16 lines
548 B
CoffeeScript
16 lines
548 B
CoffeeScript
Polyfill =
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init: ->
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@toBlob()
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toBlob: ->
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return if HTMLCanvasElement::toBlob
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HTMLCanvasElement::toBlob = (cb, type='image/png', encoderOptions) ->
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url = @toDataURL type, encoderOptions
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data = atob url[url.indexOf(',')+1..]
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# DataUrl to Binary code from Aeosynth's 4chan X repo
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l = data.length
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ui8a = new Uint8Array l
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for i in [0...l] by 1
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ui8a[i] = data.charCodeAt i
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cb new Blob [ui8a], {type}
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$.globalEval "HTMLCanvasElement.prototype.toBlob = (#{HTMLCanvasElement::toBlob});"
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