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class ImageFile
# Width where images must fits in, for 2-up this gets divided by 2
@availWidth = 900
@viewModes = ['two-up', 'swipe']
constructor: (@file) ->
# Determine if old and new file has same dimensions, if not show 'two-up' view
this.requestImageInfo $('.two-up.view .frame.deleted img', @file), (deletedWidth, deletedHeight) =>
this.requestImageInfo $('.two-up.view .frame.added img', @file), (width, height) =>
if width == deletedWidth && height == deletedHeight
this.initViewModes()
else
this.initView('two-up')
initViewModes: ->
viewMode = ImageFile.viewModes[0]
$('.view-modes', @file).removeClass 'hide'
$('.view-modes-menu', @file).on 'click', 'li', (event) =>
unless $(event.currentTarget).hasClass('active')
this.activateViewMode(event.currentTarget.className)
this.activateViewMode(viewMode)
activateViewMode: (viewMode) ->
$('.view-modes-menu li', @file)
.removeClass('active')
.filter(".#{viewMode}").addClass 'active'
$(".view:visible:not(.#{viewMode})", @file).fadeOut 200, =>
$(".view.#{viewMode}", @file).fadeIn(200)
this.initView viewMode
initView: (viewMode) ->
this.views[viewMode].call(this)
prepareFrames = (view) ->
maxWidth = 0
maxHeight = 0
$('.frame', view).each (index, frame) =>
width = $(frame).width()
height = $(frame).height()
maxWidth = if width > maxWidth then width else maxWidth
maxHeight = if height > maxHeight then height else maxHeight
.css
width: maxWidth
height: maxHeight
[maxWidth, maxHeight]
views:
'two-up': ->
$('.two-up.view .wrap', @file).each (index, wrap) =>
$('img', wrap).each ->
currentWidth = $(this).width()
if currentWidth > ImageFile.availWidth / 2
$(this).width ImageFile.availWidth / 2
this.requestImageInfo $('img', wrap), (width, height) ->
$('.image-info .meta-width', wrap).text "#{width}px"
$('.image-info .meta-height', wrap).text "#{height}px"
$('.image-info', wrap).removeClass('hide')
'swipe': ->
maxWidth = 0
maxHeight = 0
$('.swipe.view', @file).each (index, view) =>
[maxWidth, maxHeight] = prepareFrames(view)
$('.swipe-frame', view).css
width: maxWidth + 16
height: maxHeight + 28
$('.swipe-wrap', view).css
width: maxWidth + 1
height: maxHeight + 2
$('.swipe-bar', view).css
left: 0
.draggable
axis: 'x'
containment: 'parent'
drag: (event) ->
$('.swipe-wrap', view).width (maxWidth + 1) - $(this).position().left
stop: (event) ->
$('.swipe-wrap', view).width (maxWidth + 1) - $(this).position().left
'onion-skin': ->
maxWidth = 0
maxHeight = 0
dragTrackWidth = $('.drag-track', @file).width() - $('.dragger', @file).width()
$('.onion-skin.view', @file).each (index, view) =>
[maxWidth, maxHeight] = prepareFrames(view)
$('.onion-skin-frame', view).css
width: maxWidth + 16
height: maxHeight + 28
$('.swipe-wrap', view).css
width: maxWidth + 1
height: maxHeight + 2
$('.dragger', view).css
left: dragTrackWidth
.draggable
axis: 'x'
containment: 'parent'
drag: (event) ->
$('.frame.added', view).css('opacity', $(this).position().left / dragTrackWidth)
stop: (event) ->
$('.frame.added', view).css('opacity', $(this).position().left / dragTrackWidth)
requestImageInfo: (img, callback) ->
domImg = img.get(0)
if domImg.complete
callback.call(this, domImg.naturalWidth, domImg.naturalHeight)
else
img.on 'load', =>
callback.call(this, domImg.naturalWidth, domImg.naturalHeight)
@ImageFile = ImageFile
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