@qooxdoo/framework
Version:
The JS Framework for Coders
78 lines (62 loc) • 1.85 kB
JavaScript
/* ************************************************************************
qooxdoo - the new era of web development
http://qooxdoo.org
Copyright:
2014 1&1 Internet AG, Germany, http://www.1und1.de
License:
MIT: https://opensource.org/licenses/MIT
See the LICENSE file in the project's top-level directory for details.
Authors:
* Daniel Wagner (danielwagner)
************************************************************************ */
/**
* Normalization for the pinch gesture.
*
* @require(qx.module.Event)
*
* @group (Event_Normalization)
*/
qx.Bootstrap.define("qx.module.event.Pinch", {
statics :
{
/**
* List of event types to be normalized
*/
TYPES : ["pinch"],
BIND_METHODS : [ "getScale" ],
/**
* Returns the calculated scale of this event.
*
* @return {Float} the scale value of this event.
*/
getScale : function() {
return this._original.scale;
},
/**
* Manipulates the native event object, adding methods if they're not
* already present
*
* @param event {Event} Native event object
* @param element {Element} DOM element the listener was attached to
* @return {Event} Normalized event object
* @internal
*/
normalize : function(event, element)
{
if (!event) {
return event;
}
// apply mouse event normalizations
var bindMethods = qx.module.event.Pinch.BIND_METHODS;
for (var i=0, l=bindMethods.length; i<l; i++) {
if (typeof event[bindMethods[i]] != "function") {
event[bindMethods[i]] = qx.module.event.Pinch[bindMethods[i]].bind(event);
}
}
return event;
}
},
defer : function(statics) {
qxWeb.$registerEventNormalization(qx.module.event.Pinch.TYPES, statics.normalize);
}
});