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fix for #182 and #262 -- pick the best new resolution when changing baselayers, instead of just using the same index into the resolutions array.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@1581 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
euzuro
2006-10-05 05:06:33 +00:00
parent abde2fbc23
commit 1414f0f656
1 changed files with 6 additions and 9 deletions
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15
lib/OpenLayers/Map.js
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@@ -350,15 +350,16 @@ OpenLayers.Map.prototype = {
* @param {Boolean} noEvent * @param {Boolean} noEvent
*/ */
setBaseLayer: function(newBaseLayer, noEvent) { setBaseLayer: function(newBaseLayer, noEvent) {
var oldBaseLayer = this.baseLayer;
if (newBaseLayer != this.baseLayer) { if (newBaseLayer != oldBaseLayer) {
// is newBaseLayer an already loaded layer? // is newBaseLayer an already loaded layer?
if (this.layers.indexOf(newBaseLayer) != -1) { if (this.layers.indexOf(newBaseLayer) != -1) {
// make the old base layer invisible // make the old base layer invisible
if (this.baseLayer != null) { if (oldBaseLayer != null) {
this.baseLayer.setVisibility(false, noEvent); oldBaseLayer.setVisibility(false, noEvent);
} }
// set new baselayer and make it visible // set new baselayer and make it visible
@@ -368,13 +369,9 @@ OpenLayers.Map.prototype = {
//redraw all layers //redraw all layers
var center = this.getCenter(); var center = this.getCenter();
if (center != null) { if (center != null) {
var zoom = this.getZoom(); var oldResolution = oldBaseLayer.getResolution();
this.zoom = null; var zoom = this.baseLayer.getZoomForResolution(oldResolution);
if (zoom > this.baseLayer.numZoomLevels - 1) {
zoom = this.baseLayer.numZoomLevels - 1;
}
this.setCenter(center, zoom); this.setCenter(center, zoom);
} }
if ((noEvent == null) || (noEvent == false)) { if ((noEvent == null) || (noEvent == false)) {
this.events.triggerEvent("changebaselayer"); this.events.triggerEvent("changebaselayer");