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Only consider touch events to compute ol.interaction.Touch.targetTouches

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This commit is contained in:
Frederic Junod
2013-08-28 10:40:47 +02:00
parent 2b5e0c2c31
commit 77f6b4ff59
1 changed files with 30 additions and 10 deletions
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40
src/ol/interaction/touchinteraction.js
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@@ -1,6 +1,7 @@
goog.provide('ol.interaction.Touch');
goog.require('goog.asserts');
goog.require('goog.functions');
goog.require('goog.object');
goog.require('ol.MapBrowserEvent');
@@ -57,24 +58,43 @@ ol.interaction.Touch.centroid = function(touches) {
};
/**
* @param {ol.MapBrowserEvent} mapBrowserEvent Event.
* @return {boolean} Whether the event is a touchstart, touchmove
* or touchend event.
* @private
*/
ol.interaction.Touch.isTouchEvent_ = function(mapBrowserEvent) {
var type = mapBrowserEvent.type;
return (
type === ol.MapBrowserEvent.EventType.TOUCHSTART ||
type === ol.MapBrowserEvent.EventType.TOUCHMOVE ||
type === ol.MapBrowserEvent.EventType.TOUCHEND);
};
/**
* @param {ol.MapBrowserEvent} mapBrowserEvent Event.
* @private
*/
ol.interaction.Touch.prototype.updateTrackedTouches_ =
function(mapBrowserEvent) {
var event = mapBrowserEvent.browserEvent.getBrowserEvent();
if (goog.isDef(event.targetTouches)) {
// W3C touch events
this.targetTouches = event.targetTouches;
} else {
// IE pointer event
if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.TOUCHEND) {
delete this.trackedTouches_[event.pointerId];
if (ol.interaction.Touch.isTouchEvent_(mapBrowserEvent)) {
var event = mapBrowserEvent.browserEvent.getBrowserEvent();
if (goog.isDef(event.targetTouches)) {
// W3C touch events
this.targetTouches = event.targetTouches;
} else if (goog.isDef(event.pointerId)) {
// IE pointer event
if (mapBrowserEvent.type == ol.MapBrowserEvent.EventType.TOUCHEND) {
delete this.trackedTouches_[event.pointerId];
} else {
this.trackedTouches_[event.pointerId] = event;
}
this.targetTouches = goog.object.getValues(this.trackedTouches_);
} else {
this.trackedTouches_[event.pointerId] = event;
goog.asserts.fail('unknown touch event model');
}
this.targetTouches = goog.object.getValues(this.trackedTouches_);
}
};