8e3856b4ac
events. This removes a number of minor memory leaks with creating/destroying popups, layers, features, and markers. git-svn-id: http://svn.openlayers.org/trunk/openlayers@2894 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
143 lines
3.5 KiB
JavaScript
143 lines
3.5 KiB
JavaScript
/* Copyright (c) 2006 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the full text of the license. */
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/**
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* @class
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* @requires OpenLayers/Events.js
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* @requires OpenLayers/Icon.js
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*/
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OpenLayers.Marker = OpenLayers.Class.create();
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OpenLayers.Marker.prototype = {
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/** @type OpenLayers.Icon */
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icon: null,
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/** location of object
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* @type OpenLayers.LonLat */
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lonlat: null,
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/** @type OpenLayers.Events*/
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events: null,
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/** @type OpenLayers.Map */
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map: null,
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/**
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* @constructor
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*
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* @param {OpenLayers.Icon} icon
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* @param {OpenLayers.LonLat lonlat
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*/
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initialize: function(lonlat, icon) {
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this.lonlat = lonlat;
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var newIcon = (icon) ? icon : OpenLayers.Marker.defaultIcon();
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if (this.icon == null) {
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this.icon = newIcon;
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} else {
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this.icon.url = newIcon.url;
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this.icon.size = newIcon.size;
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this.icon.offset = newIcon.offset;
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this.icon.calculateOffset = newIcon.calculateOffset;
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}
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this.events = new OpenLayers.Events(this, this.icon.imageDiv, null);
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},
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destroy: function() {
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this.map = null;
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this.events.destroy();
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this.events = null;
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if (this.icon != null) {
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this.icon.destroy();
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this.icon = null;
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}
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},
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/**
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* @param {OpenLayers.Pixel} px
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*
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* @return A new DOM Image with this marker´s icon set at the
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* location passed-in
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* @type DOMElement
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*/
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draw: function(px) {
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return this.icon.draw(px);
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},
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/**
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* @param {OpenLayers.Pixel} px
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*/
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moveTo: function (px) {
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if ((px != null) && (this.icon != null)) {
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this.icon.moveTo(px);
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}
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this.lonlat = this.map.getLonLatFromLayerPx(px);
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},
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/**
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* @returns Whether or not the marker is currently visible on screen.
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* @type Boolean
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*/
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onScreen:function() {
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var onScreen = false;
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if (this.map) {
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var screenBounds = this.map.getExtent();
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onScreen = screenBounds.containsLonLat(this.lonlat);
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}
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return onScreen;
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},
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/**
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* @param {float} inflate
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*/
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inflate: function(inflate) {
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if (this.icon) {
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var newSize = new OpenLayers.Size(this.icon.size.w * inflate,
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this.icon.size.h * inflate);
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this.icon.setSize(newSize);
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}
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},
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/** Change the opacity of the marker by changin the opacity of
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* its icon
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*
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* @param {float} opacity Specified as fraction (0.4, etc)
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*/
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setOpacity: function(opacity) {
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this.icon.setOpacity(opacity);
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},
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/** Hide or show the icon
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*
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* @param {Boolean} display
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*/
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display: function(display) {
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this.icon.display(display);
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Marker"
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};
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/**
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* @returns A default OpenLayers.Icon to use for a marker
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* @type OpenLayers.Icon
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*/
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OpenLayers.Marker.defaultIcon = function() {
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var url = OpenLayers.Util.getImagesLocation() + "marker.png";
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var size = new OpenLayers.Size(21, 25);
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var calculateOffset = function(size) {
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return new OpenLayers.Pixel(-(size.w/2), -size.h);
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};
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return new OpenLayers.Icon(url, size, null, calculateOffset);
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};
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