Boxes.js
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/* Copyright (c) 2006-2011 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the Clear BSD license.
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Layer.js
* @requires OpenLayers/Layer/Markers.js
*/
/**
* Class: OpenLayers.Layer.Boxes
* Draw divs as 'boxes' on the layer.
*
* Inherits from:
* - <OpenLayers.Layer.Markers>
*/
OpenLayers.Layer.Boxes = OpenLayers.Class(OpenLayers.Layer.Markers, {
/**
* Constructor: OpenLayers.Layer.Boxes
*
* Parameters:
* name - {String}
* options - {Object} Hashtable of extra options to tag onto the layer
*/
initialize: function (name, options) {
OpenLayers.Layer.Markers.prototype.initialize.apply(this, arguments);
},
/**
* Method: drawMarker
* Calculate the pixel location for the marker, create it, and
* add it to the layer's div
*
* Parameters:
* marker - {<OpenLayers.Marker.Box>}
*/
drawMarker: function(marker) {
var bounds = marker.bounds;
var topleft = this.map.getLayerPxFromLonLat(
new OpenLayers.LonLat(bounds.left, bounds.top));
var botright = this.map.getLayerPxFromLonLat(
new OpenLayers.LonLat(bounds.right, bounds.bottom));
if (botright == null || topleft == null) {
marker.display(false);
} else {
var sz = new OpenLayers.Size(
Math.max(1, botright.x - topleft.x),
Math.max(1, botright.y - topleft.y));
var markerDiv = marker.draw(topleft, sz);
if (!marker.drawn) {
this.div.appendChild(markerDiv);
marker.drawn = true;
}
}
},
/**
* APIMethod: removeMarker
*
* Parameters:
* marker - {<OpenLayers.Marker.Box>}
*/
removeMarker: function(marker) {
OpenLayers.Util.removeItem(this.markers, marker);
if ((marker.div != null) &&
(marker.div.parentNode == this.div) ) {
this.div.removeChild(marker.div);
}
},
CLASS_NAME: "OpenLayers.Layer.Boxes"
});