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Viewing changes to gis/dhis-gis-geostat/mfbase/openlayers/lib/OpenLayers/Layer/Boxes.js

  • Committer: larshelge at gmail
  • Date: 2009-03-03 16:46:36 UTC
  • Revision ID: larshelge@gmail.com-20090303164636-2sjlrquo7ib1gf7r
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gis/dhis-gis-geostat/mfbase/openlayers/lib/OpenLayers/Layer/Boxes.js
 
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/* Copyright (c) 2006-2008 MetaCarta, Inc., published under the Clear BSD
 
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 * license.  See http://svn.openlayers.org/trunk/openlayers/license.txt for the
 
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 * full text of the license. */
 
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/**
 
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 * @requires OpenLayers/Layer.js
 
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 * @requires OpenLayers/Layer/Markers.js
 
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 */
 
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/**
 
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 * Class: OpenLayers.Layer.Boxes
 
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 * Draw divs as 'boxes' on the layer. 
 
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 *
 
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 * Inherits from:
 
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 *  - <OpenLayers.Layer.Markers>
 
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 */
 
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OpenLayers.Layer.Boxes = OpenLayers.Class(OpenLayers.Layer.Markers, {
 
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    /**
 
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     * Constructor: OpenLayers.Layer.Boxes
 
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     *
 
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     * Parameters:
 
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     * name - {String} 
 
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     * options - {Object} Hashtable of extra options to tag onto the layer
 
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     */
 
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    initialize: function (name, options) {
 
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        OpenLayers.Layer.Markers.prototype.initialize.apply(this, arguments);
 
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    },
 
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    /**
 
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     * Method: drawMarker 
 
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     * Calculate the pixel location for the marker, create it, and
 
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     *    add it to the layer's div
 
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     *
 
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     * Parameters: 
 
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     * marker - {<OpenLayers.Marker.Box>} 
 
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     */
 
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    drawMarker: function(marker) {
 
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        var bounds   = marker.bounds;
 
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        var topleft  = this.map.getLayerPxFromLonLat(
 
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                            new OpenLayers.LonLat(bounds.left,  bounds.top));
 
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        var botright = this.map.getLayerPxFromLonLat(
 
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                             new OpenLayers.LonLat(bounds.right, bounds.bottom));
 
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        if (botright == null || topleft == null) {
 
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            marker.display(false);
 
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        } else {
 
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            var sz = new OpenLayers.Size(
 
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                Math.max(1, botright.x - topleft.x),
 
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                Math.max(1, botright.y - topleft.y));
 
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            var markerDiv = marker.draw(topleft, sz);
 
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            if (!marker.drawn) {
 
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                this.div.appendChild(markerDiv);
 
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                marker.drawn = true;
 
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            }
 
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        }
 
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    },
 
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    /**
 
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     * APIMethod: removeMarker 
 
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     * 
 
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     * Parameters:
 
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     * marker - {<OpenLayers.Marker.Box>} 
 
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     */
 
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    removeMarker: function(marker) {
 
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        OpenLayers.Util.removeItem(this.markers, marker);
 
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        if ((marker.div != null) &&
 
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            (marker.div.parentNode == this.div) ) {
 
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            this.div.removeChild(marker.div);    
 
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        }
 
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    },
 
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    CLASS_NAME: "OpenLayers.Layer.Boxes"
 
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});