File size: 4,419 Bytes
5b76e0f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | from typing import cast, Tuple, TYPE_CHECKING, Union
if TYPE_CHECKING:
from .console import (
Console,
ConsoleOptions,
RenderableType,
RenderResult,
)
from .jupyter import JupyterMixin
from .measure import Measurement
from .style import Style
from .segment import Segment
PaddingDimensions = Union[int, Tuple[int], Tuple[int, int], Tuple[int, int, int, int]]
class Padding(JupyterMixin):
"""Draw space around content.
Example:
>>> print(Padding("Hello", (2, 4), style="on blue"))
Args:
renderable (RenderableType): String or other renderable.
pad (Union[int, Tuple[int]]): Padding for top, right, bottom, and left borders.
May be specified with 1, 2, or 4 integers (CSS style).
style (Union[str, Style], optional): Style for padding characters. Defaults to "none".
expand (bool, optional): Expand padding to fit available width. Defaults to True.
"""
def __init__(
self,
renderable: "RenderableType",
pad: "PaddingDimensions" = (0, 0, 0, 0),
*,
style: Union[str, Style] = "none",
expand: bool = True,
):
self.renderable = renderable
self.top, self.right, self.bottom, self.left = self.unpack(pad)
self.style = style
self.expand = expand
@classmethod
def indent(cls, renderable: "RenderableType", level: int) -> "Padding":
"""Make padding instance to render an indent.
Args:
renderable (RenderableType): String or other renderable.
level (int): Number of characters to indent.
Returns:
Padding: A Padding instance.
"""
return Padding(renderable, pad=(0, 0, 0, level), expand=False)
@staticmethod
def unpack(pad: "PaddingDimensions") -> Tuple[int, int, int, int]:
"""Unpack padding specified in CSS style."""
if isinstance(pad, int):
return (pad, pad, pad, pad)
if len(pad) == 1:
_pad = pad[0]
return (_pad, _pad, _pad, _pad)
if len(pad) == 2:
pad_top, pad_right = cast(Tuple[int, int], pad)
return (pad_top, pad_right, pad_top, pad_right)
if len(pad) == 4:
top, right, bottom, left = cast(Tuple[int, int, int, int], pad)
return (top, right, bottom, left)
raise ValueError(f"1, 2 or 4 integers required for padding; {len(pad)} given")
def __repr__(self) -> str:
return f"Padding({self.renderable!r}, ({self.top},{self.right},{self.bottom},{self.left}))"
def __rich_console__(
self, console: "Console", options: "ConsoleOptions"
) -> "RenderResult":
style = console.get_style(self.style)
if self.expand:
width = options.max_width
else:
width = min(
Measurement.get(console, self.renderable, options.max_width).maximum
+ self.left
+ self.right,
options.max_width,
)
child_options = options.update(width=width - self.left - self.right)
lines = console.render_lines(
self.renderable, child_options, style=style, pad=False
)
lines = Segment.set_shape(lines, child_options.max_width, style=style)
blank_line = Segment(" " * width + "\n", style)
top = [blank_line] * self.top
bottom = [blank_line] * self.bottom
left = Segment(" " * self.left, style) if self.left else None
right = Segment(" " * self.right, style) if self.right else None
new_line = Segment.line()
yield from top
for line in lines:
if left is not None:
yield left
yield from line
if right is not None:
yield right
yield new_line
yield from bottom
def __rich_measure__(self, console: "Console", max_width: int) -> "Measurement":
extra_width = self.left + self.right
if max_width - extra_width < 1:
return Measurement(max_width, max_width)
measure_min, measure_max = Measurement.get(
console, self.renderable, max(0, max_width - extra_width)
)
measurement = Measurement(measure_min + extra_width, measure_max + extra_width)
measurement = measurement.with_maximum(max_width)
return measurement
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