Goyslop/4chan-x
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Polyfill canvas toBlob().

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This commit is contained in:
Mayhem 2013-08-11 13:09:25 +02:00
parent ad96e3488c
commit ffd98de110
2 changed files with 11 additions and 13 deletions
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10
lib/polyfill.coffee
View File

@ -1,6 +1,16 @@
Polyfill = Polyfill =
init: -> init: ->
Polyfill.toBlob()
Polyfill.visibility() Polyfill.visibility()
toBlob: ->
HTMLCanvasElement::toBlob or= (cb) ->
data = atob @toDataURL()[22..]
# DataUrl to Binary code from Aeosynth's 4chan X repo
l = data.length
ui8a = new Uint8Array l
for i in [0...l]
ui8a[i] = data.charCodeAt i
cb new Blob [ui8a], type: 'image/png'
visibility: -> visibility: ->
# page visibility API # page visibility API
return unless 'webkitHidden' of document return unless 'webkitHidden' of document

14
src/Posting/QR.coffee
View File

@ -595,21 +595,9 @@ QR =
cv.width = img.width = width cv.width = img.width = width
cv.getContext('2d').drawImage img, 0, 0, width, height cv.getContext('2d').drawImage img, 0, 0, width, height
URL.revokeObjectURL fileURL URL.revokeObjectURL fileURL
applyBlob = (blob) => cv.toBlob (blob) =>
@URL = URL.createObjectURL blob @URL = URL.createObjectURL blob
@nodes.el.style.backgroundImage = "url(#{@URL})" @nodes.el.style.backgroundImage = "url(#{@URL})"
if cv.toBlob
cv.toBlob applyBlob
return
data = atob cv.toDataURL().split(',')[1]
# DataUrl to Binary code from Aeosynth's 4chan X repo
l = data.length
ui8a = new Uint8Array l
for i in [0...l]
ui8a[i] = data.charCodeAt i
applyBlob new Blob [ui8a], type: 'image/png'
fileURL = URL.createObjectURL @file fileURL = URL.createObjectURL @file
img.src = fileURL img.src = fileURL