65 lines
1.6 KiB
Python
65 lines
1.6 KiB
Python
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from __future__ import annotations
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from fractions import Fraction
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from typing import NamedTuple
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from textual.geometry import Size
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class Extrema(NamedTuple):
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"""Specifies minimum and maximum dimensions."""
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min_width: Fraction | None = None
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max_width: Fraction | None = None
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min_height: Fraction | None = None
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max_height: Fraction | None = None
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def apply_width(self, width: Fraction) -> Fraction:
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"""Apply width extrema.
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Args:
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width: Width value.
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Returns:
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Width, clamped between minimum and maximum.
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"""
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min_width, max_width = self[:2]
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if min_width is not None:
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width = max(width, min_width)
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if max_width is not None:
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width = min(width, max_width)
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return width
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def apply_height(self, height: Fraction) -> Fraction:
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"""Apply height extrema.
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Args:
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height: Height value.
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Returns:
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Height, clamped between minimum and maximum.
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"""
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min_height, max_height = self[2:]
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if min_height is not None:
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height = max(height, min_height)
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if max_height is not None:
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height = min(height, max_height)
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return height
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def apply_dimensions(self, width: int, height: int) -> Size:
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"""Apply extrema to integer dimensions.
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Args:
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width: Integer width.
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height: Integer height.
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Returns:
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Size with extrema applied.
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"""
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return Size(
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int(self.apply_width(Fraction(width))),
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int(self.apply_height(Fraction(height))),
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)
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