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Merge pull request #770 from metamaps/feature/remove-canvas-function

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remove check-canvas-support.js
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Devin Howard 2016-10-17 13:40:34 +08:00 committed by GitHub
parent c0955d7c5e 179849b639
commit b976c13db2
1 changed files with 0 additions and 15 deletions
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15
app/assets/javascripts/src/check-canvas-support.js
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@ -1,15 +0,0 @@
// TODO document this user agent function
var labelType, useGradients, nativeTextSupport, animate
;(function () {
var ua = navigator.userAgent,
iStuff = ua.match(/iPhone/i) || ua.match(/iPad/i),
typeOfCanvas = typeof HTMLCanvasElement,
nativeCanvasSupport = (typeOfCanvas == 'object' || typeOfCanvas == 'function'),
textSupport = nativeCanvasSupport && (typeof document.createElement('canvas').getContext('2d').fillText == 'function')
// I'm setting this based on the fact that ExCanvas provides text support for IE
// and that as of today iPhone/iPad current text support is lame
labelType = (!nativeCanvasSupport || (textSupport && !iStuff)) ? 'Native' : 'HTML'
nativeTextSupport = labelType == 'Native'
useGradients = nativeCanvasSupport
animate = !(iStuff || !nativeCanvasSupport)
})()