a4c86b0489
git-svn-id: http://svn.openlayers.org/tags/openlayers/release-2.3-rc3@2235 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
108 lines
2.5 KiB
JavaScript
108 lines
2.5 KiB
JavaScript
/* Copyright (c) 2006-2007 MetaCarta, Inc., published under the BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/release-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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*
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* @requires OpenLayers/Control.js
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*/
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OpenLayers.Control.MousePosition = OpenLayers.Class.create();
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OpenLayers.Control.MousePosition.prototype =
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OpenLayers.Class.inherit( OpenLayers.Control, {
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/** @type DOMElement */
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element: null,
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/** @type String */
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prefix: '',
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/** @type String */
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separator: ', ',
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/** @type String */
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suffix: '',
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/** @type int */
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numdigits: 5,
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/** @type int */
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granularity: 10,
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/** @type OpenLayers.LonLat */
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lastXy: null,
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/**
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* @constructor
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*
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* @param {DOMElement} options Options for control.
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*/
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initialize: function(options) {
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OpenLayers.Control.prototype.initialize.apply(this, arguments);
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},
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/**
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* @type DOMElement
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*/
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draw: function() {
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OpenLayers.Control.prototype.draw.apply(this, arguments);
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if (!this.element) {
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this.div.left = "";
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this.div.top = "";
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this.div.className = "olControlMousePosition";
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this.element = this.div;
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}
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this.redraw();
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return this.div;
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},
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/**
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*
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*/
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redraw: function(evt) {
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var lonLat;
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if (evt == null) {
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lonLat = new OpenLayers.LonLat(0, 0);
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} else {
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if (this.lastXy == null ||
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Math.abs(evt.xy.x - this.lastXy.x) > this.granularity ||
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Math.abs(evt.xy.y - this.lastXy.y) > this.granularity)
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{
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this.lastXy = evt.xy;
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return;
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}
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lonLat = this.map.getLonLatFromPixel(evt.xy);
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this.lastXy = evt.xy;
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}
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var digits = parseInt(this.numdigits);
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var newHtml =
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this.prefix +
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lonLat.lon.toFixed(digits) +
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this.separator +
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lonLat.lat.toFixed(digits) +
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this.suffix;
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if (newHtml != this.element.innerHTML) {
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this.element.innerHTML = newHtml;
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}
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},
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/**
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*
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*/
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setMap: function() {
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OpenLayers.Control.prototype.setMap.apply(this, arguments);
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this.map.events.register( 'mousemove', this, this.redraw);
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},
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/** @final @type String */
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CLASS_NAME: "OpenLayers.Control.MousePosition"
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});
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