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fix resize-compensating scrolling

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ccd0 2014-07-27 11:29:10 -07:00
parent adda6e19de
commit cf2f7d3a2f
1 changed files with 18 additions and 11 deletions
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29
src/Images/ImageExpand.coffee
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@ -114,11 +114,20 @@ ImageExpand =
contract: (post) ->
{file} = post
{bottom} = post.nodes.root.getBoundingClientRect()
oldHeight = d.body.clientHeight
$.rmClass post.nodes.root, 'expanded-image'
$.rmClass file.thumb, 'expanding'
$.rm file.videoControls if file.videoControls
for x in ['isExpanding', 'isExpanded', 'videoControls', 'wasPlaying', 'scrollIntoView']
delete file[x]
# Scroll to keep our place in the thread when images are contracted above us.
if doc.contains(post.nodes.root) and bottom <= 0
window.scrollBy 0, d.body.clientHeight - oldHeight
if el = file.fullImage
$.off el, 'error', ImageExpand.error
if file.isVideo
@ -161,32 +170,30 @@ ImageExpand =
ImageExpand.setupVideoCB post
$.asap (-> if isVideo then el.readyState >= el.HAVE_CURRENT_DATA else el.naturalHeight), ->
if post.nodes.root.parentNode
{bottom} = post.nodes.root.getBoundingClientRect()
$.queueTask -> ImageExpand.completeExpand post, bottom
else
# Image might start/finish loading before the post is inserted; don't scroll.
ImageExpand.completeExpand post
ImageExpand.completeExpand post
completeExpand: (post, oldBottom) ->
completeExpand: (post) ->
{file} = post
return unless file.isExpanding # contracted before the image loaded
{bottom} = post.nodes.root.getBoundingClientRect()
oldHeight = d.body.clientHeight
$.addClass post.nodes.root, 'expanded-image'
$.rmClass file.thumb, 'expanding'
file.isExpanded = true
delete file.isExpanding
# Scroll to keep our place in the thread when images are expanded above us.
if oldBottom? and oldBottom <= 0
window.scrollBy 0, post.nodes.root.getBoundingClientRect().bottom - oldBottom
if doc.contains(post.nodes.root) and bottom <= 0
window.scrollBy 0, d.body.clientHeight - oldHeight
# Scroll to display full image.
if file.scrollIntoView
delete file.scrollIntoView
imageBottom = Header.getBottomOf file.fullImage
{height} = file.fullImage.getBoundingClientRect()
if imageBottom + height >= 0 and imageBottom < 0
imageHeight = file.fullImage.getBoundingClientRect().height
if imageBottom + imageHeight >= 0 and imageBottom < 0
window.scrollBy 0, Math.min(-imageBottom, Header.getTopOf file.fullImage)
if file.isVideo