47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
/**
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* @module ol/has
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*/
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const ua = typeof navigator !== 'undefined' ?
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navigator.userAgent.toLowerCase() : '';
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/**
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* User agent string says we are dealing with Firefox as browser.
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* @type {boolean}
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*/
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export const FIREFOX = ua.indexOf('firefox') !== -1;
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/**
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* User agent string says we are dealing with Safari as browser.
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* @type {boolean}
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*/
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export const SAFARI = ua.indexOf('safari') !== -1 && ua.indexOf('chrom') == -1;
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/**
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* User agent string says we are dealing with a WebKit engine.
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* @type {boolean}
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*/
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export const WEBKIT = ua.indexOf('webkit') !== -1 && ua.indexOf('edge') == -1;
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/**
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* User agent string says we are dealing with a Mac as platform.
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* @type {boolean}
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*/
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export const MAC = ua.indexOf('macintosh') !== -1;
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/**
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* The ratio between physical pixels and device-independent pixels
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* (dips) on the device (`window.devicePixelRatio`).
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* @const
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* @type {number}
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* @api
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*/
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export const DEVICE_PIXEL_RATIO = window.devicePixelRatio || 1;
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/**
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* Image.prototype.decode() is supported.
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* @type {boolean}
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*/
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export const IMAGE_DECODE = typeof Image !== 'undefined' && Image.prototype.decode;
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