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Retrospring
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Non-blocking image load

This commit is contained in:
Yuki 2015-05-11 11:28:24 +05:30
parent 884dab5988
commit 7d2f1b1594
1 changed files with 26 additions and 12 deletions
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38
app/assets/javascripts/settings.coffee
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@ -4,15 +4,28 @@
evt.preventDefault() evt.preventDefault()
$("button[data-target=#modal-passwd]").trigger 'click' $("button[data-target=#modal-passwd]").trigger 'click'
readImage = (file, callback) ->
fr = new FileReader()
fr.addEventListener "load", (e) ->
callback e.target.result
fr.readAsBinaryString file
freeURL = () ->
if window.URL? or window.webkitURL?
readImage = (file, callback) ->
callback (window.URL || window.webkitURL).createObjectURL file
freeURL = (url) ->
URL.revokeObjectURL url
# Profile pic # Profile pic
($ document).on 'change', 'input#user_profile_picture[type=file]', -> ($ document).on 'change', 'input#user_profile_picture[type=file]', ->
input = ($ this)[0] input = this
($ '#profile-picture-crop-controls').slideUp 400, -> ($ '#profile-picture-crop-controls').slideUp 400, ->
if input.files and input.files[0] if input.files and input.files[0]
fr = new FileReader() readImage input.files[0], (src) ->
($ fr).on 'load', (e) ->
cropper = ($ '#profile-picture-cropper') cropper = ($ '#profile-picture-cropper')
preview = ($ '#profile-picture-preview') preview = ($ '#profile-picture-preview')
@ -30,6 +43,9 @@
# marginTop: '-' + Math.round(ry * data.y) + 'px' # marginTop: '-' + Math.round(ry * data.y) + 'px'
cropper.on 'load', -> cropper.on 'load', ->
if ({}.toString).call(src) == "[object URL]"
freeURL src
side = if cropper[0].naturalWidth > cropper[0].naturalHeight side = if cropper[0].naturalWidth > cropper[0].naturalHeight
cropper[0].naturalHeight cropper[0].naturalHeight
else else
@ -48,17 +64,14 @@
($ '#profile-picture-crop-controls')[0].dataset.bound = true ($ '#profile-picture-crop-controls')[0].dataset.bound = true
($ '#profile-picture-crop-controls').slideDown() ($ '#profile-picture-crop-controls').slideDown()
cropper.attr 'src', e.target.result cropper.attr 'src', src
fr.readAsDataURL(input.files[0])
($ document).on 'change', 'input#user_profile_header[type=file]', -> ($ document).on 'change', 'input#user_profile_header[type=file]', ->
input = ($ this)[0] input = this
($ '#profile-header-crop-controls').slideUp 400, -> ($ '#profile-header-crop-controls').slideUp 400, ->
if input.files and input.files[0] if input.files and input.files[0]
fr = new FileReader() readImage input.files[0], (src) ->
($ fr).on 'load', (e) ->
cropper = ($ '#profile-header-cropper') cropper = ($ '#profile-header-cropper')
preview = ($ '#profile-header-preview') preview = ($ '#profile-header-preview')
@ -69,6 +82,9 @@
($ '#crop_h_h').val Math.floor(data.h / data.scale) ($ '#crop_h_h').val Math.floor(data.h / data.scale)
cropper.on 'load', -> cropper.on 'load', ->
if ({}.toString).call(src) == "[object URL]"
freeURL src
cropper.guillotine cropper.guillotine
width: 1500 width: 1500
height: 350 height: 350
@ -82,6 +98,4 @@
($ '#profile-header-crop-controls')[0].dataset.bound = true ($ '#profile-header-crop-controls')[0].dataset.bound = true
($ '#profile-header-crop-controls').slideDown() ($ '#profile-header-crop-controls').slideDown()
cropper.attr 'src', e.target.result cropper.attr 'src', src
fr.readAsDataURL(input.files[0])