Class Measurement

rich/measure.py:11–122

Stores the minimum and maximum widths (in characters) required to render an object.

class Measurement(NamedTuple):
    """Stores the minimum and maximum widths (in characters) required to render an object."""

    minimum: int
    """Minimum number of cells required to render."""
    maximum: int
    """Maximum number of cells required to render."""

    @property
    def span(self) -> int:
        """Get difference between maximum and minimum."""
        return self.maximum - self.minimum

    def normalize(self) -> "Measurement":
        """Get measurement that ensures that minimum <= maximum and minimum >= 0

        Returns:
            Measurement: A normalized measurement.
        """
        minimum, maximum = self
        minimum = min(max(0, minimum), maximum)
        return Measurement(max(0, minimum), max(0, max(minimum, maximum)))

    def with_maximum(self, width: int) -> "Measurement":
        """Get a RenderableWith where the widths are <= width.

        Args:
            width (int): Maximum desired width.

        Returns:
            Measurement: New Measurement object.
        """
        minimum, maximum = self
        return Measurement(min(minimum, width), min(maximum, width))

    def with_minimum(self, width: int) -> "Measurement":
        """Get a RenderableWith where the widths are >= width.

        Args:
            width (int): Minimum desired width.

        Returns:
            Measurement: New Measurement object.
        """
        minimum, maximum = self
        width = max(0, width)
        return Measurement(max(minimum, width), max(maximum, width))

    def clamp(
        self, min_width: Optional[int] = None, max_width: Optional[int] = None
    ) -> "Measurement":
        """Clamp a measurement within the specified range.

        Args:
            min_width (int): Minimum desired width, or ``None`` for no minimum. Defaults to None.
            max_width (int): Maximum desired width, or ``None`` for no maximum. Defaults to None.

        Returns: