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Add in a test, rescale preview images

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This commit is contained in:
Vik Paruchuri
2013-04-16 10:51:23 -04:00
parent 9acc592279
commit 0d4b9d26cf
2 changed files with 27 additions and 2 deletions
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19
common/lib/xmodule/xmodule/js/src/combinedopenended/display.coffee
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@@ -553,10 +553,27 @@ class @CombinedOpenEnded
target_selection = $(event.target).val()
Logger.log 'oe_feedback_response_selected', {value: target_selection}
remove_attribute: (name) =>
if $('.file-upload-preview').attr(name)
$('.file-upload-preview')[0].removeAttribute(name)
preview_image: () =>
if $('.file-upload-box')[0].files && $('.file-upload-box')[0].files[0]
reader = new FileReader()
reader.onload = (e) =>
$('.file-upload-preview').attr('src', e.target.result).width(150).height(150)
max_dim = 150
@remove_attribute('src')
@remove_attribute('height')
@remove_attribute('width')
$('.file-upload-preview').attr('src', e.target.result)
height_px = $('.file-upload-preview')[0].height
width_px = $('.file-upload-preview')[0].width
scale_factor = 0
if height_px>width_px
scale_factor = height_px/max_dim
else
scale_factor = width_px/max_dim
$('.file-upload-preview')[0].width = width_px/scale_factor
$('.file-upload-preview')[0].height = height_px/scale_factor
$('.file-upload-preview').show()
reader.readAsDataURL($('.file-upload-box')[0].files[0])