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E-book viewer: Fix selection popup not showing for some books on some platforms when the selection is in the top line. Fixes #2024375 [Private bug](https://bugs.launchpad.net/calibre/+bug/2024375)
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@ -95,7 +95,10 @@ def range_extents(q, in_flow_mode):
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end = q.cloneRange()
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def rect_onscreen(r):
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if r.right <= window.innerWidth and r.bottom <= window.innerHeight and r.left >= 0 and r.top >= 0:
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# we use -1 rather than zero for the top limit because on some
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# platforms the browser engine returns that for top line selections.
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# See https://bugs.launchpad.net/calibre/+bug/2024375/ for a test case.
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if r.right <= window.innerWidth and r.bottom <= window.innerHeight and r.left >= 0 and r.top >= -1:
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return True
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return False
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