Jeff Dege contributed a MousePosition Control, which this commit adds to trunk.

Reviewed by Erik on Trac and in person. git-svn-id: http://svn.openlayers.org/trunk/openlayers@1665 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2006-10-06 19:20:23 +00:00
parent 185fd44437
commit 4aef16e1bd
7 changed files with 150 additions and 1 deletions
--- a/lib/OpenLayers/Control/MousePosition.js
+++ b/lib/OpenLayers/Control/MousePosition.js
@@ -0,0 +1,106 @@
+/* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
+ * See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
+ * text of the license. */
+
+/**
+ * @class
+ * 
+ * @requires OpenLayers/Control.js
+ */
+OpenLayers.Control.MousePosition = OpenLayers.Class.create();
+OpenLayers.Control.MousePosition.prototype = 
+  OpenLayers.Class.inherit( OpenLayers.Control, {
+    
+    /** @type DOMElement */
+    element: null,
+    
+    /** @type String */
+    prefix: '',
+    
+    /** @type String */
+    separator: ', ',
+    
+    /** @type String */
+    suffix: '',
+    
+    /** @type int */
+    numdigits: 5,
+    
+    /** @type int */
+    granularity: 1,
+    
+    /** @type OpenLayers.LonLat */
+    lastXy: null,
+    
+    /**
+     * @constructor
+     * 
+     * @param {DOMElement} options Options for control.
+     */
+    initialize: function(options) {
+        OpenLayers.Control.prototype.initialize.apply(this, arguments);
+    },
+
+    /**
+     * @type DOMElement
+     */    
+    draw: function() {
+        OpenLayers.Control.prototype.draw.apply(this, arguments);
+
+        if (!this.element) {
+            this.div.left = "";
+            this.div.top = "";
+            this.div.className = "olControlMousePosition";
+            this.element = this.div;
+        }
+        
+        this.redraw();
+        return this.div;
+    },
+   
+    /**
+     * 
+     */
+    redraw: function(evt) {
+
+        var lonLat;
+
+        if (evt == null) {
+            lonLat = new OpenLayers.LonLat(0, 0);
+        } else {
+            if (this.lastXy == null ||
+                Math.abs(evt.xy.x - this.lastXy.x) > this.granularity ||
+                Math.abs(evt.xy.y - this.lastXy.y) > this.granularity)
+            {
+                this.lastXy = evt.xy;
+                return;
+            }
+
+            lonLat = this.map.getLonLatFromPixel(evt.xy);
+            this.lastXy = evt.xy;
+        }
+        
+        var digits = parseInt(this.numdigits);
+        var newHtml =
+            this.prefix +
+            lonLat.lon.toFixed(digits) +
+            this.separator + 
+            lonLat.lat.toFixed(digits) +
+            this.suffix;
+
+        if (newHtml != this.element.innerHTML) {
+            this.element.innerHTML = newHtml;
+        }
+    },
+
+    /** 
+     *
+     */
+    setMap: function() {
+        OpenLayers.Control.prototype.draw.apply(this, arguments);
+        this.map.events.register( 'mousemove', this, this.mousemove);
+    },     
+    
+    /** @final @type String */
+    CLASS_NAME: "OpenLayers.Control.MousePosition"
+});