894 lines
34 KiB
JavaScript
894 lines
34 KiB
JavaScript
/*!
|
|
Copyright (c) 2016 Dominik Moritz
|
|
|
|
This file is part of the leaflet locate control. It is licensed under the MIT license.
|
|
You can find the project at: https://github.com/domoritz/leaflet-locatecontrol
|
|
*/
|
|
(function (factory, window) {
|
|
// see https://github.com/Leaflet/Leaflet/blob/master/PLUGIN-GUIDE.md#module-loaders
|
|
// for details on how to structure a leaflet plugin.
|
|
|
|
// define an AMD module that relies on 'leaflet'
|
|
if (typeof define === 'function' && define.amd) {
|
|
define(['leaflet'], factory);
|
|
|
|
// define a Common JS module that relies on 'leaflet'
|
|
} else if (typeof exports === 'object') {
|
|
if (typeof window !== 'undefined' && window.L) {
|
|
module.exports = factory(L);
|
|
} else {
|
|
module.exports = factory(require('leaflet'));
|
|
}
|
|
}
|
|
|
|
// attach your plugin to the global 'L' variable
|
|
if (typeof window !== 'undefined' && window.L){
|
|
window.L.Control.Locate = factory(L);
|
|
}
|
|
} (function (L) {
|
|
var LDomUtilApplyClassesMethod = function(method, element, classNames) {
|
|
classNames = classNames.split(' ');
|
|
classNames.forEach(function(className) {
|
|
L.DomUtil[method].call(this, element, className);
|
|
});
|
|
};
|
|
|
|
var addClasses = function(el, names) { LDomUtilApplyClassesMethod('addClass', el, names); };
|
|
var removeClasses = function(el, names) { LDomUtilApplyClassesMethod('removeClass', el, names); };
|
|
|
|
/**
|
|
* Compatible with L.Circle but a true marker instead of a path
|
|
*/
|
|
var LocationMarker = L.Marker.extend({
|
|
initialize: function (latlng, options) {
|
|
L.Util.setOptions(this, options);
|
|
this._latlng = latlng;
|
|
this.createIcon();
|
|
},
|
|
|
|
/**
|
|
* Create a styled circle location marker
|
|
*/
|
|
createIcon: function() {
|
|
var opt = this.options;
|
|
|
|
var style = '';
|
|
|
|
if (opt.color !== undefined) {
|
|
style += 'stroke:'+opt.color+';';
|
|
}
|
|
if (opt.weight !== undefined) {
|
|
style += 'stroke-width:'+opt.weight+';';
|
|
}
|
|
if (opt.fillColor !== undefined) {
|
|
style += 'fill:'+opt.fillColor+';';
|
|
}
|
|
if (opt.fillOpacity !== undefined) {
|
|
style += 'fill-opacity:'+opt.fillOpacity+';';
|
|
}
|
|
if (opt.opacity !== undefined) {
|
|
style += 'opacity:'+opt.opacity+';';
|
|
}
|
|
|
|
var icon = this._getIconSVG(opt, style);
|
|
|
|
this._locationIcon = L.divIcon({
|
|
className: icon.className,
|
|
html: icon.svg,
|
|
iconSize: [icon.w,icon.h],
|
|
});
|
|
|
|
this.setIcon(this._locationIcon);
|
|
},
|
|
|
|
/**
|
|
* Return the raw svg for the shape
|
|
*
|
|
* Split so can be easily overridden
|
|
*/
|
|
_getIconSVG: function(options, style) {
|
|
var r = options.radius;
|
|
var w = options.weight;
|
|
var s = r + w;
|
|
var s2 = s * 2;
|
|
var svg = '<svg xmlns="http://www.w3.org/2000/svg" width="'+s2+'" height="'+s2+'" version="1.1" viewBox="-'+s+' -'+s+' '+s2+' '+s2+'">' +
|
|
'<circle r="'+r+'" style="'+style+'" />' +
|
|
'</svg>';
|
|
return {
|
|
className: 'leaflet-control-locate-location',
|
|
svg: svg,
|
|
w: s2,
|
|
h: s2
|
|
};
|
|
},
|
|
|
|
setStyle: function(style) {
|
|
L.Util.setOptions(this, style);
|
|
this.createIcon();
|
|
}
|
|
});
|
|
|
|
var CompassMarker = LocationMarker.extend({
|
|
initialize: function (latlng, heading, options) {
|
|
L.Util.setOptions(this, options);
|
|
this._latlng = latlng;
|
|
this._heading = heading;
|
|
this.createIcon();
|
|
},
|
|
|
|
setHeading: function(heading) {
|
|
this._heading = heading;
|
|
},
|
|
|
|
/**
|
|
* Create a styled arrow compass marker
|
|
*/
|
|
_getIconSVG: function(options, style) {
|
|
var r = options.radius;
|
|
var w = (options.width + options.weight);
|
|
var h = (r+options.depth + options.weight)*2;
|
|
var path = 'M0,0 l'+(options.width/2)+','+options.depth+' l-'+(w)+',0 z';
|
|
var svgstyle = 'transform: rotate('+this._heading+'deg)';
|
|
var svg = '<svg xmlns="http://www.w3.org/2000/svg" width="'+(w)+'" height="'+h+'" version="1.1" viewBox="-'+(w/2)+' 0 '+w+' '+h+'" style="'+svgstyle+'">'+
|
|
'<path d="'+path+'" style="'+style+'" />'+
|
|
'</svg>';
|
|
return {
|
|
className: 'leafet-control-locate-heading',
|
|
svg: svg,
|
|
w: w,
|
|
h: h
|
|
};
|
|
},
|
|
});
|
|
|
|
|
|
var LocateControl = L.Control.extend({
|
|
options: {
|
|
/** Position of the control */
|
|
position: 'topleft',
|
|
/** The layer that the user's location should be drawn on. By default creates a new layer. */
|
|
layer: undefined,
|
|
/**
|
|
* Automatically sets the map view (zoom and pan) to the user's location as it updates.
|
|
* While the map is following the user's location, the control is in the `following` state,
|
|
* which changes the style of the control and the circle marker.
|
|
*
|
|
* Possible values:
|
|
* - false: never updates the map view when location changes.
|
|
* - 'once': set the view when the location is first determined
|
|
* - 'always': always updates the map view when location changes.
|
|
* The map view follows the user's location.
|
|
* - 'untilPan': like 'always', except stops updating the
|
|
* view if the user has manually panned the map.
|
|
* The map view follows the user's location until she pans.
|
|
* - 'untilPanOrZoom': (default) like 'always', except stops updating the
|
|
* view if the user has manually panned the map.
|
|
* The map view follows the user's location until she pans.
|
|
*/
|
|
setView: 'untilPanOrZoom',
|
|
/** Keep the current map zoom level when setting the view and only pan. */
|
|
keepCurrentZoomLevel: false,
|
|
/**
|
|
* This callback can be used to override the viewport tracking
|
|
* This function should return a LatLngBounds object.
|
|
*
|
|
* For example to extend the viewport to ensure that a particular LatLng is visible:
|
|
*
|
|
* getLocationBounds: function(locationEvent) {
|
|
* return locationEvent.bounds.extend([-33.873085, 151.219273]);
|
|
* },
|
|
*/
|
|
getLocationBounds: function (locationEvent) {
|
|
return locationEvent.bounds;
|
|
},
|
|
/** Smooth pan and zoom to the location of the marker. Only works in Leaflet 1.0+. */
|
|
flyTo: false,
|
|
/**
|
|
* The user location can be inside and outside the current view when the user clicks on the
|
|
* control that is already active. Both cases can be configures separately.
|
|
* Possible values are:
|
|
* - 'setView': zoom and pan to the current location
|
|
* - 'stop': stop locating and remove the location marker
|
|
*/
|
|
clickBehavior: {
|
|
/** What should happen if the user clicks on the control while the location is within the current view. */
|
|
inView: 'stop',
|
|
/** What should happen if the user clicks on the control while the location is outside the current view. */
|
|
outOfView: 'setView',
|
|
/**
|
|
* What should happen if the user clicks on the control while the location is within the current view
|
|
* and we could be following but are not. Defaults to a special value which inherits from 'inView';
|
|
*/
|
|
inViewNotFollowing: 'inView',
|
|
},
|
|
/**
|
|
* If set, save the map bounds just before centering to the user's
|
|
* location. When control is disabled, set the view back to the
|
|
* bounds that were saved.
|
|
*/
|
|
returnToPrevBounds: false,
|
|
/**
|
|
* Keep a cache of the location after the user deactivates the control. If set to false, the user has to wait
|
|
* until the locate API returns a new location before they see where they are again.
|
|
*/
|
|
cacheLocation: true,
|
|
/** If set, a circle that shows the location accuracy is drawn. */
|
|
drawCircle: true,
|
|
/** If set, the marker at the users' location is drawn. */
|
|
drawMarker: true,
|
|
/** If set and supported then show the compass heading */
|
|
showCompass: true,
|
|
/** The class to be used to create the marker. For example L.CircleMarker or L.Marker */
|
|
markerClass: LocationMarker,
|
|
/** The class us be used to create the compass bearing arrow */
|
|
compassClass: CompassMarker,
|
|
/** Accuracy circle style properties. NOTE these styles should match the css animations styles */
|
|
circleStyle: {
|
|
className: 'leaflet-control-locate-circle',
|
|
color: '#136AEC',
|
|
fillColor: '#136AEC',
|
|
fillOpacity: 0.15,
|
|
weight: 0
|
|
},
|
|
/** Inner marker style properties. Only works if your marker class supports `setStyle`. */
|
|
markerStyle: {
|
|
className: 'leaflet-control-locate-marker',
|
|
color: '#fff',
|
|
fillColor: '#2A93EE',
|
|
fillOpacity: 1,
|
|
weight: 3,
|
|
opacity: 1,
|
|
radius: 9
|
|
},
|
|
/** Compass */
|
|
compassStyle: {
|
|
fillColor: '#2A93EE',
|
|
fillOpacity: 1,
|
|
weight: 0,
|
|
color: '#fff',
|
|
opacity: 1,
|
|
radius: 9, // How far is the arrow is from the center of of the marker
|
|
width: 9, // Width of the arrow
|
|
depth: 6 // Length of the arrow
|
|
},
|
|
/**
|
|
* Changes to accuracy circle and inner marker while following.
|
|
* It is only necessary to provide the properties that should change.
|
|
*/
|
|
followCircleStyle: {},
|
|
followMarkerStyle: {
|
|
// color: '#FFA500',
|
|
// fillColor: '#FFB000'
|
|
},
|
|
followCompassStyle: {},
|
|
/** The CSS class for the icon. For example fa-location-arrow or fa-map-marker */
|
|
icon: 'fa fa-map-marker',
|
|
iconLoading: 'fa fa-spinner fa-spin',
|
|
/** The element to be created for icons. For example span or i */
|
|
iconElementTag: 'span',
|
|
/** Padding around the accuracy circle. */
|
|
circlePadding: [0, 0],
|
|
/** Use metric units. */
|
|
metric: true,
|
|
/**
|
|
* This callback can be used in case you would like to override button creation behavior.
|
|
* This is useful for DOM manipulation frameworks such as angular etc.
|
|
* This function should return an object with HtmlElement for the button (link property) and the icon (icon property).
|
|
*/
|
|
createButtonCallback: function (container, options) {
|
|
var link = L.DomUtil.create('a', 'leaflet-bar-part leaflet-bar-part-single', container);
|
|
link.title = options.strings.title;
|
|
var icon = L.DomUtil.create(options.iconElementTag, options.icon, link);
|
|
return { link: link, icon: icon };
|
|
},
|
|
/** This event is called in case of any location error that is not a time out error. */
|
|
onLocationError: function(err, control) {
|
|
alert(err.message);
|
|
},
|
|
/**
|
|
* This event is called when the user's location is outside the bounds set on the map.
|
|
* The event is called repeatedly when the location changes.
|
|
*/
|
|
onLocationOutsideMapBounds: function(control) {
|
|
control.stop();
|
|
alert(control.options.strings.outsideMapBoundsMsg);
|
|
},
|
|
/** Display a pop-up when the user click on the inner marker. */
|
|
showPopup: true,
|
|
strings: {
|
|
title: "Show me where I am",
|
|
metersUnit: "meters",
|
|
feetUnit: "feet",
|
|
popup: "You are within {distance} {unit} from this point",
|
|
outsideMapBoundsMsg: "You seem located outside the boundaries of the map"
|
|
},
|
|
/** The default options passed to leaflets locate method. */
|
|
locateOptions: {
|
|
maxZoom: Infinity,
|
|
watch: true, // if you overwrite this, visualization cannot be updated
|
|
setView: false // have to set this to false because we have to
|
|
// do setView manually
|
|
}
|
|
},
|
|
|
|
initialize: function (options) {
|
|
// set default options if nothing is set (merge one step deep)
|
|
for (var i in options) {
|
|
if (typeof this.options[i] === 'object') {
|
|
L.extend(this.options[i], options[i]);
|
|
} else {
|
|
this.options[i] = options[i];
|
|
}
|
|
}
|
|
|
|
// extend the follow marker style and circle from the normal style
|
|
this.options.followMarkerStyle = L.extend({}, this.options.markerStyle, this.options.followMarkerStyle);
|
|
this.options.followCircleStyle = L.extend({}, this.options.circleStyle, this.options.followCircleStyle);
|
|
this.options.followCompassStyle = L.extend({}, this.options.compassStyle, this.options.followCompassStyle);
|
|
},
|
|
|
|
/**
|
|
* Add control to map. Returns the container for the control.
|
|
*/
|
|
onAdd: function (map) {
|
|
var container = L.DomUtil.create('div',
|
|
'leaflet-control-locate leaflet-bar leaflet-control');
|
|
|
|
this._layer = this.options.layer || new L.LayerGroup();
|
|
this._layer.addTo(map);
|
|
this._event = undefined;
|
|
this._compassHeading = null;
|
|
this._prevBounds = null;
|
|
|
|
var linkAndIcon = this.options.createButtonCallback(container, this.options);
|
|
this._link = linkAndIcon.link;
|
|
this._icon = linkAndIcon.icon;
|
|
|
|
L.DomEvent
|
|
.on(this._link, 'click', L.DomEvent.stopPropagation)
|
|
.on(this._link, 'click', L.DomEvent.preventDefault)
|
|
.on(this._link, 'click', this._onClick, this)
|
|
.on(this._link, 'dblclick', L.DomEvent.stopPropagation);
|
|
|
|
this._resetVariables();
|
|
|
|
this._map.on('unload', this._unload, this);
|
|
|
|
return container;
|
|
},
|
|
|
|
/**
|
|
* This method is called when the user clicks on the control.
|
|
*/
|
|
_onClick: function() {
|
|
this._justClicked = true;
|
|
var wasFollowing = this._isFollowing();
|
|
this._userPanned = false;
|
|
this._userZoomed = false;
|
|
|
|
if (this._active && !this._event) {
|
|
// click while requesting
|
|
this.stop();
|
|
} else if (this._active && this._event !== undefined) {
|
|
var behaviors = this.options.clickBehavior;
|
|
var behavior = behaviors.outOfView;
|
|
if (this._map.getBounds().contains(this._event.latlng)) {
|
|
behavior = wasFollowing ? behaviors.inView : behaviors.inViewNotFollowing;
|
|
}
|
|
|
|
// Allow inheriting from another behavior
|
|
if (behaviors[behavior]) {
|
|
behavior = behaviors[behavior];
|
|
}
|
|
|
|
switch (behavior) {
|
|
case 'setView':
|
|
this.setView();
|
|
break;
|
|
case 'stop':
|
|
this.stop();
|
|
if (this.options.returnToPrevBounds) {
|
|
var f = this.options.flyTo ? this._map.flyToBounds : this._map.fitBounds;
|
|
f.bind(this._map)(this._prevBounds);
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
if (this.options.returnToPrevBounds) {
|
|
this._prevBounds = this._map.getBounds();
|
|
}
|
|
this.start();
|
|
}
|
|
|
|
this._updateContainerStyle();
|
|
},
|
|
|
|
/**
|
|
* Starts the plugin:
|
|
* - activates the engine
|
|
* - draws the marker (if coordinates available)
|
|
*/
|
|
start: function() {
|
|
this._activate();
|
|
|
|
if (this._event) {
|
|
this._drawMarker(this._map);
|
|
|
|
// if we already have a location but the user clicked on the control
|
|
if (this.options.setView) {
|
|
this.setView();
|
|
}
|
|
}
|
|
this._updateContainerStyle();
|
|
},
|
|
|
|
/**
|
|
* Stops the plugin:
|
|
* - deactivates the engine
|
|
* - reinitializes the button
|
|
* - removes the marker
|
|
*/
|
|
stop: function() {
|
|
this._deactivate();
|
|
|
|
this._cleanClasses();
|
|
this._resetVariables();
|
|
|
|
this._removeMarker();
|
|
},
|
|
|
|
/**
|
|
* Keep the control active but stop following the location
|
|
*/
|
|
stopFollowing: function() {
|
|
this._userPanned = true;
|
|
this._updateContainerStyle();
|
|
this._drawMarker();
|
|
},
|
|
|
|
/**
|
|
* This method launches the location engine.
|
|
* It is called before the marker is updated,
|
|
* event if it does not mean that the event will be ready.
|
|
*
|
|
* Override it if you want to add more functionalities.
|
|
* It should set the this._active to true and do nothing if
|
|
* this._active is true.
|
|
*/
|
|
_activate: function() {
|
|
if (!this._active) {
|
|
this._map.locate(this.options.locateOptions);
|
|
this._active = true;
|
|
|
|
// bind event listeners
|
|
this._map.on('locationfound', this._onLocationFound, this);
|
|
this._map.on('locationerror', this._onLocationError, this);
|
|
this._map.on('dragstart', this._onDrag, this);
|
|
this._map.on('zoomstart', this._onZoom, this);
|
|
this._map.on('zoomend', this._onZoomEnd, this);
|
|
if (this.options.showCompass) {
|
|
if ('ondeviceorientationabsolute' in window) {
|
|
L.DomEvent.on(window, 'deviceorientationabsolute', this._onDeviceOrientation, this);
|
|
} else if ('ondeviceorientation' in window) {
|
|
L.DomEvent.on(window, 'deviceorientation', this._onDeviceOrientation, this);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called to stop the location engine.
|
|
*
|
|
* Override it to shutdown any functionalities you added on start.
|
|
*/
|
|
_deactivate: function() {
|
|
this._map.stopLocate();
|
|
this._active = false;
|
|
|
|
if (!this.options.cacheLocation) {
|
|
this._event = undefined;
|
|
}
|
|
|
|
// unbind event listeners
|
|
this._map.off('locationfound', this._onLocationFound, this);
|
|
this._map.off('locationerror', this._onLocationError, this);
|
|
this._map.off('dragstart', this._onDrag, this);
|
|
this._map.off('zoomstart', this._onZoom, this);
|
|
this._map.off('zoomend', this._onZoomEnd, this);
|
|
if (this.options.showCompass) {
|
|
this._compassHeading = null;
|
|
if ('ondeviceorientationabsolute' in window) {
|
|
L.DomEvent.off(window, 'deviceorientationabsolute', this._onDeviceOrientation, this);
|
|
} else if ('ondeviceorientation' in window) {
|
|
L.DomEvent.off(window, 'deviceorientation', this._onDeviceOrientation, this);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Zoom (unless we should keep the zoom level) and an to the current view.
|
|
*/
|
|
setView: function() {
|
|
this._drawMarker();
|
|
if (this._isOutsideMapBounds()) {
|
|
this._event = undefined; // clear the current location so we can get back into the bounds
|
|
this.options.onLocationOutsideMapBounds(this);
|
|
} else {
|
|
if (this.options.keepCurrentZoomLevel) {
|
|
var f = this.options.flyTo ? this._map.flyTo : this._map.panTo;
|
|
f.bind(this._map)([this._event.latitude, this._event.longitude]);
|
|
} else {
|
|
var f = this.options.flyTo ? this._map.flyToBounds : this._map.fitBounds;
|
|
// Ignore zoom events while setting the viewport as these would stop following
|
|
this._ignoreEvent = true;
|
|
f.bind(this._map)(this.options.getLocationBounds(this._event), {
|
|
padding: this.options.circlePadding,
|
|
maxZoom: this.options.locateOptions.maxZoom
|
|
});
|
|
L.Util.requestAnimFrame(function(){
|
|
// Wait until after the next animFrame because the flyTo can be async
|
|
this._ignoreEvent = false;
|
|
}, this);
|
|
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
*
|
|
*/
|
|
_drawCompass: function() {
|
|
var latlng = this._event.latlng;
|
|
|
|
if (this.options.showCompass && latlng && this._compassHeading !== null) {
|
|
var cStyle = this._isFollowing() ? this.options.followCompassStyle : this.options.compassStyle;
|
|
if (!this._compass) {
|
|
this._compass = new this.options.compassClass(latlng, this._compassHeading, cStyle).addTo(this._layer);
|
|
} else {
|
|
this._compass.setLatLng(latlng);
|
|
this._compass.setHeading(this._compassHeading);
|
|
// If the compassClass can be updated with setStyle, update it.
|
|
if (this._compass.setStyle) {
|
|
this._compass.setStyle(cStyle);
|
|
}
|
|
}
|
|
//
|
|
}
|
|
if (this._compass && (!this.options.showCompass || this._compassHeading === null)) {
|
|
this._compass.removeFrom(this._layer);
|
|
this._compass = null;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Draw the marker and accuracy circle on the map.
|
|
*
|
|
* Uses the event retrieved from onLocationFound from the map.
|
|
*/
|
|
_drawMarker: function() {
|
|
if (this._event.accuracy === undefined) {
|
|
this._event.accuracy = 0;
|
|
}
|
|
|
|
var radius = this._event.accuracy;
|
|
var latlng = this._event.latlng;
|
|
|
|
// circle with the radius of the location's accuracy
|
|
if (this.options.drawCircle) {
|
|
var style = this._isFollowing() ? this.options.followCircleStyle : this.options.circleStyle;
|
|
|
|
if (!this._circle) {
|
|
this._circle = L.circle(latlng, radius, style).addTo(this._layer);
|
|
} else {
|
|
this._circle.setLatLng(latlng).setRadius(radius).setStyle(style);
|
|
}
|
|
}
|
|
|
|
var distance, unit;
|
|
if (this.options.metric) {
|
|
distance = radius.toFixed(0);
|
|
unit = this.options.strings.metersUnit;
|
|
} else {
|
|
distance = (radius * 3.2808399).toFixed(0);
|
|
unit = this.options.strings.feetUnit;
|
|
}
|
|
|
|
// small inner marker
|
|
if (this.options.drawMarker) {
|
|
var mStyle = this._isFollowing() ? this.options.followMarkerStyle : this.options.markerStyle;
|
|
if (!this._marker) {
|
|
this._marker = new this.options.markerClass(latlng, mStyle).addTo(this._layer);
|
|
} else {
|
|
this._marker.setLatLng(latlng);
|
|
// If the markerClass can be updated with setStyle, update it.
|
|
if (this._marker.setStyle) {
|
|
this._marker.setStyle(mStyle);
|
|
}
|
|
}
|
|
}
|
|
|
|
this._drawCompass();
|
|
|
|
var t = this.options.strings.popup;
|
|
if (this.options.showPopup && t && this._marker) {
|
|
this._marker
|
|
.bindPopup(L.Util.template(t, {distance: distance, unit: unit}))
|
|
._popup.setLatLng(latlng);
|
|
}
|
|
if (this.options.showPopup && t && this._compass) {
|
|
this._compass
|
|
.bindPopup(L.Util.template(t, {distance: distance, unit: unit}))
|
|
._popup.setLatLng(latlng);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Remove the marker from map.
|
|
*/
|
|
_removeMarker: function() {
|
|
this._layer.clearLayers();
|
|
this._marker = undefined;
|
|
this._circle = undefined;
|
|
},
|
|
|
|
/**
|
|
* Unload the plugin and all event listeners.
|
|
* Kind of the opposite of onAdd.
|
|
*/
|
|
_unload: function() {
|
|
this.stop();
|
|
this._map.off('unload', this._unload, this);
|
|
},
|
|
|
|
/**
|
|
* Sets the compass heading
|
|
*/
|
|
_setCompassHeading: function(angle) {
|
|
if (!isNaN(parseFloat(angle)) && isFinite(angle)) {
|
|
angle = Math.round(angle);
|
|
|
|
this._compassHeading = angle;
|
|
L.Util.requestAnimFrame(this._drawCompass, this);
|
|
} else {
|
|
this._compassHeading = null;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* If the compass fails calibration just fail safely and remove the compass
|
|
*/
|
|
_onCompassNeedsCalibration: function() {
|
|
this._setCompassHeading();
|
|
},
|
|
|
|
/**
|
|
* Process and normalise compass events
|
|
*/
|
|
_onDeviceOrientation: function(e) {
|
|
if (!this._active) {
|
|
return;
|
|
}
|
|
|
|
if (e.webkitCompassHeading) {
|
|
// iOS
|
|
this._setCompassHeading(e.webkitCompassHeading);
|
|
} else if (e.absolute && e.alpha) {
|
|
// Android
|
|
this._setCompassHeading(360 - e.alpha)
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Calls deactivate and dispatches an error.
|
|
*/
|
|
_onLocationError: function(err) {
|
|
// ignore time out error if the location is watched
|
|
if (err.code == 3 && this.options.locateOptions.watch) {
|
|
return;
|
|
}
|
|
|
|
this.stop();
|
|
this.options.onLocationError(err, this);
|
|
},
|
|
|
|
/**
|
|
* Stores the received event and updates the marker.
|
|
*/
|
|
_onLocationFound: function(e) {
|
|
// no need to do anything if the location has not changed
|
|
if (this._event &&
|
|
(this._event.latlng.lat === e.latlng.lat &&
|
|
this._event.latlng.lng === e.latlng.lng &&
|
|
this._event.accuracy === e.accuracy)) {
|
|
return;
|
|
}
|
|
|
|
if (!this._active) {
|
|
// we may have a stray event
|
|
return;
|
|
}
|
|
|
|
this._event = e;
|
|
|
|
this._drawMarker();
|
|
this._updateContainerStyle();
|
|
|
|
switch (this.options.setView) {
|
|
case 'once':
|
|
if (this._justClicked) {
|
|
this.setView();
|
|
}
|
|
break;
|
|
case 'untilPan':
|
|
if (!this._userPanned) {
|
|
this.setView();
|
|
}
|
|
break;
|
|
case 'untilPanOrZoom':
|
|
if (!this._userPanned && !this._userZoomed) {
|
|
this.setView();
|
|
}
|
|
break;
|
|
case 'always':
|
|
this.setView();
|
|
break;
|
|
case false:
|
|
// don't set the view
|
|
break;
|
|
}
|
|
|
|
this._justClicked = false;
|
|
},
|
|
|
|
/**
|
|
* When the user drags. Need a separate event so we can bind and unbind event listeners.
|
|
*/
|
|
_onDrag: function() {
|
|
// only react to drags once we have a location
|
|
if (this._event && !this._ignoreEvent) {
|
|
this._userPanned = true;
|
|
this._updateContainerStyle();
|
|
this._drawMarker();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* When the user zooms. Need a separate event so we can bind and unbind event listeners.
|
|
*/
|
|
_onZoom: function() {
|
|
// only react to drags once we have a location
|
|
if (this._event && !this._ignoreEvent) {
|
|
this._userZoomed = true;
|
|
this._updateContainerStyle();
|
|
this._drawMarker();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* After a zoom ends update the compass and handle sideways zooms
|
|
*/
|
|
_onZoomEnd: function() {
|
|
if (this._event) {
|
|
this._drawCompass();
|
|
}
|
|
|
|
if (this._event && !this._ignoreEvent) {
|
|
// If we have zoomed in and out and ended up sideways treat it as a pan
|
|
if (!this._map.getBounds().pad(-.3).contains(this._marker.getLatLng())) {
|
|
this._userPanned = true;
|
|
this._updateContainerStyle();
|
|
this._drawMarker();
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Compute whether the map is following the user location with pan and zoom.
|
|
*/
|
|
_isFollowing: function() {
|
|
if (!this._active) {
|
|
return false;
|
|
}
|
|
|
|
if (this.options.setView === 'always') {
|
|
return true;
|
|
} else if (this.options.setView === 'untilPan') {
|
|
return !this._userPanned;
|
|
} else if (this.options.setView === 'untilPanOrZoom') {
|
|
return !this._userPanned && !this._userZoomed;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Check if location is in map bounds
|
|
*/
|
|
_isOutsideMapBounds: function() {
|
|
if (this._event === undefined) {
|
|
return false;
|
|
}
|
|
return this._map.options.maxBounds &&
|
|
!this._map.options.maxBounds.contains(this._event.latlng);
|
|
},
|
|
|
|
/**
|
|
* Toggles button class between following and active.
|
|
*/
|
|
_updateContainerStyle: function() {
|
|
if (!this._container) {
|
|
return;
|
|
}
|
|
|
|
if (this._active && !this._event) {
|
|
// active but don't have a location yet
|
|
this._setClasses('requesting');
|
|
} else if (this._isFollowing()) {
|
|
this._setClasses('following');
|
|
} else if (this._active) {
|
|
this._setClasses('active');
|
|
} else {
|
|
this._cleanClasses();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Sets the CSS classes for the state.
|
|
*/
|
|
_setClasses: function(state) {
|
|
if (state == 'requesting') {
|
|
removeClasses(this._container, "active following");
|
|
addClasses(this._container, "requesting");
|
|
|
|
removeClasses(this._icon, this.options.icon);
|
|
addClasses(this._icon, this.options.iconLoading);
|
|
} else if (state == 'active') {
|
|
removeClasses(this._container, "requesting following");
|
|
addClasses(this._container, "active");
|
|
|
|
removeClasses(this._icon, this.options.iconLoading);
|
|
addClasses(this._icon, this.options.icon);
|
|
} else if (state == 'following') {
|
|
removeClasses(this._container, "requesting");
|
|
addClasses(this._container, "active following");
|
|
|
|
removeClasses(this._icon, this.options.iconLoading);
|
|
addClasses(this._icon, this.options.icon);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Removes all classes from button.
|
|
*/
|
|
_cleanClasses: function() {
|
|
L.DomUtil.removeClass(this._container, "requesting");
|
|
L.DomUtil.removeClass(this._container, "active");
|
|
L.DomUtil.removeClass(this._container, "following");
|
|
|
|
removeClasses(this._icon, this.options.iconLoading);
|
|
addClasses(this._icon, this.options.icon);
|
|
},
|
|
|
|
/**
|
|
* Reinitializes state variables.
|
|
*/
|
|
_resetVariables: function() {
|
|
// whether locate is active or not
|
|
this._active = false;
|
|
|
|
// true if the control was clicked for the first time
|
|
// we need this so we can pan and zoom once we have the location
|
|
this._justClicked = false;
|
|
|
|
// true if the user has panned the map after clicking the control
|
|
this._userPanned = false;
|
|
|
|
// true if the user has zoomed the map after clicking the control
|
|
this._userZoomed = false;
|
|
}
|
|
});
|
|
|
|
L.control.locate = function (options) {
|
|
return new L.Control.Locate(options);
|
|
};
|
|
|
|
return LocateControl;
|
|
}, window));
|