htdocs/javascript/maps.js

   1 /***************************************************************************
   2  *  Copyright (C) 2003-2013 Polytechnique.org                              *
   3  *  http://opensource.polytechnique.org/                                   *
   4  *                                                                         *
   5  *  This program is free software; you can redistribute it and/or modify   *
   6  *  it under the terms of the GNU General Public License as published by   *
   7  *  the Free Software Foundation; either version 2 of the License, or      *
   8  *  (at your option) any later version.                                    *
   9  *                                                                         *
  10  *  This program is distributed in the hope that it will be useful,        *
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  13  *  GNU General Public License for more details.                           *
  14  *                                                                         *
  15  *  You should have received a copy of the GNU General Public License      *
  16  *  along with this program; if not, write to the Free Software            *
  17  *  Foundation, Inc.,                                                      *
  18  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  19  ***************************************************************************/
  20
  21 // http://code.google.com/apis/maps/documentation/javascript/
  22 // http://code.google.com/p/google-maps-utility-library-v3/wiki/Libraries
  23
  24 function map_initialize()
  25 {
  26     var myOptions = {
  27         zoom: 1,
  28         center: new google.maps.LatLng(0, 0),
  29         mapTypeId: google.maps.MapTypeId.ROADMAP
  30     };
  31     var map = new google.maps.Map($('#map_canvas').get(0), myOptions);
  32
  33     $.xget(window.location.href, {ajax: true}, function(json_data) {
  34         var data = jQuery.parseJSON(json_data);
  35         var dots = data.data;
  36         var count = dots.length;
  37         var info_window = new google.maps.InfoWindow({});
  38         var parameters = ", '_blank', 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=840,height=600'";
  39         var markers = [];
  40
  41         for (var i = 0; i < count; ++i) {
  42             var latLng = new google.maps.LatLng(dots[i].latitude, dots[i].longitude);
  43             var color = promos_to_color(dots[i].promo);
  44
  45             if (dots[i].hrpid.search(',') > -1) {
  46                 var hrpids = dots[i].hrpid.split(',');
  47                 var names = dots[i].name.split(',');
  48                 var link_array = new Array();
  49
  50                 for (var j = 0; j < hrpids.length; ++j) {
  51                     link_array[j] = '<a href="profile/' + hrpids[j] + '" onclick="window.open(this.href' + parameters + '); return false;">' + names[j] + '</a>';
  52                 }
  53                 var link = link_array.join('<br />');
  54             } else {
  55                 var link = '<a href="profile/' + dots[i].hrpid + '" onclick="window.open(this.href' + parameters + '); return false;">' + dots[i].name + '</a>';
  56             }
  57
  58             var marker = new google.maps.Marker({
  59                 'position': latLng,
  60                 'map': map,
  61                 'title': dots[i].name
  62             });
  63             marker.bindTo('icon', new ColoredIcon(color));
  64             marker.set('color', color);
  65             marker.set('html', link);
  66             google.maps.event.addListener(marker, 'click', function() {
  67                 info_window.setContent(this.html);
  68                 info_window.open(map, this);
  69             });
  70             markers.push(marker);
  71         }
  72         var mc = new MarkerClusterer(map, markers, {'averageCenter': true});
  73     });
  74 }
  75
  76 function ColoredIcon(color)
  77 {
  78     this.set('starcolor', null);
  79     this.set('color', color);
  80     this.set('icon', 'https://chart.googleapis.com/chart?chst=d_map_pin_letter&chld=|' + color);
  81 }
  82
  83 ColoredIcon.prototype = new google.maps.MVCObject();
  84
  85 var colors = new Array();
  86 colors['red'] = 'ff0000';
  87 colors['yellow'] = 'ffff00';
  88 colors['blue'] = '0000ff';
  89 colors['green'] = '00ff00';
  90 colors['gray'] = '606060';
  91
  92 function promos_to_color(promos)
  93 {
  94     var promos_array = promos.split(',');
  95     var length = promos_array.length;
  96
  97     if (length == 1) {
  98         return colors[promo_to_color(promos)];
  99     }
 100
 101     var color_array = new Array();
 102     for (var i = 0; i < length; ++i) {
 103         color_array[i] = promo_to_color(promos_array[i]);
 104     }
 105
 106     return color_average(color_array);
 107 }
 108
 109 function promo_to_color(promo)
 110 {
 111     var main_education = promo.charAt(0);
 112
 113     switch (main_education)
 114     {
 115       case 'X':
 116         var year_promo = promo.substr(1);
 117         if ((year_promo % 2) == 0) {
 118             return 'red';
 119         } else {
 120             return 'yellow';
 121         }
 122       case 'M':
 123         return 'green';
 124       case 'D':
 125         return 'blue';
 126       default:
 127         return 'gray';
 128     }
 129 }
 130
 131 function color_average(color_array)
 132 {
 133     var length = color_array.length;
 134     var rbg = new Array(0, 0, 0);
 135
 136     for (var i = 0; i < length; ++i) {
 137         switch (color_array[i])
 138         {
 139           case 'red':
 140             rbg[0] += 1;
 141             break;
 142           case 'yellow':
 143             rbg[0] += 1;
 144             rbg[1] += 1;
 145             break;
 146           case 'blue':
 147             rbg[1] += 1;
 148             break;
 149           case 'green':
 150             rbg[2] += 1;
 151             break;
 152           case 'gray':
 153             rbg[0] += 0.5;
 154             rbg[1] += 0.5;
 155             rbg[2] += 0.5;
 156             break;
 157           default:
 158             break;
 159         }
 160     }
 161
 162     var color_code = '';
 163     for (var i = 0; i < 3; ++i) {
 164         var color = Math.floor(rbg[i] / length * 255);
 165         var hexa = color.toString(16);
 166         if (hexa.length == 1) {
 167             hexa += '0';
 168         }
 169         color_code += hexa;
 170     }
 171
 172     return color_code;
 173 }
 174
 175 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: