/* 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 = '0.6-dev'; /* * 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(encodeURIComponent(i) + '=' + encodeURIComponent(obj[i])); } } return ((!existingUrl || existingUrl.indexOf('?') === -1) ? '?' : '&') + params.join('&'); }, template: function (str, data) { return str.replace(/\{ *([\w_]+) *\}/g, function (str, key) { var value = data[key]; if (!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, evt, contextId, objKey, objLenKey, eventsObj; // 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 can be a string of space-separated words types = L.Util.splitWords(types); for (i = 0, len = types.length; i < len; i++) { evt = { action: fn, context: context || this }; contextId = context && context._leaflet_id; if (contextId) { // store listeners of a particular context in a separate hash (if it has an id) // gives a major performance boost when removing thousands of map layers objKey = types[i] + '_idx', objLenKey = objKey + '_len', eventsObj = events[objKey] = events[objKey] || {}; if (eventsObj[contextId]) { eventsObj[contextId].push(evt); } else { eventsObj[contextId] = [evt]; events[objLenKey] = (events[objLenKey] || 0) + 1; } } else { events[types[i]] = events[types[i]] || []; events[types[i]].push(evt); } } return this; }, hasEventListeners: function (type) { // (String) -> Boolean return (key in this) && (((type in this[key]) && this[key][type].length > 0) || (this[key][type + '_idx_len'] > 0)); }, removeEventListener: function (types, fn, context) { // (String[, Function, Object]) or (Object[, Object]) var events = this[key], type, i, len, listeners, j, contextId, objKey, objLenKey; 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])) { // if the context has an id, use it to find the listeners contextId = context && context._leaflet_id; objKey = types[i] + '_idx'; if (contextId && events[objKey]) { listeners = events[objKey][contextId] || []; } else { 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); } } if (contextId && listeners.length === 0) { objLenKey = objKey + '_len'; delete events[objKey][contextId]; events[objLenKey] = (events[objLenKey] || 1) - 1; } } } return this; }, fireEvent: function (type, data) { // (String[, Object]) if (!this.hasEventListeners(type)) { return this; } var event = L.Util.extend({ type: type, target: this }, data); var listeners, i, len, eventsObj, contextId; if (this[key][type]) { listeners = this[key][type].slice(); for (i = 0, len = listeners.length; i < len; i++) { listeners[i].action.call(listeners[i].context || this, event); } } // fire event for the context-indexed listeners as well eventsObj = this[key][type + '_idx']; if (eventsObj) { for (contextId in eventsObj) { if (eventsObj.hasOwnProperty(contextId)) { listeners = eventsObj[contextId]; if (listeners) { for (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) { if (!layer) { return false; } 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]); } } return this; }, _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, path; for (i = 0, len = scripts.length; i < len; i++) { src = scripts[i].src; matches = src.match(leafletRe); if (matches) { path = src.split(leafletRe)[0]; return (path ? path + '/' : '') + 'images'; } } }()); /* * L.Marker is used to display clickable/draggable icons on the map. */ L.Marker = L.Class.extend({ includes: L.Mixin.Events, options: { icon: new L.Icon.Default(), title: '', 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; }, hasLayer: function (layer) { if (!layer) { return false; } var id = L.stamp(layer); return this._layers.hasOwnProperty(id); }, 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 = ''; var shape = div.firstChild; shape.style.behavior = 'url(#default#VML)'; return shape && (typeof shape.adj === 'object'); } catch (e) { return false; } }()); L.Path = L.Browser.svg || !L.Browser.vml ? L.Path : L.Path.extend({ statics: { VML: true, CLIP_PADDING: 0.02 }, _createElement: (function () { try { document.namespaces.add('lvml', 'urn:schemas-microsoft-com:vml'); return function (name) { return document.createElement(''); }; } catch (e) { return function (name) { return document.createElement( '<' + name + ' xmlns="urn:schemas-microsoft.com:vml" class="lvml">'); }; } }()), _initPath: function () { var container = this._container = this._createElement('shape'); L.DomUtil.addClass(container, 'leaflet-vml-shape'); if (this.options.clickable) { L.DomUtil.addClass(container, 'leaflet-clickable'); } container.coordsize = '1 1'; this._path = this._createElement('path'); container.appendChild(this._path); this._map._pathRoot.appendChild(container); }, _initStyle: function () { this._updateStyle(); }, _updateStyle: function () { var stroke = this._stroke, fill = this._fill, options = this.options, container = this._container; container.stroked = options.stroke; container.filled = options.fill; if (options.stroke) { if (!stroke) { stroke = this._stroke = this._createElement('stroke'); stroke.endcap = 'round'; container.appendChild(stroke); } stroke.weight = options.weight + 'px'; stroke.color = options.color; stroke.opacity = options.opacity; if (options.dashArray) { stroke.dashStyle = options.dashArray 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.Polyline is used to display polylines on a map. */ L.Polyline = L.Path.extend({ initialize: function (latlngs, options) { L.Path.prototype.initialize.call(this, options); this._latlngs = this._convertLatLngs(latlngs); }, options: { // how much to simplify the polyline on each zoom level // more = better performance and smoother look, less = more accurate smoothFactor: 1.0, noClip: false }, projectLatlngs: function () { this._originalPoints = []; for (var i = 0, len = this._latlngs.length; i < len; i++) { this._originalPoints[i] = this._map.latLngToLayerPoint(this._latlngs[i]); } }, getPathString: function () { for (var i = 0, len = this._parts.length, str = ''; i < len; i++) { str += this._getPathPartStr(this._parts[i]); } return str; }, getLatLngs: function () { return this._latlngs; }, setLatLngs: function (latlngs) { this._latlngs = this._convertLatLngs(latlngs); return this.redraw(); }, addLatLng: function (latlng) { this._latlngs.push(L.latLng(latlng)); return this.redraw(); }, spliceLatLngs: function () { // (Number index, Number howMany) var removed = [].splice.apply(this._latlngs, arguments); this._convertLatLngs(this._latlngs); 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); } // filter out last point if its equal to the first one latlngs = this._latlngs; if (latlngs[0].equals(latlngs[latlngs.length - 1])) { latlngs.pop(); } }, projectLatlngs: function () { L.Polyline.prototype.projectLatlngs.call(this); // project polygon holes points // TODO move this logic to Polyline to get rid of duplication this._holePoints = []; if (!this._holes) { return; } var i, j, len, len2; for (i = 0, len = this._holes.length; i < len; i++) { this._holePoints[i] = []; for (j = 0, len2 = this._holes[i].length; j < len2; j++) { this._holePoints[i][j] = this._map.latLngToLayerPoint(this._holes[i][j]); } } }, _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._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', container = L.DomUtil.create('div', zoomName + ' leaflet-bar'); this._map = map; this._zoomInButton = this._createButton( '+', 'Zoom in', zoomName + '-in', container, this._zoomIn, this); this._zoomOutButton = this._createButton( '-', 'Zoom out', zoomName + '-out', 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-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 Leaflet' }, 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 = ' 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));