htdocs/javascript/maps.js

   1 /***************************************************************************
   2  *  Copyright (C) 2003-2011 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 latlng = new google.maps.LatLng(0, 0);
  27     var myOptions = {
  28         zoom: 1,
  29         center: latlng,
  30         mapTypeId: google.maps.MapTypeId.ROADMAP
  31     };
  32     var map = new google.maps.Map($('#map_canvas').get(0), myOptions);
  33
  34     $.xget(window.location.href, {ajax: true}, function(json_data) {
  35         var data = jQuery.parseJSON(json_data);
  36         var dots = data.data;
  37         var count = dots.length;
  38         var markers = [];
  39
  40         for (var i = 0; i < count; ++i) {
  41             var latLng = new google.maps.LatLng(dots[i].latitude, dots[i].longitude);
  42             var color = promos_to_color(dots[i].promo);
  43
  44             if (dots[i].hrpid.search(',') > -1) {
  45                 var hrpids = dots[i].hrpid.split(',');
  46                 var names = dots[i].name.split(',');
  47                 var link_array = new Array();
  48
  49                 for (var j = 0; j < hrpids.length; ++j) {
  50                     link_array[j] = '<a href="profile/' + hrpids[j] + '">' + names[j] + '</a>';
  51                 }
  52                 var link = link_array.join('<br />');
  53             } else {
  54                 var link = '<a href="profile/' + dots[i].hrpid + '">' + dots[i].name + '</a>';
  55             }
  56
  57             var marker = new MarkerWithLabel({
  58                 'position': latLng,
  59                 'labelContent': link,
  60                 'labelClass': 'marker_label'
  61             });
  62             marker.bindTo('icon', new ColoredIcon(color));
  63             marker.set('color', color);
  64             markers.push(marker);
  65         }
  66         var mc = new MarkerClusterer(map, markers);
  67     });
  68 }
  69
  70 function ColoredIcon(color)
  71 {
  72     this.set('starcolor', null);
  73     this.set('color', color);
  74     this.set('icon', 'http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld=|' + color);
  75 }
  76
  77 ColoredIcon.prototype = new google.maps.MVCObject();
  78
  79 var colors = new Array();
  80 colors['red'] = 'ff0000';
  81 colors['yellow'] = 'ffff00';
  82 colors['blue'] = '0000ff';
  83 colors['green'] = '00ff00';
  84 colors['gray'] = '606060';
  85
  86 function promos_to_color(promos)
  87 {
  88     var promos_array = promos.split(',');
  89     var length = promos_array.length;
  90
  91     if (length == 1) {
  92         return colors[promo_to_color(promos)];
  93     }
  94
  95     var color_array = new Array();
  96     for (var i = 0; i < length; ++i) {
  97         color_array[i] = promo_to_color(promos_array[i]);
  98     }
  99
 100     return color_average(color_array);
 101 }
 102
 103 function promo_to_color(promo)
 104 {
 105     var main_education = promo.charAt(0);
 106
 107     switch (main_education)
 108     {
 109       case 'X':
 110         var year_promo = promo.substr(1);
 111         if ((year_promo % 2) == 0) {
 112             return 'red';
 113         } else {
 114             return 'yellow';
 115         }
 116       case 'M':
 117         return 'green';
 118       case 'D':
 119         return 'blue';
 120       default:
 121         return 'gray';
 122     }
 123 }
 124
 125 function color_average(color_array)
 126 {
 127     var length = color_array.length;
 128     var rbg = new Array(0, 0, 0);
 129
 130     for (var i = 0; i < length; ++i) {
 131         switch (color_array[i])
 132         {
 133           case 'red':
 134             rbg[0] += 1;
 135             break;
 136           case 'yellow':
 137             rbg[0] += 1;
 138             rbg[1] += 1;
 139             break;
 140           case 'blue':
 141             rbg[1] += 1;
 142             break;
 143           case 'green':
 144             rbg[2] += 1;
 145             break;
 146           case 'gray':
 147             rbg[0] += 0.5;
 148             rbg[1] += 0.5;
 149             rbg[2] += 0.5;
 150             break;
 151           default:
 152             break;
 153         }
 154     }
 155
 156     var color_code = '';
 157     for (var i = 0; i < 3; ++i) {
 158         var color = Math.floor(rbg[i] / length * 255);
 159         var hexa = color.toString(16);
 160         if (hexa.length == 1) {
 161             hexa += '0';
 162         }
 163         color_code += hexa;
 164     }
 165
 166     return color_code;
 167 }
 168
 169 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: