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More robust absleft()

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Kovid Goyal 2012-06-19 13:22:00 +05:30
parent 3ba2bdd0e1
commit 100dd0dd45
2 changed files with 34 additions and 3 deletions
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src/calibre/ebooks/oeb/display/paged.coffee
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@ -15,17 +15,48 @@ log = (args...) -> # {{{
process.stdout.write(msg + '\n')
# }}}
body_height = () ->
body_height = () -> # {{{
db = document.body
dde = document.documentElement
if db? and dde?
return Math.max(db.scrollHeight, dde.scrollHeight, db.offsetHeight,
dde.offsetHeight, db.clientHeight, dde.clientHeight)
return 0
# }}}
absleft = (elem) ->
window_scroll_pos = (win=window) -> # {{{
if typeof(win.pageXOffset) == 'number'
x = win.pageXOffset
y = win.pageYOffset
else # IE < 9
if document.body and ( document.body.scrollLeft or document.body.scrollTop )
x = document.body.scrollLeft
y = document.body.scrollTop
else if document.documentElement and ( document.documentElement.scrollLeft or document.documentElement.scrollTop)
y = document.documentElement.scrollTop
x = document.documentElement.scrollLeft
return [x, y]
# }}}
viewport_to_document = (x, y, doc=window?.document) -> # {{{
until doc == window.document
# We are in a frame
frame = doc.defaultView.frameElement
rect = frame.getBoundingClientRect()
x += rect.left
y += rect.top
doc = frame.ownerDocument
win = doc.defaultView
[wx, wy] = window_scroll_pos(win)
x += wx
y += wy
return [x, y]
# }}}
absleft = (elem) -> # {{{
r = elem.getBoundingClientRect()
return r.left + window.pageXOffset
return viewport_to_document(r.left, 0, elem.ownerDocument)[0]
# }}}
class PagedDisplay
###