<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style type="text/css">
#map {
width: 512px;
height: 350px;
border: 1px solid gray;
}
#controlToggle li {
list-style: none;
}
p {
width: 512px;
}
</style>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script type="text/javascript">
<!--
var map, drawControls;
OpenLayers.Util.onImageLoadErrorColor = "transparent";
function init(){
map = new OpenLayers.Map('map');
var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
"http://labs.metacarta.com/wms/vmap0?", {layers: 'basic'});
var pointLayer = new OpenLayers.Layer.Vector("Point Layer");
var lineLayer = new OpenLayers.Layer.Vector("Line Layer");
var polygonLayer = new OpenLayers.Layer.Vector("Polygon Layer");
map.addLayers([wmsLayer, pointLayer, lineLayer, polygonLayer]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.addControl(new OpenLayers.Control.MousePosition());
var options = {handlerOptions: {freehand: true}};
drawControls = {
point: new OpenLayers.Control.DrawFeature(pointLayer,
OpenLayers.Handler.Point),
line: new OpenLayers.Control.DrawFeature(lineLayer,
OpenLayers.Handler.Path, options),
polygon: new OpenLayers.Control.DrawFeature(polygonLayer,
OpenLayers.Handler.Polygon, options)
};
for(var key in drawControls) {
map.addControl(drawControls[key]);
}
map.setCenter(new OpenLayers.LonLat(0, 0), 3);
document.getElementById('noneToggle').checked = true;
}
function toggleControl(element) {
for(key in drawControls) {
var control = drawControls[key];
if(element.value == key && element.checked) {
control.activate();
} else {
control.deactivate();
}
}
}
// -->
</script>
<script>
function addDiv()
{
var ec = document.getElementById('expandingContent');
var child = document.createElement('div');
child.innerHTML = 'new div';
ec.appendChild(child);
}
</script>
</head>
<body onload="init()">
<a href="javascript:addDiv();">Add div</a>
<div id="expandingContent"></div>
<h1>OpenLayers Draw Feature Example</h1>
<div id="map"></div>
<ul id="controlToggle">
<li>
<input type="radio" name="type" value="none" id="noneToggle"
onclick="toggleControl(this);" checked="checked" />
<label for="noneToggle">navigate</label>
</li>
<li>
<input type="radio" name="type" value="point" id="pointToggle" onclick="toggleControl(this);" />
<label for="pointToggle">draw point</label>
</li>
<li>
<input type="radio" name="type" value="line" id="lineToggle" onclick="toggleControl(this);" />
<label for="lineToggle">draw line</label>
</li>
<li>
<input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" />
<label for="polygonToggle">draw polygon</label>
</li>
</ul>
<p>Feature digitizing is in freehand mode by default. In freehand mode, the mouse is treated as a pen.
Drawing begins on mouse down, continues with every mouse move, and ends with mouse up.</p>
<p>To turn freehand mode off, hold down the shift key while digitizing. With freehand mode off, one
vertex is added with each click and double-clicks finish drawing. Freehand mode can be toggled on and off
at any time while drawing.</p>
</body>
</html>