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Fix the event listener leak, which has been a serious problem when large numbers of markers etc. are created. Closes #510.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@2867 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
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Schuyler Erle
2007-03-23 14:22:38 +00:00
parent 803e8b9dbd
commit f99d1ce7b0
3 changed files with 115 additions and 12 deletions
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23
lib/OpenLayers/Control/Navigation.js
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@@ -59,20 +59,35 @@ OpenLayers.Control.Navigation.prototype =
return false;
},
wheelChange: function(evt, deltaZ) {
console.log("wheel " + deltaZ);
var newZoom = this.map.getZoom() + deltaZ;
if (!this.map.isValidZoomLevel(newZoom)) return;
var size = this.map.getSize();
var deltaX = size.w/2 - evt.xy.x;
var deltaY = size.h/2 - evt.xy.y;
var newRes = map.baseLayer.resolutions[newZoom];
var zoomPoint = this.map.getLonLatFromPixel(evt.xy);
var newCenter = new OpenLayers.LonLat(
zoomPoint.lon + deltaX * newRes,
zoomPoint.lat - deltaY * newRes );
console.log(newCenter.toString());
this.map.setCenter( newCenter, newZoom );
},
/** User spun scroll wheel up
*
*/
wheelUp: function(evt) {
this.map.setCenter(this.map.getLonLatFromPixel(evt.xy),
this.map.getZoom() + 1);
this.wheelChange(evt, 1);
},
/** User spun scroll wheel down
*
*/
wheelDown: function(evt) {
this.map.setCenter(this.map.getLonLatFromPixel(evt.xy),
this.map.getZoom() - 1);
this.wheelChange(evt, -1);
},
/** @final @type String */