe
188 KiB
8339 righe
188 KiB
/* |
|
Leaflet, a JavaScript library for mobile-friendly interactive maps. http://leafletjs.com |
|
(c) 2010-2013, Vladimir Agafonkin, CloudMade |
|
*/ |
|
(function (window, document, undefined) {/* |
|
* The L namespace contains all Leaflet classes and functions. |
|
* This code allows you to handle any possible namespace conflicts. |
|
*/ |
|
|
|
var L, originalL; |
|
|
|
if (typeof exports !== undefined + '') { |
|
L = exports; |
|
} else { |
|
originalL = window.L; |
|
L = {}; |
|
|
|
L.noConflict = function () { |
|
window.L = originalL; |
|
return this; |
|
}; |
|
|
|
window.L = L; |
|
} |
|
|
|
L.version = '0.5.1'; |
|
|
|
|
|
/* |
|
* L.Util contains various utility functions used throughout Leaflet code. |
|
*/ |
|
|
|
L.Util = { |
|
extend: function (dest) { // (Object[, Object, ...]) -> |
|
var sources = Array.prototype.slice.call(arguments, 1), |
|
i, j, len, src; |
|
|
|
for (j = 0, len = sources.length; j < len; j++) { |
|
src = sources[j] || {}; |
|
for (i in src) { |
|
if (src.hasOwnProperty(i)) { |
|
dest[i] = src[i]; |
|
} |
|
} |
|
} |
|
return dest; |
|
}, |
|
|
|
bind: function (fn, obj) { // (Function, Object) -> Function |
|
var args = arguments.length > 2 ? Array.prototype.slice.call(arguments, 2) : null; |
|
return function () { |
|
return fn.apply(obj, args || arguments); |
|
}; |
|
}, |
|
|
|
stamp: (function () { |
|
var lastId = 0, key = '_leaflet_id'; |
|
return function (/*Object*/ obj) { |
|
obj[key] = obj[key] || ++lastId; |
|
return obj[key]; |
|
}; |
|
}()), |
|
|
|
limitExecByInterval: function (fn, time, context) { |
|
var lock, execOnUnlock; |
|
|
|
return function wrapperFn() { |
|
var args = arguments; |
|
|
|
if (lock) { |
|
execOnUnlock = true; |
|
return; |
|
} |
|
|
|
lock = true; |
|
|
|
setTimeout(function () { |
|
lock = false; |
|
|
|
if (execOnUnlock) { |
|
wrapperFn.apply(context, args); |
|
execOnUnlock = false; |
|
} |
|
}, time); |
|
|
|
fn.apply(context, args); |
|
}; |
|
}, |
|
|
|
falseFn: function () { |
|
return false; |
|
}, |
|
|
|
formatNum: function (num, digits) { |
|
var pow = Math.pow(10, digits || 5); |
|
return Math.round(num * pow) / pow; |
|
}, |
|
|
|
splitWords: function (str) { |
|
return str.replace(/^\s+|\s+$/g, '').split(/\s+/); |
|
}, |
|
|
|
setOptions: function (obj, options) { |
|
obj.options = L.extend({}, obj.options, options); |
|
return obj.options; |
|
}, |
|
|
|
getParamString: function (obj, existingUrl) { |
|
var params = []; |
|
for (var i in obj) { |
|
if (obj.hasOwnProperty(i)) { |
|
params.push(i + '=' + obj[i]); |
|
} |
|
} |
|
return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&'); |
|
}, |
|
|
|
template: function (str, data) { |
|
return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) { |
|
var value = data[key]; |
|
if (!data.hasOwnProperty(key)) { |
|
throw new Error('No value provided for variable ' + str); |
|
} |
|
return value; |
|
}); |
|
}, |
|
|
|
isArray: function (obj) { |
|
return (Object.prototype.toString.call(obj) === '[object Array]'); |
|
}, |
|
|
|
emptyImageUrl: 'data:image/gif;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=' |
|
}; |
|
|
|
(function () { |
|
|
|
// inspired by http://paulirish.com/2011/requestanimationframe-for-smart-animating/ |
|
|
|
function getPrefixed(name) { |
|
var i, fn, |
|
prefixes = ['webkit', 'moz', 'o', 'ms']; |
|
|
|
for (i = 0; i < prefixes.length && !fn; i++) { |
|
fn = window[prefixes[i] + name]; |
|
} |
|
|
|
return fn; |
|
} |
|
|
|
var lastTime = 0; |
|
|
|
function timeoutDefer(fn) { |
|
var time = +new Date(), |
|
timeToCall = Math.max(0, 16 - (time - lastTime)); |
|
|
|
lastTime = time + timeToCall; |
|
return window.setTimeout(fn, timeToCall); |
|
} |
|
|
|
var requestFn = window.requestAnimationFrame || |
|
getPrefixed('RequestAnimationFrame') || timeoutDefer; |
|
|
|
var cancelFn = window.cancelAnimationFrame || |
|
getPrefixed('CancelAnimationFrame') || |
|
getPrefixed('CancelRequestAnimationFrame') || |
|
function (id) { window.clearTimeout(id); }; |
|
|
|
|
|
L.Util.requestAnimFrame = function (fn, context, immediate, element) { |
|
fn = L.bind(fn, context); |
|
|
|
if (immediate && requestFn === timeoutDefer) { |
|
fn(); |
|
} else { |
|
return requestFn.call(window, fn, element); |
|
} |
|
}; |
|
|
|
L.Util.cancelAnimFrame = function (id) { |
|
if (id) { |
|
cancelFn.call(window, id); |
|
} |
|
}; |
|
|
|
}()); |
|
|
|
// shortcuts for most used utility functions |
|
L.extend = L.Util.extend; |
|
L.bind = L.Util.bind; |
|
L.stamp = L.Util.stamp; |
|
L.setOptions = L.Util.setOptions; |
|
|
|
|
|
/* |
|
* L.Class powers the OOP facilities of the library. |
|
* Thanks to John Resig and Dean Edwards for inspiration! |
|
*/ |
|
|
|
L.Class = function () {}; |
|
|
|
L.Class.extend = function (props) { |
|
|
|
// extended class with the new prototype |
|
var NewClass = function () { |
|
|
|
// call the constructor |
|
if (this.initialize) { |
|
this.initialize.apply(this, arguments); |
|
} |
|
|
|
// call all constructor hooks |
|
if (this._initHooks) { |
|
this.callInitHooks(); |
|
} |
|
}; |
|
|
|
// instantiate class without calling constructor |
|
var F = function () {}; |
|
F.prototype = this.prototype; |
|
|
|
var proto = new F(); |
|
proto.constructor = NewClass; |
|
|
|
NewClass.prototype = proto; |
|
|
|
//inherit parent's statics |
|
for (var i in this) { |
|
if (this.hasOwnProperty(i) && i !== 'prototype') { |
|
NewClass[i] = this[i]; |
|
} |
|
} |
|
|
|
// mix static properties into the class |
|
if (props.statics) { |
|
L.extend(NewClass, props.statics); |
|
delete props.statics; |
|
} |
|
|
|
// mix includes into the prototype |
|
if (props.includes) { |
|
L.Util.extend.apply(null, [proto].concat(props.includes)); |
|
delete props.includes; |
|
} |
|
|
|
// merge options |
|
if (props.options && proto.options) { |
|
props.options = L.extend({}, proto.options, props.options); |
|
} |
|
|
|
// mix given properties into the prototype |
|
L.extend(proto, props); |
|
|
|
proto._initHooks = []; |
|
|
|
var parent = this; |
|
// add method for calling all hooks |
|
proto.callInitHooks = function () { |
|
|
|
if (this._initHooksCalled) { return; } |
|
|
|
if (parent.prototype.callInitHooks) { |
|
parent.prototype.callInitHooks.call(this); |
|
} |
|
|
|
this._initHooksCalled = true; |
|
|
|
for (var i = 0, len = proto._initHooks.length; i < len; i++) { |
|
proto._initHooks[i].call(this); |
|
} |
|
}; |
|
|
|
return NewClass; |
|
}; |
|
|
|
|
|
// method for adding properties to prototype |
|
L.Class.include = function (props) { |
|
L.extend(this.prototype, props); |
|
}; |
|
|
|
// merge new default options to the Class |
|
L.Class.mergeOptions = function (options) { |
|
L.extend(this.prototype.options, options); |
|
}; |
|
|
|
// add a constructor hook |
|
L.Class.addInitHook = function (fn) { // (Function) || (String, args...) |
|
var args = Array.prototype.slice.call(arguments, 1); |
|
|
|
var init = typeof fn === 'function' ? fn : function () { |
|
this[fn].apply(this, args); |
|
}; |
|
|
|
this.prototype._initHooks = this.prototype._initHooks || []; |
|
this.prototype._initHooks.push(init); |
|
}; |
|
|
|
|
|
/* |
|
* L.Mixin.Events is used to add custom events functionality to Leaflet classes. |
|
*/ |
|
|
|
var key = '_leaflet_events'; |
|
|
|
L.Mixin = {}; |
|
|
|
L.Mixin.Events = { |
|
|
|
addEventListener: function (types, fn, context) { // (String, Function[, Object]) or (Object[, Object]) |
|
var events = this[key] = this[key] || {}, |
|
type, i, len; |
|
|
|
// Types can be a map of types/handlers |
|
if (typeof types === 'object') { |
|
for (type in types) { |
|
if (types.hasOwnProperty(type)) { |
|
this.addEventListener(type, types[type], fn); |
|
} |
|
} |
|
|
|
return this; |
|
} |
|
|
|
types = L.Util.splitWords(types); |
|
|
|
for (i = 0, len = types.length; i < len; i++) { |
|
events[types[i]] = events[types[i]] || []; |
|
events[types[i]].push({ |
|
action: fn, |
|
context: context || this |
|
}); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
hasEventListeners: function (type) { // (String) -> Boolean |
|
return (key in this) && (type in this[key]) && (this[key][type].length > 0); |
|
}, |
|
|
|
removeEventListener: function (types, fn, context) { // (String[, Function, Object]) or (Object[, Object]) |
|
var events = this[key], |
|
type, i, len, listeners, j; |
|
|
|
if (typeof types === 'object') { |
|
for (type in types) { |
|
if (types.hasOwnProperty(type)) { |
|
this.removeEventListener(type, types[type], fn); |
|
} |
|
} |
|
|
|
return this; |
|
} |
|
|
|
types = L.Util.splitWords(types); |
|
|
|
for (i = 0, len = types.length; i < len; i++) { |
|
|
|
if (this.hasEventListeners(types[i])) { |
|
listeners = events[types[i]]; |
|
|
|
for (j = listeners.length - 1; j >= 0; j--) { |
|
if ( |
|
(!fn || listeners[j].action === fn) && |
|
(!context || (listeners[j].context === context)) |
|
) { |
|
listeners.splice(j, 1); |
|
} |
|
} |
|
} |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
fireEvent: function (type, data) { // (String[, Object]) |
|
if (!this.hasEventListeners(type)) { |
|
return this; |
|
} |
|
|
|
var event = L.extend({ |
|
type: type, |
|
target: this |
|
}, data); |
|
|
|
var listeners = this[key][type].slice(); |
|
|
|
for (var i = 0, len = listeners.length; i < len; i++) { |
|
listeners[i].action.call(listeners[i].context || this, event); |
|
} |
|
|
|
return this; |
|
} |
|
}; |
|
|
|
L.Mixin.Events.on = L.Mixin.Events.addEventListener; |
|
L.Mixin.Events.off = L.Mixin.Events.removeEventListener; |
|
L.Mixin.Events.fire = L.Mixin.Events.fireEvent; |
|
|
|
|
|
/* |
|
* L.Browser handles different browser and feature detections for internal Leaflet use. |
|
*/ |
|
|
|
(function () { |
|
|
|
var ie = !!window.ActiveXObject, |
|
ie6 = ie && !window.XMLHttpRequest, |
|
ie7 = ie && !document.querySelector, |
|
|
|
// terrible browser detection to work around Safari / iOS / Android browser bugs |
|
ua = navigator.userAgent.toLowerCase(), |
|
webkit = ua.indexOf('webkit') !== -1, |
|
chrome = ua.indexOf('chrome') !== -1, |
|
android = ua.indexOf('android') !== -1, |
|
android23 = ua.search('android [23]') !== -1, |
|
|
|
mobile = typeof orientation !== undefined + '', |
|
msTouch = window.navigator && window.navigator.msPointerEnabled && |
|
window.navigator.msMaxTouchPoints, |
|
retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) || |
|
('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') && |
|
window.matchMedia('(min-resolution:144dpi)').matches), |
|
|
|
doc = document.documentElement, |
|
ie3d = ie && ('transition' in doc.style), |
|
webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()), |
|
gecko3d = 'MozPerspective' in doc.style, |
|
opera3d = 'OTransition' in doc.style, |
|
any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d); |
|
|
|
|
|
var touch = !window.L_NO_TOUCH && (function () { |
|
|
|
var startName = 'ontouchstart'; |
|
|
|
// IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.MsTouch) or WebKit, etc. |
|
if (msTouch || (startName in doc)) { |
|
return true; |
|
} |
|
|
|
// Firefox/Gecko |
|
var div = document.createElement('div'), |
|
supported = false; |
|
|
|
if (!div.setAttribute) { |
|
return false; |
|
} |
|
div.setAttribute(startName, 'return;'); |
|
|
|
if (typeof div[startName] === 'function') { |
|
supported = true; |
|
} |
|
|
|
div.removeAttribute(startName); |
|
div = null; |
|
|
|
return supported; |
|
}()); |
|
|
|
|
|
L.Browser = { |
|
ie: ie, |
|
ie6: ie6, |
|
ie7: ie7, |
|
webkit: webkit, |
|
|
|
android: android, |
|
android23: android23, |
|
|
|
chrome: chrome, |
|
|
|
ie3d: ie3d, |
|
webkit3d: webkit3d, |
|
gecko3d: gecko3d, |
|
opera3d: opera3d, |
|
any3d: any3d, |
|
|
|
mobile: mobile, |
|
mobileWebkit: mobile && webkit, |
|
mobileWebkit3d: mobile && webkit3d, |
|
mobileOpera: mobile && window.opera, |
|
|
|
touch: touch, |
|
msTouch: msTouch, |
|
|
|
retina: retina |
|
}; |
|
|
|
}()); |
|
|
|
|
|
/* |
|
* L.Point represents a point with x and y coordinates. |
|
*/ |
|
|
|
L.Point = function (/*Number*/ x, /*Number*/ y, /*Boolean*/ round) { |
|
this.x = (round ? Math.round(x) : x); |
|
this.y = (round ? Math.round(y) : y); |
|
}; |
|
|
|
L.Point.prototype = { |
|
|
|
clone: function () { |
|
return new L.Point(this.x, this.y); |
|
}, |
|
|
|
// non-destructive, returns a new point |
|
add: function (point) { |
|
return this.clone()._add(L.point(point)); |
|
}, |
|
|
|
// destructive, used directly for performance in situations where it's safe to modify existing point |
|
_add: function (point) { |
|
this.x += point.x; |
|
this.y += point.y; |
|
return this; |
|
}, |
|
|
|
subtract: function (point) { |
|
return this.clone()._subtract(L.point(point)); |
|
}, |
|
|
|
_subtract: function (point) { |
|
this.x -= point.x; |
|
this.y -= point.y; |
|
return this; |
|
}, |
|
|
|
divideBy: function (num) { |
|
return this.clone()._divideBy(num); |
|
}, |
|
|
|
_divideBy: function (num) { |
|
this.x /= num; |
|
this.y /= num; |
|
return this; |
|
}, |
|
|
|
multiplyBy: function (num) { |
|
return this.clone()._multiplyBy(num); |
|
}, |
|
|
|
_multiplyBy: function (num) { |
|
this.x *= num; |
|
this.y *= num; |
|
return this; |
|
}, |
|
|
|
round: function () { |
|
return this.clone()._round(); |
|
}, |
|
|
|
_round: function () { |
|
this.x = Math.round(this.x); |
|
this.y = Math.round(this.y); |
|
return this; |
|
}, |
|
|
|
floor: function () { |
|
return this.clone()._floor(); |
|
}, |
|
|
|
_floor: function () { |
|
this.x = Math.floor(this.x); |
|
this.y = Math.floor(this.y); |
|
return this; |
|
}, |
|
|
|
distanceTo: function (point) { |
|
point = L.point(point); |
|
|
|
var x = point.x - this.x, |
|
y = point.y - this.y; |
|
|
|
return Math.sqrt(x * x + y * y); |
|
}, |
|
|
|
equals: function (point) { |
|
return point.x === this.x && |
|
point.y === this.y; |
|
}, |
|
|
|
toString: function () { |
|
return 'Point(' + |
|
L.Util.formatNum(this.x) + ', ' + |
|
L.Util.formatNum(this.y) + ')'; |
|
} |
|
}; |
|
|
|
L.point = function (x, y, round) { |
|
if (x instanceof L.Point) { |
|
return x; |
|
} |
|
if (L.Util.isArray(x)) { |
|
return new L.Point(x[0], x[1]); |
|
} |
|
if (isNaN(x)) { |
|
return x; |
|
} |
|
return new L.Point(x, y, round); |
|
}; |
|
|
|
|
|
/* |
|
* L.Bounds represents a rectangular area on the screen in pixel coordinates. |
|
*/ |
|
|
|
L.Bounds = function (a, b) { //(Point, Point) or Point[] |
|
if (!a) { return; } |
|
|
|
var points = b ? [a, b] : a; |
|
|
|
for (var i = 0, len = points.length; i < len; i++) { |
|
this.extend(points[i]); |
|
} |
|
}; |
|
|
|
L.Bounds.prototype = { |
|
// extend the bounds to contain the given point |
|
extend: function (point) { // (Point) |
|
point = L.point(point); |
|
|
|
if (!this.min && !this.max) { |
|
this.min = point.clone(); |
|
this.max = point.clone(); |
|
} else { |
|
this.min.x = Math.min(point.x, this.min.x); |
|
this.max.x = Math.max(point.x, this.max.x); |
|
this.min.y = Math.min(point.y, this.min.y); |
|
this.max.y = Math.max(point.y, this.max.y); |
|
} |
|
return this; |
|
}, |
|
|
|
getCenter: function (round) { // (Boolean) -> Point |
|
return new L.Point( |
|
(this.min.x + this.max.x) / 2, |
|
(this.min.y + this.max.y) / 2, round); |
|
}, |
|
|
|
getBottomLeft: function () { // -> Point |
|
return new L.Point(this.min.x, this.max.y); |
|
}, |
|
|
|
getTopRight: function () { // -> Point |
|
return new L.Point(this.max.x, this.min.y); |
|
}, |
|
|
|
getSize: function () { |
|
return this.max.subtract(this.min); |
|
}, |
|
|
|
contains: function (obj) { // (Bounds) or (Point) -> Boolean |
|
var min, max; |
|
|
|
if (typeof obj[0] === 'number' || obj instanceof L.Point) { |
|
obj = L.point(obj); |
|
} else { |
|
obj = L.bounds(obj); |
|
} |
|
|
|
if (obj instanceof L.Bounds) { |
|
min = obj.min; |
|
max = obj.max; |
|
} else { |
|
min = max = obj; |
|
} |
|
|
|
return (min.x >= this.min.x) && |
|
(max.x <= this.max.x) && |
|
(min.y >= this.min.y) && |
|
(max.y <= this.max.y); |
|
}, |
|
|
|
intersects: function (bounds) { // (Bounds) -> Boolean |
|
bounds = L.bounds(bounds); |
|
|
|
var min = this.min, |
|
max = this.max, |
|
min2 = bounds.min, |
|
max2 = bounds.max, |
|
xIntersects = (max2.x >= min.x) && (min2.x <= max.x), |
|
yIntersects = (max2.y >= min.y) && (min2.y <= max.y); |
|
|
|
return xIntersects && yIntersects; |
|
}, |
|
|
|
isValid: function () { |
|
return !!(this.min && this.max); |
|
} |
|
}; |
|
|
|
L.bounds = function (a, b) { // (Bounds) or (Point, Point) or (Point[]) |
|
if (!a || a instanceof L.Bounds) { |
|
return a; |
|
} |
|
return new L.Bounds(a, b); |
|
}; |
|
|
|
|
|
/* |
|
* L.Transformation is an utility class to perform simple point transformations through a 2d-matrix. |
|
*/ |
|
|
|
L.Transformation = function (a, b, c, d) { |
|
this._a = a; |
|
this._b = b; |
|
this._c = c; |
|
this._d = d; |
|
}; |
|
|
|
L.Transformation.prototype = { |
|
transform: function (point, scale) { // (Point, Number) -> Point |
|
return this._transform(point.clone(), scale); |
|
}, |
|
|
|
// destructive transform (faster) |
|
_transform: function (point, scale) { |
|
scale = scale || 1; |
|
point.x = scale * (this._a * point.x + this._b); |
|
point.y = scale * (this._c * point.y + this._d); |
|
return point; |
|
}, |
|
|
|
untransform: function (point, scale) { |
|
scale = scale || 1; |
|
return new L.Point( |
|
(point.x / scale - this._b) / this._a, |
|
(point.y / scale - this._d) / this._c); |
|
} |
|
}; |
|
|
|
|
|
/* |
|
* L.DomUtil contains various utility functions for working with DOM. |
|
*/ |
|
|
|
L.DomUtil = { |
|
get: function (id) { |
|
return (typeof id === 'string' ? document.getElementById(id) : id); |
|
}, |
|
|
|
getStyle: function (el, style) { |
|
|
|
var value = el.style[style]; |
|
|
|
if (!value && el.currentStyle) { |
|
value = el.currentStyle[style]; |
|
} |
|
|
|
if ((!value || value === 'auto') && document.defaultView) { |
|
var css = document.defaultView.getComputedStyle(el, null); |
|
value = css ? css[style] : null; |
|
} |
|
|
|
return value === 'auto' ? null : value; |
|
}, |
|
|
|
getViewportOffset: function (element) { |
|
|
|
var top = 0, |
|
left = 0, |
|
el = element, |
|
docBody = document.body, |
|
pos, |
|
ie7 = L.Browser.ie7; |
|
|
|
do { |
|
top += el.offsetTop || 0; |
|
left += el.offsetLeft || 0; |
|
|
|
//add borders |
|
top += parseInt(L.DomUtil.getStyle(el, "borderTopWidth"), 10) || 0; |
|
left += parseInt(L.DomUtil.getStyle(el, "borderLeftWidth"), 10) || 0; |
|
|
|
pos = L.DomUtil.getStyle(el, 'position'); |
|
|
|
if (el.offsetParent === docBody && pos === 'absolute') { break; } |
|
|
|
if (pos === 'fixed') { |
|
top += docBody.scrollTop || 0; |
|
left += docBody.scrollLeft || 0; |
|
break; |
|
} |
|
el = el.offsetParent; |
|
|
|
} while (el); |
|
|
|
el = element; |
|
|
|
do { |
|
if (el === docBody) { break; } |
|
|
|
top -= el.scrollTop || 0; |
|
left -= el.scrollLeft || 0; |
|
|
|
// webkit (and ie <= 7) handles RTL scrollLeft different to everyone else |
|
// https://code.google.com/p/closure-library/source/browse/trunk/closure/goog/style/bidi.js |
|
if (!L.DomUtil.documentIsLtr() && (L.Browser.webkit || ie7)) { |
|
left += el.scrollWidth - el.clientWidth; |
|
|
|
// ie7 shows the scrollbar by default and provides clientWidth counting it, so we |
|
// need to add it back in if it is visible; scrollbar is on the left as we are RTL |
|
if (ie7 && L.DomUtil.getStyle(el, 'overflow-y') !== 'hidden' && |
|
L.DomUtil.getStyle(el, 'overflow') !== 'hidden') { |
|
left += 17; |
|
} |
|
} |
|
|
|
el = el.parentNode; |
|
} while (el); |
|
|
|
return new L.Point(left, top); |
|
}, |
|
|
|
documentIsLtr: function () { |
|
if (!L.DomUtil._docIsLtrCached) { |
|
L.DomUtil._docIsLtrCached = true; |
|
L.DomUtil._docIsLtr = L.DomUtil.getStyle(document.body, 'direction') === "ltr"; |
|
} |
|
return L.DomUtil._docIsLtr; |
|
}, |
|
|
|
create: function (tagName, className, container) { |
|
|
|
var el = document.createElement(tagName); |
|
el.className = className; |
|
|
|
if (container) { |
|
container.appendChild(el); |
|
} |
|
|
|
return el; |
|
}, |
|
|
|
disableTextSelection: function () { |
|
if (document.selection && document.selection.empty) { |
|
document.selection.empty(); |
|
} |
|
if (!this._onselectstart) { |
|
this._onselectstart = document.onselectstart || null; |
|
document.onselectstart = L.Util.falseFn; |
|
} |
|
}, |
|
|
|
enableTextSelection: function () { |
|
if (document.onselectstart === L.Util.falseFn) { |
|
document.onselectstart = this._onselectstart; |
|
this._onselectstart = null; |
|
} |
|
}, |
|
|
|
hasClass: function (el, name) { |
|
return (el.className.length > 0) && |
|
new RegExp("(^|\\s)" + name + "(\\s|$)").test(el.className); |
|
}, |
|
|
|
addClass: function (el, name) { |
|
if (!L.DomUtil.hasClass(el, name)) { |
|
el.className += (el.className ? ' ' : '') + name; |
|
} |
|
}, |
|
|
|
removeClass: function (el, name) { |
|
|
|
function replaceFn(w, match) { |
|
if (match === name) { return ''; } |
|
return w; |
|
} |
|
|
|
el.className = el.className |
|
.replace(/(\S+)\s*/g, replaceFn) |
|
.replace(/(^\s+|\s+$)/, ''); |
|
}, |
|
|
|
setOpacity: function (el, value) { |
|
|
|
if ('opacity' in el.style) { |
|
el.style.opacity = value; |
|
|
|
} else if ('filter' in el.style) { |
|
|
|
var filter = false, |
|
filterName = 'DXImageTransform.Microsoft.Alpha'; |
|
|
|
// filters collection throws an error if we try to retrieve a filter that doesn't exist |
|
try { filter = el.filters.item(filterName); } catch (e) {} |
|
|
|
value = Math.round(value * 100); |
|
|
|
if (filter) { |
|
filter.Enabled = (value !== 100); |
|
filter.Opacity = value; |
|
} else { |
|
el.style.filter += ' progid:' + filterName + '(opacity=' + value + ')'; |
|
} |
|
} |
|
}, |
|
|
|
testProp: function (props) { |
|
|
|
var style = document.documentElement.style; |
|
|
|
for (var i = 0; i < props.length; i++) { |
|
if (props[i] in style) { |
|
return props[i]; |
|
} |
|
} |
|
return false; |
|
}, |
|
|
|
getTranslateString: function (point) { |
|
// on WebKit browsers (Chrome/Safari/iOS Safari/Android) using translate3d instead of translate |
|
// makes animation smoother as it ensures HW accel is used. Firefox 13 doesn't care |
|
// (same speed either way), Opera 12 doesn't support translate3d |
|
|
|
var is3d = L.Browser.webkit3d, |
|
open = 'translate' + (is3d ? '3d' : '') + '(', |
|
close = (is3d ? ',0' : '') + ')'; |
|
|
|
return open + point.x + 'px,' + point.y + 'px' + close; |
|
}, |
|
|
|
getScaleString: function (scale, origin) { |
|
|
|
var preTranslateStr = L.DomUtil.getTranslateString(origin.add(origin.multiplyBy(-1 * scale))), |
|
scaleStr = ' scale(' + scale + ') '; |
|
|
|
return preTranslateStr + scaleStr; |
|
}, |
|
|
|
setPosition: function (el, point, disable3D) { // (HTMLElement, Point[, Boolean]) |
|
|
|
el._leaflet_pos = point; |
|
|
|
if (!disable3D && L.Browser.any3d) { |
|
el.style[L.DomUtil.TRANSFORM] = L.DomUtil.getTranslateString(point); |
|
|
|
// workaround for Android 2/3 stability (https://github.com/CloudMade/Leaflet/issues/69) |
|
if (L.Browser.mobileWebkit3d) { |
|
el.style.WebkitBackfaceVisibility = 'hidden'; |
|
} |
|
} else { |
|
el.style.left = point.x + 'px'; |
|
el.style.top = point.y + 'px'; |
|
} |
|
}, |
|
|
|
getPosition: function (el) { |
|
// this method is only used for elements previously positioned using setPosition, |
|
// so it's safe to cache the position for performance |
|
return el._leaflet_pos; |
|
} |
|
}; |
|
|
|
|
|
// prefix style property names |
|
|
|
L.DomUtil.TRANSFORM = L.DomUtil.testProp( |
|
['transform', 'WebkitTransform', 'OTransform', 'MozTransform', 'msTransform']); |
|
|
|
// webkitTransition comes first because some browser versions that drop vendor prefix don't do |
|
// the same for the transitionend event, in particular the Android 4.1 stock browser |
|
|
|
L.DomUtil.TRANSITION = L.DomUtil.testProp( |
|
['webkitTransition', 'transition', 'OTransition', 'MozTransition', 'msTransition']); |
|
|
|
L.DomUtil.TRANSITION_END = |
|
L.DomUtil.TRANSITION === 'webkitTransition' || L.DomUtil.TRANSITION === 'OTransition' ? |
|
L.DomUtil.TRANSITION + 'End' : 'transitionend'; |
|
|
|
|
|
/* |
|
* L.LatLng represents a geographical point with latitude and longitude coordinates. |
|
*/ |
|
|
|
L.LatLng = function (rawLat, rawLng) { // (Number, Number) |
|
var lat = parseFloat(rawLat), |
|
lng = parseFloat(rawLng); |
|
|
|
if (isNaN(lat) || isNaN(lng)) { |
|
throw new Error('Invalid LatLng object: (' + rawLat + ', ' + rawLng + ')'); |
|
} |
|
|
|
this.lat = lat; |
|
this.lng = lng; |
|
}; |
|
|
|
L.extend(L.LatLng, { |
|
DEG_TO_RAD: Math.PI / 180, |
|
RAD_TO_DEG: 180 / Math.PI, |
|
MAX_MARGIN: 1.0E-9 // max margin of error for the "equals" check |
|
}); |
|
|
|
L.LatLng.prototype = { |
|
equals: function (obj) { // (LatLng) -> Boolean |
|
if (!obj) { return false; } |
|
|
|
obj = L.latLng(obj); |
|
|
|
var margin = Math.max( |
|
Math.abs(this.lat - obj.lat), |
|
Math.abs(this.lng - obj.lng)); |
|
|
|
return margin <= L.LatLng.MAX_MARGIN; |
|
}, |
|
|
|
toString: function (precision) { // (Number) -> String |
|
return 'LatLng(' + |
|
L.Util.formatNum(this.lat, precision) + ', ' + |
|
L.Util.formatNum(this.lng, precision) + ')'; |
|
}, |
|
|
|
// Haversine distance formula, see http://en.wikipedia.org/wiki/Haversine_formula |
|
// TODO move to projection code, LatLng shouldn't know about Earth |
|
distanceTo: function (other) { // (LatLng) -> Number |
|
other = L.latLng(other); |
|
|
|
var R = 6378137, // earth radius in meters |
|
d2r = L.LatLng.DEG_TO_RAD, |
|
dLat = (other.lat - this.lat) * d2r, |
|
dLon = (other.lng - this.lng) * d2r, |
|
lat1 = this.lat * d2r, |
|
lat2 = other.lat * d2r, |
|
sin1 = Math.sin(dLat / 2), |
|
sin2 = Math.sin(dLon / 2); |
|
|
|
var a = sin1 * sin1 + sin2 * sin2 * Math.cos(lat1) * Math.cos(lat2); |
|
|
|
return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); |
|
}, |
|
|
|
wrap: function (a, b) { // (Number, Number) -> LatLng |
|
var lng = this.lng; |
|
|
|
a = a || -180; |
|
b = b || 180; |
|
|
|
lng = (lng + b) % (b - a) + (lng < a || lng === b ? b : a); |
|
|
|
return new L.LatLng(this.lat, lng); |
|
} |
|
}; |
|
|
|
L.latLng = function (a, b) { // (LatLng) or ([Number, Number]) or (Number, Number) |
|
if (a instanceof L.LatLng) { |
|
return a; |
|
} |
|
if (L.Util.isArray(a)) { |
|
return new L.LatLng(a[0], a[1]); |
|
} |
|
if (isNaN(a)) { |
|
return a; |
|
} |
|
return new L.LatLng(a, b); |
|
}; |
|
|
|
|
|
|
|
/* |
|
* L.LatLngBounds represents a rectangular area on the map in geographical coordinates. |
|
*/ |
|
|
|
L.LatLngBounds = function (southWest, northEast) { // (LatLng, LatLng) or (LatLng[]) |
|
if (!southWest) { return; } |
|
|
|
var latlngs = northEast ? [southWest, northEast] : southWest; |
|
|
|
for (var i = 0, len = latlngs.length; i < len; i++) { |
|
this.extend(latlngs[i]); |
|
} |
|
}; |
|
|
|
L.LatLngBounds.prototype = { |
|
// extend the bounds to contain the given point or bounds |
|
extend: function (obj) { // (LatLng) or (LatLngBounds) |
|
if (typeof obj[0] === 'number' || typeof obj[0] === 'string' || obj instanceof L.LatLng) { |
|
obj = L.latLng(obj); |
|
} else { |
|
obj = L.latLngBounds(obj); |
|
} |
|
|
|
if (obj instanceof L.LatLng) { |
|
if (!this._southWest && !this._northEast) { |
|
this._southWest = new L.LatLng(obj.lat, obj.lng); |
|
this._northEast = new L.LatLng(obj.lat, obj.lng); |
|
} else { |
|
this._southWest.lat = Math.min(obj.lat, this._southWest.lat); |
|
this._southWest.lng = Math.min(obj.lng, this._southWest.lng); |
|
|
|
this._northEast.lat = Math.max(obj.lat, this._northEast.lat); |
|
this._northEast.lng = Math.max(obj.lng, this._northEast.lng); |
|
} |
|
} else if (obj instanceof L.LatLngBounds) { |
|
this.extend(obj._southWest); |
|
this.extend(obj._northEast); |
|
} |
|
return this; |
|
}, |
|
|
|
// extend the bounds by a percentage |
|
pad: function (bufferRatio) { // (Number) -> LatLngBounds |
|
var sw = this._southWest, |
|
ne = this._northEast, |
|
heightBuffer = Math.abs(sw.lat - ne.lat) * bufferRatio, |
|
widthBuffer = Math.abs(sw.lng - ne.lng) * bufferRatio; |
|
|
|
return new L.LatLngBounds( |
|
new L.LatLng(sw.lat - heightBuffer, sw.lng - widthBuffer), |
|
new L.LatLng(ne.lat + heightBuffer, ne.lng + widthBuffer)); |
|
}, |
|
|
|
getCenter: function () { // -> LatLng |
|
return new L.LatLng( |
|
(this._southWest.lat + this._northEast.lat) / 2, |
|
(this._southWest.lng + this._northEast.lng) / 2); |
|
}, |
|
|
|
getSouthWest: function () { |
|
return this._southWest; |
|
}, |
|
|
|
getNorthEast: function () { |
|
return this._northEast; |
|
}, |
|
|
|
getNorthWest: function () { |
|
return new L.LatLng(this._northEast.lat, this._southWest.lng); |
|
}, |
|
|
|
getSouthEast: function () { |
|
return new L.LatLng(this._southWest.lat, this._northEast.lng); |
|
}, |
|
|
|
contains: function (obj) { // (LatLngBounds) or (LatLng) -> Boolean |
|
if (typeof obj[0] === 'number' || obj instanceof L.LatLng) { |
|
obj = L.latLng(obj); |
|
} else { |
|
obj = L.latLngBounds(obj); |
|
} |
|
|
|
var sw = this._southWest, |
|
ne = this._northEast, |
|
sw2, ne2; |
|
|
|
if (obj instanceof L.LatLngBounds) { |
|
sw2 = obj.getSouthWest(); |
|
ne2 = obj.getNorthEast(); |
|
} else { |
|
sw2 = ne2 = obj; |
|
} |
|
|
|
return (sw2.lat >= sw.lat) && (ne2.lat <= ne.lat) && |
|
(sw2.lng >= sw.lng) && (ne2.lng <= ne.lng); |
|
}, |
|
|
|
intersects: function (bounds) { // (LatLngBounds) |
|
bounds = L.latLngBounds(bounds); |
|
|
|
var sw = this._southWest, |
|
ne = this._northEast, |
|
sw2 = bounds.getSouthWest(), |
|
ne2 = bounds.getNorthEast(), |
|
|
|
latIntersects = (ne2.lat >= sw.lat) && (sw2.lat <= ne.lat), |
|
lngIntersects = (ne2.lng >= sw.lng) && (sw2.lng <= ne.lng); |
|
|
|
return latIntersects && lngIntersects; |
|
}, |
|
|
|
toBBoxString: function () { |
|
var sw = this._southWest, |
|
ne = this._northEast; |
|
|
|
return [sw.lng, sw.lat, ne.lng, ne.lat].join(','); |
|
}, |
|
|
|
equals: function (bounds) { // (LatLngBounds) |
|
if (!bounds) { return false; } |
|
|
|
bounds = L.latLngBounds(bounds); |
|
|
|
return this._southWest.equals(bounds.getSouthWest()) && |
|
this._northEast.equals(bounds.getNorthEast()); |
|
}, |
|
|
|
isValid: function () { |
|
return !!(this._southWest && this._northEast); |
|
} |
|
}; |
|
|
|
//TODO International date line? |
|
|
|
L.latLngBounds = function (a, b) { // (LatLngBounds) or (LatLng, LatLng) |
|
if (!a || a instanceof L.LatLngBounds) { |
|
return a; |
|
} |
|
return new L.LatLngBounds(a, b); |
|
}; |
|
|
|
|
|
/* |
|
* L.Projection contains various geographical projections used by CRS classes. |
|
*/ |
|
|
|
L.Projection = {}; |
|
|
|
|
|
/* |
|
* Spherical Mercator is the most popular map projection, used by EPSG:3857 CRS used by default. |
|
*/ |
|
|
|
L.Projection.SphericalMercator = { |
|
MAX_LATITUDE: 85.0511287798, |
|
|
|
project: function (latlng) { // (LatLng) -> Point |
|
var d = L.LatLng.DEG_TO_RAD, |
|
max = this.MAX_LATITUDE, |
|
lat = Math.max(Math.min(max, latlng.lat), -max), |
|
x = latlng.lng * d, |
|
y = lat * d; |
|
|
|
y = Math.log(Math.tan((Math.PI / 4) + (y / 2))); |
|
|
|
return new L.Point(x, y); |
|
}, |
|
|
|
unproject: function (point) { // (Point, Boolean) -> LatLng |
|
var d = L.LatLng.RAD_TO_DEG, |
|
lng = point.x * d, |
|
lat = (2 * Math.atan(Math.exp(point.y)) - (Math.PI / 2)) * d; |
|
|
|
return new L.LatLng(lat, lng); |
|
} |
|
}; |
|
|
|
|
|
/* |
|
* Simple equirectangular (Plate Carree) projection, used by CRS like EPSG:4326 and Simple. |
|
*/ |
|
|
|
L.Projection.LonLat = { |
|
project: function (latlng) { |
|
return new L.Point(latlng.lng, latlng.lat); |
|
}, |
|
|
|
unproject: function (point) { |
|
return new L.LatLng(point.y, point.x); |
|
} |
|
}; |
|
|
|
|
|
/* |
|
* L.CRS is a base object for all defined CRS (Coordinate Reference Systems) in Leaflet. |
|
*/ |
|
|
|
L.CRS = { |
|
latLngToPoint: function (latlng, zoom) { // (LatLng, Number) -> Point |
|
var projectedPoint = this.projection.project(latlng), |
|
scale = this.scale(zoom); |
|
|
|
return this.transformation._transform(projectedPoint, scale); |
|
}, |
|
|
|
pointToLatLng: function (point, zoom) { // (Point, Number[, Boolean]) -> LatLng |
|
var scale = this.scale(zoom), |
|
untransformedPoint = this.transformation.untransform(point, scale); |
|
|
|
return this.projection.unproject(untransformedPoint); |
|
}, |
|
|
|
project: function (latlng) { |
|
return this.projection.project(latlng); |
|
}, |
|
|
|
scale: function (zoom) { |
|
return 256 * Math.pow(2, zoom); |
|
} |
|
}; |
|
|
|
|
|
/* |
|
* A simple CRS that can be used for flat non-Earth maps like panoramas or game maps. |
|
*/ |
|
|
|
L.CRS.Simple = L.extend({}, L.CRS, { |
|
projection: L.Projection.LonLat, |
|
transformation: new L.Transformation(1, 0, -1, 0), |
|
|
|
scale: function (zoom) { |
|
return Math.pow(2, zoom); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.CRS.EPSG3857 (Spherical Mercator) is the most common CRS for web mapping |
|
* and is used by Leaflet by default. |
|
*/ |
|
|
|
L.CRS.EPSG3857 = L.extend({}, L.CRS, { |
|
code: 'EPSG:3857', |
|
|
|
projection: L.Projection.SphericalMercator, |
|
transformation: new L.Transformation(0.5 / Math.PI, 0.5, -0.5 / Math.PI, 0.5), |
|
|
|
project: function (latlng) { // (LatLng) -> Point |
|
var projectedPoint = this.projection.project(latlng), |
|
earthRadius = 6378137; |
|
return projectedPoint.multiplyBy(earthRadius); |
|
} |
|
}); |
|
|
|
L.CRS.EPSG900913 = L.extend({}, L.CRS.EPSG3857, { |
|
code: 'EPSG:900913' |
|
}); |
|
|
|
|
|
/* |
|
* L.CRS.EPSG4326 is a CRS popular among advanced GIS specialists. |
|
*/ |
|
|
|
L.CRS.EPSG4326 = L.extend({}, L.CRS, { |
|
code: 'EPSG:4326', |
|
|
|
projection: L.Projection.LonLat, |
|
transformation: new L.Transformation(1 / 360, 0.5, -1 / 360, 0.5) |
|
}); |
|
|
|
|
|
/* |
|
* L.Map is the central class of the API - it is used to create a map. |
|
*/ |
|
|
|
L.Map = L.Class.extend({ |
|
|
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
crs: L.CRS.EPSG3857, |
|
|
|
/* |
|
center: LatLng, |
|
zoom: Number, |
|
layers: Array, |
|
*/ |
|
|
|
fadeAnimation: L.DomUtil.TRANSITION && !L.Browser.android23, |
|
trackResize: true, |
|
markerZoomAnimation: L.DomUtil.TRANSITION && L.Browser.any3d |
|
}, |
|
|
|
initialize: function (id, options) { // (HTMLElement or String, Object) |
|
options = L.setOptions(this, options); |
|
|
|
this._initContainer(id); |
|
this._initLayout(); |
|
this.callInitHooks(); |
|
this._initEvents(); |
|
|
|
if (options.maxBounds) { |
|
this.setMaxBounds(options.maxBounds); |
|
} |
|
|
|
if (options.center && options.zoom !== undefined) { |
|
this.setView(L.latLng(options.center), options.zoom, true); |
|
} |
|
|
|
this._initLayers(options.layers); |
|
}, |
|
|
|
|
|
// public methods that modify map state |
|
|
|
// replaced by animation-powered implementation in Map.PanAnimation.js |
|
setView: function (center, zoom) { |
|
this._resetView(L.latLng(center), this._limitZoom(zoom)); |
|
return this; |
|
}, |
|
|
|
setZoom: function (zoom) { // (Number) |
|
return this.setView(this.getCenter(), zoom); |
|
}, |
|
|
|
zoomIn: function (delta) { |
|
return this.setZoom(this._zoom + (delta || 1)); |
|
}, |
|
|
|
zoomOut: function (delta) { |
|
return this.setZoom(this._zoom - (delta || 1)); |
|
}, |
|
|
|
fitBounds: function (bounds) { // (LatLngBounds) |
|
var zoom = this.getBoundsZoom(bounds); |
|
return this.setView(L.latLngBounds(bounds).getCenter(), zoom); |
|
}, |
|
|
|
fitWorld: function () { |
|
var sw = new L.LatLng(-60, -170), |
|
ne = new L.LatLng(85, 179); |
|
|
|
return this.fitBounds(new L.LatLngBounds(sw, ne)); |
|
}, |
|
|
|
panTo: function (center) { // (LatLng) |
|
return this.setView(center, this._zoom); |
|
}, |
|
|
|
panBy: function (offset) { // (Point) |
|
// replaced with animated panBy in Map.Animation.js |
|
this.fire('movestart'); |
|
|
|
this._rawPanBy(L.point(offset)); |
|
|
|
this.fire('move'); |
|
return this.fire('moveend'); |
|
}, |
|
|
|
setMaxBounds: function (bounds) { |
|
bounds = L.latLngBounds(bounds); |
|
|
|
this.options.maxBounds = bounds; |
|
|
|
if (!bounds) { |
|
this._boundsMinZoom = null; |
|
return this; |
|
} |
|
|
|
var minZoom = this.getBoundsZoom(bounds, true); |
|
|
|
this._boundsMinZoom = minZoom; |
|
|
|
if (this._loaded) { |
|
if (this._zoom < minZoom) { |
|
this.setView(bounds.getCenter(), minZoom); |
|
} else { |
|
this.panInsideBounds(bounds); |
|
} |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
panInsideBounds: function (bounds) { |
|
bounds = L.latLngBounds(bounds); |
|
|
|
var viewBounds = this.getBounds(), |
|
viewSw = this.project(viewBounds.getSouthWest()), |
|
viewNe = this.project(viewBounds.getNorthEast()), |
|
sw = this.project(bounds.getSouthWest()), |
|
ne = this.project(bounds.getNorthEast()), |
|
dx = 0, |
|
dy = 0; |
|
|
|
if (viewNe.y < ne.y) { // north |
|
dy = ne.y - viewNe.y; |
|
} |
|
if (viewNe.x > ne.x) { // east |
|
dx = ne.x - viewNe.x; |
|
} |
|
if (viewSw.y > sw.y) { // south |
|
dy = sw.y - viewSw.y; |
|
} |
|
if (viewSw.x < sw.x) { // west |
|
dx = sw.x - viewSw.x; |
|
} |
|
|
|
return this.panBy(new L.Point(dx, dy, true)); |
|
}, |
|
|
|
addLayer: function (layer) { |
|
// TODO method is too big, refactor |
|
|
|
var id = L.stamp(layer); |
|
|
|
if (this._layers[id]) { return this; } |
|
|
|
this._layers[id] = layer; |
|
|
|
// TODO getMaxZoom, getMinZoom in ILayer (instead of options) |
|
if (layer.options && (!isNaN(layer.options.maxZoom) || !isNaN(layer.options.minZoom))) { |
|
this._zoomBoundLayers[id] = layer; |
|
this._updateZoomLevels(); |
|
} |
|
|
|
// TODO looks ugly, refactor!!! |
|
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) { |
|
this._tileLayersNum++; |
|
this._tileLayersToLoad++; |
|
layer.on('load', this._onTileLayerLoad, this); |
|
} |
|
|
|
this.whenReady(function () { |
|
layer.onAdd(this); |
|
this.fire('layeradd', {layer: layer}); |
|
}, this); |
|
|
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.stamp(layer); |
|
|
|
if (!this._layers[id]) { return; } |
|
|
|
layer.onRemove(this); |
|
|
|
delete this._layers[id]; |
|
if (this._zoomBoundLayers[id]) { |
|
delete this._zoomBoundLayers[id]; |
|
this._updateZoomLevels(); |
|
} |
|
|
|
// TODO looks ugly, refactor |
|
if (this.options.zoomAnimation && L.TileLayer && (layer instanceof L.TileLayer)) { |
|
this._tileLayersNum--; |
|
this._tileLayersToLoad--; |
|
layer.off('load', this._onTileLayerLoad, this); |
|
} |
|
|
|
return this.fire('layerremove', {layer: layer}); |
|
}, |
|
|
|
hasLayer: function (layer) { |
|
var id = L.stamp(layer); |
|
return this._layers.hasOwnProperty(id); |
|
}, |
|
|
|
invalidateSize: function (animate) { |
|
var oldSize = this.getSize(); |
|
|
|
this._sizeChanged = true; |
|
|
|
if (this.options.maxBounds) { |
|
this.setMaxBounds(this.options.maxBounds); |
|
} |
|
|
|
if (!this._loaded) { return this; } |
|
|
|
var offset = oldSize._subtract(this.getSize())._divideBy(2)._round(); |
|
|
|
if (animate === true) { |
|
this.panBy(offset); |
|
} else { |
|
this._rawPanBy(offset); |
|
|
|
this.fire('move'); |
|
|
|
clearTimeout(this._sizeTimer); |
|
this._sizeTimer = setTimeout(L.bind(this.fire, this, 'moveend'), 200); |
|
} |
|
return this; |
|
}, |
|
|
|
// TODO handler.addTo |
|
addHandler: function (name, HandlerClass) { |
|
if (!HandlerClass) { return; } |
|
|
|
this[name] = new HandlerClass(this); |
|
|
|
if (this.options[name]) { |
|
this[name].enable(); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
|
|
// public methods for getting map state |
|
|
|
getCenter: function () { // (Boolean) -> LatLng |
|
return this.layerPointToLatLng(this._getCenterLayerPoint()); |
|
}, |
|
|
|
getZoom: function () { |
|
return this._zoom; |
|
}, |
|
|
|
getBounds: function () { |
|
var bounds = this.getPixelBounds(), |
|
sw = this.unproject(bounds.getBottomLeft()), |
|
ne = this.unproject(bounds.getTopRight()); |
|
|
|
return new L.LatLngBounds(sw, ne); |
|
}, |
|
|
|
getMinZoom: function () { |
|
var z1 = this.options.minZoom || 0, |
|
z2 = this._layersMinZoom || 0, |
|
z3 = this._boundsMinZoom || 0; |
|
|
|
return Math.max(z1, z2, z3); |
|
}, |
|
|
|
getMaxZoom: function () { |
|
var z1 = this.options.maxZoom === undefined ? Infinity : this.options.maxZoom, |
|
z2 = this._layersMaxZoom === undefined ? Infinity : this._layersMaxZoom; |
|
|
|
return Math.min(z1, z2); |
|
}, |
|
|
|
getBoundsZoom: function (bounds, inside) { // (LatLngBounds, Boolean) -> Number |
|
bounds = L.latLngBounds(bounds); |
|
|
|
var size = this.getSize(), |
|
zoom = this.options.minZoom || 0, |
|
maxZoom = this.getMaxZoom(), |
|
ne = bounds.getNorthEast(), |
|
sw = bounds.getSouthWest(), |
|
boundsSize, |
|
nePoint, |
|
swPoint, |
|
zoomNotFound = true; |
|
|
|
if (inside) { |
|
zoom--; |
|
} |
|
|
|
do { |
|
zoom++; |
|
nePoint = this.project(ne, zoom); |
|
swPoint = this.project(sw, zoom); |
|
|
|
boundsSize = new L.Point( |
|
Math.abs(nePoint.x - swPoint.x), |
|
Math.abs(swPoint.y - nePoint.y)); |
|
|
|
if (!inside) { |
|
zoomNotFound = boundsSize.x <= size.x && boundsSize.y <= size.y; |
|
} else { |
|
zoomNotFound = boundsSize.x < size.x || boundsSize.y < size.y; |
|
} |
|
} while (zoomNotFound && zoom <= maxZoom); |
|
|
|
if (zoomNotFound && inside) { |
|
return null; |
|
} |
|
|
|
return inside ? zoom : zoom - 1; |
|
}, |
|
|
|
getSize: function () { |
|
if (!this._size || this._sizeChanged) { |
|
this._size = new L.Point( |
|
this._container.clientWidth, |
|
this._container.clientHeight); |
|
|
|
this._sizeChanged = false; |
|
} |
|
return this._size.clone(); |
|
}, |
|
|
|
getPixelBounds: function () { |
|
var topLeftPoint = this._getTopLeftPoint(); |
|
return new L.Bounds(topLeftPoint, topLeftPoint.add(this.getSize())); |
|
}, |
|
|
|
getPixelOrigin: function () { |
|
return this._initialTopLeftPoint; |
|
}, |
|
|
|
getPanes: function () { |
|
return this._panes; |
|
}, |
|
|
|
getContainer: function () { |
|
return this._container; |
|
}, |
|
|
|
|
|
// TODO replace with universal implementation after refactoring projections |
|
|
|
getZoomScale: function (toZoom) { |
|
var crs = this.options.crs; |
|
return crs.scale(toZoom) / crs.scale(this._zoom); |
|
}, |
|
|
|
getScaleZoom: function (scale) { |
|
return this._zoom + (Math.log(scale) / Math.LN2); |
|
}, |
|
|
|
|
|
// conversion methods |
|
|
|
project: function (latlng, zoom) { // (LatLng[, Number]) -> Point |
|
zoom = zoom === undefined ? this._zoom : zoom; |
|
return this.options.crs.latLngToPoint(L.latLng(latlng), zoom); |
|
}, |
|
|
|
unproject: function (point, zoom) { // (Point[, Number]) -> LatLng |
|
zoom = zoom === undefined ? this._zoom : zoom; |
|
return this.options.crs.pointToLatLng(L.point(point), zoom); |
|
}, |
|
|
|
layerPointToLatLng: function (point) { // (Point) |
|
var projectedPoint = L.point(point).add(this._initialTopLeftPoint); |
|
return this.unproject(projectedPoint); |
|
}, |
|
|
|
latLngToLayerPoint: function (latlng) { // (LatLng) |
|
var projectedPoint = this.project(L.latLng(latlng))._round(); |
|
return projectedPoint._subtract(this._initialTopLeftPoint); |
|
}, |
|
|
|
containerPointToLayerPoint: function (point) { // (Point) |
|
return L.point(point).subtract(this._getMapPanePos()); |
|
}, |
|
|
|
layerPointToContainerPoint: function (point) { // (Point) |
|
return L.point(point).add(this._getMapPanePos()); |
|
}, |
|
|
|
containerPointToLatLng: function (point) { |
|
var layerPoint = this.containerPointToLayerPoint(L.point(point)); |
|
return this.layerPointToLatLng(layerPoint); |
|
}, |
|
|
|
latLngToContainerPoint: function (latlng) { |
|
return this.layerPointToContainerPoint(this.latLngToLayerPoint(L.latLng(latlng))); |
|
}, |
|
|
|
mouseEventToContainerPoint: function (e) { // (MouseEvent) |
|
return L.DomEvent.getMousePosition(e, this._container); |
|
}, |
|
|
|
mouseEventToLayerPoint: function (e) { // (MouseEvent) |
|
return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(e)); |
|
}, |
|
|
|
mouseEventToLatLng: function (e) { // (MouseEvent) |
|
return this.layerPointToLatLng(this.mouseEventToLayerPoint(e)); |
|
}, |
|
|
|
|
|
// map initialization methods |
|
|
|
_initContainer: function (id) { |
|
var container = this._container = L.DomUtil.get(id); |
|
|
|
if (container._leaflet) { |
|
throw new Error("Map container is already initialized."); |
|
} |
|
|
|
container._leaflet = true; |
|
}, |
|
|
|
_initLayout: function () { |
|
var container = this._container; |
|
|
|
L.DomUtil.addClass(container, 'leaflet-container'); |
|
|
|
if (L.Browser.touch) { |
|
L.DomUtil.addClass(container, 'leaflet-touch'); |
|
} |
|
|
|
if (this.options.fadeAnimation) { |
|
L.DomUtil.addClass(container, 'leaflet-fade-anim'); |
|
} |
|
|
|
var position = L.DomUtil.getStyle(container, 'position'); |
|
|
|
if (position !== 'absolute' && position !== 'relative' && position !== 'fixed') { |
|
container.style.position = 'relative'; |
|
} |
|
|
|
this._initPanes(); |
|
|
|
if (this._initControlPos) { |
|
this._initControlPos(); |
|
} |
|
}, |
|
|
|
_initPanes: function () { |
|
var panes = this._panes = {}; |
|
|
|
this._mapPane = panes.mapPane = this._createPane('leaflet-map-pane', this._container); |
|
|
|
this._tilePane = panes.tilePane = this._createPane('leaflet-tile-pane', this._mapPane); |
|
panes.objectsPane = this._createPane('leaflet-objects-pane', this._mapPane); |
|
panes.shadowPane = this._createPane('leaflet-shadow-pane'); |
|
panes.overlayPane = this._createPane('leaflet-overlay-pane'); |
|
panes.markerPane = this._createPane('leaflet-marker-pane'); |
|
panes.popupPane = this._createPane('leaflet-popup-pane'); |
|
|
|
var zoomHide = ' leaflet-zoom-hide'; |
|
|
|
if (!this.options.markerZoomAnimation) { |
|
L.DomUtil.addClass(panes.markerPane, zoomHide); |
|
L.DomUtil.addClass(panes.shadowPane, zoomHide); |
|
L.DomUtil.addClass(panes.popupPane, zoomHide); |
|
} |
|
}, |
|
|
|
_createPane: function (className, container) { |
|
return L.DomUtil.create('div', className, container || this._panes.objectsPane); |
|
}, |
|
|
|
_initLayers: function (layers) { |
|
layers = layers ? (L.Util.isArray(layers) ? layers : [layers]) : []; |
|
|
|
this._layers = {}; |
|
this._zoomBoundLayers = {}; |
|
this._tileLayersNum = 0; |
|
|
|
var i, len; |
|
|
|
for (i = 0, len = layers.length; i < len; i++) { |
|
this.addLayer(layers[i]); |
|
} |
|
}, |
|
|
|
|
|
// private methods that modify map state |
|
|
|
_resetView: function (center, zoom, preserveMapOffset, afterZoomAnim) { |
|
|
|
var zoomChanged = (this._zoom !== zoom); |
|
|
|
if (!afterZoomAnim) { |
|
this.fire('movestart'); |
|
|
|
if (zoomChanged) { |
|
this.fire('zoomstart'); |
|
} |
|
} |
|
|
|
this._zoom = zoom; |
|
|
|
this._initialTopLeftPoint = this._getNewTopLeftPoint(center); |
|
|
|
if (!preserveMapOffset) { |
|
L.DomUtil.setPosition(this._mapPane, new L.Point(0, 0)); |
|
} else { |
|
this._initialTopLeftPoint._add(this._getMapPanePos()); |
|
} |
|
|
|
this._tileLayersToLoad = this._tileLayersNum; |
|
|
|
var loading = !this._loaded; |
|
this._loaded = true; |
|
|
|
this.fire('viewreset', {hard: !preserveMapOffset}); |
|
|
|
this.fire('move'); |
|
|
|
if (zoomChanged || afterZoomAnim) { |
|
this.fire('zoomend'); |
|
} |
|
|
|
this.fire('moveend', {hard: !preserveMapOffset}); |
|
|
|
if (loading) { |
|
this.fire('load'); |
|
} |
|
}, |
|
|
|
_rawPanBy: function (offset) { |
|
L.DomUtil.setPosition(this._mapPane, this._getMapPanePos().subtract(offset)); |
|
}, |
|
|
|
_updateZoomLevels: function () { |
|
var i, |
|
minZoom = Infinity, |
|
maxZoom = -Infinity; |
|
|
|
for (i in this._zoomBoundLayers) { |
|
if (this._zoomBoundLayers.hasOwnProperty(i)) { |
|
var layer = this._zoomBoundLayers[i]; |
|
if (!isNaN(layer.options.minZoom)) { |
|
minZoom = Math.min(minZoom, layer.options.minZoom); |
|
} |
|
if (!isNaN(layer.options.maxZoom)) { |
|
maxZoom = Math.max(maxZoom, layer.options.maxZoom); |
|
} |
|
} |
|
} |
|
|
|
if (i === undefined) { // we have no tilelayers |
|
this._layersMaxZoom = this._layersMinZoom = undefined; |
|
} else { |
|
this._layersMaxZoom = maxZoom; |
|
this._layersMinZoom = minZoom; |
|
} |
|
}, |
|
|
|
// map events |
|
|
|
_initEvents: function () { |
|
if (!L.DomEvent) { return; } |
|
|
|
L.DomEvent.on(this._container, 'click', this._onMouseClick, this); |
|
|
|
var events = ['dblclick', 'mousedown', 'mouseup', 'mouseenter', |
|
'mouseleave', 'mousemove', 'contextmenu'], |
|
i, len; |
|
|
|
for (i = 0, len = events.length; i < len; i++) { |
|
L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this); |
|
} |
|
|
|
if (this.options.trackResize) { |
|
L.DomEvent.on(window, 'resize', this._onResize, this); |
|
} |
|
}, |
|
|
|
_onResize: function () { |
|
L.Util.cancelAnimFrame(this._resizeRequest); |
|
this._resizeRequest = L.Util.requestAnimFrame( |
|
this.invalidateSize, this, false, this._container); |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
if (!this._loaded || (this.dragging && this.dragging.moved())) { return; } |
|
|
|
this.fire('preclick'); |
|
this._fireMouseEvent(e); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
if (!this._loaded) { return; } |
|
|
|
var type = e.type; |
|
|
|
type = (type === 'mouseenter' ? 'mouseover' : (type === 'mouseleave' ? 'mouseout' : type)); |
|
|
|
if (!this.hasEventListeners(type)) { return; } |
|
|
|
if (type === 'contextmenu') { |
|
L.DomEvent.preventDefault(e); |
|
} |
|
|
|
var containerPoint = this.mouseEventToContainerPoint(e), |
|
layerPoint = this.containerPointToLayerPoint(containerPoint), |
|
latlng = this.layerPointToLatLng(layerPoint); |
|
|
|
this.fire(type, { |
|
latlng: latlng, |
|
layerPoint: layerPoint, |
|
containerPoint: containerPoint, |
|
originalEvent: e |
|
}); |
|
}, |
|
|
|
_onTileLayerLoad: function () { |
|
// TODO super-ugly, refactor!!! |
|
// clear scaled tiles after all new tiles are loaded (for performance) |
|
this._tileLayersToLoad--; |
|
if (this._tileLayersNum && !this._tileLayersToLoad && this._tileBg) { |
|
clearTimeout(this._clearTileBgTimer); |
|
this._clearTileBgTimer = setTimeout(L.bind(this._clearTileBg, this), 500); |
|
} |
|
}, |
|
|
|
whenReady: function (callback, context) { |
|
if (this._loaded) { |
|
callback.call(context || this, this); |
|
} else { |
|
this.on('load', callback, context); |
|
} |
|
return this; |
|
}, |
|
|
|
|
|
// private methods for getting map state |
|
|
|
_getMapPanePos: function () { |
|
return L.DomUtil.getPosition(this._mapPane); |
|
}, |
|
|
|
_getTopLeftPoint: function () { |
|
if (!this._loaded) { |
|
throw new Error('Set map center and zoom first.'); |
|
} |
|
|
|
return this._initialTopLeftPoint.subtract(this._getMapPanePos()); |
|
}, |
|
|
|
_getNewTopLeftPoint: function (center, zoom) { |
|
var viewHalf = this.getSize()._divideBy(2); |
|
// TODO round on display, not calculation to increase precision? |
|
return this.project(center, zoom)._subtract(viewHalf)._round(); |
|
}, |
|
|
|
_latLngToNewLayerPoint: function (latlng, newZoom, newCenter) { |
|
var topLeft = this._getNewTopLeftPoint(newCenter, newZoom).add(this._getMapPanePos()); |
|
return this.project(latlng, newZoom)._subtract(topLeft); |
|
}, |
|
|
|
_getCenterLayerPoint: function () { |
|
return this.containerPointToLayerPoint(this.getSize()._divideBy(2)); |
|
}, |
|
|
|
_getCenterOffset: function (center) { |
|
return this.latLngToLayerPoint(center).subtract(this._getCenterLayerPoint()); |
|
}, |
|
|
|
_limitZoom: function (zoom) { |
|
var min = this.getMinZoom(), |
|
max = this.getMaxZoom(); |
|
|
|
return Math.max(min, Math.min(max, zoom)); |
|
} |
|
}); |
|
|
|
L.map = function (id, options) { |
|
return new L.Map(id, options); |
|
}; |
|
|
|
|
|
/* |
|
* Mercator projection that takes into account that the Earth is not a perfect sphere. |
|
* Less popular than spherical mercator; used by projections like EPSG:3395. |
|
*/ |
|
|
|
L.Projection.Mercator = { |
|
MAX_LATITUDE: 85.0840591556, |
|
|
|
R_MINOR: 6356752.3142, |
|
R_MAJOR: 6378137, |
|
|
|
project: function (latlng) { // (LatLng) -> Point |
|
var d = L.LatLng.DEG_TO_RAD, |
|
max = this.MAX_LATITUDE, |
|
lat = Math.max(Math.min(max, latlng.lat), -max), |
|
r = this.R_MAJOR, |
|
r2 = this.R_MINOR, |
|
x = latlng.lng * d * r, |
|
y = lat * d, |
|
tmp = r2 / r, |
|
eccent = Math.sqrt(1.0 - tmp * tmp), |
|
con = eccent * Math.sin(y); |
|
|
|
con = Math.pow((1 - con) / (1 + con), eccent * 0.5); |
|
|
|
var ts = Math.tan(0.5 * ((Math.PI * 0.5) - y)) / con; |
|
y = -r2 * Math.log(ts); |
|
|
|
return new L.Point(x, y); |
|
}, |
|
|
|
unproject: function (point) { // (Point, Boolean) -> LatLng |
|
var d = L.LatLng.RAD_TO_DEG, |
|
r = this.R_MAJOR, |
|
r2 = this.R_MINOR, |
|
lng = point.x * d / r, |
|
tmp = r2 / r, |
|
eccent = Math.sqrt(1 - (tmp * tmp)), |
|
ts = Math.exp(- point.y / r2), |
|
phi = (Math.PI / 2) - 2 * Math.atan(ts), |
|
numIter = 15, |
|
tol = 1e-7, |
|
i = numIter, |
|
dphi = 0.1, |
|
con; |
|
|
|
while ((Math.abs(dphi) > tol) && (--i > 0)) { |
|
con = eccent * Math.sin(phi); |
|
dphi = (Math.PI / 2) - 2 * Math.atan(ts * |
|
Math.pow((1.0 - con) / (1.0 + con), 0.5 * eccent)) - phi; |
|
phi += dphi; |
|
} |
|
|
|
return new L.LatLng(phi * d, lng); |
|
} |
|
}; |
|
|
|
|
|
|
|
L.CRS.EPSG3395 = L.extend({}, L.CRS, { |
|
code: 'EPSG:3395', |
|
|
|
projection: L.Projection.Mercator, |
|
|
|
transformation: (function () { |
|
var m = L.Projection.Mercator, |
|
r = m.R_MAJOR, |
|
r2 = m.R_MINOR; |
|
|
|
return new L.Transformation(0.5 / (Math.PI * r), 0.5, -0.5 / (Math.PI * r2), 0.5); |
|
}()) |
|
}); |
|
|
|
|
|
/* |
|
* L.TileLayer is used for standard xyz-numbered tile layers. |
|
*/ |
|
|
|
L.TileLayer = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
minZoom: 0, |
|
maxZoom: 18, |
|
tileSize: 256, |
|
subdomains: 'abc', |
|
errorTileUrl: '', |
|
attribution: '', |
|
zoomOffset: 0, |
|
opacity: 1, |
|
/* (undefined works too) |
|
zIndex: null, |
|
tms: false, |
|
continuousWorld: false, |
|
noWrap: false, |
|
zoomReverse: false, |
|
detectRetina: false, |
|
reuseTiles: false, |
|
*/ |
|
unloadInvisibleTiles: L.Browser.mobile, |
|
updateWhenIdle: L.Browser.mobile |
|
}, |
|
|
|
initialize: function (url, options) { |
|
options = L.setOptions(this, options); |
|
|
|
// detecting retina displays, adjusting tileSize and zoom levels |
|
if (options.detectRetina && L.Browser.retina && options.maxZoom > 0) { |
|
|
|
options.tileSize = Math.floor(options.tileSize / 2); |
|
options.zoomOffset++; |
|
|
|
if (options.minZoom > 0) { |
|
options.minZoom--; |
|
} |
|
this.options.maxZoom--; |
|
} |
|
|
|
this._url = url; |
|
|
|
var subdomains = this.options.subdomains; |
|
|
|
if (typeof subdomains === 'string') { |
|
this.options.subdomains = subdomains.split(''); |
|
} |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
// create a container div for tiles |
|
this._initContainer(); |
|
|
|
// create an image to clone for tiles |
|
this._createTileProto(); |
|
|
|
// set up events |
|
map.on({ |
|
'viewreset': this._resetCallback, |
|
'moveend': this._update |
|
}, this); |
|
|
|
if (!this.options.updateWhenIdle) { |
|
this._limitedUpdate = L.Util.limitExecByInterval(this._update, 150, this); |
|
map.on('move', this._limitedUpdate, this); |
|
} |
|
|
|
this._reset(); |
|
this._update(); |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._container.parentNode.removeChild(this._container); |
|
|
|
map.off({ |
|
'viewreset': this._resetCallback, |
|
'moveend': this._update |
|
}, this); |
|
|
|
if (!this.options.updateWhenIdle) { |
|
map.off('move', this._limitedUpdate, this); |
|
} |
|
|
|
this._container = null; |
|
this._map = null; |
|
}, |
|
|
|
bringToFront: function () { |
|
var pane = this._map._panes.tilePane; |
|
|
|
if (this._container) { |
|
pane.appendChild(this._container); |
|
this._setAutoZIndex(pane, Math.max); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
bringToBack: function () { |
|
var pane = this._map._panes.tilePane; |
|
|
|
if (this._container) { |
|
pane.insertBefore(this._container, pane.firstChild); |
|
this._setAutoZIndex(pane, Math.min); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
getAttribution: function () { |
|
return this.options.attribution; |
|
}, |
|
|
|
setOpacity: function (opacity) { |
|
this.options.opacity = opacity; |
|
|
|
if (this._map) { |
|
this._updateOpacity(); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
setZIndex: function (zIndex) { |
|
this.options.zIndex = zIndex; |
|
this._updateZIndex(); |
|
|
|
return this; |
|
}, |
|
|
|
setUrl: function (url, noRedraw) { |
|
this._url = url; |
|
|
|
if (!noRedraw) { |
|
this.redraw(); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
redraw: function () { |
|
if (this._map) { |
|
this._map._panes.tilePane.empty = false; |
|
this._reset(true); |
|
this._update(); |
|
} |
|
return this; |
|
}, |
|
|
|
_updateZIndex: function () { |
|
if (this._container && this.options.zIndex !== undefined) { |
|
this._container.style.zIndex = this.options.zIndex; |
|
} |
|
}, |
|
|
|
_setAutoZIndex: function (pane, compare) { |
|
|
|
var layers = pane.children, |
|
edgeZIndex = -compare(Infinity, -Infinity), // -Infinity for max, Infinity for min |
|
zIndex, i, len; |
|
|
|
for (i = 0, len = layers.length; i < len; i++) { |
|
|
|
if (layers[i] !== this._container) { |
|
zIndex = parseInt(layers[i].style.zIndex, 10); |
|
|
|
if (!isNaN(zIndex)) { |
|
edgeZIndex = compare(edgeZIndex, zIndex); |
|
} |
|
} |
|
} |
|
|
|
this.options.zIndex = this._container.style.zIndex = |
|
(isFinite(edgeZIndex) ? edgeZIndex : 0) + compare(1, -1); |
|
}, |
|
|
|
_updateOpacity: function () { |
|
L.DomUtil.setOpacity(this._container, this.options.opacity); |
|
|
|
// stupid webkit hack to force redrawing of tiles |
|
var i, |
|
tiles = this._tiles; |
|
|
|
if (L.Browser.webkit) { |
|
for (i in tiles) { |
|
if (tiles.hasOwnProperty(i)) { |
|
tiles[i].style.webkitTransform += ' translate(0,0)'; |
|
} |
|
} |
|
} |
|
}, |
|
|
|
_initContainer: function () { |
|
var tilePane = this._map._panes.tilePane; |
|
|
|
if (!this._container || tilePane.empty) { |
|
this._container = L.DomUtil.create('div', 'leaflet-layer'); |
|
|
|
this._updateZIndex(); |
|
|
|
tilePane.appendChild(this._container); |
|
|
|
if (this.options.opacity < 1) { |
|
this._updateOpacity(); |
|
} |
|
} |
|
}, |
|
|
|
_resetCallback: function (e) { |
|
this._reset(e.hard); |
|
}, |
|
|
|
_reset: function (clearOldContainer) { |
|
var tiles = this._tiles; |
|
|
|
for (var key in tiles) { |
|
if (tiles.hasOwnProperty(key)) { |
|
this.fire('tileunload', {tile: tiles[key]}); |
|
} |
|
} |
|
|
|
this._tiles = {}; |
|
this._tilesToLoad = 0; |
|
|
|
if (this.options.reuseTiles) { |
|
this._unusedTiles = []; |
|
} |
|
|
|
if (clearOldContainer && this._container) { |
|
this._container.innerHTML = ""; |
|
} |
|
|
|
this._initContainer(); |
|
}, |
|
|
|
_update: function () { |
|
|
|
if (!this._map) { return; } |
|
|
|
var bounds = this._map.getPixelBounds(), |
|
zoom = this._map.getZoom(), |
|
tileSize = this.options.tileSize; |
|
|
|
if (zoom > this.options.maxZoom || zoom < this.options.minZoom) { |
|
return; |
|
} |
|
|
|
var nwTilePoint = new L.Point( |
|
Math.floor(bounds.min.x / tileSize), |
|
Math.floor(bounds.min.y / tileSize)), |
|
|
|
seTilePoint = new L.Point( |
|
Math.floor(bounds.max.x / tileSize), |
|
Math.floor(bounds.max.y / tileSize)), |
|
|
|
tileBounds = new L.Bounds(nwTilePoint, seTilePoint); |
|
|
|
this._addTilesFromCenterOut(tileBounds); |
|
|
|
if (this.options.unloadInvisibleTiles || this.options.reuseTiles) { |
|
this._removeOtherTiles(tileBounds); |
|
} |
|
}, |
|
|
|
_addTilesFromCenterOut: function (bounds) { |
|
var queue = [], |
|
center = bounds.getCenter(); |
|
|
|
var j, i, point; |
|
|
|
for (j = bounds.min.y; j <= bounds.max.y; j++) { |
|
for (i = bounds.min.x; i <= bounds.max.x; i++) { |
|
point = new L.Point(i, j); |
|
|
|
if (this._tileShouldBeLoaded(point)) { |
|
queue.push(point); |
|
} |
|
} |
|
} |
|
|
|
var tilesToLoad = queue.length; |
|
|
|
if (tilesToLoad === 0) { return; } |
|
|
|
// load tiles in order of their distance to center |
|
queue.sort(function (a, b) { |
|
return a.distanceTo(center) - b.distanceTo(center); |
|
}); |
|
|
|
var fragment = document.createDocumentFragment(); |
|
|
|
// if its the first batch of tiles to load |
|
if (!this._tilesToLoad) { |
|
this.fire('loading'); |
|
} |
|
|
|
this._tilesToLoad += tilesToLoad; |
|
|
|
for (i = 0; i < tilesToLoad; i++) { |
|
this._addTile(queue[i], fragment); |
|
} |
|
|
|
this._container.appendChild(fragment); |
|
}, |
|
|
|
_tileShouldBeLoaded: function (tilePoint) { |
|
if ((tilePoint.x + ':' + tilePoint.y) in this._tiles) { |
|
return false; // already loaded |
|
} |
|
|
|
if (!this.options.continuousWorld) { |
|
var limit = this._getWrapTileNum(); |
|
|
|
if (this.options.noWrap && (tilePoint.x < 0 || tilePoint.x >= limit) || |
|
tilePoint.y < 0 || tilePoint.y >= limit) { |
|
return false; // exceeds world bounds |
|
} |
|
} |
|
|
|
return true; |
|
}, |
|
|
|
_removeOtherTiles: function (bounds) { |
|
var kArr, x, y, key; |
|
|
|
for (key in this._tiles) { |
|
if (this._tiles.hasOwnProperty(key)) { |
|
kArr = key.split(':'); |
|
x = parseInt(kArr[0], 10); |
|
y = parseInt(kArr[1], 10); |
|
|
|
// remove tile if it's out of bounds |
|
if (x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) { |
|
this._removeTile(key); |
|
} |
|
} |
|
} |
|
}, |
|
|
|
_removeTile: function (key) { |
|
var tile = this._tiles[key]; |
|
|
|
this.fire("tileunload", {tile: tile, url: tile.src}); |
|
|
|
if (this.options.reuseTiles) { |
|
L.DomUtil.removeClass(tile, 'leaflet-tile-loaded'); |
|
this._unusedTiles.push(tile); |
|
|
|
} else if (tile.parentNode === this._container) { |
|
this._container.removeChild(tile); |
|
} |
|
|
|
// for https://github.com/CloudMade/Leaflet/issues/137 |
|
if (!L.Browser.android) { |
|
tile.src = L.Util.emptyImageUrl; |
|
} |
|
|
|
delete this._tiles[key]; |
|
}, |
|
|
|
_addTile: function (tilePoint, container) { |
|
var tilePos = this._getTilePos(tilePoint); |
|
|
|
// get unused tile - or create a new tile |
|
var tile = this._getTile(); |
|
|
|
/* |
|
Chrome 20 layouts much faster with top/left (verify with timeline, frames) |
|
Android 4 browser has display issues with top/left and requires transform instead |
|
Android 3 browser not tested |
|
Android 2 browser requires top/left or tiles disappear on load or first drag |
|
(reappear after zoom) https://github.com/CloudMade/Leaflet/issues/866 |
|
(other browsers don't currently care) - see debug/hacks/jitter.html for an example |
|
*/ |
|
L.DomUtil.setPosition(tile, tilePos, L.Browser.chrome || L.Browser.android23); |
|
|
|
this._tiles[tilePoint.x + ':' + tilePoint.y] = tile; |
|
|
|
this._loadTile(tile, tilePoint); |
|
|
|
if (tile.parentNode !== this._container) { |
|
container.appendChild(tile); |
|
} |
|
}, |
|
|
|
_getZoomForUrl: function () { |
|
|
|
var options = this.options, |
|
zoom = this._map.getZoom(); |
|
|
|
if (options.zoomReverse) { |
|
zoom = options.maxZoom - zoom; |
|
} |
|
|
|
return zoom + options.zoomOffset; |
|
}, |
|
|
|
_getTilePos: function (tilePoint) { |
|
var origin = this._map.getPixelOrigin(), |
|
tileSize = this.options.tileSize; |
|
|
|
return tilePoint.multiplyBy(tileSize).subtract(origin); |
|
}, |
|
|
|
// image-specific code (override to implement e.g. Canvas or SVG tile layer) |
|
|
|
getTileUrl: function (tilePoint) { |
|
this._adjustTilePoint(tilePoint); |
|
|
|
return L.Util.template(this._url, L.extend({ |
|
s: this._getSubdomain(tilePoint), |
|
z: this._getZoomForUrl(), |
|
x: tilePoint.x, |
|
y: tilePoint.y |
|
}, this.options)); |
|
}, |
|
|
|
_getWrapTileNum: function () { |
|
// TODO refactor, limit is not valid for non-standard projections |
|
return Math.pow(2, this._getZoomForUrl()); |
|
}, |
|
|
|
_adjustTilePoint: function (tilePoint) { |
|
|
|
var limit = this._getWrapTileNum(); |
|
|
|
// wrap tile coordinates |
|
if (!this.options.continuousWorld && !this.options.noWrap) { |
|
tilePoint.x = ((tilePoint.x % limit) + limit) % limit; |
|
} |
|
|
|
if (this.options.tms) { |
|
tilePoint.y = limit - tilePoint.y - 1; |
|
} |
|
}, |
|
|
|
_getSubdomain: function (tilePoint) { |
|
var index = (tilePoint.x + tilePoint.y) % this.options.subdomains.length; |
|
return this.options.subdomains[index]; |
|
}, |
|
|
|
_createTileProto: function () { |
|
var img = this._tileImg = L.DomUtil.create('img', 'leaflet-tile'); |
|
img.style.width = img.style.height = this.options.tileSize + 'px'; |
|
img.galleryimg = 'no'; |
|
}, |
|
|
|
_getTile: function () { |
|
if (this.options.reuseTiles && this._unusedTiles.length > 0) { |
|
var tile = this._unusedTiles.pop(); |
|
this._resetTile(tile); |
|
return tile; |
|
} |
|
return this._createTile(); |
|
}, |
|
|
|
// Override if data stored on a tile needs to be cleaned up before reuse |
|
_resetTile: function (/*tile*/) {}, |
|
|
|
_createTile: function () { |
|
var tile = this._tileImg.cloneNode(false); |
|
tile.onselectstart = tile.onmousemove = L.Util.falseFn; |
|
return tile; |
|
}, |
|
|
|
_loadTile: function (tile, tilePoint) { |
|
tile._layer = this; |
|
tile.onload = this._tileOnLoad; |
|
tile.onerror = this._tileOnError; |
|
|
|
tile.src = this.getTileUrl(tilePoint); |
|
}, |
|
|
|
_tileLoaded: function () { |
|
this._tilesToLoad--; |
|
if (!this._tilesToLoad) { |
|
this.fire('load'); |
|
} |
|
}, |
|
|
|
_tileOnLoad: function () { |
|
var layer = this._layer; |
|
|
|
//Only if we are loading an actual image |
|
if (this.src !== L.Util.emptyImageUrl) { |
|
L.DomUtil.addClass(this, 'leaflet-tile-loaded'); |
|
|
|
layer.fire('tileload', { |
|
tile: this, |
|
url: this.src |
|
}); |
|
} |
|
|
|
layer._tileLoaded(); |
|
}, |
|
|
|
_tileOnError: function () { |
|
var layer = this._layer; |
|
|
|
layer.fire('tileerror', { |
|
tile: this, |
|
url: this.src |
|
}); |
|
|
|
var newUrl = layer.options.errorTileUrl; |
|
if (newUrl) { |
|
this.src = newUrl; |
|
} |
|
|
|
layer._tileLoaded(); |
|
} |
|
}); |
|
|
|
L.tileLayer = function (url, options) { |
|
return new L.TileLayer(url, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.TileLayer.WMS is used for putting WMS tile layers on the map. |
|
*/ |
|
|
|
L.TileLayer.WMS = L.TileLayer.extend({ |
|
|
|
defaultWmsParams: { |
|
service: 'WMS', |
|
request: 'GetMap', |
|
version: '1.1.1', |
|
layers: '', |
|
styles: '', |
|
format: 'image/jpeg', |
|
transparent: false |
|
}, |
|
|
|
initialize: function (url, options) { // (String, Object) |
|
|
|
this._url = url; |
|
|
|
var wmsParams = L.extend({}, this.defaultWmsParams); |
|
|
|
if (options.detectRetina && L.Browser.retina) { |
|
wmsParams.width = wmsParams.height = this.options.tileSize * 2; |
|
} else { |
|
wmsParams.width = wmsParams.height = this.options.tileSize; |
|
} |
|
|
|
for (var i in options) { |
|
// all keys that are not TileLayer options go to WMS params |
|
if (!this.options.hasOwnProperty(i)) { |
|
wmsParams[i] = options[i]; |
|
} |
|
} |
|
|
|
this.wmsParams = wmsParams; |
|
|
|
L.setOptions(this, options); |
|
}, |
|
|
|
onAdd: function (map) { |
|
|
|
var projectionKey = parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs'; |
|
this.wmsParams[projectionKey] = map.options.crs.code; |
|
|
|
L.TileLayer.prototype.onAdd.call(this, map); |
|
}, |
|
|
|
getTileUrl: function (tilePoint, zoom) { // (Point, Number) -> String |
|
|
|
this._adjustTilePoint(tilePoint); |
|
|
|
var map = this._map, |
|
crs = map.options.crs, |
|
tileSize = this.options.tileSize, |
|
|
|
nwPoint = tilePoint.multiplyBy(tileSize), |
|
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)), |
|
|
|
nw = crs.project(map.unproject(nwPoint, zoom)), |
|
se = crs.project(map.unproject(sePoint, zoom)), |
|
|
|
bbox = [nw.x, se.y, se.x, nw.y].join(','), |
|
|
|
url = L.Util.template(this._url, {s: this._getSubdomain(tilePoint)}); |
|
|
|
return url + L.Util.getParamString(this.wmsParams, url) + "&bbox=" + bbox; |
|
}, |
|
|
|
setParams: function (params, noRedraw) { |
|
|
|
L.extend(this.wmsParams, params); |
|
|
|
if (!noRedraw) { |
|
this.redraw(); |
|
} |
|
|
|
return this; |
|
} |
|
}); |
|
|
|
L.tileLayer.wms = function (url, options) { |
|
return new L.TileLayer.WMS(url, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.TileLayer.Canvas is a class that you can use as a base for creating |
|
* dynamically drawn Canvas-based tile layers. |
|
*/ |
|
|
|
L.TileLayer.Canvas = L.TileLayer.extend({ |
|
options: { |
|
async: false |
|
}, |
|
|
|
initialize: function (options) { |
|
L.setOptions(this, options); |
|
}, |
|
|
|
redraw: function () { |
|
var tiles = this._tiles; |
|
|
|
for (var i in tiles) { |
|
if (tiles.hasOwnProperty(i)) { |
|
this._redrawTile(tiles[i]); |
|
} |
|
} |
|
}, |
|
|
|
_redrawTile: function (tile) { |
|
this.drawTile(tile, tile._tilePoint, this._map._zoom); |
|
}, |
|
|
|
_createTileProto: function () { |
|
var proto = this._canvasProto = L.DomUtil.create('canvas', 'leaflet-tile'); |
|
proto.width = proto.height = this.options.tileSize; |
|
}, |
|
|
|
_createTile: function () { |
|
var tile = this._canvasProto.cloneNode(false); |
|
tile.onselectstart = tile.onmousemove = L.Util.falseFn; |
|
return tile; |
|
}, |
|
|
|
_loadTile: function (tile, tilePoint) { |
|
tile._layer = this; |
|
tile._tilePoint = tilePoint; |
|
|
|
this._redrawTile(tile); |
|
|
|
if (!this.options.async) { |
|
this.tileDrawn(tile); |
|
} |
|
}, |
|
|
|
drawTile: function (/*tile, tilePoint*/) { |
|
// override with rendering code |
|
}, |
|
|
|
tileDrawn: function (tile) { |
|
this._tileOnLoad.call(tile); |
|
} |
|
}); |
|
|
|
|
|
L.tileLayer.canvas = function (options) { |
|
return new L.TileLayer.Canvas(options); |
|
}; |
|
|
|
|
|
/* |
|
* L.ImageOverlay is used to overlay images over the map (to specific geographical bounds). |
|
*/ |
|
|
|
L.ImageOverlay = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
opacity: 1 |
|
}, |
|
|
|
initialize: function (url, bounds, options) { // (String, LatLngBounds, Object) |
|
this._url = url; |
|
this._bounds = L.latLngBounds(bounds); |
|
|
|
L.setOptions(this, options); |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
if (!this._image) { |
|
this._initImage(); |
|
} |
|
|
|
map._panes.overlayPane.appendChild(this._image); |
|
|
|
map.on('viewreset', this._reset, this); |
|
|
|
if (map.options.zoomAnimation && L.Browser.any3d) { |
|
map.on('zoomanim', this._animateZoom, this); |
|
} |
|
|
|
this._reset(); |
|
}, |
|
|
|
onRemove: function (map) { |
|
map.getPanes().overlayPane.removeChild(this._image); |
|
|
|
map.off('viewreset', this._reset, this); |
|
|
|
if (map.options.zoomAnimation) { |
|
map.off('zoomanim', this._animateZoom, this); |
|
} |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
setOpacity: function (opacity) { |
|
this.options.opacity = opacity; |
|
this._updateOpacity(); |
|
return this; |
|
}, |
|
|
|
// TODO remove bringToFront/bringToBack duplication from TileLayer/Path |
|
bringToFront: function () { |
|
if (this._image) { |
|
this._map._panes.overlayPane.appendChild(this._image); |
|
} |
|
return this; |
|
}, |
|
|
|
bringToBack: function () { |
|
var pane = this._map._panes.overlayPane; |
|
if (this._image) { |
|
pane.insertBefore(this._image, pane.firstChild); |
|
} |
|
return this; |
|
}, |
|
|
|
_initImage: function () { |
|
this._image = L.DomUtil.create('img', 'leaflet-image-layer'); |
|
|
|
if (this._map.options.zoomAnimation && L.Browser.any3d) { |
|
L.DomUtil.addClass(this._image, 'leaflet-zoom-animated'); |
|
} else { |
|
L.DomUtil.addClass(this._image, 'leaflet-zoom-hide'); |
|
} |
|
|
|
this._updateOpacity(); |
|
|
|
//TODO createImage util method to remove duplication |
|
L.extend(this._image, { |
|
galleryimg: 'no', |
|
onselectstart: L.Util.falseFn, |
|
onmousemove: L.Util.falseFn, |
|
onload: L.bind(this._onImageLoad, this), |
|
src: this._url |
|
}); |
|
}, |
|
|
|
_animateZoom: function (e) { |
|
var map = this._map, |
|
image = this._image, |
|
scale = map.getZoomScale(e.zoom), |
|
nw = this._bounds.getNorthWest(), |
|
se = this._bounds.getSouthEast(), |
|
|
|
topLeft = map._latLngToNewLayerPoint(nw, e.zoom, e.center), |
|
size = map._latLngToNewLayerPoint(se, e.zoom, e.center)._subtract(topLeft), |
|
origin = topLeft._add(size._multiplyBy((1 / 2) * (1 - 1 / scale))); |
|
|
|
image.style[L.DomUtil.TRANSFORM] = |
|
L.DomUtil.getTranslateString(origin) + ' scale(' + scale + ') '; |
|
}, |
|
|
|
_reset: function () { |
|
var image = this._image, |
|
topLeft = this._map.latLngToLayerPoint(this._bounds.getNorthWest()), |
|
size = this._map.latLngToLayerPoint(this._bounds.getSouthEast())._subtract(topLeft); |
|
|
|
L.DomUtil.setPosition(image, topLeft); |
|
|
|
image.style.width = size.x + 'px'; |
|
image.style.height = size.y + 'px'; |
|
}, |
|
|
|
_onImageLoad: function () { |
|
this.fire('load'); |
|
}, |
|
|
|
_updateOpacity: function () { |
|
L.DomUtil.setOpacity(this._image, this.options.opacity); |
|
} |
|
}); |
|
|
|
L.imageOverlay = function (url, bounds, options) { |
|
return new L.ImageOverlay(url, bounds, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Icon is an image-based icon class that you can use with L.Marker for custom markers. |
|
*/ |
|
|
|
L.Icon = L.Class.extend({ |
|
options: { |
|
/* |
|
iconUrl: (String) (required) |
|
iconRetinaUrl: (String) (optional, used for retina devices if detected) |
|
iconSize: (Point) (can be set through CSS) |
|
iconAnchor: (Point) (centered by default, can be set in CSS with negative margins) |
|
popupAnchor: (Point) (if not specified, popup opens in the anchor point) |
|
shadowUrl: (Point) (no shadow by default) |
|
shadowRetinaUrl: (String) (optional, used for retina devices if detected) |
|
shadowSize: (Point) |
|
shadowAnchor: (Point) |
|
*/ |
|
className: '' |
|
}, |
|
|
|
initialize: function (options) { |
|
L.setOptions(this, options); |
|
}, |
|
|
|
createIcon: function () { |
|
return this._createIcon('icon'); |
|
}, |
|
|
|
createShadow: function () { |
|
return this._createIcon('shadow'); |
|
}, |
|
|
|
_createIcon: function (name) { |
|
var src = this._getIconUrl(name); |
|
|
|
if (!src) { |
|
if (name === 'icon') { |
|
throw new Error("iconUrl not set in Icon options (see the docs)."); |
|
} |
|
return null; |
|
} |
|
|
|
var img = this._createImg(src); |
|
this._setIconStyles(img, name); |
|
|
|
return img; |
|
}, |
|
|
|
_setIconStyles: function (img, name) { |
|
var options = this.options, |
|
size = L.point(options[name + 'Size']), |
|
anchor; |
|
|
|
if (name === 'shadow') { |
|
anchor = L.point(options.shadowAnchor || options.iconAnchor); |
|
} else { |
|
anchor = L.point(options.iconAnchor); |
|
} |
|
|
|
if (!anchor && size) { |
|
anchor = size.divideBy(2, true); |
|
} |
|
|
|
img.className = 'leaflet-marker-' + name + ' ' + options.className; |
|
|
|
if (anchor) { |
|
img.style.marginLeft = (-anchor.x) + 'px'; |
|
img.style.marginTop = (-anchor.y) + 'px'; |
|
} |
|
|
|
if (size) { |
|
img.style.width = size.x + 'px'; |
|
img.style.height = size.y + 'px'; |
|
} |
|
}, |
|
|
|
_createImg: function (src) { |
|
var el; |
|
|
|
if (!L.Browser.ie6) { |
|
el = document.createElement('img'); |
|
el.src = src; |
|
} else { |
|
el = document.createElement('div'); |
|
el.style.filter = |
|
'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="' + src + '")'; |
|
} |
|
return el; |
|
}, |
|
|
|
_getIconUrl: function (name) { |
|
if (L.Browser.retina && this.options[name + 'RetinaUrl']) { |
|
return this.options[name + 'RetinaUrl']; |
|
} |
|
return this.options[name + 'Url']; |
|
} |
|
}); |
|
|
|
L.icon = function (options) { |
|
return new L.Icon(options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Icon.Default is the blue marker icon used by default in Leaflet. |
|
*/ |
|
|
|
L.Icon.Default = L.Icon.extend({ |
|
|
|
options: { |
|
iconSize: new L.Point(25, 41), |
|
iconAnchor: new L.Point(12, 41), |
|
popupAnchor: new L.Point(1, -34), |
|
|
|
shadowSize: new L.Point(41, 41) |
|
}, |
|
|
|
_getIconUrl: function (name) { |
|
var key = name + 'Url'; |
|
|
|
if (this.options[key]) { |
|
return this.options[key]; |
|
} |
|
|
|
if (L.Browser.retina && name === 'icon') { |
|
name += '@2x'; |
|
} |
|
|
|
var path = L.Icon.Default.imagePath; |
|
|
|
if (!path) { |
|
throw new Error("Couldn't autodetect L.Icon.Default.imagePath, set it manually."); |
|
} |
|
|
|
return path + '/marker-' + name + '.png'; |
|
} |
|
}); |
|
|
|
L.Icon.Default.imagePath = (function () { |
|
var scripts = document.getElementsByTagName('script'), |
|
leafletRe = /\/?leaflet[\-\._]?([\w\-\._]*)\.js\??/; |
|
|
|
var i, len, src, matches; |
|
|
|
for (i = 0, len = scripts.length; i < len; i++) { |
|
src = scripts[i].src; |
|
matches = src.match(leafletRe); |
|
|
|
if (matches) { |
|
return src.split(leafletRe)[0] + '/images'; |
|
} |
|
} |
|
}()); |
|
|
|
|
|
/* |
|
* L.Marker is used to display clickable/draggable icons on the map. |
|
*/ |
|
|
|
L.Marker = L.Class.extend({ |
|
|
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
icon: new L.Icon.Default(), |
|
title: '', |
|
clickable: true, |
|
draggable: false, |
|
zIndexOffset: 0, |
|
opacity: 1, |
|
riseOnHover: false, |
|
riseOffset: 250 |
|
}, |
|
|
|
initialize: function (latlng, options) { |
|
L.setOptions(this, options); |
|
this._latlng = L.latLng(latlng); |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
map.on('viewreset', this.update, this); |
|
|
|
this._initIcon(); |
|
this.update(); |
|
|
|
if (map.options.zoomAnimation && map.options.markerZoomAnimation) { |
|
map.on('zoomanim', this._animateZoom, this); |
|
} |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
onRemove: function (map) { |
|
this._removeIcon(); |
|
|
|
this.fire('remove'); |
|
|
|
map.off({ |
|
'viewreset': this.update, |
|
'zoomanim': this._animateZoom |
|
}, this); |
|
|
|
this._map = null; |
|
}, |
|
|
|
getLatLng: function () { |
|
return this._latlng; |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = L.latLng(latlng); |
|
|
|
this.update(); |
|
|
|
return this.fire('move', { latlng: this._latlng }); |
|
}, |
|
|
|
setZIndexOffset: function (offset) { |
|
this.options.zIndexOffset = offset; |
|
this.update(); |
|
|
|
return this; |
|
}, |
|
|
|
setIcon: function (icon) { |
|
if (this._map) { |
|
this._removeIcon(); |
|
} |
|
|
|
this.options.icon = icon; |
|
|
|
if (this._map) { |
|
this._initIcon(); |
|
this.update(); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
update: function () { |
|
if (this._icon) { |
|
var pos = this._map.latLngToLayerPoint(this._latlng).round(); |
|
this._setPos(pos); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
_initIcon: function () { |
|
var options = this.options, |
|
map = this._map, |
|
animation = (map.options.zoomAnimation && map.options.markerZoomAnimation), |
|
classToAdd = animation ? 'leaflet-zoom-animated' : 'leaflet-zoom-hide', |
|
needOpacityUpdate = false; |
|
|
|
if (!this._icon) { |
|
this._icon = options.icon.createIcon(); |
|
|
|
if (options.title) { |
|
this._icon.title = options.title; |
|
} |
|
|
|
this._initInteraction(); |
|
needOpacityUpdate = (this.options.opacity < 1); |
|
|
|
L.DomUtil.addClass(this._icon, classToAdd); |
|
|
|
if (options.riseOnHover) { |
|
L.DomEvent |
|
.on(this._icon, 'mouseover', this._bringToFront, this) |
|
.on(this._icon, 'mouseout', this._resetZIndex, this); |
|
} |
|
} |
|
|
|
if (!this._shadow) { |
|
this._shadow = options.icon.createShadow(); |
|
|
|
if (this._shadow) { |
|
L.DomUtil.addClass(this._shadow, classToAdd); |
|
needOpacityUpdate = (this.options.opacity < 1); |
|
} |
|
} |
|
|
|
if (needOpacityUpdate) { |
|
this._updateOpacity(); |
|
} |
|
|
|
var panes = this._map._panes; |
|
|
|
panes.markerPane.appendChild(this._icon); |
|
|
|
if (this._shadow) { |
|
panes.shadowPane.appendChild(this._shadow); |
|
} |
|
}, |
|
|
|
_removeIcon: function () { |
|
var panes = this._map._panes; |
|
|
|
if (this.options.riseOnHover) { |
|
L.DomEvent |
|
.off(this._icon, 'mouseover', this._bringToFront) |
|
.off(this._icon, 'mouseout', this._resetZIndex); |
|
} |
|
|
|
panes.markerPane.removeChild(this._icon); |
|
|
|
if (this._shadow) { |
|
panes.shadowPane.removeChild(this._shadow); |
|
} |
|
|
|
this._icon = this._shadow = null; |
|
}, |
|
|
|
_setPos: function (pos) { |
|
L.DomUtil.setPosition(this._icon, pos); |
|
|
|
if (this._shadow) { |
|
L.DomUtil.setPosition(this._shadow, pos); |
|
} |
|
|
|
this._zIndex = pos.y + this.options.zIndexOffset; |
|
|
|
this._resetZIndex(); |
|
}, |
|
|
|
_updateZIndex: function (offset) { |
|
this._icon.style.zIndex = this._zIndex + offset; |
|
}, |
|
|
|
_animateZoom: function (opt) { |
|
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center); |
|
|
|
this._setPos(pos); |
|
}, |
|
|
|
_initInteraction: function () { |
|
|
|
if (!this.options.clickable) { return; } |
|
|
|
// TODO refactor into something shared with Map/Path/etc. to DRY it up |
|
|
|
var icon = this._icon, |
|
events = ['dblclick', 'mousedown', 'mouseover', 'mouseout', 'contextmenu']; |
|
|
|
L.DomUtil.addClass(icon, 'leaflet-clickable'); |
|
L.DomEvent.on(icon, 'click', this._onMouseClick, this); |
|
|
|
for (var i = 0; i < events.length; i++) { |
|
L.DomEvent.on(icon, events[i], this._fireMouseEvent, this); |
|
} |
|
|
|
if (L.Handler.MarkerDrag) { |
|
this.dragging = new L.Handler.MarkerDrag(this); |
|
|
|
if (this.options.draggable) { |
|
this.dragging.enable(); |
|
} |
|
} |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
var wasDragged = this.dragging && this.dragging.moved(); |
|
|
|
if (this.hasEventListeners(e.type) || wasDragged) { |
|
L.DomEvent.stopPropagation(e); |
|
} |
|
|
|
if (wasDragged) { return; } |
|
|
|
if ((!this.dragging || !this.dragging._enabled) && this._map.dragging && this._map.dragging.moved()) { return; } |
|
|
|
this.fire(e.type, { |
|
originalEvent: e |
|
}); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
|
|
this.fire(e.type, { |
|
originalEvent: e |
|
}); |
|
|
|
// TODO proper custom event propagation |
|
// this line will always be called if marker is in a FeatureGroup |
|
if (e.type === 'contextmenu' && this.hasEventListeners(e.type)) { |
|
L.DomEvent.preventDefault(e); |
|
} |
|
if (e.type !== 'mousedown') { |
|
L.DomEvent.stopPropagation(e); |
|
} |
|
}, |
|
|
|
setOpacity: function (opacity) { |
|
this.options.opacity = opacity; |
|
if (this._map) { |
|
this._updateOpacity(); |
|
} |
|
}, |
|
|
|
_updateOpacity: function () { |
|
L.DomUtil.setOpacity(this._icon, this.options.opacity); |
|
if (this._shadow) { |
|
L.DomUtil.setOpacity(this._shadow, this.options.opacity); |
|
} |
|
}, |
|
|
|
_bringToFront: function () { |
|
this._updateZIndex(this.options.riseOffset); |
|
}, |
|
|
|
_resetZIndex: function () { |
|
this._updateZIndex(0); |
|
} |
|
}); |
|
|
|
L.marker = function (latlng, options) { |
|
return new L.Marker(latlng, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.DivIcon is a lightweight HTML-based icon class (as opposed to the image-based L.Icon) |
|
* to use with L.Marker. |
|
*/ |
|
|
|
L.DivIcon = L.Icon.extend({ |
|
options: { |
|
iconSize: new L.Point(12, 12), // also can be set through CSS |
|
/* |
|
iconAnchor: (Point) |
|
popupAnchor: (Point) |
|
html: (String) |
|
bgPos: (Point) |
|
*/ |
|
className: 'leaflet-div-icon' |
|
}, |
|
|
|
createIcon: function () { |
|
var div = document.createElement('div'), |
|
options = this.options; |
|
|
|
if (options.html) { |
|
div.innerHTML = options.html; |
|
} |
|
|
|
if (options.bgPos) { |
|
div.style.backgroundPosition = |
|
(-options.bgPos.x) + 'px ' + (-options.bgPos.y) + 'px'; |
|
} |
|
|
|
this._setIconStyles(div, 'icon'); |
|
return div; |
|
}, |
|
|
|
createShadow: function () { |
|
return null; |
|
} |
|
}); |
|
|
|
L.divIcon = function (options) { |
|
return new L.DivIcon(options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Popup is used for displaying popups on the map. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
closePopupOnClick: true |
|
}); |
|
|
|
L.Popup = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
options: { |
|
minWidth: 50, |
|
maxWidth: 300, |
|
maxHeight: null, |
|
autoPan: true, |
|
closeButton: true, |
|
offset: new L.Point(0, 6), |
|
autoPanPadding: new L.Point(5, 5), |
|
className: '', |
|
zoomAnimation: true |
|
}, |
|
|
|
initialize: function (options, source) { |
|
L.setOptions(this, options); |
|
|
|
this._source = source; |
|
this._animated = L.Browser.any3d && this.options.zoomAnimation; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
if (!this._container) { |
|
this._initLayout(); |
|
} |
|
this._updateContent(); |
|
|
|
var animFade = map.options.fadeAnimation; |
|
|
|
if (animFade) { |
|
L.DomUtil.setOpacity(this._container, 0); |
|
} |
|
map._panes.popupPane.appendChild(this._container); |
|
|
|
map.on('viewreset', this._updatePosition, this); |
|
|
|
if (this._animated) { |
|
map.on('zoomanim', this._zoomAnimation, this); |
|
} |
|
|
|
if (map.options.closePopupOnClick) { |
|
map.on('preclick', this._close, this); |
|
} |
|
|
|
this._update(); |
|
|
|
if (animFade) { |
|
L.DomUtil.setOpacity(this._container, 1); |
|
} |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
openOn: function (map) { |
|
map.openPopup(this); |
|
return this; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map._panes.popupPane.removeChild(this._container); |
|
|
|
L.Util.falseFn(this._container.offsetWidth); // force reflow |
|
|
|
map.off({ |
|
viewreset: this._updatePosition, |
|
preclick: this._close, |
|
zoomanim: this._zoomAnimation |
|
}, this); |
|
|
|
if (map.options.fadeAnimation) { |
|
L.DomUtil.setOpacity(this._container, 0); |
|
} |
|
|
|
this._map = null; |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = L.latLng(latlng); |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
setContent: function (content) { |
|
this._content = content; |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
_close: function () { |
|
var map = this._map; |
|
|
|
if (map) { |
|
map._popup = null; |
|
|
|
map |
|
.removeLayer(this) |
|
.fire('popupclose', {popup: this}); |
|
} |
|
}, |
|
|
|
_initLayout: function () { |
|
var prefix = 'leaflet-popup', |
|
containerClass = prefix + ' ' + this.options.className + ' leaflet-zoom-' + |
|
(this._animated ? 'animated' : 'hide'), |
|
container = this._container = L.DomUtil.create('div', containerClass), |
|
closeButton; |
|
|
|
if (this.options.closeButton) { |
|
closeButton = this._closeButton = |
|
L.DomUtil.create('a', prefix + '-close-button', container); |
|
closeButton.href = '#close'; |
|
closeButton.innerHTML = '×'; |
|
|
|
L.DomEvent.on(closeButton, 'click', this._onCloseButtonClick, this); |
|
} |
|
|
|
var wrapper = this._wrapper = |
|
L.DomUtil.create('div', prefix + '-content-wrapper', container); |
|
L.DomEvent.disableClickPropagation(wrapper); |
|
|
|
this._contentNode = L.DomUtil.create('div', prefix + '-content', wrapper); |
|
L.DomEvent.on(this._contentNode, 'mousewheel', L.DomEvent.stopPropagation); |
|
|
|
this._tipContainer = L.DomUtil.create('div', prefix + '-tip-container', container); |
|
this._tip = L.DomUtil.create('div', prefix + '-tip', this._tipContainer); |
|
}, |
|
|
|
_update: function () { |
|
if (!this._map) { return; } |
|
|
|
this._container.style.visibility = 'hidden'; |
|
|
|
this._updateContent(); |
|
this._updateLayout(); |
|
this._updatePosition(); |
|
|
|
this._container.style.visibility = ''; |
|
|
|
this._adjustPan(); |
|
}, |
|
|
|
_updateContent: function () { |
|
if (!this._content) { return; } |
|
|
|
if (typeof this._content === 'string') { |
|
this._contentNode.innerHTML = this._content; |
|
} else { |
|
while (this._contentNode.hasChildNodes()) { |
|
this._contentNode.removeChild(this._contentNode.firstChild); |
|
} |
|
this._contentNode.appendChild(this._content); |
|
} |
|
this.fire('contentupdate'); |
|
}, |
|
|
|
_updateLayout: function () { |
|
var container = this._contentNode, |
|
style = container.style; |
|
|
|
style.width = ''; |
|
style.whiteSpace = 'nowrap'; |
|
|
|
var width = container.offsetWidth; |
|
width = Math.min(width, this.options.maxWidth); |
|
width = Math.max(width, this.options.minWidth); |
|
|
|
style.width = (width + 1) + 'px'; |
|
style.whiteSpace = ''; |
|
|
|
style.height = ''; |
|
|
|
var height = container.offsetHeight, |
|
maxHeight = this.options.maxHeight, |
|
scrolledClass = 'leaflet-popup-scrolled'; |
|
|
|
if (maxHeight && height > maxHeight) { |
|
style.height = maxHeight + 'px'; |
|
L.DomUtil.addClass(container, scrolledClass); |
|
} else { |
|
L.DomUtil.removeClass(container, scrolledClass); |
|
} |
|
|
|
this._containerWidth = this._container.offsetWidth; |
|
}, |
|
|
|
_updatePosition: function () { |
|
if (!this._map) { return; } |
|
|
|
var pos = this._map.latLngToLayerPoint(this._latlng), |
|
animated = this._animated, |
|
offset = this.options.offset; |
|
|
|
if (animated) { |
|
L.DomUtil.setPosition(this._container, pos); |
|
} |
|
|
|
this._containerBottom = -offset.y - (animated ? 0 : pos.y); |
|
this._containerLeft = -Math.round(this._containerWidth / 2) + offset.x + (animated ? 0 : pos.x); |
|
|
|
//Bottom position the popup in case the height of the popup changes (images loading etc) |
|
this._container.style.bottom = this._containerBottom + 'px'; |
|
this._container.style.left = this._containerLeft + 'px'; |
|
}, |
|
|
|
_zoomAnimation: function (opt) { |
|
var pos = this._map._latLngToNewLayerPoint(this._latlng, opt.zoom, opt.center); |
|
|
|
L.DomUtil.setPosition(this._container, pos); |
|
}, |
|
|
|
_adjustPan: function () { |
|
if (!this.options.autoPan) { return; } |
|
|
|
var map = this._map, |
|
containerHeight = this._container.offsetHeight, |
|
containerWidth = this._containerWidth, |
|
|
|
layerPos = new L.Point(this._containerLeft, -containerHeight - this._containerBottom); |
|
|
|
if (this._animated) { |
|
layerPos._add(L.DomUtil.getPosition(this._container)); |
|
} |
|
|
|
var containerPos = map.layerPointToContainerPoint(layerPos), |
|
padding = this.options.autoPanPadding, |
|
size = map.getSize(), |
|
dx = 0, |
|
dy = 0; |
|
|
|
if (containerPos.x < 0) { |
|
dx = containerPos.x - padding.x; |
|
} |
|
if (containerPos.x + containerWidth > size.x) { |
|
dx = containerPos.x + containerWidth - size.x + padding.x; |
|
} |
|
if (containerPos.y < 0) { |
|
dy = containerPos.y - padding.y; |
|
} |
|
if (containerPos.y + containerHeight > size.y) { |
|
dy = containerPos.y + containerHeight - size.y + padding.y; |
|
} |
|
|
|
if (dx || dy) { |
|
map.panBy(new L.Point(dx, dy)); |
|
} |
|
}, |
|
|
|
_onCloseButtonClick: function (e) { |
|
this._close(); |
|
L.DomEvent.stop(e); |
|
} |
|
}); |
|
|
|
L.popup = function (options, source) { |
|
return new L.Popup(options, source); |
|
}; |
|
|
|
|
|
/* |
|
* Popup extension to L.Marker, adding popup-related methods. |
|
*/ |
|
|
|
L.Marker.include({ |
|
openPopup: function () { |
|
if (this._popup && this._map) { |
|
this._popup.setLatLng(this._latlng); |
|
this._map.openPopup(this._popup); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
closePopup: function () { |
|
if (this._popup) { |
|
this._popup._close(); |
|
} |
|
return this; |
|
}, |
|
|
|
bindPopup: function (content, options) { |
|
var anchor = L.point(this.options.icon.options.popupAnchor) || new L.Point(0, 0); |
|
|
|
anchor = anchor.add(L.Popup.prototype.options.offset); |
|
|
|
if (options && options.offset) { |
|
anchor = anchor.add(options.offset); |
|
} |
|
|
|
options = L.extend({offset: anchor}, options); |
|
|
|
if (!this._popup) { |
|
this |
|
.on('click', this.openPopup, this) |
|
.on('remove', this.closePopup, this) |
|
.on('move', this._movePopup, this); |
|
} |
|
|
|
this._popup = new L.Popup(options, this) |
|
.setContent(content); |
|
|
|
return this; |
|
}, |
|
|
|
unbindPopup: function () { |
|
if (this._popup) { |
|
this._popup = null; |
|
this |
|
.off('click', this.openPopup) |
|
.off('remove', this.closePopup) |
|
.off('move', this._movePopup); |
|
} |
|
return this; |
|
}, |
|
|
|
_movePopup: function (e) { |
|
this._popup.setLatLng(e.latlng); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Adds popup-related methods to L.Map. |
|
*/ |
|
|
|
L.Map.include({ |
|
openPopup: function (popup) { |
|
this.closePopup(); |
|
|
|
this._popup = popup; |
|
|
|
return this |
|
.addLayer(popup) |
|
.fire('popupopen', {popup: this._popup}); |
|
}, |
|
|
|
closePopup: function () { |
|
if (this._popup) { |
|
this._popup._close(); |
|
} |
|
return this; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.LayerGroup is a class to combine several layers into one so that |
|
* you can manipulate the group (e.g. add/remove it) as one layer. |
|
*/ |
|
|
|
L.LayerGroup = L.Class.extend({ |
|
initialize: function (layers) { |
|
this._layers = {}; |
|
|
|
var i, len; |
|
|
|
if (layers) { |
|
for (i = 0, len = layers.length; i < len; i++) { |
|
this.addLayer(layers[i]); |
|
} |
|
} |
|
}, |
|
|
|
addLayer: function (layer) { |
|
var id = L.stamp(layer); |
|
|
|
this._layers[id] = layer; |
|
|
|
if (this._map) { |
|
this._map.addLayer(layer); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.stamp(layer); |
|
|
|
delete this._layers[id]; |
|
|
|
if (this._map) { |
|
this._map.removeLayer(layer); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
clearLayers: function () { |
|
this.eachLayer(this.removeLayer, this); |
|
return this; |
|
}, |
|
|
|
invoke: function (methodName) { |
|
var args = Array.prototype.slice.call(arguments, 1), |
|
i, layer; |
|
|
|
for (i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
layer = this._layers[i]; |
|
|
|
if (layer[methodName]) { |
|
layer[methodName].apply(layer, args); |
|
} |
|
} |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
this.eachLayer(map.addLayer, map); |
|
}, |
|
|
|
onRemove: function (map) { |
|
this.eachLayer(map.removeLayer, map); |
|
this._map = null; |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
eachLayer: function (method, context) { |
|
for (var i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
method.call(context, this._layers[i]); |
|
} |
|
} |
|
}, |
|
|
|
setZIndex: function (zIndex) { |
|
return this.invoke('setZIndex', zIndex); |
|
} |
|
}); |
|
|
|
L.layerGroup = function (layers) { |
|
return new L.LayerGroup(layers); |
|
}; |
|
|
|
|
|
/* |
|
* L.FeatureGroup extends L.LayerGroup by introducing mouse events and additional methods |
|
* shared between a group of interactive layers (like vectors or markers). |
|
*/ |
|
|
|
L.FeatureGroup = L.LayerGroup.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
statics: { |
|
EVENTS: 'click dblclick mouseover mouseout mousemove contextmenu' |
|
}, |
|
|
|
addLayer: function (layer) { |
|
if (this._layers[L.stamp(layer)]) { |
|
return this; |
|
} |
|
|
|
layer.on(L.FeatureGroup.EVENTS, this._propagateEvent, this); |
|
|
|
L.LayerGroup.prototype.addLayer.call(this, layer); |
|
|
|
if (this._popupContent && layer.bindPopup) { |
|
layer.bindPopup(this._popupContent, this._popupOptions); |
|
} |
|
|
|
return this.fire('layeradd', {layer: layer}); |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
layer.off(L.FeatureGroup.EVENTS, this._propagateEvent, this); |
|
|
|
L.LayerGroup.prototype.removeLayer.call(this, layer); |
|
|
|
|
|
if (this._popupContent) { |
|
this.invoke('unbindPopup'); |
|
} |
|
|
|
return this.fire('layerremove', {layer: layer}); |
|
}, |
|
|
|
bindPopup: function (content, options) { |
|
this._popupContent = content; |
|
this._popupOptions = options; |
|
return this.invoke('bindPopup', content, options); |
|
}, |
|
|
|
setStyle: function (style) { |
|
return this.invoke('setStyle', style); |
|
}, |
|
|
|
bringToFront: function () { |
|
return this.invoke('bringToFront'); |
|
}, |
|
|
|
bringToBack: function () { |
|
return this.invoke('bringToBack'); |
|
}, |
|
|
|
getBounds: function () { |
|
var bounds = new L.LatLngBounds(); |
|
|
|
this.eachLayer(function (layer) { |
|
bounds.extend(layer instanceof L.Marker ? layer.getLatLng() : layer.getBounds()); |
|
}); |
|
|
|
return bounds; |
|
}, |
|
|
|
_propagateEvent: function (e) { |
|
e.layer = e.target; |
|
e.target = this; |
|
|
|
this.fire(e.type, e); |
|
} |
|
}); |
|
|
|
L.featureGroup = function (layers) { |
|
return new L.FeatureGroup(layers); |
|
}; |
|
|
|
|
|
/* |
|
* L.Path is a base class for rendering vector paths on a map. Inherited by Polyline, Circle, etc. |
|
*/ |
|
|
|
L.Path = L.Class.extend({ |
|
includes: [L.Mixin.Events], |
|
|
|
statics: { |
|
// how much to extend the clip area around the map view |
|
// (relative to its size, e.g. 0.5 is half the screen in each direction) |
|
// set it so that SVG element doesn't exceed 1280px (vectors flicker on dragend if it is) |
|
CLIP_PADDING: L.Browser.mobile ? |
|
Math.max(0, Math.min(0.5, |
|
(1280 / Math.max(window.innerWidth, window.innerHeight) - 1) / 2)) : 0.5 |
|
}, |
|
|
|
options: { |
|
stroke: true, |
|
color: '#0033ff', |
|
dashArray: null, |
|
weight: 5, |
|
opacity: 0.5, |
|
|
|
fill: false, |
|
fillColor: null, //same as color by default |
|
fillOpacity: 0.2, |
|
|
|
clickable: true |
|
}, |
|
|
|
initialize: function (options) { |
|
L.setOptions(this, options); |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
if (!this._container) { |
|
this._initElements(); |
|
this._initEvents(); |
|
} |
|
|
|
this.projectLatlngs(); |
|
this._updatePath(); |
|
|
|
if (this._container) { |
|
this._map._pathRoot.appendChild(this._container); |
|
} |
|
|
|
this.fire('add'); |
|
|
|
map.on({ |
|
'viewreset': this.projectLatlngs, |
|
'moveend': this._updatePath |
|
}, this); |
|
}, |
|
|
|
addTo: function (map) { |
|
map.addLayer(this); |
|
return this; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map._pathRoot.removeChild(this._container); |
|
|
|
// Need to fire remove event before we set _map to null as the event hooks might need the object |
|
this.fire('remove'); |
|
this._map = null; |
|
|
|
if (L.Browser.vml) { |
|
this._container = null; |
|
this._stroke = null; |
|
this._fill = null; |
|
} |
|
|
|
map.off({ |
|
'viewreset': this.projectLatlngs, |
|
'moveend': this._updatePath |
|
}, this); |
|
}, |
|
|
|
projectLatlngs: function () { |
|
// do all projection stuff here |
|
}, |
|
|
|
setStyle: function (style) { |
|
L.setOptions(this, style); |
|
|
|
if (this._container) { |
|
this._updateStyle(); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
redraw: function () { |
|
if (this._map) { |
|
this.projectLatlngs(); |
|
this._updatePath(); |
|
} |
|
return this; |
|
} |
|
}); |
|
|
|
L.Map.include({ |
|
_updatePathViewport: function () { |
|
var p = L.Path.CLIP_PADDING, |
|
size = this.getSize(), |
|
panePos = L.DomUtil.getPosition(this._mapPane), |
|
min = panePos.multiplyBy(-1)._subtract(size.multiplyBy(p)._round()), |
|
max = min.add(size.multiplyBy(1 + p * 2)._round()); |
|
|
|
this._pathViewport = new L.Bounds(min, max); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Extends L.Path with SVG-specific rendering code. |
|
*/ |
|
|
|
L.Path.SVG_NS = 'http://www.w3.org/2000/svg'; |
|
|
|
L.Browser.svg = !!(document.createElementNS && document.createElementNS(L.Path.SVG_NS, 'svg').createSVGRect); |
|
|
|
L.Path = L.Path.extend({ |
|
statics: { |
|
SVG: L.Browser.svg |
|
}, |
|
|
|
bringToFront: function () { |
|
var root = this._map._pathRoot, |
|
path = this._container; |
|
|
|
if (path && root.lastChild !== path) { |
|
root.appendChild(path); |
|
} |
|
return this; |
|
}, |
|
|
|
bringToBack: function () { |
|
var root = this._map._pathRoot, |
|
path = this._container, |
|
first = root.firstChild; |
|
|
|
if (path && first !== path) { |
|
root.insertBefore(path, first); |
|
} |
|
return this; |
|
}, |
|
|
|
getPathString: function () { |
|
// form path string here |
|
}, |
|
|
|
_createElement: function (name) { |
|
return document.createElementNS(L.Path.SVG_NS, name); |
|
}, |
|
|
|
_initElements: function () { |
|
this._map._initPathRoot(); |
|
this._initPath(); |
|
this._initStyle(); |
|
}, |
|
|
|
_initPath: function () { |
|
this._container = this._createElement('g'); |
|
|
|
this._path = this._createElement('path'); |
|
this._container.appendChild(this._path); |
|
}, |
|
|
|
_initStyle: function () { |
|
if (this.options.stroke) { |
|
this._path.setAttribute('stroke-linejoin', 'round'); |
|
this._path.setAttribute('stroke-linecap', 'round'); |
|
} |
|
if (this.options.fill) { |
|
this._path.setAttribute('fill-rule', 'evenodd'); |
|
} |
|
this._updateStyle(); |
|
}, |
|
|
|
_updateStyle: function () { |
|
if (this.options.stroke) { |
|
this._path.setAttribute('stroke', this.options.color); |
|
this._path.setAttribute('stroke-opacity', this.options.opacity); |
|
this._path.setAttribute('stroke-width', this.options.weight); |
|
if (this.options.dashArray) { |
|
this._path.setAttribute('stroke-dasharray', this.options.dashArray); |
|
} else { |
|
this._path.removeAttribute('stroke-dasharray'); |
|
} |
|
} else { |
|
this._path.setAttribute('stroke', 'none'); |
|
} |
|
if (this.options.fill) { |
|
this._path.setAttribute('fill', this.options.fillColor || this.options.color); |
|
this._path.setAttribute('fill-opacity', this.options.fillOpacity); |
|
} else { |
|
this._path.setAttribute('fill', 'none'); |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
var str = this.getPathString(); |
|
if (!str) { |
|
// fix webkit empty string parsing bug |
|
str = 'M0 0'; |
|
} |
|
this._path.setAttribute('d', str); |
|
}, |
|
|
|
// TODO remove duplication with L.Map |
|
_initEvents: function () { |
|
if (this.options.clickable) { |
|
if (L.Browser.svg || !L.Browser.vml) { |
|
this._path.setAttribute('class', 'leaflet-clickable'); |
|
} |
|
|
|
L.DomEvent.on(this._container, 'click', this._onMouseClick, this); |
|
|
|
var events = ['dblclick', 'mousedown', 'mouseover', |
|
'mouseout', 'mousemove', 'contextmenu']; |
|
for (var i = 0; i < events.length; i++) { |
|
L.DomEvent.on(this._container, events[i], this._fireMouseEvent, this); |
|
} |
|
} |
|
}, |
|
|
|
_onMouseClick: function (e) { |
|
if (this._map.dragging && this._map.dragging.moved()) { return; } |
|
|
|
this._fireMouseEvent(e); |
|
}, |
|
|
|
_fireMouseEvent: function (e) { |
|
if (!this.hasEventListeners(e.type)) { return; } |
|
|
|
var map = this._map, |
|
containerPoint = map.mouseEventToContainerPoint(e), |
|
layerPoint = map.containerPointToLayerPoint(containerPoint), |
|
latlng = map.layerPointToLatLng(layerPoint); |
|
|
|
this.fire(e.type, { |
|
latlng: latlng, |
|
layerPoint: layerPoint, |
|
containerPoint: containerPoint, |
|
originalEvent: e |
|
}); |
|
|
|
if (e.type === 'contextmenu') { |
|
L.DomEvent.preventDefault(e); |
|
} |
|
if (e.type !== 'mousemove') { |
|
L.DomEvent.stopPropagation(e); |
|
} |
|
} |
|
}); |
|
|
|
L.Map.include({ |
|
_initPathRoot: function () { |
|
if (!this._pathRoot) { |
|
this._pathRoot = L.Path.prototype._createElement('svg'); |
|
this._panes.overlayPane.appendChild(this._pathRoot); |
|
|
|
if (this.options.zoomAnimation && L.Browser.any3d) { |
|
this._pathRoot.setAttribute('class', ' leaflet-zoom-animated'); |
|
|
|
this.on({ |
|
'zoomanim': this._animatePathZoom, |
|
'zoomend': this._endPathZoom |
|
}); |
|
} else { |
|
this._pathRoot.setAttribute('class', ' leaflet-zoom-hide'); |
|
} |
|
|
|
this.on('moveend', this._updateSvgViewport); |
|
this._updateSvgViewport(); |
|
} |
|
}, |
|
|
|
_animatePathZoom: function (e) { |
|
var scale = this.getZoomScale(e.zoom), |
|
offset = this._getCenterOffset(e.center)._multiplyBy(-scale)._add(this._pathViewport.min); |
|
|
|
this._pathRoot.style[L.DomUtil.TRANSFORM] = |
|
L.DomUtil.getTranslateString(offset) + ' scale(' + scale + ') '; |
|
|
|
this._pathZooming = true; |
|
}, |
|
|
|
_endPathZoom: function () { |
|
this._pathZooming = false; |
|
}, |
|
|
|
_updateSvgViewport: function () { |
|
|
|
if (this._pathZooming) { |
|
// Do not update SVGs while a zoom animation is going on otherwise the animation will break. |
|
// When the zoom animation ends we will be updated again anyway |
|
// This fixes the case where you do a momentum move and zoom while the move is still ongoing. |
|
return; |
|
} |
|
|
|
this._updatePathViewport(); |
|
|
|
var vp = this._pathViewport, |
|
min = vp.min, |
|
max = vp.max, |
|
width = max.x - min.x, |
|
height = max.y - min.y, |
|
root = this._pathRoot, |
|
pane = this._panes.overlayPane; |
|
|
|
// Hack to make flicker on drag end on mobile webkit less irritating |
|
if (L.Browser.mobileWebkit) { |
|
pane.removeChild(root); |
|
} |
|
|
|
L.DomUtil.setPosition(root, min); |
|
root.setAttribute('width', width); |
|
root.setAttribute('height', height); |
|
root.setAttribute('viewBox', [min.x, min.y, width, height].join(' ')); |
|
|
|
if (L.Browser.mobileWebkit) { |
|
pane.appendChild(root); |
|
} |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Popup extension to L.Path (polylines, polygons, circles), adding popup-related methods. |
|
*/ |
|
|
|
L.Path.include({ |
|
|
|
bindPopup: function (content, options) { |
|
|
|
if (!this._popup || options) { |
|
this._popup = new L.Popup(options, this); |
|
} |
|
|
|
this._popup.setContent(content); |
|
|
|
if (!this._popupHandlersAdded) { |
|
this |
|
.on('click', this._openPopup, this) |
|
.on('remove', this.closePopup, this); |
|
|
|
this._popupHandlersAdded = true; |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
unbindPopup: function () { |
|
if (this._popup) { |
|
this._popup = null; |
|
this |
|
.off('click', this._openPopup) |
|
.off('remove', this.closePopup); |
|
|
|
this._popupHandlersAdded = false; |
|
} |
|
return this; |
|
}, |
|
|
|
openPopup: function (latlng) { |
|
|
|
if (this._popup) { |
|
// open the popup from one of the path's points if not specified |
|
latlng = latlng || this._latlng || |
|
this._latlngs[Math.floor(this._latlngs.length / 2)]; |
|
|
|
this._openPopup({latlng: latlng}); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
closePopup: function () { |
|
if (this._popup) { |
|
this._popup._close(); |
|
} |
|
return this; |
|
}, |
|
|
|
_openPopup: function (e) { |
|
this._popup.setLatLng(e.latlng); |
|
this._map.openPopup(this._popup); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Vector rendering for IE6-8 through VML. |
|
* Thanks to Dmitry Baranovsky and his Raphael library for inspiration! |
|
*/ |
|
|
|
L.Browser.vml = !L.Browser.svg && (function () { |
|
try { |
|
var div = document.createElement('div'); |
|
div.innerHTML = '<v:shape adj="1"/>'; |
|
|
|
var shape = div.firstChild; |
|
shape.style.behavior = 'url(#default#VML)'; |
|
|
|
return shape && (typeof shape.adj === 'object'); |
|
|
|
} catch (e) { |
|
return false; |
|
} |
|
}()); |
|
|
|
L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({ |
|
statics: { |
|
VML: true, |
|
CLIP_PADDING: 0.02 |
|
}, |
|
|
|
_createElement: (function () { |
|
try { |
|
document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml'); |
|
return function (name) { |
|
return document.createElement('<lvml:' + name + ' class="lvml">'); |
|
}; |
|
} catch (e) { |
|
return function (name) { |
|
return document.createElement( |
|
'<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">'); |
|
}; |
|
} |
|
}()), |
|
|
|
_initPath: function () { |
|
var container = this._container = this._createElement('shape'); |
|
L.DomUtil.addClass(container, 'leaflet-vml-shape'); |
|
if (this.options.clickable) { |
|
L.DomUtil.addClass(container, 'leaflet-clickable'); |
|
} |
|
container.coordsize = '1 1'; |
|
|
|
this._path = this._createElement('path'); |
|
container.appendChild(this._path); |
|
|
|
this._map._pathRoot.appendChild(container); |
|
}, |
|
|
|
_initStyle: function () { |
|
this._updateStyle(); |
|
}, |
|
|
|
_updateStyle: function () { |
|
var stroke = this._stroke, |
|
fill = this._fill, |
|
options = this.options, |
|
container = this._container; |
|
|
|
container.stroked = options.stroke; |
|
container.filled = options.fill; |
|
|
|
if (options.stroke) { |
|
if (!stroke) { |
|
stroke = this._stroke = this._createElement('stroke'); |
|
stroke.endcap = 'round'; |
|
container.appendChild(stroke); |
|
} |
|
stroke.weight = options.weight + 'px'; |
|
stroke.color = options.color; |
|
stroke.opacity = options.opacity; |
|
|
|
if (options.dashArray) { |
|
stroke.dashStyle = options.dashArray instanceof Array ? |
|
options.dashArray.join(' ') : |
|
options.dashArray.replace(/ *, */g, ' '); |
|
} else { |
|
stroke.dashStyle = ''; |
|
} |
|
|
|
} else if (stroke) { |
|
container.removeChild(stroke); |
|
this._stroke = null; |
|
} |
|
|
|
if (options.fill) { |
|
if (!fill) { |
|
fill = this._fill = this._createElement('fill'); |
|
container.appendChild(fill); |
|
} |
|
fill.color = options.fillColor || options.color; |
|
fill.opacity = options.fillOpacity; |
|
|
|
} else if (fill) { |
|
container.removeChild(fill); |
|
this._fill = null; |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
var style = this._container.style; |
|
|
|
style.display = 'none'; |
|
this._path.v = this.getPathString() + ' '; // the space fixes IE empty path string bug |
|
style.display = ''; |
|
} |
|
}); |
|
|
|
L.Map.include(L.Browser.svg || !L.Browser.vml ? {} : { |
|
_initPathRoot: function () { |
|
if (this._pathRoot) { return; } |
|
|
|
var root = this._pathRoot = document.createElement('div'); |
|
root.className = 'leaflet-vml-container'; |
|
this._panes.overlayPane.appendChild(root); |
|
|
|
this.on('moveend', this._updatePathViewport); |
|
this._updatePathViewport(); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Vector rendering for all browsers that support canvas. |
|
*/ |
|
|
|
L.Browser.canvas = (function () { |
|
return !!document.createElement('canvas').getContext; |
|
}()); |
|
|
|
L.Path = (L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? L.Path : L.Path.extend({ |
|
statics: { |
|
//CLIP_PADDING: 0.02, // not sure if there's a need to set it to a small value |
|
CANVAS: true, |
|
SVG: false |
|
}, |
|
|
|
redraw: function () { |
|
if (this._map) { |
|
this.projectLatlngs(); |
|
this._requestUpdate(); |
|
} |
|
return this; |
|
}, |
|
|
|
setStyle: function (style) { |
|
L.setOptions(this, style); |
|
|
|
if (this._map) { |
|
this._updateStyle(); |
|
this._requestUpdate(); |
|
} |
|
return this; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map |
|
.off('viewreset', this.projectLatlngs, this) |
|
.off('moveend', this._updatePath, this); |
|
|
|
if (this.options.clickable) { |
|
this._map.off('click', this._onClick, this); |
|
} |
|
|
|
this._requestUpdate(); |
|
|
|
this._map = null; |
|
}, |
|
|
|
_requestUpdate: function () { |
|
if (this._map && !L.Path._updateRequest) { |
|
L.Path._updateRequest = L.Util.requestAnimFrame(this._fireMapMoveEnd, this._map); |
|
} |
|
}, |
|
|
|
_fireMapMoveEnd: function () { |
|
L.Path._updateRequest = null; |
|
this.fire('moveend'); |
|
}, |
|
|
|
_initElements: function () { |
|
this._map._initPathRoot(); |
|
this._ctx = this._map._canvasCtx; |
|
}, |
|
|
|
_updateStyle: function () { |
|
var options = this.options; |
|
|
|
if (options.stroke) { |
|
this._ctx.lineWidth = options.weight; |
|
this._ctx.strokeStyle = options.color; |
|
} |
|
if (options.fill) { |
|
this._ctx.fillStyle = options.fillColor || options.color; |
|
} |
|
}, |
|
|
|
_drawPath: function () { |
|
var i, j, len, len2, point, drawMethod; |
|
|
|
this._ctx.beginPath(); |
|
|
|
for (i = 0, len = this._parts.length; i < len; i++) { |
|
for (j = 0, len2 = this._parts[i].length; j < len2; j++) { |
|
point = this._parts[i][j]; |
|
drawMethod = (j === 0 ? 'move' : 'line') + 'To'; |
|
|
|
this._ctx[drawMethod](point.x, point.y); |
|
} |
|
// TODO refactor ugly hack |
|
if (this instanceof L.Polygon) { |
|
this._ctx.closePath(); |
|
} |
|
} |
|
}, |
|
|
|
_checkIfEmpty: function () { |
|
return !this._parts.length; |
|
}, |
|
|
|
_updatePath: function () { |
|
if (this._checkIfEmpty()) { return; } |
|
|
|
var ctx = this._ctx, |
|
options = this.options; |
|
|
|
this._drawPath(); |
|
ctx.save(); |
|
this._updateStyle(); |
|
|
|
if (options.fill) { |
|
ctx.globalAlpha = options.fillOpacity; |
|
ctx.fill(); |
|
} |
|
|
|
if (options.stroke) { |
|
ctx.globalAlpha = options.opacity; |
|
ctx.stroke(); |
|
} |
|
|
|
ctx.restore(); |
|
|
|
// TODO optimization: 1 fill/stroke for all features with equal style instead of 1 for each feature |
|
}, |
|
|
|
_initEvents: function () { |
|
if (this.options.clickable) { |
|
// TODO hand cursor |
|
// TODO mouseover, mouseout, dblclick |
|
this._map.on('click', this._onClick, this); |
|
} |
|
}, |
|
|
|
_onClick: function (e) { |
|
if (this._containsPoint(e.layerPoint)) { |
|
this.fire('click', { |
|
latlng: e.latlng, |
|
layerPoint: e.layerPoint, |
|
containerPoint: e.containerPoint, |
|
originalEvent: e |
|
}); |
|
} |
|
} |
|
}); |
|
|
|
L.Map.include((L.Path.SVG && !window.L_PREFER_CANVAS) || !L.Browser.canvas ? {} : { |
|
_initPathRoot: function () { |
|
var root = this._pathRoot, |
|
ctx; |
|
|
|
if (!root) { |
|
root = this._pathRoot = document.createElement("canvas"); |
|
root.style.position = 'absolute'; |
|
ctx = this._canvasCtx = root.getContext('2d'); |
|
|
|
ctx.lineCap = "round"; |
|
ctx.lineJoin = "round"; |
|
|
|
this._panes.overlayPane.appendChild(root); |
|
|
|
if (this.options.zoomAnimation) { |
|
this._pathRoot.className = 'leaflet-zoom-animated'; |
|
this.on('zoomanim', this._animatePathZoom); |
|
this.on('zoomend', this._endPathZoom); |
|
} |
|
this.on('moveend', this._updateCanvasViewport); |
|
this._updateCanvasViewport(); |
|
} |
|
}, |
|
|
|
_updateCanvasViewport: function () { |
|
// don't redraw while zooming. See _updateSvgViewport for more details |
|
if (this._pathZooming) { return; } |
|
this._updatePathViewport(); |
|
|
|
var vp = this._pathViewport, |
|
min = vp.min, |
|
size = vp.max.subtract(min), |
|
root = this._pathRoot; |
|
|
|
//TODO check if this works properly on mobile webkit |
|
L.DomUtil.setPosition(root, min); |
|
root.width = size.x; |
|
root.height = size.y; |
|
root.getContext('2d').translate(-min.x, -min.y); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.LineUtil contains different utility functions for line segments |
|
* and polylines (clipping, simplification, distances, etc.) |
|
*/ |
|
|
|
/*jshint bitwise:false */ // allow bitwise oprations for this file |
|
|
|
L.LineUtil = { |
|
|
|
// Simplify polyline with vertex reduction and Douglas-Peucker simplification. |
|
// Improves rendering performance dramatically by lessening the number of points to draw. |
|
|
|
simplify: function (/*Point[]*/ points, /*Number*/ tolerance) { |
|
if (!tolerance || !points.length) { |
|
return points.slice(); |
|
} |
|
|
|
var sqTolerance = tolerance * tolerance; |
|
|
|
// stage 1: vertex reduction |
|
points = this._reducePoints(points, sqTolerance); |
|
|
|
// stage 2: Douglas-Peucker simplification |
|
points = this._simplifyDP(points, sqTolerance); |
|
|
|
return points; |
|
}, |
|
|
|
// distance from a point to a segment between two points |
|
pointToSegmentDistance: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) { |
|
return Math.sqrt(this._sqClosestPointOnSegment(p, p1, p2, true)); |
|
}, |
|
|
|
closestPointOnSegment: function (/*Point*/ p, /*Point*/ p1, /*Point*/ p2) { |
|
return this._sqClosestPointOnSegment(p, p1, p2); |
|
}, |
|
|
|
// Douglas-Peucker simplification, see http://en.wikipedia.org/wiki/Douglas-Peucker_algorithm |
|
_simplifyDP: function (points, sqTolerance) { |
|
|
|
var len = points.length, |
|
ArrayConstructor = typeof Uint8Array !== undefined + '' ? Uint8Array : Array, |
|
markers = new ArrayConstructor(len); |
|
|
|
markers[0] = markers[len - 1] = 1; |
|
|
|
this._simplifyDPStep(points, markers, sqTolerance, 0, len - 1); |
|
|
|
var i, |
|
newPoints = []; |
|
|
|
for (i = 0; i < len; i++) { |
|
if (markers[i]) { |
|
newPoints.push(points[i]); |
|
} |
|
} |
|
|
|
return newPoints; |
|
}, |
|
|
|
_simplifyDPStep: function (points, markers, sqTolerance, first, last) { |
|
|
|
var maxSqDist = 0, |
|
index, i, sqDist; |
|
|
|
for (i = first + 1; i <= last - 1; i++) { |
|
sqDist = this._sqClosestPointOnSegment(points[i], points[first], points[last], true); |
|
|
|
if (sqDist > maxSqDist) { |
|
index = i; |
|
maxSqDist = sqDist; |
|
} |
|
} |
|
|
|
if (maxSqDist > sqTolerance) { |
|
markers[index] = 1; |
|
|
|
this._simplifyDPStep(points, markers, sqTolerance, first, index); |
|
this._simplifyDPStep(points, markers, sqTolerance, index, last); |
|
} |
|
}, |
|
|
|
// reduce points that are too close to each other to a single point |
|
_reducePoints: function (points, sqTolerance) { |
|
var reducedPoints = [points[0]]; |
|
|
|
for (var i = 1, prev = 0, len = points.length; i < len; i++) { |
|
if (this._sqDist(points[i], points[prev]) > sqTolerance) { |
|
reducedPoints.push(points[i]); |
|
prev = i; |
|
} |
|
} |
|
if (prev < len - 1) { |
|
reducedPoints.push(points[len - 1]); |
|
} |
|
return reducedPoints; |
|
}, |
|
|
|
// Cohen-Sutherland line clipping algorithm. |
|
// Used to avoid rendering parts of a polyline that are not currently visible. |
|
|
|
clipSegment: function (a, b, bounds, useLastCode) { |
|
var codeA = useLastCode ? this._lastCode : this._getBitCode(a, bounds), |
|
codeB = this._getBitCode(b, bounds), |
|
|
|
codeOut, p, newCode; |
|
|
|
// save 2nd code to avoid calculating it on the next segment |
|
this._lastCode = codeB; |
|
|
|
while (true) { |
|
// if a,b is inside the clip window (trivial accept) |
|
if (!(codeA | codeB)) { |
|
return [a, b]; |
|
// if a,b is outside the clip window (trivial reject) |
|
} else if (codeA & codeB) { |
|
return false; |
|
// other cases |
|
} else { |
|
codeOut = codeA || codeB, |
|
p = this._getEdgeIntersection(a, b, codeOut, bounds), |
|
newCode = this._getBitCode(p, bounds); |
|
|
|
if (codeOut === codeA) { |
|
a = p; |
|
codeA = newCode; |
|
} else { |
|
b = p; |
|
codeB = newCode; |
|
} |
|
} |
|
} |
|
}, |
|
|
|
_getEdgeIntersection: function (a, b, code, bounds) { |
|
var dx = b.x - a.x, |
|
dy = b.y - a.y, |
|
min = bounds.min, |
|
max = bounds.max; |
|
|
|
if (code & 8) { // top |
|
return new L.Point(a.x + dx * (max.y - a.y) / dy, max.y); |
|
} else if (code & 4) { // bottom |
|
return new L.Point(a.x + dx * (min.y - a.y) / dy, min.y); |
|
} else if (code & 2) { // right |
|
return new L.Point(max.x, a.y + dy * (max.x - a.x) / dx); |
|
} else if (code & 1) { // left |
|
return new L.Point(min.x, a.y + dy * (min.x - a.x) / dx); |
|
} |
|
}, |
|
|
|
_getBitCode: function (/*Point*/ p, bounds) { |
|
var code = 0; |
|
|
|
if (p.x < bounds.min.x) { // left |
|
code |= 1; |
|
} else if (p.x > bounds.max.x) { // right |
|
code |= 2; |
|
} |
|
if (p.y < bounds.min.y) { // bottom |
|
code |= 4; |
|
} else if (p.y > bounds.max.y) { // top |
|
code |= 8; |
|
} |
|
|
|
return code; |
|
}, |
|
|
|
// square distance (to avoid unnecessary Math.sqrt calls) |
|
_sqDist: function (p1, p2) { |
|
var dx = p2.x - p1.x, |
|
dy = p2.y - p1.y; |
|
return dx * dx + dy * dy; |
|
}, |
|
|
|
// return closest point on segment or distance to that point |
|
_sqClosestPointOnSegment: function (p, p1, p2, sqDist) { |
|
var x = p1.x, |
|
y = p1.y, |
|
dx = p2.x - x, |
|
dy = p2.y - y, |
|
dot = dx * dx + dy * dy, |
|
t; |
|
|
|
if (dot > 0) { |
|
t = ((p.x - x) * dx + (p.y - y) * dy) / dot; |
|
|
|
if (t > 1) { |
|
x = p2.x; |
|
y = p2.y; |
|
} else if (t > 0) { |
|
x += dx * t; |
|
y += dy * t; |
|
} |
|
} |
|
|
|
dx = p.x - x; |
|
dy = p.y - y; |
|
|
|
return sqDist ? dx * dx + dy * dy : new L.Point(x, y); |
|
} |
|
}; |
|
|
|
|
|
/* |
|
* L.Polygon is used to display polylines on a map. |
|
*/ |
|
|
|
L.Polyline = L.Path.extend({ |
|
initialize: function (latlngs, options) { |
|
L.Path.prototype.initialize.call(this, options); |
|
|
|
this._latlngs = this._convertLatLngs(latlngs); |
|
}, |
|
|
|
options: { |
|
// how much to simplify the polyline on each zoom level |
|
// more = better performance and smoother look, less = more accurate |
|
smoothFactor: 1.0, |
|
noClip: false |
|
}, |
|
|
|
projectLatlngs: function () { |
|
this._originalPoints = []; |
|
|
|
for (var i = 0, len = this._latlngs.length; i < len; i++) { |
|
this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]); |
|
} |
|
}, |
|
|
|
getPathString: function () { |
|
for (var i = 0, len = this._parts.length, str = ''; i < len; i++) { |
|
str += this._getPathPartStr(this._parts[i]); |
|
} |
|
return str; |
|
}, |
|
|
|
getLatLngs: function () { |
|
return this._latlngs; |
|
}, |
|
|
|
setLatLngs: function (latlngs) { |
|
this._latlngs = this._convertLatLngs(latlngs); |
|
return this.redraw(); |
|
}, |
|
|
|
addLatLng: function (latlng) { |
|
this._latlngs.push(L.latLng(latlng)); |
|
return this.redraw(); |
|
}, |
|
|
|
spliceLatLngs: function () { // (Number index, Number howMany) |
|
var removed = [].splice.apply(this._latlngs, arguments); |
|
this._convertLatLngs(this._latlngs); |
|
this.redraw(); |
|
return removed; |
|
}, |
|
|
|
closestLayerPoint: function (p) { |
|
var minDistance = Infinity, parts = this._parts, p1, p2, minPoint = null; |
|
|
|
for (var j = 0, jLen = parts.length; j < jLen; j++) { |
|
var points = parts[j]; |
|
for (var i = 1, len = points.length; i < len; i++) { |
|
p1 = points[i - 1]; |
|
p2 = points[i]; |
|
var sqDist = L.LineUtil._sqClosestPointOnSegment(p, p1, p2, true); |
|
if (sqDist < minDistance) { |
|
minDistance = sqDist; |
|
minPoint = L.LineUtil._sqClosestPointOnSegment(p, p1, p2); |
|
} |
|
} |
|
} |
|
if (minPoint) { |
|
minPoint.distance = Math.sqrt(minDistance); |
|
} |
|
return minPoint; |
|
}, |
|
|
|
getBounds: function () { |
|
var bounds = new L.LatLngBounds(), |
|
latLngs = this.getLatLngs(), |
|
i, len; |
|
|
|
for (i = 0, len = latLngs.length; i < len; i++) { |
|
bounds.extend(latLngs[i]); |
|
} |
|
|
|
return bounds; |
|
}, |
|
|
|
_convertLatLngs: function (latlngs) { |
|
var i, len; |
|
for (i = 0, len = latlngs.length; i < len; i++) { |
|
if (L.Util.isArray(latlngs[i]) && typeof latlngs[i][0] !== 'number') { |
|
return; |
|
} |
|
latlngs[i] = L.latLng(latlngs[i]); |
|
} |
|
return latlngs; |
|
}, |
|
|
|
_initEvents: function () { |
|
L.Path.prototype._initEvents.call(this); |
|
}, |
|
|
|
_getPathPartStr: function (points) { |
|
var round = L.Path.VML; |
|
|
|
for (var j = 0, len2 = points.length, str = '', p; j < len2; j++) { |
|
p = points[j]; |
|
if (round) { |
|
p._round(); |
|
} |
|
str += (j ? 'L' : 'M') + p.x + ' ' + p.y; |
|
} |
|
return str; |
|
}, |
|
|
|
_clipPoints: function () { |
|
var points = this._originalPoints, |
|
len = points.length, |
|
i, k, segment; |
|
|
|
if (this.options.noClip) { |
|
this._parts = [points]; |
|
return; |
|
} |
|
|
|
this._parts = []; |
|
|
|
var parts = this._parts, |
|
vp = this._map._pathViewport, |
|
lu = L.LineUtil; |
|
|
|
for (i = 0, k = 0; i < len - 1; i++) { |
|
segment = lu.clipSegment(points[i], points[i + 1], vp, i); |
|
if (!segment) { |
|
continue; |
|
} |
|
|
|
parts[k] = parts[k] || []; |
|
parts[k].push(segment[0]); |
|
|
|
// if segment goes out of screen, or it's the last one, it's the end of the line part |
|
if ((segment[1] !== points[i + 1]) || (i === len - 2)) { |
|
parts[k].push(segment[1]); |
|
k++; |
|
} |
|
} |
|
}, |
|
|
|
// simplify each clipped part of the polyline |
|
_simplifyPoints: function () { |
|
var parts = this._parts, |
|
lu = L.LineUtil; |
|
|
|
for (var i = 0, len = parts.length; i < len; i++) { |
|
parts[i] = lu.simplify(parts[i], this.options.smoothFactor); |
|
} |
|
}, |
|
|
|
_updatePath: function () { |
|
if (!this._map) { return; } |
|
|
|
this._clipPoints(); |
|
this._simplifyPoints(); |
|
|
|
L.Path.prototype._updatePath.call(this); |
|
} |
|
}); |
|
|
|
L.polyline = function (latlngs, options) { |
|
return new L.Polyline(latlngs, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.PolyUtil contains utility functions for polygons (clipping, etc.). |
|
*/ |
|
|
|
/*jshint bitwise:false */ // allow bitwise operations here |
|
|
|
L.PolyUtil = {}; |
|
|
|
/* |
|
* Sutherland-Hodgeman polygon clipping algorithm. |
|
* Used to avoid rendering parts of a polygon that are not currently visible. |
|
*/ |
|
L.PolyUtil.clipPolygon = function (points, bounds) { |
|
var clippedPoints, |
|
edges = [1, 4, 2, 8], |
|
i, j, k, |
|
a, b, |
|
len, edge, p, |
|
lu = L.LineUtil; |
|
|
|
for (i = 0, len = points.length; i < len; i++) { |
|
points[i]._code = lu._getBitCode(points[i], bounds); |
|
} |
|
|
|
// for each edge (left, bottom, right, top) |
|
for (k = 0; k < 4; k++) { |
|
edge = edges[k]; |
|
clippedPoints = []; |
|
|
|
for (i = 0, len = points.length, j = len - 1; i < len; j = i++) { |
|
a = points[i]; |
|
b = points[j]; |
|
|
|
// if a is inside the clip window |
|
if (!(a._code & edge)) { |
|
// if b is outside the clip window (a->b goes out of screen) |
|
if (b._code & edge) { |
|
p = lu._getEdgeIntersection(b, a, edge, bounds); |
|
p._code = lu._getBitCode(p, bounds); |
|
clippedPoints.push(p); |
|
} |
|
clippedPoints.push(a); |
|
|
|
// else if b is inside the clip window (a->b enters the screen) |
|
} else if (!(b._code & edge)) { |
|
p = lu._getEdgeIntersection(b, a, edge, bounds); |
|
p._code = lu._getBitCode(p, bounds); |
|
clippedPoints.push(p); |
|
} |
|
} |
|
points = clippedPoints; |
|
} |
|
|
|
return points; |
|
}; |
|
|
|
|
|
/* |
|
* L.Polygon is used to display polygons on a map. |
|
*/ |
|
|
|
L.Polygon = L.Polyline.extend({ |
|
options: { |
|
fill: true |
|
}, |
|
|
|
initialize: function (latlngs, options) { |
|
L.Polyline.prototype.initialize.call(this, latlngs, options); |
|
|
|
if (latlngs && L.Util.isArray(latlngs[0]) && (typeof latlngs[0][0] !== 'number')) { |
|
this._latlngs = this._convertLatLngs(latlngs[0]); |
|
this._holes = latlngs.slice(1); |
|
} |
|
}, |
|
|
|
projectLatlngs: function () { |
|
L.Polyline.prototype.projectLatlngs.call(this); |
|
|
|
// project polygon holes points |
|
// TODO move this logic to Polyline to get rid of duplication |
|
this._holePoints = []; |
|
|
|
if (!this._holes) { return; } |
|
|
|
var i, j, len, len2; |
|
|
|
for (i = 0, len = this._holes.length; i < len; i++) { |
|
this._holePoints[i] = []; |
|
|
|
for (j = 0, len2 = this._holes[i].length; j < len2; j++) { |
|
this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]); |
|
} |
|
} |
|
}, |
|
|
|
_clipPoints: function () { |
|
var points = this._originalPoints, |
|
newParts = []; |
|
|
|
this._parts = [points].concat(this._holePoints); |
|
|
|
if (this.options.noClip) { return; } |
|
|
|
for (var i = 0, len = this._parts.length; i < len; i++) { |
|
var clipped = L.PolyUtil.clipPolygon(this._parts[i], this._map._pathViewport); |
|
if (clipped.length) { |
|
newParts.push(clipped); |
|
} |
|
} |
|
|
|
this._parts = newParts; |
|
}, |
|
|
|
_getPathPartStr: function (points) { |
|
var str = L.Polyline.prototype._getPathPartStr.call(this, points); |
|
return str + (L.Browser.svg ? 'z' : 'x'); |
|
} |
|
}); |
|
|
|
L.polygon = function (latlngs, options) { |
|
return new L.Polygon(latlngs, options); |
|
}; |
|
|
|
|
|
/* |
|
* Contains L.MultiPolyline and L.MultiPolygon layers. |
|
*/ |
|
|
|
(function () { |
|
function createMulti(Klass) { |
|
|
|
return L.FeatureGroup.extend({ |
|
|
|
initialize: function (latlngs, options) { |
|
this._layers = {}; |
|
this._options = options; |
|
this.setLatLngs(latlngs); |
|
}, |
|
|
|
setLatLngs: function (latlngs) { |
|
var i = 0, |
|
len = latlngs.length; |
|
|
|
this.eachLayer(function (layer) { |
|
if (i < len) { |
|
layer.setLatLngs(latlngs[i++]); |
|
} else { |
|
this.removeLayer(layer); |
|
} |
|
}, this); |
|
|
|
while (i < len) { |
|
this.addLayer(new Klass(latlngs[i++], this._options)); |
|
} |
|
|
|
return this; |
|
} |
|
}); |
|
} |
|
|
|
L.MultiPolyline = createMulti(L.Polyline); |
|
L.MultiPolygon = createMulti(L.Polygon); |
|
|
|
L.multiPolyline = function (latlngs, options) { |
|
return new L.MultiPolyline(latlngs, options); |
|
}; |
|
|
|
L.multiPolygon = function (latlngs, options) { |
|
return new L.MultiPolygon(latlngs, options); |
|
}; |
|
}()); |
|
|
|
|
|
/* |
|
* L.Rectangle extends Polygon and creates a rectangle when passed a LatLngBounds object. |
|
*/ |
|
|
|
L.Rectangle = L.Polygon.extend({ |
|
initialize: function (latLngBounds, options) { |
|
L.Polygon.prototype.initialize.call(this, this._boundsToLatLngs(latLngBounds), options); |
|
}, |
|
|
|
setBounds: function (latLngBounds) { |
|
this.setLatLngs(this._boundsToLatLngs(latLngBounds)); |
|
}, |
|
|
|
_boundsToLatLngs: function (latLngBounds) { |
|
latLngBounds = L.latLngBounds(latLngBounds); |
|
return [ |
|
latLngBounds.getSouthWest(), |
|
latLngBounds.getNorthWest(), |
|
latLngBounds.getNorthEast(), |
|
latLngBounds.getSouthEast() |
|
]; |
|
} |
|
}); |
|
|
|
L.rectangle = function (latLngBounds, options) { |
|
return new L.Rectangle(latLngBounds, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Circle is a circle overlay (with a certain radius in meters). |
|
*/ |
|
|
|
L.Circle = L.Path.extend({ |
|
initialize: function (latlng, radius, options) { |
|
L.Path.prototype.initialize.call(this, options); |
|
|
|
this._latlng = L.latLng(latlng); |
|
this._mRadius = radius; |
|
}, |
|
|
|
options: { |
|
fill: true |
|
}, |
|
|
|
setLatLng: function (latlng) { |
|
this._latlng = L.latLng(latlng); |
|
return this.redraw(); |
|
}, |
|
|
|
setRadius: function (radius) { |
|
this._mRadius = radius; |
|
return this.redraw(); |
|
}, |
|
|
|
projectLatlngs: function () { |
|
var lngRadius = this._getLngRadius(), |
|
latlng2 = new L.LatLng(this._latlng.lat, this._latlng.lng - lngRadius), |
|
point2 = this._map.latLngToLayerPoint(latlng2); |
|
|
|
this._point = this._map.latLngToLayerPoint(this._latlng); |
|
this._radius = Math.max(Math.round(this._point.x - point2.x), 1); |
|
}, |
|
|
|
getBounds: function () { |
|
var lngRadius = this._getLngRadius(), |
|
latRadius = (this._mRadius / 40075017) * 360, |
|
latlng = this._latlng, |
|
sw = new L.LatLng(latlng.lat - latRadius, latlng.lng - lngRadius), |
|
ne = new L.LatLng(latlng.lat + latRadius, latlng.lng + lngRadius); |
|
|
|
return new L.LatLngBounds(sw, ne); |
|
}, |
|
|
|
getLatLng: function () { |
|
return this._latlng; |
|
}, |
|
|
|
getPathString: function () { |
|
var p = this._point, |
|
r = this._radius; |
|
|
|
if (this._checkIfEmpty()) { |
|
return ''; |
|
} |
|
|
|
if (L.Browser.svg) { |
|
return "M" + p.x + "," + (p.y - r) + |
|
"A" + r + "," + r + ",0,1,1," + |
|
(p.x - 0.1) + "," + (p.y - r) + " z"; |
|
} else { |
|
p._round(); |
|
r = Math.round(r); |
|
return "AL " + p.x + "," + p.y + " " + r + "," + r + " 0," + (65535 * 360); |
|
} |
|
}, |
|
|
|
getRadius: function () { |
|
return this._mRadius; |
|
}, |
|
|
|
// TODO Earth hardcoded, move into projection code! |
|
|
|
_getLatRadius: function () { |
|
return (this._mRadius / 40075017) * 360; |
|
}, |
|
|
|
_getLngRadius: function () { |
|
return this._getLatRadius() / Math.cos(L.LatLng.DEG_TO_RAD * this._latlng.lat); |
|
}, |
|
|
|
_checkIfEmpty: function () { |
|
if (!this._map) { |
|
return false; |
|
} |
|
var vp = this._map._pathViewport, |
|
r = this._radius, |
|
p = this._point; |
|
|
|
return p.x - r > vp.max.x || p.y - r > vp.max.y || |
|
p.x + r < vp.min.x || p.y + r < vp.min.y; |
|
} |
|
}); |
|
|
|
L.circle = function (latlng, radius, options) { |
|
return new L.Circle(latlng, radius, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.CircleMarker is a circle overlay with a permanent pixel radius. |
|
*/ |
|
|
|
L.CircleMarker = L.Circle.extend({ |
|
options: { |
|
radius: 10, |
|
weight: 2 |
|
}, |
|
|
|
initialize: function (latlng, options) { |
|
L.Circle.prototype.initialize.call(this, latlng, null, options); |
|
this._radius = this.options.radius; |
|
}, |
|
|
|
projectLatlngs: function () { |
|
this._point = this._map.latLngToLayerPoint(this._latlng); |
|
}, |
|
|
|
_updateStyle : function () { |
|
L.Circle.prototype._updateStyle.call(this); |
|
this.setRadius(this.options.radius); |
|
}, |
|
|
|
setRadius: function (radius) { |
|
this.options.radius = this._radius = radius; |
|
return this.redraw(); |
|
} |
|
}); |
|
|
|
L.circleMarker = function (latlng, options) { |
|
return new L.CircleMarker(latlng, options); |
|
}; |
|
|
|
|
|
/* |
|
* Extends L.Polyline to be able to manually detect clicks on Canvas-rendered polylines. |
|
*/ |
|
|
|
L.Polyline.include(!L.Path.CANVAS ? {} : { |
|
_containsPoint: function (p, closed) { |
|
var i, j, k, len, len2, dist, part, |
|
w = this.options.weight / 2; |
|
|
|
if (L.Browser.touch) { |
|
w += 10; // polyline click tolerance on touch devices |
|
} |
|
|
|
for (i = 0, len = this._parts.length; i < len; i++) { |
|
part = this._parts[i]; |
|
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) { |
|
if (!closed && (j === 0)) { |
|
continue; |
|
} |
|
|
|
dist = L.LineUtil.pointToSegmentDistance(p, part[k], part[j]); |
|
|
|
if (dist <= w) { |
|
return true; |
|
} |
|
} |
|
} |
|
return false; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Extends L.Polygon to be able to manually detect clicks on Canvas-rendered polygons. |
|
*/ |
|
|
|
L.Polygon.include(!L.Path.CANVAS ? {} : { |
|
_containsPoint: function (p) { |
|
var inside = false, |
|
part, p1, p2, |
|
i, j, k, |
|
len, len2; |
|
|
|
// TODO optimization: check if within bounds first |
|
|
|
if (L.Polyline.prototype._containsPoint.call(this, p, true)) { |
|
// click on polygon border |
|
return true; |
|
} |
|
|
|
// ray casting algorithm for detecting if point is in polygon |
|
|
|
for (i = 0, len = this._parts.length; i < len; i++) { |
|
part = this._parts[i]; |
|
|
|
for (j = 0, len2 = part.length, k = len2 - 1; j < len2; k = j++) { |
|
p1 = part[j]; |
|
p2 = part[k]; |
|
|
|
if (((p1.y > p.y) !== (p2.y > p.y)) && |
|
(p.x < (p2.x - p1.x) * (p.y - p1.y) / (p2.y - p1.y) + p1.x)) { |
|
inside = !inside; |
|
} |
|
} |
|
} |
|
|
|
return inside; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Extends L.Circle with Canvas-specific code. |
|
*/ |
|
|
|
L.Circle.include(!L.Path.CANVAS ? {} : { |
|
_drawPath: function () { |
|
var p = this._point; |
|
this._ctx.beginPath(); |
|
this._ctx.arc(p.x, p.y, this._radius, 0, Math.PI * 2, false); |
|
}, |
|
|
|
_containsPoint: function (p) { |
|
var center = this._point, |
|
w2 = this.options.stroke ? this.options.weight / 2 : 0; |
|
|
|
return (p.distanceTo(center) <= this._radius + w2); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.GeoJSON turns any GeoJSON data into a Leaflet layer. |
|
*/ |
|
|
|
L.GeoJSON = L.FeatureGroup.extend({ |
|
|
|
initialize: function (geojson, options) { |
|
L.setOptions(this, options); |
|
|
|
this._layers = {}; |
|
|
|
if (geojson) { |
|
this.addData(geojson); |
|
} |
|
}, |
|
|
|
addData: function (geojson) { |
|
var features = L.Util.isArray(geojson) ? geojson : geojson.features, |
|
i, len; |
|
|
|
if (features) { |
|
for (i = 0, len = features.length; i < len; i++) { |
|
// Only add this if geometry or geometries are set and not null |
|
if (features[i].geometries || features[i].geometry || features[i].features) { |
|
this.addData(features[i]); |
|
} |
|
} |
|
return this; |
|
} |
|
|
|
var options = this.options; |
|
|
|
if (options.filter && !options.filter(geojson)) { return; } |
|
|
|
var layer = L.GeoJSON.geometryToLayer(geojson, options.pointToLayer); |
|
layer.feature = geojson; |
|
|
|
layer.defaultOptions = layer.options; |
|
this.resetStyle(layer); |
|
|
|
if (options.onEachFeature) { |
|
options.onEachFeature(geojson, layer); |
|
} |
|
|
|
return this.addLayer(layer); |
|
}, |
|
|
|
resetStyle: function (layer) { |
|
var style = this.options.style; |
|
if (style) { |
|
// reset any custom styles |
|
L.Util.extend(layer.options, layer.defaultOptions); |
|
|
|
this._setLayerStyle(layer, style); |
|
} |
|
}, |
|
|
|
setStyle: function (style) { |
|
this.eachLayer(function (layer) { |
|
this._setLayerStyle(layer, style); |
|
}, this); |
|
}, |
|
|
|
_setLayerStyle: function (layer, style) { |
|
if (typeof style === 'function') { |
|
style = style(layer.feature); |
|
} |
|
if (layer.setStyle) { |
|
layer.setStyle(style); |
|
} |
|
} |
|
}); |
|
|
|
L.extend(L.GeoJSON, { |
|
geometryToLayer: function (geojson, pointToLayer) { |
|
var geometry = geojson.type === 'Feature' ? geojson.geometry : geojson, |
|
coords = geometry.coordinates, |
|
layers = [], |
|
latlng, latlngs, i, len, layer; |
|
|
|
switch (geometry.type) { |
|
case 'Point': |
|
latlng = this.coordsToLatLng(coords); |
|
return pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng); |
|
|
|
case 'MultiPoint': |
|
for (i = 0, len = coords.length; i < len; i++) { |
|
latlng = this.coordsToLatLng(coords[i]); |
|
layer = pointToLayer ? pointToLayer(geojson, latlng) : new L.Marker(latlng); |
|
layers.push(layer); |
|
} |
|
return new L.FeatureGroup(layers); |
|
|
|
case 'LineString': |
|
latlngs = this.coordsToLatLngs(coords); |
|
return new L.Polyline(latlngs); |
|
|
|
case 'Polygon': |
|
latlngs = this.coordsToLatLngs(coords, 1); |
|
return new L.Polygon(latlngs); |
|
|
|
case 'MultiLineString': |
|
latlngs = this.coordsToLatLngs(coords, 1); |
|
return new L.MultiPolyline(latlngs); |
|
|
|
case 'MultiPolygon': |
|
latlngs = this.coordsToLatLngs(coords, 2); |
|
return new L.MultiPolygon(latlngs); |
|
|
|
case 'GeometryCollection': |
|
for (i = 0, len = geometry.geometries.length; i < len; i++) { |
|
layer = this.geometryToLayer({ |
|
geometry: geometry.geometries[i], |
|
type: 'Feature', |
|
properties: geojson.properties |
|
}, pointToLayer); |
|
layers.push(layer); |
|
} |
|
return new L.FeatureGroup(layers); |
|
|
|
default: |
|
throw new Error('Invalid GeoJSON object.'); |
|
} |
|
}, |
|
|
|
coordsToLatLng: function (coords, reverse) { // (Array, Boolean) -> LatLng |
|
var lat = parseFloat(coords[reverse ? 0 : 1]), |
|
lng = parseFloat(coords[reverse ? 1 : 0]); |
|
|
|
return new L.LatLng(lat, lng); |
|
}, |
|
|
|
coordsToLatLngs: function (coords, levelsDeep, reverse) { // (Array, Number, Boolean) -> Array |
|
var latlng, |
|
latlngs = [], |
|
i, len; |
|
|
|
for (i = 0, len = coords.length; i < len; i++) { |
|
latlng = levelsDeep ? |
|
this.coordsToLatLngs(coords[i], levelsDeep - 1, reverse) : |
|
this.coordsToLatLng(coords[i], reverse); |
|
|
|
latlngs.push(latlng); |
|
} |
|
|
|
return latlngs; |
|
} |
|
}); |
|
|
|
L.geoJson = function (geojson, options) { |
|
return new L.GeoJSON(geojson, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.DomEvent contains functions for working with DOM events. |
|
*/ |
|
|
|
L.DomEvent = { |
|
/* inspired by John Resig, Dean Edwards and YUI addEvent implementations */ |
|
addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object]) |
|
|
|
var id = L.stamp(fn), |
|
key = '_leaflet_' + type + id, |
|
handler, originalHandler, newType; |
|
|
|
if (obj[key]) { return this; } |
|
|
|
handler = function (e) { |
|
return fn.call(context || obj, e || L.DomEvent._getEvent()); |
|
}; |
|
|
|
if (L.Browser.msTouch && type.indexOf('touch') === 0) { |
|
return this.addMsTouchListener(obj, type, handler, id); |
|
} |
|
if (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) { |
|
this.addDoubleTapListener(obj, handler, id); |
|
} |
|
|
|
if ('addEventListener' in obj) { |
|
|
|
if (type === 'mousewheel') { |
|
obj.addEventListener('DOMMouseScroll', handler, false); |
|
obj.addEventListener(type, handler, false); |
|
|
|
} else if ((type === 'mouseenter') || (type === 'mouseleave')) { |
|
|
|
originalHandler = handler; |
|
newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout'); |
|
|
|
handler = function (e) { |
|
if (!L.DomEvent._checkMouse(obj, e)) { return; } |
|
return originalHandler(e); |
|
}; |
|
|
|
obj.addEventListener(newType, handler, false); |
|
|
|
} else { |
|
obj.addEventListener(type, handler, false); |
|
} |
|
|
|
} else if ('attachEvent' in obj) { |
|
obj.attachEvent("on" + type, handler); |
|
} |
|
|
|
obj[key] = handler; |
|
|
|
return this; |
|
}, |
|
|
|
removeListener: function (obj, type, fn) { // (HTMLElement, String, Function) |
|
|
|
var id = L.stamp(fn), |
|
key = '_leaflet_' + type + id, |
|
handler = obj[key]; |
|
|
|
if (!handler) { return; } |
|
|
|
if (L.Browser.msTouch && type.indexOf('touch') === 0) { |
|
this.removeMsTouchListener(obj, type, id); |
|
} else if (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) { |
|
this.removeDoubleTapListener(obj, id); |
|
|
|
} else if ('removeEventListener' in obj) { |
|
|
|
if (type === 'mousewheel') { |
|
obj.removeEventListener('DOMMouseScroll', handler, false); |
|
obj.removeEventListener(type, handler, false); |
|
|
|
} else if ((type === 'mouseenter') || (type === 'mouseleave')) { |
|
obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false); |
|
} else { |
|
obj.removeEventListener(type, handler, false); |
|
} |
|
} else if ('detachEvent' in obj) { |
|
obj.detachEvent("on" + type, handler); |
|
} |
|
|
|
obj[key] = null; |
|
|
|
return this; |
|
}, |
|
|
|
stopPropagation: function (e) { |
|
|
|
if (e.stopPropagation) { |
|
e.stopPropagation(); |
|
} else { |
|
e.cancelBubble = true; |
|
} |
|
return this; |
|
}, |
|
|
|
disableClickPropagation: function (el) { |
|
|
|
var stop = L.DomEvent.stopPropagation; |
|
|
|
for (var i = L.Draggable.START.length - 1; i >= 0; i--) { |
|
L.DomEvent.addListener(el, L.Draggable.START[i], stop); |
|
} |
|
|
|
return L.DomEvent |
|
.addListener(el, 'click', stop) |
|
.addListener(el, 'dblclick', stop); |
|
}, |
|
|
|
preventDefault: function (e) { |
|
|
|
if (e.preventDefault) { |
|
e.preventDefault(); |
|
} else { |
|
e.returnValue = false; |
|
} |
|
return this; |
|
}, |
|
|
|
stop: function (e) { |
|
return L.DomEvent.preventDefault(e).stopPropagation(e); |
|
}, |
|
|
|
getMousePosition: function (e, container) { |
|
|
|
var body = document.body, |
|
docEl = document.documentElement, |
|
x = e.pageX ? e.pageX : e.clientX + body.scrollLeft + docEl.scrollLeft, |
|
y = e.pageY ? e.pageY : e.clientY + body.scrollTop + docEl.scrollTop, |
|
pos = new L.Point(x, y); |
|
|
|
return (container ? pos._subtract(L.DomUtil.getViewportOffset(container)) : pos); |
|
}, |
|
|
|
getWheelDelta: function (e) { |
|
|
|
var delta = 0; |
|
|
|
if (e.wheelDelta) { |
|
delta = e.wheelDelta / 120; |
|
} |
|
if (e.detail) { |
|
delta = -e.detail / 3; |
|
} |
|
return delta; |
|
}, |
|
|
|
// check if element really left/entered the event target (for mouseenter/mouseleave) |
|
_checkMouse: function (el, e) { |
|
|
|
var related = e.relatedTarget; |
|
|
|
if (!related) { return true; } |
|
|
|
try { |
|
while (related && (related !== el)) { |
|
related = related.parentNode; |
|
} |
|
} catch (err) { |
|
return false; |
|
} |
|
return (related !== el); |
|
}, |
|
|
|
_getEvent: function () { // evil magic for IE |
|
/*jshint noarg:false */ |
|
var e = window.event; |
|
if (!e) { |
|
var caller = arguments.callee.caller; |
|
while (caller) { |
|
e = caller['arguments'][0]; |
|
if (e && window.Event === e.constructor) { |
|
break; |
|
} |
|
caller = caller.caller; |
|
} |
|
} |
|
return e; |
|
} |
|
}; |
|
|
|
L.DomEvent.on = L.DomEvent.addListener; |
|
L.DomEvent.off = L.DomEvent.removeListener; |
|
|
|
|
|
/* |
|
* L.Draggable allows you to add dragging capabilities to any element. Supports mobile devices too. |
|
*/ |
|
|
|
L.Draggable = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
statics: { |
|
START: L.Browser.touch ? ['touchstart', 'mousedown'] : ['mousedown'], |
|
END: { |
|
mousedown: 'mouseup', |
|
touchstart: 'touchend', |
|
MSPointerDown: 'touchend' |
|
}, |
|
MOVE: { |
|
mousedown: 'mousemove', |
|
touchstart: 'touchmove', |
|
MSPointerDown: 'touchmove' |
|
}, |
|
TAP_TOLERANCE: 15 |
|
}, |
|
|
|
initialize: function (element, dragStartTarget, longPress) { |
|
this._element = element; |
|
this._dragStartTarget = dragStartTarget || element; |
|
this._longPress = longPress && !L.Browser.msTouch; |
|
}, |
|
|
|
enable: function () { |
|
if (this._enabled) { return; } |
|
|
|
for (var i = L.Draggable.START.length - 1; i >= 0; i--) { |
|
L.DomEvent.on(this._dragStartTarget, L.Draggable.START[i], this._onDown, this); |
|
} |
|
this._enabled = true; |
|
}, |
|
|
|
disable: function () { |
|
if (!this._enabled) { return; } |
|
|
|
for (var i = L.Draggable.START.length - 1; i >= 0; i--) { |
|
L.DomEvent.off(this._dragStartTarget, L.Draggable.START[i], this._onDown, this); |
|
} |
|
this._enabled = false; |
|
this._moved = false; |
|
}, |
|
|
|
_onDown: function (e) { |
|
if ((!L.Browser.touch && e.shiftKey) || |
|
((e.which !== 1) && (e.button !== 1) && !e.touches)) { return; } |
|
|
|
L.DomEvent.preventDefault(e); |
|
L.DomEvent.stopPropagation(e); |
|
|
|
if (L.Draggable._disabled) { return; } |
|
|
|
this._simulateClick = true; |
|
|
|
if (e.touches && e.touches.length > 1) { |
|
this._simulateClick = false; |
|
clearTimeout(this._longPressTimeout); |
|
return; |
|
} |
|
|
|
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e), |
|
el = first.target; |
|
|
|
if (L.Browser.touch && el.tagName.toLowerCase() === 'a') { |
|
L.DomUtil.addClass(el, 'leaflet-active'); |
|
} |
|
|
|
this._moved = false; |
|
if (this._moving) { return; } |
|
|
|
this._startPoint = new L.Point(first.clientX, first.clientY); |
|
this._startPos = this._newPos = L.DomUtil.getPosition(this._element); |
|
|
|
//Touch contextmenu event emulation |
|
if (e.touches && e.touches.length === 1 && L.Browser.touch && this._longPress) { |
|
this._longPressTimeout = setTimeout(L.bind(function () { |
|
var dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0; |
|
|
|
if (dist < L.Draggable.TAP_TOLERANCE) { |
|
this._simulateClick = false; |
|
this._onUp(); |
|
this._simulateEvent('contextmenu', first); |
|
} |
|
}, this), 1000); |
|
} |
|
|
|
L.DomEvent.on(document, L.Draggable.MOVE[e.type], this._onMove, this); |
|
L.DomEvent.on(document, L.Draggable.END[e.type], this._onUp, this); |
|
}, |
|
|
|
_onMove: function (e) { |
|
if (e.touches && e.touches.length > 1) { return; } |
|
|
|
var first = (e.touches && e.touches.length === 1 ? e.touches[0] : e), |
|
newPoint = new L.Point(first.clientX, first.clientY), |
|
diffVec = newPoint.subtract(this._startPoint); |
|
|
|
if (!diffVec.x && !diffVec.y) { return; } |
|
|
|
L.DomEvent.preventDefault(e); |
|
|
|
if (!this._moved) { |
|
this.fire('dragstart'); |
|
this._moved = true; |
|
|
|
this._startPos = L.DomUtil.getPosition(this._element).subtract(diffVec); |
|
|
|
if (!L.Browser.touch) { |
|
L.DomUtil.disableTextSelection(); |
|
this._setMovingCursor(); |
|
} |
|
} |
|
|
|
this._newPos = this._startPos.add(diffVec); |
|
this._moving = true; |
|
|
|
L.Util.cancelAnimFrame(this._animRequest); |
|
this._animRequest = L.Util.requestAnimFrame(this._updatePosition, this, true, this._dragStartTarget); |
|
}, |
|
|
|
_updatePosition: function () { |
|
this.fire('predrag'); |
|
L.DomUtil.setPosition(this._element, this._newPos); |
|
this.fire('drag'); |
|
}, |
|
|
|
_onUp: function (e) { |
|
var simulateClickTouch; |
|
clearTimeout(this._longPressTimeout); |
|
if (this._simulateClick && e.changedTouches) { |
|
var first = e.changedTouches[0], |
|
el = first.target, |
|
dist = (this._newPos && this._newPos.distanceTo(this._startPos)) || 0; |
|
|
|
if (el.tagName.toLowerCase() === 'a') { |
|
L.DomUtil.removeClass(el, 'leaflet-active'); |
|
} |
|
|
|
if (dist < L.Draggable.TAP_TOLERANCE) { |
|
simulateClickTouch = first; |
|
} |
|
} |
|
|
|
if (!L.Browser.touch) { |
|
L.DomUtil.enableTextSelection(); |
|
this._restoreCursor(); |
|
} |
|
|
|
for (var i in L.Draggable.MOVE) { |
|
if (L.Draggable.MOVE.hasOwnProperty(i)) { |
|
L.DomEvent.off(document, L.Draggable.MOVE[i], this._onMove); |
|
L.DomEvent.off(document, L.Draggable.END[i], this._onUp); |
|
} |
|
} |
|
|
|
if (this._moved) { |
|
// ensure drag is not fired after dragend |
|
L.Util.cancelAnimFrame(this._animRequest); |
|
|
|
this.fire('dragend'); |
|
} |
|
this._moving = false; |
|
|
|
if (simulateClickTouch) { |
|
this._moved = false; |
|
this._simulateEvent('click', simulateClickTouch); |
|
} |
|
}, |
|
|
|
_setMovingCursor: function () { |
|
L.DomUtil.addClass(document.body, 'leaflet-dragging'); |
|
}, |
|
|
|
_restoreCursor: function () { |
|
L.DomUtil.removeClass(document.body, 'leaflet-dragging'); |
|
}, |
|
|
|
_simulateEvent: function (type, e) { |
|
var simulatedEvent = document.createEvent('MouseEvents'); |
|
|
|
simulatedEvent.initMouseEvent( |
|
type, true, true, window, 1, |
|
e.screenX, e.screenY, |
|
e.clientX, e.clientY, |
|
false, false, false, false, 0, null); |
|
|
|
e.target.dispatchEvent(simulatedEvent); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
L.Handler is a base class for handler classes that are used internally to inject |
|
interaction features like dragging to classes like Map and Marker. |
|
*/ |
|
|
|
L.Handler = L.Class.extend({ |
|
initialize: function (map) { |
|
this._map = map; |
|
}, |
|
|
|
enable: function () { |
|
if (this._enabled) { return; } |
|
|
|
this._enabled = true; |
|
this.addHooks(); |
|
}, |
|
|
|
disable: function () { |
|
if (!this._enabled) { return; } |
|
|
|
this._enabled = false; |
|
this.removeHooks(); |
|
}, |
|
|
|
enabled: function () { |
|
return !!this._enabled; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.MapDrag is used to make the map draggable (with panning inertia), enabled by default. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
dragging: true, |
|
|
|
inertia: !L.Browser.android23, |
|
inertiaDeceleration: 3400, // px/s^2 |
|
inertiaMaxSpeed: Infinity, // px/s |
|
inertiaThreshold: L.Browser.touch ? 32 : 18, // ms |
|
easeLinearity: 0.25, |
|
|
|
longPress: true, |
|
|
|
// TODO refactor, move to CRS |
|
worldCopyJump: false |
|
}); |
|
|
|
L.Map.Drag = L.Handler.extend({ |
|
addHooks: function () { |
|
if (!this._draggable) { |
|
var map = this._map; |
|
|
|
this._draggable = new L.Draggable(map._mapPane, map._container, map.options.longPress); |
|
|
|
this._draggable.on({ |
|
'dragstart': this._onDragStart, |
|
'drag': this._onDrag, |
|
'dragend': this._onDragEnd |
|
}, this); |
|
|
|
if (map.options.worldCopyJump) { |
|
this._draggable.on('predrag', this._onPreDrag, this); |
|
map.on('viewreset', this._onViewReset, this); |
|
} |
|
} |
|
this._draggable.enable(); |
|
}, |
|
|
|
removeHooks: function () { |
|
this._draggable.disable(); |
|
}, |
|
|
|
moved: function () { |
|
return this._draggable && this._draggable._moved; |
|
}, |
|
|
|
_onDragStart: function () { |
|
var map = this._map; |
|
|
|
if (map._panAnim) { |
|
map._panAnim.stop(); |
|
} |
|
|
|
map |
|
.fire('movestart') |
|
.fire('dragstart'); |
|
|
|
if (map.options.inertia) { |
|
this._positions = []; |
|
this._times = []; |
|
} |
|
}, |
|
|
|
_onDrag: function () { |
|
if (this._map.options.inertia) { |
|
var time = this._lastTime = +new Date(), |
|
pos = this._lastPos = this._draggable._newPos; |
|
|
|
this._positions.push(pos); |
|
this._times.push(time); |
|
|
|
if (time - this._times[0] > 200) { |
|
this._positions.shift(); |
|
this._times.shift(); |
|
} |
|
} |
|
|
|
this._map |
|
.fire('move') |
|
.fire('drag'); |
|
}, |
|
|
|
_onViewReset: function () { |
|
// TODO fix hardcoded Earth values |
|
var pxCenter = this._map.getSize()._divideBy(2), |
|
pxWorldCenter = this._map.latLngToLayerPoint(new L.LatLng(0, 0)); |
|
|
|
this._initialWorldOffset = pxWorldCenter.subtract(pxCenter).x; |
|
this._worldWidth = this._map.project(new L.LatLng(0, 180)).x; |
|
}, |
|
|
|
_onPreDrag: function () { |
|
// TODO refactor to be able to adjust map pane position after zoom |
|
var worldWidth = this._worldWidth, |
|
halfWidth = Math.round(worldWidth / 2), |
|
dx = this._initialWorldOffset, |
|
x = this._draggable._newPos.x, |
|
newX1 = (x - halfWidth + dx) % worldWidth + halfWidth - dx, |
|
newX2 = (x + halfWidth + dx) % worldWidth - halfWidth - dx, |
|
newX = Math.abs(newX1 + dx) < Math.abs(newX2 + dx) ? newX1 : newX2; |
|
|
|
this._draggable._newPos.x = newX; |
|
}, |
|
|
|
_onDragEnd: function () { |
|
var map = this._map, |
|
options = map.options, |
|
delay = +new Date() - this._lastTime, |
|
|
|
noInertia = !options.inertia || delay > options.inertiaThreshold || !this._positions[0]; |
|
|
|
if (noInertia) { |
|
map.fire('moveend'); |
|
|
|
} else { |
|
|
|
var direction = this._lastPos.subtract(this._positions[0]), |
|
duration = (this._lastTime + delay - this._times[0]) / 1000, |
|
ease = options.easeLinearity, |
|
|
|
speedVector = direction.multiplyBy(ease / duration), |
|
speed = speedVector.distanceTo(new L.Point(0, 0)), |
|
|
|
limitedSpeed = Math.min(options.inertiaMaxSpeed, speed), |
|
limitedSpeedVector = speedVector.multiplyBy(limitedSpeed / speed), |
|
|
|
decelerationDuration = limitedSpeed / (options.inertiaDeceleration * ease), |
|
offset = limitedSpeedVector.multiplyBy(-decelerationDuration / 2).round(); |
|
|
|
L.Util.requestAnimFrame(function () { |
|
map.panBy(offset, decelerationDuration, ease); |
|
}); |
|
} |
|
|
|
map.fire('dragend'); |
|
|
|
if (options.maxBounds) { |
|
// TODO predrag validation instead of animation |
|
L.Util.requestAnimFrame(this._panInsideMaxBounds, map, true, map._container); |
|
} |
|
}, |
|
|
|
_panInsideMaxBounds: function () { |
|
this.panInsideBounds(this.options.maxBounds); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'dragging', L.Map.Drag); |
|
|
|
|
|
/* |
|
* L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
doubleClickZoom: true |
|
}); |
|
|
|
L.Map.DoubleClickZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
this._map.on('dblclick', this._onDoubleClick); |
|
}, |
|
|
|
removeHooks: function () { |
|
this._map.off('dblclick', this._onDoubleClick); |
|
}, |
|
|
|
_onDoubleClick: function (e) { |
|
this.setView(e.latlng, this._zoom + 1); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'doubleClickZoom', L.Map.DoubleClickZoom); |
|
|
|
|
|
/* |
|
* L.Handler.ScrollWheelZoom is used by L.Map to enable mouse scroll wheel zoom on the map. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
scrollWheelZoom: true |
|
}); |
|
|
|
L.Map.ScrollWheelZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
L.DomEvent.on(this._map._container, 'mousewheel', this._onWheelScroll, this); |
|
this._delta = 0; |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.off(this._map._container, 'mousewheel', this._onWheelScroll); |
|
}, |
|
|
|
_onWheelScroll: function (e) { |
|
var delta = L.DomEvent.getWheelDelta(e); |
|
|
|
this._delta += delta; |
|
this._lastMousePos = this._map.mouseEventToContainerPoint(e); |
|
|
|
if (!this._startTime) { |
|
this._startTime = +new Date(); |
|
} |
|
|
|
var left = Math.max(40 - (+new Date() - this._startTime), 0); |
|
|
|
clearTimeout(this._timer); |
|
this._timer = setTimeout(L.bind(this._performZoom, this), left); |
|
|
|
L.DomEvent.preventDefault(e); |
|
L.DomEvent.stopPropagation(e); |
|
}, |
|
|
|
_performZoom: function () { |
|
var map = this._map, |
|
delta = this._delta, |
|
zoom = map.getZoom(); |
|
|
|
delta = delta > 0 ? Math.ceil(delta) : Math.round(delta); |
|
delta = Math.max(Math.min(delta, 4), -4); |
|
delta = map._limitZoom(zoom + delta) - zoom; |
|
|
|
this._delta = 0; |
|
|
|
this._startTime = null; |
|
|
|
if (!delta) { return; } |
|
|
|
var newZoom = zoom + delta, |
|
newCenter = this._getCenterForScrollWheelZoom(newZoom); |
|
|
|
map.setView(newCenter, newZoom); |
|
}, |
|
|
|
_getCenterForScrollWheelZoom: function (newZoom) { |
|
var map = this._map, |
|
scale = map.getZoomScale(newZoom), |
|
viewHalf = map.getSize()._divideBy(2), |
|
centerOffset = this._lastMousePos._subtract(viewHalf)._multiplyBy(1 - 1 / scale), |
|
newCenterPoint = map._getTopLeftPoint()._add(viewHalf)._add(centerOffset); |
|
|
|
return map.unproject(newCenterPoint); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'scrollWheelZoom', L.Map.ScrollWheelZoom); |
|
|
|
|
|
/* |
|
* Extends the event handling code with double tap support for mobile browsers. |
|
*/ |
|
|
|
L.extend(L.DomEvent, { |
|
|
|
_touchstart: L.Browser.msTouch ? 'MSPointerDown' : 'touchstart', |
|
_touchend: L.Browser.msTouch ? 'MSPointerUp' : 'touchend', |
|
|
|
// inspired by Zepto touch code by Thomas Fuchs |
|
addDoubleTapListener: function (obj, handler, id) { |
|
var last, |
|
doubleTap = false, |
|
delay = 250, |
|
touch, |
|
pre = '_leaflet_', |
|
touchstart = this._touchstart, |
|
touchend = this._touchend, |
|
trackedTouches = []; |
|
|
|
function onTouchStart(e) { |
|
var count; |
|
if (L.Browser.msTouch) { |
|
trackedTouches.push(e.pointerId); |
|
count = trackedTouches.length; |
|
} else { |
|
count = e.touches.length; |
|
} |
|
if (count > 1) { |
|
return; |
|
} |
|
|
|
var now = Date.now(), |
|
delta = now - (last || now); |
|
|
|
touch = e.touches ? e.touches[0] : e; |
|
doubleTap = (delta > 0 && delta <= delay); |
|
last = now; |
|
} |
|
|
|
function onTouchEnd(e) { |
|
/*jshint forin:false */ |
|
if (L.Browser.msTouch) { |
|
var idx = trackedTouches.indexOf(e.pointerId); |
|
if (idx === -1) { |
|
return; |
|
} |
|
trackedTouches.splice(idx, 1); |
|
} |
|
|
|
if (doubleTap) { |
|
if (L.Browser.msTouch) { |
|
//Work around .type being readonly with MSPointer* events |
|
var newTouch = { }, |
|
prop; |
|
|
|
for (var i in touch) { |
|
prop = touch[i]; |
|
if (typeof prop === 'function') { |
|
newTouch[i] = prop.bind(touch); |
|
} else { |
|
newTouch[i] = prop; |
|
} |
|
} |
|
touch = newTouch; |
|
} |
|
touch.type = 'dblclick'; |
|
handler(touch); |
|
last = null; |
|
} |
|
} |
|
obj[pre + touchstart + id] = onTouchStart; |
|
obj[pre + touchend + id] = onTouchEnd; |
|
|
|
//On msTouch we need to listen on the document otherwise a drag starting on the map and moving off screen will not come through to us |
|
// so we will lose track of how many touches are ongoing |
|
var endElement = L.Browser.msTouch ? document.documentElement : obj; |
|
|
|
obj.addEventListener(touchstart, onTouchStart, false); |
|
endElement.addEventListener(touchend, onTouchEnd, false); |
|
if (L.Browser.msTouch) { |
|
endElement.addEventListener('MSPointerCancel', onTouchEnd, false); |
|
} |
|
return this; |
|
}, |
|
|
|
removeDoubleTapListener: function (obj, id) { |
|
var pre = '_leaflet_'; |
|
obj.removeEventListener(this._touchstart, obj[pre + this._touchstart + id], false); |
|
(L.Browser.msTouch ? document.documentElement : obj).removeEventListener(this._touchend, obj[pre + this._touchend + id], false); |
|
if (L.Browser.msTouch) { |
|
document.documentElement.removeEventListener('MSPointerCancel', obj[pre + this._touchend + id], false); |
|
} |
|
return this; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Extends L.DomEvent to provide touch support for Internet Explorer and Windows-based devices. |
|
*/ |
|
|
|
L.extend(L.DomEvent, { |
|
|
|
_msTouches: [], |
|
_msDocumentListener: false, |
|
|
|
// Provides a touch events wrapper for msPointer events. |
|
// Based on changes by veproza https://github.com/CloudMade/Leaflet/pull/1019 |
|
|
|
addMsTouchListener: function (obj, type, handler, id) { |
|
|
|
switch (type) { |
|
case 'touchstart': |
|
return this.addMsTouchListenerStart(obj, type, handler, id); |
|
case 'touchend': |
|
return this.addMsTouchListenerEnd(obj, type, handler, id); |
|
case 'touchmove': |
|
return this.addMsTouchListenerMove(obj, type, handler, id); |
|
default: |
|
throw 'Unknown touch event type'; |
|
} |
|
}, |
|
|
|
addMsTouchListenerStart: function (obj, type, handler, id) { |
|
var pre = '_leaflet_', |
|
touches = this._msTouches; |
|
|
|
var cb = function (e) { |
|
|
|
var alreadyInArray = false; |
|
for (var i = 0; i < touches.length; i++) { |
|
if (touches[i].pointerId === e.pointerId) { |
|
alreadyInArray = true; |
|
break; |
|
} |
|
} |
|
if (!alreadyInArray) { |
|
touches.push(e); |
|
} |
|
|
|
e.touches = touches.slice(); |
|
e.changedTouches = [e]; |
|
|
|
handler(e); |
|
}; |
|
|
|
obj[pre + 'touchstart' + id] = cb; |
|
obj.addEventListener('MSPointerDown', cb, false); |
|
|
|
// need to also listen for end events to keep the _msTouches list accurate |
|
// this needs to be on the body and never go away |
|
if (!this._msDocumentListener) { |
|
var internalCb = function (e) { |
|
for (var i = 0; i < touches.length; i++) { |
|
if (touches[i].pointerId === e.pointerId) { |
|
touches.splice(i, 1); |
|
break; |
|
} |
|
} |
|
}; |
|
//We listen on the documentElement as any drags that end by moving the touch off the screen get fired there |
|
document.documentElement.addEventListener('MSPointerUp', internalCb, false); |
|
document.documentElement.addEventListener('MSPointerCancel', internalCb, false); |
|
|
|
this._msDocumentListener = true; |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
addMsTouchListenerMove: function (obj, type, handler, id) { |
|
var pre = '_leaflet_', |
|
touches = this._msTouches; |
|
|
|
function cb(e) { |
|
|
|
// don't fire touch moves when mouse isn't down |
|
if (e.pointerType === e.MSPOINTER_TYPE_MOUSE && e.buttons === 0) { return; } |
|
|
|
for (var i = 0; i < touches.length; i++) { |
|
if (touches[i].pointerId === e.pointerId) { |
|
touches[i] = e; |
|
break; |
|
} |
|
} |
|
|
|
e.touches = touches.slice(); |
|
e.changedTouches = [e]; |
|
|
|
handler(e); |
|
} |
|
|
|
obj[pre + 'touchmove' + id] = cb; |
|
obj.addEventListener('MSPointerMove', cb, false); |
|
|
|
return this; |
|
}, |
|
|
|
addMsTouchListenerEnd: function (obj, type, handler, id) { |
|
var pre = '_leaflet_', |
|
touches = this._msTouches; |
|
|
|
var cb = function (e) { |
|
for (var i = 0; i < touches.length; i++) { |
|
if (touches[i].pointerId === e.pointerId) { |
|
touches.splice(i, 1); |
|
break; |
|
} |
|
} |
|
|
|
e.touches = touches.slice(); |
|
e.changedTouches = [e]; |
|
|
|
handler(e); |
|
}; |
|
|
|
obj[pre + 'touchend' + id] = cb; |
|
obj.addEventListener('MSPointerUp', cb, false); |
|
obj.addEventListener('MSPointerCancel', cb, false); |
|
|
|
return this; |
|
}, |
|
|
|
removeMsTouchListener: function (obj, type, id) { |
|
var pre = '_leaflet_', |
|
cb = obj[pre + type + id]; |
|
|
|
switch (type) { |
|
case 'touchstart': |
|
obj.removeEventListener('MSPointerDown', cb, false); |
|
break; |
|
case 'touchmove': |
|
obj.removeEventListener('MSPointerMove', cb, false); |
|
break; |
|
case 'touchend': |
|
obj.removeEventListener('MSPointerUp', cb, false); |
|
obj.removeEventListener('MSPointerCancel', cb, false); |
|
break; |
|
} |
|
|
|
return this; |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.TouchZoom is used by L.Map to add pinch zoom on supported mobile browsers. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
touchZoom: L.Browser.touch && !L.Browser.android23 |
|
}); |
|
|
|
L.Map.TouchZoom = L.Handler.extend({ |
|
addHooks: function () { |
|
L.DomEvent.on(this._map._container, 'touchstart', this._onTouchStart, this); |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.off(this._map._container, 'touchstart', this._onTouchStart, this); |
|
}, |
|
|
|
_onTouchStart: function (e) { |
|
var map = this._map; |
|
|
|
if (!e.touches || e.touches.length !== 2 || map._animatingZoom || this._zooming) { return; } |
|
|
|
var p1 = map.mouseEventToLayerPoint(e.touches[0]), |
|
p2 = map.mouseEventToLayerPoint(e.touches[1]), |
|
viewCenter = map._getCenterLayerPoint(); |
|
|
|
this._startCenter = p1.add(p2)._divideBy(2); |
|
this._startDist = p1.distanceTo(p2); |
|
|
|
this._moved = false; |
|
this._zooming = true; |
|
|
|
this._centerOffset = viewCenter.subtract(this._startCenter); |
|
|
|
if (map._panAnim) { |
|
map._panAnim.stop(); |
|
} |
|
|
|
L.DomEvent |
|
.on(document, 'touchmove', this._onTouchMove, this) |
|
.on(document, 'touchend', this._onTouchEnd, this); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_onTouchMove: function (e) { |
|
if (!e.touches || e.touches.length !== 2) { return; } |
|
|
|
var map = this._map; |
|
|
|
var p1 = map.mouseEventToLayerPoint(e.touches[0]), |
|
p2 = map.mouseEventToLayerPoint(e.touches[1]); |
|
|
|
this._scale = p1.distanceTo(p2) / this._startDist; |
|
this._delta = p1._add(p2)._divideBy(2)._subtract(this._startCenter); |
|
|
|
if (this._scale === 1) { return; } |
|
|
|
if (!this._moved) { |
|
L.DomUtil.addClass(map._mapPane, 'leaflet-zoom-anim leaflet-touching'); |
|
|
|
map |
|
.fire('movestart') |
|
.fire('zoomstart') |
|
._prepareTileBg(); |
|
|
|
this._moved = true; |
|
} |
|
|
|
L.Util.cancelAnimFrame(this._animRequest); |
|
this._animRequest = L.Util.requestAnimFrame( |
|
this._updateOnMove, this, true, this._map._container); |
|
|
|
L.DomEvent.preventDefault(e); |
|
}, |
|
|
|
_updateOnMove: function () { |
|
var map = this._map, |
|
origin = this._getScaleOrigin(), |
|
center = map.layerPointToLatLng(origin); |
|
|
|
map.fire('zoomanim', { |
|
center: center, |
|
zoom: map.getScaleZoom(this._scale) |
|
}); |
|
|
|
// Used 2 translates instead of transform-origin because of a very strange bug - |
|
// it didn't count the origin on the first touch-zoom but worked correctly afterwards |
|
|
|
map._tileBg.style[L.DomUtil.TRANSFORM] = |
|
L.DomUtil.getTranslateString(this._delta) + ' ' + |
|
L.DomUtil.getScaleString(this._scale, this._startCenter); |
|
}, |
|
|
|
_onTouchEnd: function () { |
|
if (!this._moved || !this._zooming) { return; } |
|
|
|
var map = this._map; |
|
|
|
this._zooming = false; |
|
L.DomUtil.removeClass(map._mapPane, 'leaflet-touching'); |
|
|
|
L.DomEvent |
|
.off(document, 'touchmove', this._onTouchMove) |
|
.off(document, 'touchend', this._onTouchEnd); |
|
|
|
var origin = this._getScaleOrigin(), |
|
center = map.layerPointToLatLng(origin), |
|
|
|
oldZoom = map.getZoom(), |
|
floatZoomDelta = map.getScaleZoom(this._scale) - oldZoom, |
|
roundZoomDelta = (floatZoomDelta > 0 ? |
|
Math.ceil(floatZoomDelta) : Math.floor(floatZoomDelta)), |
|
|
|
zoom = map._limitZoom(oldZoom + roundZoomDelta); |
|
|
|
map.fire('zoomanim', { |
|
center: center, |
|
zoom: zoom |
|
}); |
|
|
|
map._runAnimation(center, zoom, map.getZoomScale(zoom) / this._scale, origin, true); |
|
}, |
|
|
|
_getScaleOrigin: function () { |
|
var centerOffset = this._centerOffset.subtract(this._delta).divideBy(this._scale); |
|
return this._startCenter.add(centerOffset); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'touchZoom', L.Map.TouchZoom); |
|
|
|
|
|
/* |
|
* L.Handler.ShiftDragZoom is used to add shift-drag zoom interaction to the map |
|
* (zoom to a selected bounding box), enabled by default. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
boxZoom: true |
|
}); |
|
|
|
L.Map.BoxZoom = L.Handler.extend({ |
|
initialize: function (map) { |
|
this._map = map; |
|
this._container = map._container; |
|
this._pane = map._panes.overlayPane; |
|
}, |
|
|
|
addHooks: function () { |
|
L.DomEvent.on(this._container, 'mousedown', this._onMouseDown, this); |
|
}, |
|
|
|
removeHooks: function () { |
|
L.DomEvent.off(this._container, 'mousedown', this._onMouseDown); |
|
}, |
|
|
|
_onMouseDown: function (e) { |
|
if (!e.shiftKey || ((e.which !== 1) && (e.button !== 1))) { return false; } |
|
|
|
L.DomUtil.disableTextSelection(); |
|
|
|
this._startLayerPoint = this._map.mouseEventToLayerPoint(e); |
|
|
|
this._box = L.DomUtil.create('div', 'leaflet-zoom-box', this._pane); |
|
L.DomUtil.setPosition(this._box, this._startLayerPoint); |
|
|
|
//TODO refactor: move cursor to styles |
|
this._container.style.cursor = 'crosshair'; |
|
|
|
L.DomEvent |
|
.on(document, 'mousemove', this._onMouseMove, this) |
|
.on(document, 'mouseup', this._onMouseUp, this) |
|
.preventDefault(e); |
|
|
|
this._map.fire("boxzoomstart"); |
|
}, |
|
|
|
_onMouseMove: function (e) { |
|
var startPoint = this._startLayerPoint, |
|
box = this._box, |
|
|
|
layerPoint = this._map.mouseEventToLayerPoint(e), |
|
offset = layerPoint.subtract(startPoint), |
|
|
|
newPos = new L.Point( |
|
Math.min(layerPoint.x, startPoint.x), |
|
Math.min(layerPoint.y, startPoint.y)); |
|
|
|
L.DomUtil.setPosition(box, newPos); |
|
|
|
// TODO refactor: remove hardcoded 4 pixels |
|
box.style.width = (Math.max(0, Math.abs(offset.x) - 4)) + 'px'; |
|
box.style.height = (Math.max(0, Math.abs(offset.y) - 4)) + 'px'; |
|
}, |
|
|
|
_onMouseUp: function (e) { |
|
this._pane.removeChild(this._box); |
|
this._container.style.cursor = ''; |
|
|
|
L.DomUtil.enableTextSelection(); |
|
|
|
L.DomEvent |
|
.off(document, 'mousemove', this._onMouseMove) |
|
.off(document, 'mouseup', this._onMouseUp); |
|
|
|
var map = this._map, |
|
layerPoint = map.mouseEventToLayerPoint(e); |
|
|
|
if (this._startLayerPoint.equals(layerPoint)) { return; } |
|
|
|
var bounds = new L.LatLngBounds( |
|
map.layerPointToLatLng(this._startLayerPoint), |
|
map.layerPointToLatLng(layerPoint)); |
|
|
|
map.fitBounds(bounds); |
|
|
|
map.fire("boxzoomend", { |
|
boxZoomBounds: bounds |
|
}); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'boxZoom', L.Map.BoxZoom); |
|
|
|
|
|
/* |
|
* L.Map.Keyboard is handling keyboard interaction with the map, enabled by default. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
keyboard: true, |
|
keyboardPanOffset: 80, |
|
keyboardZoomOffset: 1 |
|
}); |
|
|
|
L.Map.Keyboard = L.Handler.extend({ |
|
|
|
keyCodes: { |
|
left: [37], |
|
right: [39], |
|
down: [40], |
|
up: [38], |
|
zoomIn: [187, 107, 61], |
|
zoomOut: [189, 109, 173] |
|
}, |
|
|
|
initialize: function (map) { |
|
this._map = map; |
|
|
|
this._setPanOffset(map.options.keyboardPanOffset); |
|
this._setZoomOffset(map.options.keyboardZoomOffset); |
|
}, |
|
|
|
addHooks: function () { |
|
var container = this._map._container; |
|
|
|
// make the container focusable by tabbing |
|
if (container.tabIndex === -1) { |
|
container.tabIndex = "0"; |
|
} |
|
|
|
L.DomEvent |
|
.on(container, 'focus', this._onFocus, this) |
|
.on(container, 'blur', this._onBlur, this) |
|
.on(container, 'mousedown', this._onMouseDown, this); |
|
|
|
this._map |
|
.on('focus', this._addHooks, this) |
|
.on('blur', this._removeHooks, this); |
|
}, |
|
|
|
removeHooks: function () { |
|
this._removeHooks(); |
|
|
|
var container = this._map._container; |
|
|
|
L.DomEvent |
|
.off(container, 'focus', this._onFocus, this) |
|
.off(container, 'blur', this._onBlur, this) |
|
.off(container, 'mousedown', this._onMouseDown, this); |
|
|
|
this._map |
|
.off('focus', this._addHooks, this) |
|
.off('blur', this._removeHooks, this); |
|
}, |
|
|
|
_onMouseDown: function () { |
|
if (!this._focused) { |
|
this._map._container.focus(); |
|
} |
|
}, |
|
|
|
_onFocus: function () { |
|
this._focused = true; |
|
this._map.fire('focus'); |
|
}, |
|
|
|
_onBlur: function () { |
|
this._focused = false; |
|
this._map.fire('blur'); |
|
}, |
|
|
|
_setPanOffset: function (pan) { |
|
var keys = this._panKeys = {}, |
|
codes = this.keyCodes, |
|
i, len; |
|
|
|
for (i = 0, len = codes.left.length; i < len; i++) { |
|
keys[codes.left[i]] = [-1 * pan, 0]; |
|
} |
|
for (i = 0, len = codes.right.length; i < len; i++) { |
|
keys[codes.right[i]] = [pan, 0]; |
|
} |
|
for (i = 0, len = codes.down.length; i < len; i++) { |
|
keys[codes.down[i]] = [0, pan]; |
|
} |
|
for (i = 0, len = codes.up.length; i < len; i++) { |
|
keys[codes.up[i]] = [0, -1 * pan]; |
|
} |
|
}, |
|
|
|
_setZoomOffset: function (zoom) { |
|
var keys = this._zoomKeys = {}, |
|
codes = this.keyCodes, |
|
i, len; |
|
|
|
for (i = 0, len = codes.zoomIn.length; i < len; i++) { |
|
keys[codes.zoomIn[i]] = zoom; |
|
} |
|
for (i = 0, len = codes.zoomOut.length; i < len; i++) { |
|
keys[codes.zoomOut[i]] = -zoom; |
|
} |
|
}, |
|
|
|
_addHooks: function () { |
|
L.DomEvent.on(document, 'keydown', this._onKeyDown, this); |
|
}, |
|
|
|
_removeHooks: function () { |
|
L.DomEvent.off(document, 'keydown', this._onKeyDown, this); |
|
}, |
|
|
|
_onKeyDown: function (e) { |
|
var key = e.keyCode, |
|
map = this._map; |
|
|
|
if (this._panKeys.hasOwnProperty(key)) { |
|
map.panBy(this._panKeys[key]); |
|
|
|
if (map.options.maxBounds) { |
|
map.panInsideBounds(map.options.maxBounds); |
|
} |
|
|
|
} else if (this._zoomKeys.hasOwnProperty(key)) { |
|
map.setZoom(map.getZoom() + this._zoomKeys[key]); |
|
|
|
} else { |
|
return; |
|
} |
|
|
|
L.DomEvent.stop(e); |
|
} |
|
}); |
|
|
|
L.Map.addInitHook('addHandler', 'keyboard', L.Map.Keyboard); |
|
|
|
|
|
/* |
|
* L.Handler.MarkerDrag is used internally by L.Marker to make the markers draggable. |
|
*/ |
|
|
|
L.Handler.MarkerDrag = L.Handler.extend({ |
|
initialize: function (marker) { |
|
this._marker = marker; |
|
}, |
|
|
|
addHooks: function () { |
|
var icon = this._marker._icon; |
|
if (!this._draggable) { |
|
this._draggable = new L.Draggable(icon, icon) |
|
.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 () { |
|
this._marker |
|
.closePopup() |
|
.fire('movestart') |
|
.fire('dragstart'); |
|
}, |
|
|
|
_onDrag: function () { |
|
var marker = this._marker, |
|
shadow = marker._shadow, |
|
iconPos = L.DomUtil.getPosition(marker._icon), |
|
latlng = marker._map.layerPointToLatLng(iconPos); |
|
|
|
// update shadow position |
|
if (shadow) { |
|
L.DomUtil.setPosition(shadow, iconPos); |
|
} |
|
|
|
marker._latlng = latlng; |
|
|
|
marker |
|
.fire('move', {latlng: latlng}) |
|
.fire('drag'); |
|
}, |
|
|
|
_onDragEnd: function () { |
|
this._marker |
|
.fire('moveend') |
|
.fire('dragend'); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Handler.PolyEdit is an editing handler for polylines and polygons. |
|
*/ |
|
|
|
L.Handler.PolyEdit = L.Handler.extend({ |
|
options: { |
|
icon: new L.DivIcon({ |
|
iconSize: new L.Point(8, 8), |
|
className: 'leaflet-div-icon leaflet-editing-icon' |
|
}) |
|
}, |
|
|
|
initialize: function (poly, options) { |
|
this._poly = poly; |
|
L.setOptions(this, options); |
|
}, |
|
|
|
addHooks: function () { |
|
if (this._poly._map) { |
|
if (!this._markerGroup) { |
|
this._initMarkers(); |
|
} |
|
this._poly._map.addLayer(this._markerGroup); |
|
} |
|
}, |
|
|
|
removeHooks: function () { |
|
if (this._poly._map) { |
|
this._poly._map.removeLayer(this._markerGroup); |
|
delete this._markerGroup; |
|
delete this._markers; |
|
} |
|
}, |
|
|
|
updateMarkers: function () { |
|
this._markerGroup.clearLayers(); |
|
this._initMarkers(); |
|
}, |
|
|
|
_initMarkers: function () { |
|
if (!this._markerGroup) { |
|
this._markerGroup = new L.LayerGroup(); |
|
} |
|
this._markers = []; |
|
|
|
var latlngs = this._poly._latlngs, |
|
i, j, len, marker; |
|
|
|
// TODO refactor holes implementation in Polygon to support it here |
|
|
|
for (i = 0, len = latlngs.length; i < len; i++) { |
|
|
|
marker = this._createMarker(latlngs[i], i); |
|
marker.on('click', this._onMarkerClick, this); |
|
this._markers.push(marker); |
|
} |
|
|
|
var markerLeft, markerRight; |
|
|
|
for (i = 0, j = len - 1; i < len; j = i++) { |
|
if (i === 0 && !(L.Polygon && (this._poly instanceof L.Polygon))) { |
|
continue; |
|
} |
|
|
|
markerLeft = this._markers[j]; |
|
markerRight = this._markers[i]; |
|
|
|
this._createMiddleMarker(markerLeft, markerRight); |
|
this._updatePrevNext(markerLeft, markerRight); |
|
} |
|
}, |
|
|
|
_createMarker: function (latlng, index) { |
|
var marker = new L.Marker(latlng, { |
|
draggable: true, |
|
icon: this.options.icon |
|
}); |
|
|
|
marker._origLatLng = latlng; |
|
marker._index = index; |
|
|
|
marker.on('drag', this._onMarkerDrag, this); |
|
marker.on('dragend', this._fireEdit, this); |
|
|
|
this._markerGroup.addLayer(marker); |
|
|
|
return marker; |
|
}, |
|
|
|
_fireEdit: function () { |
|
this._poly.fire('edit'); |
|
}, |
|
|
|
_onMarkerDrag: function (e) { |
|
var marker = e.target; |
|
|
|
L.extend(marker._origLatLng, marker._latlng); |
|
|
|
if (marker._middleLeft) { |
|
marker._middleLeft.setLatLng(this._getMiddleLatLng(marker._prev, marker)); |
|
} |
|
if (marker._middleRight) { |
|
marker._middleRight.setLatLng(this._getMiddleLatLng(marker, marker._next)); |
|
} |
|
|
|
this._poly.redraw(); |
|
}, |
|
|
|
_onMarkerClick: function (e) { |
|
// we want to remove the marker on click, but if latlng count < 3, polyline would be invalid |
|
if (this._poly._latlngs.length < 3) { return; } |
|
|
|
var marker = e.target, |
|
i = marker._index; |
|
|
|
// remove the marker |
|
this._markerGroup.removeLayer(marker); |
|
this._markers.splice(i, 1); |
|
this._poly.spliceLatLngs(i, 1); |
|
this._updateIndexes(i, -1); |
|
|
|
// update prev/next links of adjacent markers |
|
this._updatePrevNext(marker._prev, marker._next); |
|
|
|
// remove ghost markers near the removed marker |
|
if (marker._middleLeft) { |
|
this._markerGroup.removeLayer(marker._middleLeft); |
|
} |
|
if (marker._middleRight) { |
|
this._markerGroup.removeLayer(marker._middleRight); |
|
} |
|
|
|
// create a ghost marker in place of the removed one |
|
if (marker._prev && marker._next) { |
|
this._createMiddleMarker(marker._prev, marker._next); |
|
|
|
} else if (!marker._prev) { |
|
marker._next._middleLeft = null; |
|
|
|
} else if (!marker._next) { |
|
marker._prev._middleRight = null; |
|
} |
|
|
|
this._poly.fire('edit'); |
|
}, |
|
|
|
_updateIndexes: function (index, delta) { |
|
this._markerGroup.eachLayer(function (marker) { |
|
if (marker._index > index) { |
|
marker._index += delta; |
|
} |
|
}); |
|
}, |
|
|
|
_createMiddleMarker: function (marker1, marker2) { |
|
var latlng = this._getMiddleLatLng(marker1, marker2), |
|
marker = this._createMarker(latlng), |
|
onClick, |
|
onDragStart, |
|
onDragEnd; |
|
|
|
marker.setOpacity(0.6); |
|
|
|
marker1._middleRight = marker2._middleLeft = marker; |
|
|
|
onDragStart = function () { |
|
var i = marker2._index; |
|
|
|
marker._index = i; |
|
|
|
marker |
|
.off('click', onClick) |
|
.on('click', this._onMarkerClick, this); |
|
|
|
latlng.lat = marker.getLatLng().lat; |
|
latlng.lng = marker.getLatLng().lng; |
|
this._poly.spliceLatLngs(i, 0, latlng); |
|
this._markers.splice(i, 0, marker); |
|
|
|
marker.setOpacity(1); |
|
|
|
this._updateIndexes(i, 1); |
|
marker2._index++; |
|
this._updatePrevNext(marker1, marker); |
|
this._updatePrevNext(marker, marker2); |
|
}; |
|
|
|
onDragEnd = function () { |
|
marker.off('dragstart', onDragStart, this); |
|
marker.off('dragend', onDragEnd, this); |
|
|
|
this._createMiddleMarker(marker1, marker); |
|
this._createMiddleMarker(marker, marker2); |
|
}; |
|
|
|
onClick = function () { |
|
onDragStart.call(this); |
|
onDragEnd.call(this); |
|
this._poly.fire('edit'); |
|
}; |
|
|
|
marker |
|
.on('click', onClick, this) |
|
.on('dragstart', onDragStart, this) |
|
.on('dragend', onDragEnd, this); |
|
|
|
this._markerGroup.addLayer(marker); |
|
}, |
|
|
|
_updatePrevNext: function (marker1, marker2) { |
|
if (marker1) { |
|
marker1._next = marker2; |
|
} |
|
if (marker2) { |
|
marker2._prev = marker1; |
|
} |
|
}, |
|
|
|
_getMiddleLatLng: function (marker1, marker2) { |
|
var map = this._poly._map, |
|
p1 = map.latLngToLayerPoint(marker1.getLatLng()), |
|
p2 = map.latLngToLayerPoint(marker2.getLatLng()); |
|
|
|
return map.layerPointToLatLng(p1._add(p2)._divideBy(2)); |
|
} |
|
}); |
|
|
|
L.Polyline.addInitHook(function () { |
|
|
|
if (L.Handler.PolyEdit) { |
|
this.editing = new L.Handler.PolyEdit(this); |
|
|
|
if (this.options.editable) { |
|
this.editing.enable(); |
|
} |
|
} |
|
|
|
this.on('add', function () { |
|
if (this.editing && this.editing.enabled()) { |
|
this.editing.addHooks(); |
|
} |
|
}); |
|
|
|
this.on('remove', function () { |
|
if (this.editing && this.editing.enabled()) { |
|
this.editing.removeHooks(); |
|
} |
|
}); |
|
}); |
|
|
|
|
|
/* |
|
* L.Control is a base class for implementing map controls. Handles positioning. |
|
* All other controls extend from this class. |
|
*/ |
|
|
|
L.Control = L.Class.extend({ |
|
options: { |
|
position: 'topright' |
|
}, |
|
|
|
initialize: function (options) { |
|
L.setOptions(this, options); |
|
}, |
|
|
|
getPosition: function () { |
|
return this.options.position; |
|
}, |
|
|
|
setPosition: function (position) { |
|
var map = this._map; |
|
|
|
if (map) { |
|
map.removeControl(this); |
|
} |
|
|
|
this.options.position = position; |
|
|
|
if (map) { |
|
map.addControl(this); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
addTo: function (map) { |
|
this._map = map; |
|
|
|
var container = this._container = this.onAdd(map), |
|
pos = this.getPosition(), |
|
corner = map._controlCorners[pos]; |
|
|
|
L.DomUtil.addClass(container, 'leaflet-control'); |
|
|
|
if (pos.indexOf('bottom') !== -1) { |
|
corner.insertBefore(container, corner.firstChild); |
|
} else { |
|
corner.appendChild(container); |
|
} |
|
|
|
return this; |
|
}, |
|
|
|
removeFrom: function (map) { |
|
var pos = this.getPosition(), |
|
corner = map._controlCorners[pos]; |
|
|
|
corner.removeChild(this._container); |
|
this._map = null; |
|
|
|
if (this.onRemove) { |
|
this.onRemove(map); |
|
} |
|
|
|
return this; |
|
} |
|
}); |
|
|
|
L.control = function (options) { |
|
return new L.Control(options); |
|
}; |
|
|
|
|
|
/* |
|
* Adds control-related methods to L.Map. |
|
*/ |
|
|
|
L.Map.include({ |
|
addControl: function (control) { |
|
control.addTo(this); |
|
return this; |
|
}, |
|
|
|
removeControl: function (control) { |
|
control.removeFrom(this); |
|
return this; |
|
}, |
|
|
|
_initControlPos: function () { |
|
var corners = this._controlCorners = {}, |
|
l = 'leaflet-', |
|
container = this._controlContainer = |
|
L.DomUtil.create('div', l + 'control-container', this._container); |
|
|
|
function createCorner(vSide, hSide) { |
|
var className = l + vSide + ' ' + l + hSide; |
|
|
|
corners[vSide + hSide] = L.DomUtil.create('div', className, container); |
|
} |
|
|
|
createCorner('top', 'left'); |
|
createCorner('top', 'right'); |
|
createCorner('bottom', 'left'); |
|
createCorner('bottom', 'right'); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.Control.Zoom is used for the default zoom buttons on the map. |
|
*/ |
|
|
|
L.Control.Zoom = L.Control.extend({ |
|
options: { |
|
position: 'topleft' |
|
}, |
|
|
|
onAdd: function (map) { |
|
var zoomName = 'leaflet-control-zoom', |
|
barName = 'leaflet-bar', |
|
partName = barName + '-part', |
|
container = L.DomUtil.create('div', zoomName + ' ' + barName); |
|
|
|
this._map = map; |
|
|
|
this._zoomInButton = this._createButton('+', 'Zoom in', |
|
zoomName + '-in ' + |
|
partName + ' ' + |
|
partName + '-top', |
|
container, this._zoomIn, this); |
|
|
|
this._zoomOutButton = this._createButton('-', 'Zoom out', |
|
zoomName + '-out ' + |
|
partName + ' ' + |
|
partName + '-bottom', |
|
container, this._zoomOut, this); |
|
|
|
map.on('zoomend', this._updateDisabled, this); |
|
|
|
return container; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map.off('zoomend', this._updateDisabled, this); |
|
}, |
|
|
|
_zoomIn: function (e) { |
|
this._map.zoomIn(e.shiftKey ? 3 : 1); |
|
}, |
|
|
|
_zoomOut: function (e) { |
|
this._map.zoomOut(e.shiftKey ? 3 : 1); |
|
}, |
|
|
|
_createButton: function (html, title, className, container, fn, context) { |
|
var link = L.DomUtil.create('a', className, container); |
|
link.innerHTML = html; |
|
link.href = '#'; |
|
link.title = title; |
|
|
|
var stop = L.DomEvent.stopPropagation; |
|
|
|
L.DomEvent |
|
.on(link, 'click', stop) |
|
.on(link, 'mousedown', stop) |
|
.on(link, 'dblclick', stop) |
|
.on(link, 'click', L.DomEvent.preventDefault) |
|
.on(link, 'click', fn, context); |
|
|
|
return link; |
|
}, |
|
|
|
_updateDisabled: function () { |
|
var map = this._map, |
|
className = 'leaflet-control-zoom-disabled'; |
|
|
|
L.DomUtil.removeClass(this._zoomInButton, className); |
|
L.DomUtil.removeClass(this._zoomOutButton, className); |
|
|
|
if (map._zoom === map.getMinZoom()) { |
|
L.DomUtil.addClass(this._zoomOutButton, className); |
|
} |
|
if (map._zoom === map.getMaxZoom()) { |
|
L.DomUtil.addClass(this._zoomInButton, className); |
|
} |
|
} |
|
}); |
|
|
|
L.Map.mergeOptions({ |
|
zoomControl: true |
|
}); |
|
|
|
L.Map.addInitHook(function () { |
|
if (this.options.zoomControl) { |
|
this.zoomControl = new L.Control.Zoom(); |
|
this.addControl(this.zoomControl); |
|
} |
|
}); |
|
|
|
L.control.zoom = function (options) { |
|
return new L.Control.Zoom(options); |
|
}; |
|
|
|
|
|
|
|
/* |
|
* L.Control.Attribution is used for displaying attribution on the map (added by default). |
|
*/ |
|
|
|
L.Control.Attribution = L.Control.extend({ |
|
options: { |
|
position: 'bottomright', |
|
prefix: 'Powered by <a href="http://leafletjs.com">Leaflet</a>' |
|
}, |
|
|
|
initialize: function (options) { |
|
L.setOptions(this, options); |
|
|
|
this._attributions = {}; |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._container = L.DomUtil.create('div', 'leaflet-control-attribution'); |
|
L.DomEvent.disableClickPropagation(this._container); |
|
|
|
map |
|
.on('layeradd', this._onLayerAdd, this) |
|
.on('layerremove', this._onLayerRemove, this); |
|
|
|
this._update(); |
|
|
|
return this._container; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map |
|
.off('layeradd', this._onLayerAdd) |
|
.off('layerremove', this._onLayerRemove); |
|
|
|
}, |
|
|
|
setPrefix: function (prefix) { |
|
this.options.prefix = prefix; |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
addAttribution: function (text) { |
|
if (!text) { return; } |
|
|
|
if (!this._attributions[text]) { |
|
this._attributions[text] = 0; |
|
} |
|
this._attributions[text]++; |
|
|
|
this._update(); |
|
|
|
return this; |
|
}, |
|
|
|
removeAttribution: function (text) { |
|
if (!text) { return; } |
|
|
|
this._attributions[text]--; |
|
this._update(); |
|
|
|
return this; |
|
}, |
|
|
|
_update: function () { |
|
if (!this._map) { return; } |
|
|
|
var attribs = []; |
|
|
|
for (var i in this._attributions) { |
|
if (this._attributions.hasOwnProperty(i) && this._attributions[i]) { |
|
attribs.push(i); |
|
} |
|
} |
|
|
|
var prefixAndAttribs = []; |
|
|
|
if (this.options.prefix) { |
|
prefixAndAttribs.push(this.options.prefix); |
|
} |
|
if (attribs.length) { |
|
prefixAndAttribs.push(attribs.join(', ')); |
|
} |
|
|
|
this._container.innerHTML = prefixAndAttribs.join(' — '); |
|
}, |
|
|
|
_onLayerAdd: function (e) { |
|
if (e.layer.getAttribution) { |
|
this.addAttribution(e.layer.getAttribution()); |
|
} |
|
}, |
|
|
|
_onLayerRemove: function (e) { |
|
if (e.layer.getAttribution) { |
|
this.removeAttribution(e.layer.getAttribution()); |
|
} |
|
} |
|
}); |
|
|
|
L.Map.mergeOptions({ |
|
attributionControl: true |
|
}); |
|
|
|
L.Map.addInitHook(function () { |
|
if (this.options.attributionControl) { |
|
this.attributionControl = (new L.Control.Attribution()).addTo(this); |
|
} |
|
}); |
|
|
|
L.control.attribution = function (options) { |
|
return new L.Control.Attribution(options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Control.Scale is used for displaying metric/imperial scale on the map. |
|
*/ |
|
|
|
L.Control.Scale = L.Control.extend({ |
|
options: { |
|
position: 'bottomleft', |
|
maxWidth: 100, |
|
metric: true, |
|
imperial: true, |
|
updateWhenIdle: false |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._map = map; |
|
|
|
var className = 'leaflet-control-scale', |
|
container = L.DomUtil.create('div', className), |
|
options = this.options; |
|
|
|
this._addScales(options, className, container); |
|
|
|
map.on(options.updateWhenIdle ? 'moveend' : 'move', this._update, this); |
|
map.whenReady(this._update, this); |
|
|
|
return container; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map.off(this.options.updateWhenIdle ? 'moveend' : 'move', this._update, this); |
|
}, |
|
|
|
_addScales: function (options, className, container) { |
|
if (options.metric) { |
|
this._mScale = L.DomUtil.create('div', className + '-line', container); |
|
} |
|
if (options.imperial) { |
|
this._iScale = L.DomUtil.create('div', className + '-line', container); |
|
} |
|
}, |
|
|
|
_update: function () { |
|
var bounds = this._map.getBounds(), |
|
centerLat = bounds.getCenter().lat, |
|
halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180), |
|
dist = halfWorldMeters * (bounds.getNorthEast().lng - bounds.getSouthWest().lng) / 180, |
|
|
|
size = this._map.getSize(), |
|
options = this.options, |
|
maxMeters = 0; |
|
|
|
if (size.x > 0) { |
|
maxMeters = dist * (options.maxWidth / size.x); |
|
} |
|
|
|
this._updateScales(options, maxMeters); |
|
}, |
|
|
|
_updateScales: function (options, maxMeters) { |
|
if (options.metric && maxMeters) { |
|
this._updateMetric(maxMeters); |
|
} |
|
|
|
if (options.imperial && maxMeters) { |
|
this._updateImperial(maxMeters); |
|
} |
|
}, |
|
|
|
_updateMetric: function (maxMeters) { |
|
var meters = this._getRoundNum(maxMeters); |
|
|
|
this._mScale.style.width = this._getScaleWidth(meters / maxMeters) + 'px'; |
|
this._mScale.innerHTML = meters < 1000 ? meters + ' m' : (meters / 1000) + ' km'; |
|
}, |
|
|
|
_updateImperial: function (maxMeters) { |
|
var maxFeet = maxMeters * 3.2808399, |
|
scale = this._iScale, |
|
maxMiles, miles, feet; |
|
|
|
if (maxFeet > 5280) { |
|
maxMiles = maxFeet / 5280; |
|
miles = this._getRoundNum(maxMiles); |
|
|
|
scale.style.width = this._getScaleWidth(miles / maxMiles) + 'px'; |
|
scale.innerHTML = miles + ' mi'; |
|
|
|
} else { |
|
feet = this._getRoundNum(maxFeet); |
|
|
|
scale.style.width = this._getScaleWidth(feet / maxFeet) + 'px'; |
|
scale.innerHTML = feet + ' ft'; |
|
} |
|
}, |
|
|
|
_getScaleWidth: function (ratio) { |
|
return Math.round(this.options.maxWidth * ratio) - 10; |
|
}, |
|
|
|
_getRoundNum: function (num) { |
|
var pow10 = Math.pow(10, (Math.floor(num) + '').length - 1), |
|
d = num / pow10; |
|
|
|
d = d >= 10 ? 10 : d >= 5 ? 5 : d >= 3 ? 3 : d >= 2 ? 2 : 1; |
|
|
|
return pow10 * d; |
|
} |
|
}); |
|
|
|
L.control.scale = function (options) { |
|
return new L.Control.Scale(options); |
|
}; |
|
|
|
|
|
/* |
|
* L.Control.Layers is a control to allow users to switch between different layers on the map. |
|
*/ |
|
|
|
L.Control.Layers = L.Control.extend({ |
|
options: { |
|
collapsed: true, |
|
position: 'topright', |
|
autoZIndex: true |
|
}, |
|
|
|
initialize: function (baseLayers, overlays, options) { |
|
L.setOptions(this, options); |
|
|
|
this._layers = {}; |
|
this._lastZIndex = 0; |
|
this._handlingClick = false; |
|
|
|
for (var i in baseLayers) { |
|
if (baseLayers.hasOwnProperty(i)) { |
|
this._addLayer(baseLayers[i], i); |
|
} |
|
} |
|
|
|
for (i in overlays) { |
|
if (overlays.hasOwnProperty(i)) { |
|
this._addLayer(overlays[i], i, true); |
|
} |
|
} |
|
}, |
|
|
|
onAdd: function (map) { |
|
this._initLayout(); |
|
this._update(); |
|
|
|
map |
|
.on('layeradd', this._onLayerChange, this) |
|
.on('layerremove', this._onLayerChange, this); |
|
|
|
return this._container; |
|
}, |
|
|
|
onRemove: function (map) { |
|
map |
|
.off('layeradd', this._onLayerChange) |
|
.off('layerremove', this._onLayerChange); |
|
}, |
|
|
|
addBaseLayer: function (layer, name) { |
|
this._addLayer(layer, name); |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
addOverlay: function (layer, name) { |
|
this._addLayer(layer, name, true); |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
removeLayer: function (layer) { |
|
var id = L.stamp(layer); |
|
delete this._layers[id]; |
|
this._update(); |
|
return this; |
|
}, |
|
|
|
_initLayout: function () { |
|
var className = 'leaflet-control-layers', |
|
container = this._container = L.DomUtil.create('div', className); |
|
|
|
if (!L.Browser.touch) { |
|
L.DomEvent.disableClickPropagation(container); |
|
L.DomEvent.on(container, 'mousewheel', L.DomEvent.stopPropagation); |
|
} else { |
|
L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation); |
|
} |
|
|
|
var form = this._form = L.DomUtil.create('form', className + '-list'); |
|
|
|
if (this.options.collapsed) { |
|
L.DomEvent |
|
.on(container, 'mouseover', this._expand, this) |
|
.on(container, 'mouseout', this._collapse, this); |
|
|
|
var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container); |
|
link.href = '#'; |
|
link.title = 'Layers'; |
|
|
|
if (L.Browser.touch) { |
|
L.DomEvent |
|
.on(link, 'click', L.DomEvent.stopPropagation) |
|
.on(link, 'click', L.DomEvent.preventDefault) |
|
.on(link, 'click', this._expand, this); |
|
} |
|
else { |
|
L.DomEvent.on(link, 'focus', this._expand, this); |
|
} |
|
|
|
this._map.on('movestart', this._collapse, this); |
|
// TODO keyboard accessibility |
|
} else { |
|
this._expand(); |
|
} |
|
|
|
this._baseLayersList = L.DomUtil.create('div', className + '-base', form); |
|
this._separator = L.DomUtil.create('div', className + '-separator', form); |
|
this._overlaysList = L.DomUtil.create('div', className + '-overlays', form); |
|
|
|
container.appendChild(form); |
|
}, |
|
|
|
_addLayer: function (layer, name, overlay) { |
|
var id = L.stamp(layer); |
|
|
|
this._layers[id] = { |
|
layer: layer, |
|
name: name, |
|
overlay: overlay |
|
}; |
|
|
|
if (this.options.autoZIndex && layer.setZIndex) { |
|
this._lastZIndex++; |
|
layer.setZIndex(this._lastZIndex); |
|
} |
|
}, |
|
|
|
_update: function () { |
|
if (!this._container) { |
|
return; |
|
} |
|
|
|
this._baseLayersList.innerHTML = ''; |
|
this._overlaysList.innerHTML = ''; |
|
|
|
var baseLayersPresent = false, |
|
overlaysPresent = false; |
|
|
|
for (var i in this._layers) { |
|
if (this._layers.hasOwnProperty(i)) { |
|
var obj = this._layers[i]; |
|
this._addItem(obj); |
|
overlaysPresent = overlaysPresent || obj.overlay; |
|
baseLayersPresent = baseLayersPresent || !obj.overlay; |
|
} |
|
} |
|
|
|
this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none'); |
|
}, |
|
|
|
_onLayerChange: function (e) { |
|
var id = L.stamp(e.layer); |
|
|
|
if (this._layers[id] && !this._handlingClick) { |
|
this._update(); |
|
} |
|
}, |
|
|
|
// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe) |
|
_createRadioElement: function (name, checked) { |
|
|
|
var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"'; |
|
if (checked) { |
|
radioHtml += ' checked="checked"'; |
|
} |
|
radioHtml += '/>'; |
|
|
|
var radioFragment = document.createElement('div'); |
|
radioFragment.innerHTML = radioHtml; |
|
|
|
return radioFragment.firstChild; |
|
}, |
|
|
|
_addItem: function (obj) { |
|
var label = document.createElement('label'), |
|
input, |
|
checked = this._map.hasLayer(obj.layer); |
|
|
|
if (obj.overlay) { |
|
input = document.createElement('input'); |
|
input.type = 'checkbox'; |
|
input.className = 'leaflet-control-layers-selector'; |
|
input.defaultChecked = checked; |
|
} else { |
|
input = this._createRadioElement('leaflet-base-layers', checked); |
|
} |
|
|
|
input.layerId = L.stamp(obj.layer); |
|
|
|
L.DomEvent.on(input, 'click', this._onInputClick, this); |
|
|
|
var name = document.createElement('span'); |
|
name.innerHTML = ' ' + obj.name; |
|
|
|
label.appendChild(input); |
|
label.appendChild(name); |
|
|
|
var container = obj.overlay ? this._overlaysList : this._baseLayersList; |
|
container.appendChild(label); |
|
|
|
return label; |
|
}, |
|
|
|
_onInputClick: function () { |
|
var i, input, obj, |
|
inputs = this._form.getElementsByTagName('input'), |
|
inputsLen = inputs.length, |
|
baseLayer; |
|
|
|
this._handlingClick = true; |
|
|
|
for (i = 0; i < inputsLen; i++) { |
|
input = inputs[i]; |
|
obj = this._layers[input.layerId]; |
|
|
|
if (input.checked && !this._map.hasLayer(obj.layer)) { |
|
this._map.addLayer(obj.layer); |
|
if (!obj.overlay) { |
|
baseLayer = obj.layer; |
|
} |
|
} else if (!input.checked && this._map.hasLayer(obj.layer)) { |
|
this._map.removeLayer(obj.layer); |
|
} |
|
} |
|
|
|
if (baseLayer) { |
|
this._map.setZoom(this._map.getZoom()); |
|
this._map.fire('baselayerchange', {layer: baseLayer}); |
|
} |
|
|
|
this._handlingClick = false; |
|
}, |
|
|
|
_expand: function () { |
|
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded'); |
|
}, |
|
|
|
_collapse: function () { |
|
this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', ''); |
|
} |
|
}); |
|
|
|
L.control.layers = function (baseLayers, overlays, options) { |
|
return new L.Control.Layers(baseLayers, overlays, options); |
|
}; |
|
|
|
|
|
/* |
|
* L.PosAnimation is used by Leaflet internally for pan animations. |
|
*/ |
|
|
|
L.PosAnimation = L.Class.extend({ |
|
includes: L.Mixin.Events, |
|
|
|
run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number]) |
|
this.stop(); |
|
|
|
this._el = el; |
|
this._inProgress = true; |
|
|
|
this.fire('start'); |
|
|
|
el.style[L.DomUtil.TRANSITION] = 'all ' + (duration || 0.25) + |
|
's cubic-bezier(0,0,' + (easeLinearity || 0.5) + ',1)'; |
|
|
|
L.DomEvent.on(el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this); |
|
L.DomUtil.setPosition(el, newPos); |
|
|
|
// toggle reflow, Chrome flickers for some reason if you don't do this |
|
L.Util.falseFn(el.offsetWidth); |
|
|
|
// there's no native way to track value updates of transitioned properties, so we imitate this |
|
this._stepTimer = setInterval(L.bind(this.fire, this, 'step'), 50); |
|
}, |
|
|
|
stop: function () { |
|
if (!this._inProgress) { return; } |
|
|
|
// if we just removed the transition property, the element would jump to its final position, |
|
// so we need to make it stay at the current position |
|
|
|
L.DomUtil.setPosition(this._el, this._getPos()); |
|
this._onTransitionEnd(); |
|
L.Util.falseFn(this._el.offsetWidth); // force reflow in case we are about to start a new animation |
|
}, |
|
|
|
// you can't easily get intermediate values of properties animated with CSS3 Transitions, |
|
// we need to parse computed style (in case of transform it returns matrix string) |
|
|
|
_transformRe: /(-?[\d\.]+), (-?[\d\.]+)\)/, |
|
|
|
_getPos: function () { |
|
var left, top, matches, |
|
el = this._el, |
|
style = window.getComputedStyle(el); |
|
|
|
if (L.Browser.any3d) { |
|
matches = style[L.DomUtil.TRANSFORM].match(this._transformRe); |
|
left = parseFloat(matches[1]); |
|
top = parseFloat(matches[2]); |
|
} else { |
|
left = parseFloat(style.left); |
|
top = parseFloat(style.top); |
|
} |
|
|
|
return new L.Point(left, top, true); |
|
}, |
|
|
|
_onTransitionEnd: function () { |
|
L.DomEvent.off(this._el, L.DomUtil.TRANSITION_END, this._onTransitionEnd, this); |
|
|
|
if (!this._inProgress) { return; } |
|
this._inProgress = false; |
|
|
|
this._el.style[L.DomUtil.TRANSITION] = ''; |
|
|
|
clearInterval(this._stepTimer); |
|
|
|
this.fire('step').fire('end'); |
|
} |
|
|
|
}); |
|
|
|
|
|
/* |
|
* Extends L.Map to handle panning animations. |
|
*/ |
|
|
|
L.Map.include({ |
|
|
|
setView: function (center, zoom, forceReset) { |
|
zoom = this._limitZoom(zoom); |
|
|
|
var zoomChanged = (this._zoom !== zoom); |
|
|
|
if (this._loaded && !forceReset && this._layers) { |
|
|
|
if (this._panAnim) { |
|
this._panAnim.stop(); |
|
} |
|
|
|
var done = (zoomChanged ? |
|
this._zoomToIfClose && this._zoomToIfClose(center, zoom) : |
|
this._panByIfClose(center)); |
|
|
|
// exit if animated pan or zoom started |
|
if (done) { |
|
clearTimeout(this._sizeTimer); |
|
return this; |
|
} |
|
} |
|
|
|
// reset the map view |
|
this._resetView(center, zoom); |
|
|
|
return this; |
|
}, |
|
|
|
panBy: function (offset, duration, easeLinearity) { |
|
offset = L.point(offset); |
|
|
|
if (!(offset.x || offset.y)) { |
|
return this; |
|
} |
|
|
|
if (!this._panAnim) { |
|
this._panAnim = new L.PosAnimation(); |
|
|
|
this._panAnim.on({ |
|
'step': this._onPanTransitionStep, |
|
'end': this._onPanTransitionEnd |
|
}, this); |
|
} |
|
|
|
this.fire('movestart'); |
|
|
|
L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim'); |
|
|
|
var newPos = L.DomUtil.getPosition(this._mapPane).subtract(offset)._round(); |
|
this._panAnim.run(this._mapPane, newPos, duration || 0.25, easeLinearity); |
|
|
|
return this; |
|
}, |
|
|
|
_onPanTransitionStep: function () { |
|
this.fire('move'); |
|
}, |
|
|
|
_onPanTransitionEnd: function () { |
|
L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim'); |
|
this.fire('moveend'); |
|
}, |
|
|
|
_panByIfClose: function (center) { |
|
// difference between the new and current centers in pixels |
|
var offset = this._getCenterOffset(center)._floor(); |
|
|
|
if (this._offsetIsWithinView(offset)) { |
|
this.panBy(offset); |
|
return true; |
|
} |
|
return false; |
|
}, |
|
|
|
_offsetIsWithinView: function (offset, multiplyFactor) { |
|
var m = multiplyFactor || 1, |
|
size = this.getSize(); |
|
|
|
return (Math.abs(offset.x) <= size.x * m) && |
|
(Math.abs(offset.y) <= size.y * m); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* L.PosAnimation fallback implementation that powers Leaflet pan animations |
|
* in browsers that don't support CSS3 Transitions. |
|
*/ |
|
|
|
L.PosAnimation = L.DomUtil.TRANSITION ? L.PosAnimation : L.PosAnimation.extend({ |
|
|
|
run: function (el, newPos, duration, easeLinearity) { // (HTMLElement, Point[, Number, Number]) |
|
this.stop(); |
|
|
|
this._el = el; |
|
this._inProgress = true; |
|
this._duration = duration || 0.25; |
|
this._easeOutPower = 1 / Math.max(easeLinearity || 0.5, 0.2); |
|
|
|
this._startPos = L.DomUtil.getPosition(el); |
|
this._offset = newPos.subtract(this._startPos); |
|
this._startTime = +new Date(); |
|
|
|
this.fire('start'); |
|
|
|
this._animate(); |
|
}, |
|
|
|
stop: function () { |
|
if (!this._inProgress) { return; } |
|
|
|
this._step(); |
|
this._complete(); |
|
}, |
|
|
|
_animate: function () { |
|
// animation loop |
|
this._animId = L.Util.requestAnimFrame(this._animate, this); |
|
this._step(); |
|
}, |
|
|
|
_step: function () { |
|
var elapsed = (+new Date()) - this._startTime, |
|
duration = this._duration * 1000; |
|
|
|
if (elapsed < duration) { |
|
this._runFrame(this._easeOut(elapsed / duration)); |
|
} else { |
|
this._runFrame(1); |
|
this._complete(); |
|
} |
|
}, |
|
|
|
_runFrame: function (progress) { |
|
var pos = this._startPos.add(this._offset.multiplyBy(progress)); |
|
L.DomUtil.setPosition(this._el, pos); |
|
|
|
this.fire('step'); |
|
}, |
|
|
|
_complete: function () { |
|
L.Util.cancelAnimFrame(this._animId); |
|
|
|
this._inProgress = false; |
|
this.fire('end'); |
|
}, |
|
|
|
_easeOut: function (t) { |
|
return 1 - Math.pow(1 - t, this._easeOutPower); |
|
} |
|
}); |
|
|
|
|
|
/* |
|
* Extends L.Map to handle zoom animations. |
|
*/ |
|
|
|
L.Map.mergeOptions({ |
|
zoomAnimation: L.DomUtil.TRANSITION && !L.Browser.android23 && !L.Browser.mobileOpera |
|
}); |
|
|
|
if (L.DomUtil.TRANSITION) { |
|
L.Map.addInitHook(function () { |
|
L.DomEvent.on(this._mapPane, L.DomUtil.TRANSITION_END, this._catchTransitionEnd, this); |
|
}); |
|
} |
|
|
|
L.Map.include(!L.DomUtil.TRANSITION ? {} : { |
|
|
|
_zoomToIfClose: function (center, zoom) { |
|
|
|
if (this._animatingZoom) { return true; } |
|
|
|
if (!this.options.zoomAnimation) { return false; } |
|
|
|
var scale = this.getZoomScale(zoom), |
|
offset = this._getCenterOffset(center)._divideBy(1 - 1 / scale); |
|
|
|
// if offset does not exceed half of the view |
|
if (!this._offsetIsWithinView(offset, 1)) { return false; } |
|
|
|
L.DomUtil.addClass(this._mapPane, 'leaflet-zoom-anim'); |
|
|
|
this |
|
.fire('movestart') |
|
.fire('zoomstart'); |
|
|
|
this.fire('zoomanim', { |
|
center: center, |
|
zoom: zoom |
|
}); |
|
|
|
var origin = this._getCenterLayerPoint().add(offset); |
|
|
|
this._prepareTileBg(); |
|
this._runAnimation(center, zoom, scale, origin); |
|
|
|
return true; |
|
}, |
|
|
|
_catchTransitionEnd: function () { |
|
if (this._animatingZoom) { |
|
this._onZoomTransitionEnd(); |
|
} |
|
}, |
|
|
|
_runAnimation: function (center, zoom, scale, origin, backwardsTransform) { |
|
this._animateToCenter = center; |
|
this._animateToZoom = zoom; |
|
this._animatingZoom = true; |
|
|
|
if (L.Draggable) { |
|
L.Draggable._disabled = true; |
|
} |
|
|
|
var transform = L.DomUtil.TRANSFORM, |
|
tileBg = this._tileBg; |
|
|
|
clearTimeout(this._clearTileBgTimer); |
|
|
|
L.Util.falseFn(tileBg.offsetWidth); //hack to make sure transform is updated before running animation |
|
|
|
var scaleStr = L.DomUtil.getScaleString(scale, origin), |
|
oldTransform = tileBg.style[transform]; |
|
|
|
tileBg.style[transform] = backwardsTransform ? |
|
oldTransform + ' ' + scaleStr : |
|
scaleStr + ' ' + oldTransform; |
|
}, |
|
|
|
_prepareTileBg: function () { |
|
var tilePane = this._tilePane, |
|
tileBg = this._tileBg; |
|
|
|
// If foreground layer doesn't have many tiles but bg layer does, keep the existing bg layer and just zoom it some more |
|
if (tileBg && this._getLoadedTilesPercentage(tileBg) > 0.5 && |
|
this._getLoadedTilesPercentage(tilePane) < 0.5) { |
|
|
|
tilePane.style.visibility = 'hidden'; |
|
tilePane.empty = true; |
|
this._stopLoadingImages(tilePane); |
|
return; |
|
} |
|
|
|
if (!tileBg) { |
|
tileBg = this._tileBg = this._createPane('leaflet-tile-pane', this._mapPane); |
|
tileBg.style.zIndex = 1; |
|
} |
|
|
|
// prepare the background pane to become the main tile pane |
|
tileBg.style[L.DomUtil.TRANSFORM] = ''; |
|
tileBg.style.visibility = 'hidden'; |
|
|
|
// tells tile layers to reinitialize their containers |
|
tileBg.empty = true; //new FG |
|
tilePane.empty = false; //new BG |
|
|
|
//Switch out the current layer to be the new bg layer (And vice-versa) |
|
this._tilePane = this._panes.tilePane = tileBg; |
|
var newTileBg = this._tileBg = tilePane; |
|
|
|
L.DomUtil.addClass(newTileBg, 'leaflet-zoom-animated'); |
|
|
|
this._stopLoadingImages(newTileBg); |
|
}, |
|
|
|
_getLoadedTilesPercentage: function (container) { |
|
var tiles = container.getElementsByTagName('img'), |
|
i, len, count = 0; |
|
|
|
for (i = 0, len = tiles.length; i < len; i++) { |
|
if (tiles[i].complete) { |
|
count++; |
|
} |
|
} |
|
return count / len; |
|
}, |
|
|
|
// stops loading all tiles in the background layer |
|
_stopLoadingImages: function (container) { |
|
var tiles = Array.prototype.slice.call(container.getElementsByTagName('img')), |
|
i, len, tile; |
|
|
|
for (i = 0, len = tiles.length; i < len; i++) { |
|
tile = tiles[i]; |
|
|
|
if (!tile.complete) { |
|
tile.onload = L.Util.falseFn; |
|
tile.onerror = L.Util.falseFn; |
|
tile.src = L.Util.emptyImageUrl; |
|
|
|
tile.parentNode.removeChild(tile); |
|
} |
|
} |
|
}, |
|
|
|
_onZoomTransitionEnd: function () { |
|
this._restoreTileFront(); |
|
|
|
L.DomUtil.removeClass(this._mapPane, 'leaflet-zoom-anim'); |
|
L.Util.falseFn(this._tileBg.offsetWidth); // force reflow |
|
this._animatingZoom = false; |
|
this._resetView(this._animateToCenter, this._animateToZoom, true, true); |
|
|
|
if (L.Draggable) { |
|
L.Draggable._disabled = 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 using browser geolocation features. |
|
*/ |
|
|
|
L.Map.include({ |
|
_defaultLocateOptions: { |
|
watch: false, |
|
setView: false, |
|
maxZoom: Infinity, |
|
timeout: 10000, |
|
maximumAge: 0, |
|
enableHighAccuracy: false |
|
}, |
|
|
|
locate: function (/*Object*/ options) { |
|
|
|
options = this._locationOptions = L.extend(this._defaultLocateOptions, options); |
|
|
|
if (!navigator.geolocation) { |
|
this._handleGeolocationError({ |
|
code: 0, |
|
message: "Geolocation not supported." |
|
}); |
|
return this; |
|
} |
|
|
|
var onResponse = L.bind(this._handleGeolocationResponse, this), |
|
onError = L.bind(this._handleGeolocationError, this); |
|
|
|
if (options.watch) { |
|
this._locationWatchId = |
|
navigator.geolocation.watchPosition(onResponse, onError, options); |
|
} else { |
|
navigator.geolocation.getCurrentPosition(onResponse, onError, options); |
|
} |
|
return this; |
|
}, |
|
|
|
stopLocate: function () { |
|
if (navigator.geolocation) { |
|
navigator.geolocation.clearWatch(this._locationWatchId); |
|
} |
|
return this; |
|
}, |
|
|
|
_handleGeolocationError: function (error) { |
|
var c = error.code, |
|
message = error.message || |
|
(c === 1 ? "permission denied" : |
|
(c === 2 ? "position unavailable" : "timeout")); |
|
|
|
if (this._locationOptions.setView && !this._loaded) { |
|
this.fitWorld(); |
|
} |
|
|
|
this.fire('locationerror', { |
|
code: c, |
|
message: "Geolocation error: " + message + "." |
|
}); |
|
}, |
|
|
|
_handleGeolocationResponse: function (pos) { |
|
var latAccuracy = 180 * pos.coords.accuracy / 4e7, |
|
lngAccuracy = latAccuracy * 2, |
|
|
|
lat = pos.coords.latitude, |
|
lng = pos.coords.longitude, |
|
latlng = new L.LatLng(lat, lng), |
|
|
|
sw = new L.LatLng(lat - latAccuracy, lng - lngAccuracy), |
|
ne = new L.LatLng(lat + latAccuracy, lng + lngAccuracy), |
|
bounds = new L.LatLngBounds(sw, ne), |
|
|
|
options = this._locationOptions; |
|
|
|
if (options.setView) { |
|
var zoom = Math.min(this.getBoundsZoom(bounds), options.maxZoom); |
|
this.setView(latlng, zoom); |
|
} |
|
|
|
this.fire('locationfound', { |
|
latlng: latlng, |
|
bounds: bounds, |
|
accuracy: pos.coords.accuracy |
|
}); |
|
} |
|
}); |
|
|
|
|
|
}(this, document)); |