openlayers/examples/custom-control-point.html

   1 <html xmlns="http://www.w3.org/1999/xhtml">
   2   <head>
   3     <title>OpenLayers Custom Control Point Examle</title>
   4     <link rel="stylesheet" href="../theme/default/style.css" type="text/css" />
   5     <link rel="stylesheet" href="style.css" type="text/css" />
   6     <script src="../lib/OpenLayers.js"></script>
   7     <script type="text/javascript">
   8         var lon = 5;
   9         var lat = 40;
  10         var zoom = 5;
  11         var map, layer;
  12
  13         function init(){
  14             map = new OpenLayers.Map( $('map') );
  15
  16             layer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
  17                     "http://labs.metacarta.com/wms/vmap0", {layers: 'basic'} );
  18
  19             var control = new OpenLayers.Control();
  20             OpenLayers.Util.extend(control, {
  21                 draw: function () {
  22                     // this Handler.Point will intercept the shift-mousedown
  23                     // before Control.MouseDefault gets to see it
  24                     this.point = new OpenLayers.Handler.Point( control,
  25                         {"done": this.notice},
  26                         {keyMask: OpenLayers.Handler.MOD_SHIFT});
  27                     this.point.activate();
  28                 },
  29
  30                 notice: function (bounds) {
  31                     document.getElementById('bounds').innerHTML = bounds;
  32                 }
  33             });
  34
  35             map.addLayer(layer);
  36             map.addControl(control);
  37             map.setCenter(new OpenLayers.LonLat(lon, lat), zoom);
  38         }
  39     </script>
  40   </head>
  41   <body onload="init()">
  42       <h1 id="title">Custom Control Point Example</h1>
  43
  44       <div id="tags">
  45       </div>
  46
  47       <p id="shortdesc">
  48           Demonstrate the addition of a point reporting control to the OpenLayers window.
  49       </p>
  50
  51     <div id="map" class="smallmap"></div>
  52     <div id="bounds"></div>
  53
  54     <div id="docs"></div>
  55   </body>
  56 </html>