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fill3: Cope with negative interval fractions in scrollbars

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This commit is contained in:
Andrew Hamilton 2022-03-15 10:24:38 +10:00
parent 34130e2506
commit b9455f393d
1 changed files with 3 additions and 2 deletions
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5
fill3/fill3/__init__.py
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@ -185,9 +185,10 @@ class ScrollBar:
width, height = dimensions width, height = dimensions
assert width == 1 or height == 1, (width, height) assert width == 1 or height == 1, (width, height)
length = width if self._is_horizontal else height length = width if self._is_horizontal else height
assert all(0 <= fraction <= 1 for fraction in self.interval), self.interval interval = [abs(fraction) for fraction in self.interval]
assert all(0 <= fraction <= 1 for fraction in interval), interval
(start_index, start_remainder), (end_index, end_remainder) = \ (start_index, start_remainder), (end_index, end_remainder) = \
[divmod(fraction * length * 8, 8) for fraction in self.interval] [divmod(fraction * length * 8, 8) for fraction in interval]
start_index, end_index = int(start_index), int(end_index) start_index, end_index = int(start_index), int(end_index)
start_remainder, end_remainder = int(start_remainder), int(end_remainder) start_remainder, end_remainder = int(start_remainder), int(end_remainder)
if start_index == end_index: if start_index == end_index: