80 lines
2.8 KiB
CoffeeScript
Executable File
80 lines
2.8 KiB
CoffeeScript
Executable File
ImageLoader =
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init: ->
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return if g.VIEW is 'catalog'
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return unless Conf['Image Prefetching'] or Conf['Replace JPG'] or Conf['Replace PNG'] or Conf['Replace GIF'] or Conf['Replace WEBM']
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Post.callbacks.push
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name: 'Image Replace'
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cb: @node
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$.on d, 'PostsInserted', ->
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g.posts.forEach ImageLoader.prefetch
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if Conf['Replace WEBM']
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$.on d, 'scroll visibilitychange 4chanXInitFinished PostsInserted', ->
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# Special case: Quote previews are off screen when inserted into document, but quickly moved on screen.
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qpClone = $.id('qp')?.firstElementChild
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g.posts.forEach (post) ->
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for post in [post, post.clones...] when post.file?.videoThumb
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{thumb} = post.file
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if Header.isNodeVisible(thumb) or post.nodes.root is qpClone then thumb.play() else thumb.pause()
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return
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return unless Conf['Image Prefetching']
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prefetch = $.el 'label',
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<%= html('<input type="checkbox" name="prefetch"> Prefetch Images') %>
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@el = prefetch.firstElementChild
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$.on @el, 'change', ->
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if Conf['prefetch'] = @checked
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g.posts.forEach ImageLoader.prefetch
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Header.menu.addEntry
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el: prefetch
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order: 104
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node: ->
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return if @isClone or !@file
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ImageLoader.replaceVideo @ if Conf['Replace WEBM'] and @file.isVideo
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ImageLoader.prefetch @
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replaceVideo: (post) ->
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{file} = post
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{thumb} = file
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video = $.el 'video',
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preload: 'none'
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loop: true
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poster: thumb.src
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textContent: thumb.alt
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className: thumb.className
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video.dataset.md5 = thumb.dataset.md5
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video.style[attr] = thumb.style[attr] for attr in ['height', 'width', 'maxHeight', 'maxWidth']
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video.src = file.URL
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$.on video, 'mouseover', ImageHover.mouseover if Conf['Image Hover']
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$.replace thumb, video
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file.thumb = video
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file.videoThumb = true
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prefetch: (post) ->
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{file} = post
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return unless file
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{isImage, isVideo, thumb, URL} = file
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return if file.isPrefetched or !(isImage or isVideo) or post.isHidden or post.thread.isHidden
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type = if (match = URL.match(/\.([^.]+)$/)[1].toUpperCase()) is 'JPEG' then 'JPG' else match
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replace = Conf["Replace #{type}"] and !/spoiler/.test thumb.src
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return unless replace or Conf['prefetch']
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return unless [post, post.clones...].some (clone) -> doc.contains clone.nodes.root
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file.isPrefetched = true
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if file.videoThumb
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for clone in [post, post.clones...]
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clone.file.thumb.preload = 'auto' for clone in post.clones
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thumb.preload = 'auto'
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return
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el = $.el if isImage then 'img' else 'video'
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if replace and isImage
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$.on el, 'load', ->
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clone.file.thumb.src = URL for clone in post.clones
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thumb.src = URL
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el.src = URL
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