Files
openlayers/lib/OpenLayers/Control/Scale.js
crschmidt f505542fbe "The Permalink control passes an element as the first parameter, however, the
initialize.apply is called with the arguments object, which causes an error if
an element is passed into the control." Also applied to Scale. Now fixed
with review from e-dog. (Closes #978) Fixes the only problem I found with 
migrating the Boston freemap to 2.5.


git-svn-id: http://svn.openlayers.org/trunk/openlayers@4333 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2007-09-16 15:59:11 +00:00

74 lines
1.9 KiB
JavaScript

/* Copyright (c) 2006-2007 MetaCarta, Inc., published under a modified BSD license.
* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
* for the full text of the license. */
/**
* @requires OpenLayers/Control.js
*
* Class: OpenLayers.Control.Scale
* Display a small scale indicator on the map.
* Inherits from:
* - <OpenLayers.Control>
*/
OpenLayers.Control.Scale = OpenLayers.Class(OpenLayers.Control, {
/**
* Parameter: element
* {DOMElement}
*/
element: null,
/**
* Constructor: OpenLayers.Control.Scale
*
* Parameters:
* element - {DOMElement}
* options - {Object}
*/
initialize: function(element, options) {
OpenLayers.Control.prototype.initialize.apply(this, [options]);
this.element = OpenLayers.Util.getElement(element);
},
/**
* Method: draw
*
* Returns:
* {DOMElemen}
*/
draw: function() {
OpenLayers.Control.prototype.draw.apply(this, arguments);
if (!this.element) {
this.element = document.createElement("div");
this.div.className = this.displayClass;
this.element.style.fontSize="smaller";
this.div.appendChild(this.element);
}
this.map.events.register( 'moveend', this, this.updateScale);
this.updateScale();
return this.div;
},
/**
* Method: updateScale
*/
updateScale: function() {
var scale = this.map.getScale();
if (!scale) return;
if (scale >= 9500 && scale <= 950000) {
scale = Math.round(scale / 1000) + "K";
} else if (scale >= 950000) {
scale = Math.round(scale / 1000000) + "M";
} else {
scale = Math.round(scale);
}
this.element.innerHTML = "Scale = 1 : " + scale;
},
CLASS_NAME: "OpenLayers.Control.Scale"
});