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Adjust limits used for at_current() loop

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Kovid Goyal 2020-08-13 13:54:48 +05:30
parent bca1ef5767
commit 603b9b70ff
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1 changed files with 4 additions and 8 deletions
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src/pyj/read_book/cfi.pyj
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@ -821,20 +821,16 @@ def at_point(x, y): # {{{
# }}} # }}}
def at_current(): # {{{ def at_current(): # {{{
wini, winb = scroll_viewport.inline_size(), scroll_viewport.block_size() # We subtract one because the actual position query for CFI elements is relative to the
# We subtract one because the the actual position query for CFI elements is relative to the
# viewport, and the viewport coordinates actually go from 0 to the size - 1. # viewport, and the viewport coordinates actually go from 0 to the size - 1.
# If we don't do this, the first line of queries will always fail in those cases where we # If we don't do this, the first line of queries will always fail in those cases where we
# start at the right of the viewport because they'll be outside the viewport # start at the right of the viewport because they'll be outside the viewport
wini -= 1 wini, winb = scroll_viewport.inline_size() - 1, scroll_viewport.block_size() - 1
winb -= 1
# Don't let the deltas go below 10 or above 30, to prevent perverse cases where # Don't let the deltas go too small or too large, to prevent perverse cases where
# we don't loop at all, loop too many times, or skip elements because we're # we don't loop at all, loop too many times, or skip elements because we're
# looping too fast. # looping too fast.
deltai = min(max(Math.ceil(rem_size() / 2), 5), 30) deltai = deltab = max(8, min(Math.ceil(rem_size() / 2), 32))
deltab = min(max(Math.ceil(rem_size() / 2), 5), 30)
# i.e. English, Hebrew: # i.e. English, Hebrew:
if scroll_viewport.horizontal_writing_mode: if scroll_viewport.horizontal_writing_mode: