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use passive for touch events if possible, fixes #3059

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j 2017-11-06 07:42:51 +02:00
parent b11d6a81fe
commit 0a9c30d1dc
2 changed files with 29 additions and 5 deletions
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14
source/UI/jquery/jquery.mousewheel.js
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@ -20,11 +20,21 @@ if ($.event.fixHooks) {
} }
} }
var supportsPassive = false;
try {
var opts = Object.defineProperty({}, 'passive', {
get: function() {
supportsPassive = true;
}
});
window.addEventListener("test", null, opts);
} catch (e) {}
$.event.special.mousewheel = { $.event.special.mousewheel = {
setup: function() { setup: function() {
if ( this.addEventListener ) { if ( this.addEventListener ) {
for ( var i=types.length; i; ) { for ( var i=types.length; i; ) {
this.addEventListener( types[--i], handler, false ); this.addEventListener( types[--i], handler, supportsPassive ? { passive: true } : false );
} }
} else { } else {
this.onmousewheel = handler; this.onmousewheel = handler;
@ -34,7 +44,7 @@ $.event.special.mousewheel = {
teardown: function() { teardown: function() {
if ( this.removeEventListener ) { if ( this.removeEventListener ) {
for ( var i=types.length; i; ) { for ( var i=types.length; i; ) {
this.removeEventListener( types[--i], handler, false ); this.removeEventListener( types[--i], handler, supportsPassive ? { passive: true } : false );
} }
} else { } else {
this.onmousewheel = null; this.onmousewheel = null;

20
source/UI/js/Core/Element.js
View file

@ -2,6 +2,15 @@
(function(_) { (function(_) {
var noTooltipEvents = {}; var noTooltipEvents = {};
var supportsPassive = false;
try {
var opts = Object.defineProperty({}, 'passive', {
get: function() {
supportsPassive = true;
}
});
window.addEventListener("test", null, opts);
} catch (e) {}
/*@ /*@
Ox.Element <f> Basic UI element object Ox.Element <f> Basic UI element object
@ -128,10 +137,15 @@
.on({ .on({
mousedown: onMousedown, mousedown: onMousedown,
mousewheel: onMousewheel, mousewheel: onMousewheel,
touchend: onTouchend, //touchend: onTouchend,
touchmove: onTouchmove, //touchmove: onTouchmove,
touchstart: onTouchstart //touchstart: onTouchstart
}); });
that.$element[0].addEventListener('touchend', onTouchend, supportsPassive ? { passive: true } : false );
that.$element[0].addEventListener('touchmove', onTouchmove, supportsPassive ? { passive: true } : false );
that.$element[0].addEventListener('touchstart', onTouchstart, supportsPassive ? { passive: true } : false );
that[0] = that.$element[0]; that[0] = that.$element[0];
that.length = 1; that.length = 1;
that.self = function _self() { that.self = function _self() {