62 lines
1.6 KiB
JavaScript
62 lines
1.6 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @typechecks
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*/
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'use strict';
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var BrowserSupportCore = require("./BrowserSupportCore");
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var getVendorPrefixedName = require("./getVendorPrefixedName");
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var TRANSFORM = getVendorPrefixedName('transform');
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var BACKFACE_VISIBILITY = getVendorPrefixedName('backfaceVisibility');
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var translateDOMPositionXY = function () {
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if (BrowserSupportCore.hasCSSTransforms()) {
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var ua = global.window ? global.window.navigator.userAgent : 'UNKNOWN';
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var isSafari = /Safari\//.test(ua) && !/Chrome\//.test(ua); // It appears that Safari messes up the composition order
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// of GPU-accelerated layers
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// (see bug https://bugs.webkit.org/show_bug.cgi?id=61824).
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// Use 2D translation instead.
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if (!isSafari && BrowserSupportCore.hasCSS3DTransforms()) {
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return function (
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/*object*/
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style,
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/*number*/
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x,
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/*number*/
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y) {
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style[TRANSFORM] = 'translate3d(' + x + 'px,' + y + 'px,0)';
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style[BACKFACE_VISIBILITY] = 'hidden';
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};
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} else {
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return function (
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/*object*/
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style,
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/*number*/
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x,
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/*number*/
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y) {
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style[TRANSFORM] = 'translate(' + x + 'px,' + y + 'px)';
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};
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}
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} else {
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return function (
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/*object*/
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style,
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/*number*/
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x,
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/*number*/
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y) {
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style.left = x + 'px';
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style.top = y + 'px';
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};
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}
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}();
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module.exports = translateDOMPositionXY; |