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always use css transforms for presentation scaling (zoom has too many quirks even if it is slightly sharper on ldpi displays)

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hakimel
2022-03-31 11:19:55 +02:00
parent 918ee5610a
commit e281b3234e
6 changed files with 13 additions and 37 deletions
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9
js/utils/device.js
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@ -1,15 +1,8 @@
const UA = navigator.userAgent;
const testElement = document.createElement( 'div' );
export const isMobile = /(iphone|ipod|ipad|android)/gi.test( UA ) ||
( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS
export const isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
export const isAndroid = /android/gi.test( UA );
// Flags if we should use zoom instead of transform to scale
// up slides. Zoom produces crisper results but has a lot of
// xbrowser quirks so we only use it in whitelisted browsers.
export const supportsZoom = 'zoom' in testElement.style && !isMobile &&
( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) );
export const isAndroid = /android/gi.test( UA );