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Viewer: Fix rare exception when navigating to a CFI. Fixes #1849775 [Exception in ebook viewer](https://bugs.launchpad.net/calibre/+bug/1849775)

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Kovid Goyal 2019-10-25 20:37:01 +05:30
parent 89eef411c4
commit 99ce8f9876
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1 changed files with 16 additions and 6 deletions
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18
src/pyj/read_book/cfi.pyj
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@ -540,12 +540,22 @@ def scroll_to(cfi, callback, doc): # {{{
p.normalize() p.normalize()
# Reset the range to what it was before the span was added # Reset the range to what it was before the span was added
r.setStart(sc, so) offset = so
while offset > -1:
try: try:
r.setEnd(ec, eo) r.setStart(sc, offset)
break
except: except:
# this happens for some japanese books offset -= 1
r.setEnd(ec, eo-1)
offset = eo
while offset > -1:
try:
r.setEnd(ec, offset)
break
except:
offset -= 1
rects = r.getClientRects() rects = r.getClientRects()
if rects.length > 0: if rects.length > 0:
rect = rects[0] rect = rects[0]