devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
55 lines (54 loc) • 2.1 kB
JavaScript
/**
* DevExtreme (animation/frame.js)
* Version: 20.1.7
* Build date: Tue Aug 25 2020
*
* Copyright (c) 2012 - 2020 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
var windowUtils = require("../core/utils/window");
var window = windowUtils.hasWindow() ? windowUtils.getWindow() : {};
var callOnce = require("../core/utils/call_once");
var FRAME_ANIMATION_STEP_TIME = 1e3 / 60;
var request = function(callback) {
return setTimeout(callback, FRAME_ANIMATION_STEP_TIME)
};
var cancel = function(requestID) {
clearTimeout(requestID)
};
var setAnimationFrameMethods = callOnce(function() {
var nativeRequest = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame;
var nativeCancel = window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || window.oCancelAnimationFrame || window.msCancelAnimationFrame;
if (nativeRequest && nativeCancel) {
request = nativeRequest;
cancel = nativeCancel
}
if (nativeRequest && !nativeCancel) {
var canceledRequests = {};
request = function(callback) {
var requestId = nativeRequest.call(window, function() {
try {
if (requestId in canceledRequests) {
return
}
callback.apply(this, arguments)
} finally {
delete canceledRequests[requestId]
}
});
return requestId
};
cancel = function(requestId) {
canceledRequests[requestId] = true
}
}
});
exports.requestAnimationFrame = function() {
setAnimationFrameMethods();
return request.apply(window, arguments)
};
exports.cancelAnimationFrame = function() {
setAnimationFrameMethods();
cancel.apply(window, arguments)
};