51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
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from typing import TYPE_CHECKING
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from rich.measure import Measurement
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from rich.segment import Segment
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if TYPE_CHECKING:
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from rich.console import Console, ConsoleOptions, RenderableType, RenderResult
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from rich.style import StyleType
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class Styled:
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"""A renderable which allows you to apply a style before and after another renderable.
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This can be used to layer styles on top of each other, like a style sandwich. This is used,
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for example, in the DataTable to layer default CSS styles + user renderables (e.g. Text objects
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stored in the cells of the table) + CSS component styles on top of each other."""
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def __init__(
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self,
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renderable: "RenderableType",
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pre_style: "StyleType",
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post_style: "StyleType",
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) -> None:
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"""Construct a Styled.
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Args:
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renderable (RenderableType): Any renderable.
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pre_style (StyleType): A style to apply across the entire renderable.
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Will be applied before the styles from the renderable itself.
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post_style (StyleType): A style to apply across the entire renderable.
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Will be applied after the styles from the renderable itself.
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"""
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self.renderable = renderable
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self.pre_style = pre_style
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self.post_style = post_style
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def __rich_console__(
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self, console: "Console", options: "ConsoleOptions"
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) -> "RenderResult":
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pre_style = console.get_style(self.pre_style)
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post_style = console.get_style(self.post_style)
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rendered_segments = console.render(self.renderable, options)
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segments = Segment.apply_style(
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rendered_segments, style=pre_style, post_style=post_style
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)
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return segments
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def __rich_measure__(
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self, console: "Console", options: "ConsoleOptions"
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) -> Measurement:
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return Measurement.get(console, options, self.renderable)
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