186 lines
4.5 KiB
JavaScript
186 lines
4.5 KiB
JavaScript
goog.provide('ol.DeviceOrientation');
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goog.provide('ol.DeviceOrientation.SUPPORTED');
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goog.provide('ol.DeviceOrientationProperty');
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goog.require('goog.events');
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goog.require('goog.math');
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goog.require('ol.Object');
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/**
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* @enum {string}
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*/
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ol.DeviceOrientationProperty = {
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ALPHA: 'alpha',
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BETA: 'beta',
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GAMMA: 'gamma',
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HEADING: 'heading',
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TRACKING: 'tracking'
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};
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/**
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* @constructor
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* @extends {ol.Object}
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* @param {ol.DeviceOrientationOptions=} opt_options Options.
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*/
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ol.DeviceOrientation = function(opt_options) {
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goog.base(this);
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var options = goog.isDef(opt_options) ? opt_options : {};
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/**
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* @private
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* @type {?number}
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*/
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this.listenerKey_ = null;
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goog.events.listen(this,
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ol.Object.getChangeEventType(ol.DeviceOrientationProperty.TRACKING),
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this.handleTrackingChanged_, false, this);
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this.setTracking(goog.isDef(options.tracking) ? options.tracking : false);
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};
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goog.inherits(ol.DeviceOrientation, ol.Object);
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/**
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* @inheritDoc
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*/
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ol.DeviceOrientation.prototype.disposeInternal = function() {
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this.setTracking(false);
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goog.base(this, 'disposeInternal');
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};
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/**
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* Is supported.
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* @const
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* @type {boolean}
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*/
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ol.DeviceOrientation.SUPPORTED = 'DeviceOrientationEvent' in window;
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/**
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* @private
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* @param {goog.events.BrowserEvent} browserEvent Event.
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*/
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ol.DeviceOrientation.prototype.orientationChange_ = function(browserEvent) {
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var event = /** @type {DeviceOrientationEvent} */
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(browserEvent.getBrowserEvent());
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if (goog.isDefAndNotNull(event.alpha)) {
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var alpha = goog.math.toRadians(event.alpha);
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this.set(ol.DeviceOrientationProperty.ALPHA, alpha);
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// event.absolute is undefined in iOS.
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if (goog.isBoolean(event.absolute) && event.absolute) {
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this.set(ol.DeviceOrientationProperty.HEADING, alpha);
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}
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}
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if (goog.isDefAndNotNull(event.beta)) {
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this.set(ol.DeviceOrientationProperty.BETA,
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goog.math.toRadians(event.beta));
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}
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if (goog.isDefAndNotNull(event.gamma)) {
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this.set(ol.DeviceOrientationProperty.GAMMA,
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goog.math.toRadians(event.gamma));
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}
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};
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/**
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* @return {number|undefined} alpha.
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*/
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ol.DeviceOrientation.prototype.getAlpha = function() {
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return /** @type {number|undefined} */ (
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this.get(ol.DeviceOrientationProperty.ALPHA));
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'getAlpha',
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ol.DeviceOrientation.prototype.getAlpha);
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/**
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* @return {number|undefined} beta.
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*/
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ol.DeviceOrientation.prototype.getBeta = function() {
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return /** @type {number|undefined} */ (
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this.get(ol.DeviceOrientationProperty.BETA));
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'getBeta',
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ol.DeviceOrientation.prototype.getBeta);
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/**
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* @return {number|undefined} gamma.
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*/
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ol.DeviceOrientation.prototype.getGamma = function() {
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return /** @type {number|undefined} */ (
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this.get(ol.DeviceOrientationProperty.GAMMA));
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'getGamma',
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ol.DeviceOrientation.prototype.getGamma);
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/**
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* @return {number|undefined} heading.
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*/
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ol.DeviceOrientation.prototype.getHeading = function() {
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return /** @type {number|undefined} */ (
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this.get(ol.DeviceOrientationProperty.HEADING));
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'getHeading',
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ol.DeviceOrientation.prototype.getHeading);
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/**
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* Are we tracking the device's orientation?
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* @return {boolean} tracking.
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*/
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ol.DeviceOrientation.prototype.getTracking = function() {
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return /** @type {boolean} */ (
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this.get(ol.DeviceOrientationProperty.TRACKING));
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'getTracking',
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ol.DeviceOrientation.prototype.getTracking);
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/**
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* @private
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*/
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ol.DeviceOrientation.prototype.handleTrackingChanged_ = function() {
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if (ol.DeviceOrientation.SUPPORTED) {
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var tracking = this.getTracking();
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if (tracking && goog.isNull(this.listenerKey_)) {
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this.listenerKey_ = goog.events.listen(window, 'deviceorientation',
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this.orientationChange_, false, this);
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} else if (!tracking && !goog.isNull(this.listenerKey_)) {
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goog.events.unlistenByKey(this.listenerKey_);
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this.listenerKey_ = null;
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}
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}
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};
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/**
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* @param {boolean} tracking Enable or disable tracking.
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*/
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ol.DeviceOrientation.prototype.setTracking = function(tracking) {
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this.set(ol.DeviceOrientationProperty.TRACKING, tracking);
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};
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goog.exportProperty(
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ol.DeviceOrientation.prototype,
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'setTracking',
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ol.DeviceOrientation.prototype.setTracking);
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