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‎LICENSE

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Copyright (c) 2013 Nathan Mahdavi
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎dist/.DS_Store

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‎examples/index.html

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<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
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<script src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script>
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<script src="../src/leaflet.plotter.js"></script>
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<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css" />
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<!--[if lte IE 8]>
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<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.ie.css" />
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<![endif]-->
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<style>
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body { margin:0; padding:0; }
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#map { position:absolute; top:0; bottom:0; width:100%; }
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</style>
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</head>
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<body>
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<div id="map"></div>
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<script type="text/javascript">
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var map = L.map('map').setView([51.505, -0.09], 13);
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L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
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attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
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}).addTo(map);
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var plottedPolyline = L.Polyline.Plotter([
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[51.53662, -0.09218],
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[51.54281, -0.10712],
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[51.5394, -0.12394],
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[51.53246, -0.12772],
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[51.50735, -0.09253],
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[51.53085, -0.0563],
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[51.53865, -0.06008],
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[51.54164, -0.07502],
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[51.53662, -0.08875]
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],{
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weight: 5
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}).addTo(map);
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</script>
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</body>
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</html>

‎src/leaflet.plotter.js

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L.Polyline.plotter = L.Polyline.extend({
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_lineMarkers: [],
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_editIcon: L.divIcon({className: 'leaflet-div-icon leaflet-editing-icon'}),
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_halfwayPointMarkers: [],
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_existingLatLngs: [],
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options: {
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weight: 2,
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color: '#000'
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},
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initialize: function (latlngs, options){
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this._setExistingLatLngs(latlngs);
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L.Polyline.prototype.initialize.call(this, [], options);
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},
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onAdd: function (map) {
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L.Polyline.prototype.onAdd.call(this, map);
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this._map = map;
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this._plotExisting();
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this._bindMapClick();
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},
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setLatLngs: function(latlngs){
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L.Polyline.prototype.setLatLngs.call(this, latlngs);
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},
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_bindMapClick: function(){
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this._map.on('click', this._addNewMarker, this);
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},
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_setExistingLatLngs: function(latlngs){
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this._existingLatLngs = latlngs;
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},
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_replot: function(){
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this._redraw();
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this._redrawHalfwayPoints();
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},
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_getNewMarker: function(latlng, options){
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options.draggable = true;
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return new L.marker(latlng, options);
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},
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_addToMapAndBindMarker: function(newMarker){
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newMarker.addTo(this._map);
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newMarker.on('click', this._removePoint, this);
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newMarker.on('drag', this._replot, this);
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},
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_removePoint: function(e){
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this._map.removeLayer(this._lineMarkers[this._lineMarkers.indexOf(e.target)]);
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this._lineMarkers.splice(this._lineMarkers.indexOf(e.target), 1);
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this._replot();
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},
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_addNewMarker: function(e){
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var newMarker = this._getNewMarker(e.latlng, { icon: this._editIcon });
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this._addToMapAndBindMarker(newMarker);
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this._lineMarkers.push(newMarker);
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this._replot();
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},
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_redrawHalfwayPoints: function(){
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for(index in this._halfwayPointMarkers){
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index = parseInt(index);
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this._map.removeLayer(this._halfwayPointMarkers[index]);
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}
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for(index in this._lineMarkers){
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index = parseInt(index);
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if(typeof this._lineMarkers[index + 1] === 'undefined'){
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return;
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}
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var halfwayMarker = new L.Marker([
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(this._lineMarkers[index].getLatLng().lat + this._lineMarkers[index + 1].getLatLng().lat) / 2,
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(this._lineMarkers[index].getLatLng().lng + this._lineMarkers[index + 1].getLatLng().lng) / 2,
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], { icon: this._editIcon, opacity: 0.5 }).addTo(this._map);
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halfwayMarker.index = index;
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halfwayMarker.on('click', this._addHalfwayPoint, this);
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this._halfwayPointMarkers.push(halfwayMarker);
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}
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},
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_addHalfwayPoint: function(e){
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var newMarker = this._getNewMarker(e.latlng, { icon: this._editIcon });
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this._addToMapAndBindMarker(newMarker);
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this._lineMarkers.splice(e.target.index + 1, 0, newMarker);
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this._replot();
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},
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_plotExisting: function(){
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for(index in this._existingLatLngs){
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this._addNewMarker({
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latlng: new L.LatLng(
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this._existingLatLngs[index][0],
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this._existingLatLngs[index][1]
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)
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});
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}
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},
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_redraw: function(){
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this.setLatLngs([]);
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this.redraw();
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for(index in this._lineMarkers){
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this.addLatLng(this._lineMarkers[index].getLatLng());
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}
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this.redraw();
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}
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});
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L.Polyline.Plotter = function(latlngs, options){
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return new L.Polyline.plotter(latlngs, options);
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};

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