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Handle projection change in ol.Geolocation

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This commit is contained in:
Frederic Junod
2013-02-04 09:46:31 +01:00
parent 38f245c5c8
commit 6675de437f
1 changed files with 29 additions and 7 deletions
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36
src/ol/geolocation.js
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@@ -3,6 +3,7 @@
goog.provide('ol.Geolocation');
goog.provide('ol.GeolocationProperty');
goog.require('goog.functions');
goog.require('ol.Coordinate');
goog.require('ol.Object');
goog.require('ol.Projection');
@@ -28,8 +29,16 @@ ol.Geolocation = function(opt_positionOptions) {
goog.base(this);
// set the default projection
this.setProjection(ol.Projection.getFromCode('EPSG:4326'));
/**
* The unprojected (EPSG:4326) device position.
* @private
* @type {ol.Coordinate}
*/
this.position_ = null;
goog.events.listen(
this, ol.Object.getChangedEventType(ol.GeolocationProperty.PROJECTION),
this.handleProjectionChanged, false, this);
/**
* @private
@@ -52,14 +61,28 @@ ol.Geolocation.prototype.disposeInternal = function() {
};
/**
* @protected
*/
ol.Geolocation.prototype.handleProjectionChanged = function() {
this.transformCoords_ = ol.Projection.getTransform(
ol.Projection.getFromCode('EPSG:4326'), this.getProjection());
if (!goog.isNull(this.position_)) {
this.set(ol.GeolocationProperty.POSITION,
this.transformCoords_(this.position_));
}
};
/**
* @private
* @param {GeolocationPosition} position position event.
*/
ol.Geolocation.prototype.positionChange_ = function(position) {
var coords = position.coords;
var coord = new ol.Coordinate(coords.longitude, coords.latitude);
this.set(ol.GeolocationProperty.POSITION, this.transformCoords_(coord));
this.position_ = new ol.Coordinate(coords.longitude, coords.latitude);
this.set(ol.GeolocationProperty.POSITION,
this.transformCoords_(this.position_));
this.set(ol.GeolocationProperty.ACCURACY, coords.accuracy);
};
@@ -118,9 +141,6 @@ goog.exportProperty(
*/
ol.Geolocation.prototype.setProjection = function(projection) {
this.set(ol.GeolocationProperty.PROJECTION, projection);
this.transformCoords_ = ol.Projection.getTransform(
ol.Projection.getFromCode('EPSG:4326'), projection);
};
goog.exportProperty(
ol.Geolocation.prototype,
@@ -130,5 +150,7 @@ goog.exportProperty(
/**
* @private
* @param {ol.Coordinate} coordinate Coordinate.
* @return {ol.Coordinate} Coordinate.
*/
ol.Geolocation.prototype.transformCoords_ = goog.functions.identity;