312 lines
10 KiB
Python
312 lines
10 KiB
Python
|
import sys
|
||
|
|
from itertools import chain
|
||
|
|
from typing import TYPE_CHECKING, Iterable, Optional
|
||
|
|
|
||
|
|
if sys.version_info >= (3, 8):
|
||
|
|
from typing import Literal
|
||
|
|
else:
|
||
|
|
from pip._vendor.typing_extensions import Literal # pragma: no cover
|
||
|
|
|
||
|
|
from .constrain import Constrain
|
||
|
|
from .jupyter import JupyterMixin
|
||
|
|
from .measure import Measurement
|
||
|
|
from .segment import Segment
|
||
|
|
from .style import StyleType
|
||
|
|
|
||
|
|
if TYPE_CHECKING:
|
||
|
|
from .console import Console, ConsoleOptions, RenderableType, RenderResult
|
||
|
|
|
||
|
|
AlignMethod = Literal["left", "center", "right"]
|
||
|
|
VerticalAlignMethod = Literal["top", "middle", "bottom"]
|
||
|
|
|
||
|
|
|
||
|
|
class Align(JupyterMixin):
|
||
|
|
"""Align a renderable by adding spaces if necessary.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
renderable (RenderableType): A console renderable.
|
||
|
|
align (AlignMethod): One of "left", "center", or "right""
|
||
|
|
style (StyleType, optional): An optional style to apply to the background.
|
||
|
|
vertical (Optional[VerticalAlginMethod], optional): Optional vertical align, one of "top", "middle", or "bottom". Defaults to None.
|
||
|
|
pad (bool, optional): Pad the right with spaces. Defaults to True.
|
||
|
|
width (int, optional): Restrict contents to given width, or None to use default width. Defaults to None.
|
||
|
|
height (int, optional): Set height of align renderable, or None to fit to contents. Defaults to None.
|
||
|
|
|
||
|
|
Raises:
|
||
|
|
ValueError: if ``align`` is not one of the expected values.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
renderable: "RenderableType",
|
||
|
|
align: AlignMethod = "left",
|
||
|
|
style: Optional[StyleType] = None,
|
||
|
|
*,
|
||
|
|
vertical: Optional[VerticalAlignMethod] = None,
|
||
|
|
pad: bool = True,
|
||
|
|
width: Optional[int] = None,
|
||
|
|
height: Optional[int] = None,
|
||
|
|
) -> None:
|
||
|
|
if align not in ("left", "center", "right"):
|
||
|
|
raise ValueError(
|
||
|
|
f'invalid value for align, expected "left", "center", or "right" (not {align!r})'
|
||
|
|
)
|
||
|
|
if vertical is not None and vertical not in ("top", "middle", "bottom"):
|
||
|
|
raise ValueError(
|
||
|
|
f'invalid value for vertical, expected "top", "middle", or "bottom" (not {vertical!r})'
|
||
|
|
)
|
||
|
|
self.renderable = renderable
|
||
|
|
self.align = align
|
||
|
|
self.style = style
|
||
|
|
self.vertical = vertical
|
||
|
|
self.pad = pad
|
||
|
|
self.width = width
|
||
|
|
self.height = height
|
||
|
|
|
||
|
|
def __repr__(self) -> str:
|
||
|
|
return f"Align({self.renderable!r}, {self.align!r})"
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def left(
|
||
|
|
cls,
|
||
|
|
renderable: "RenderableType",
|
||
|
|
style: Optional[StyleType] = None,
|
||
|
|
*,
|
||
|
|
vertical: Optional[VerticalAlignMethod] = None,
|
||
|
|
pad: bool = True,
|
||
|
|
width: Optional[int] = None,
|
||
|
|
height: Optional[int] = None,
|
||
|
|
) -> "Align":
|
||
|
|
"""Align a renderable to the left."""
|
||
|
|
return cls(
|
||
|
|
renderable,
|
||
|
|
"left",
|
||
|
|
style=style,
|
||
|
|
vertical=vertical,
|
||
|
|
pad=pad,
|
||
|
|
width=width,
|
||
|
|
height=height,
|
||
|
|
)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def center(
|
||
|
|
cls,
|
||
|
|
renderable: "RenderableType",
|
||
|
|
style: Optional[StyleType] = None,
|
||
|
|
*,
|
||
|
|
vertical: Optional[VerticalAlignMethod] = None,
|
||
|
|
pad: bool = True,
|
||
|
|
width: Optional[int] = None,
|
||
|
|
height: Optional[int] = None,
|
||
|
|
) -> "Align":
|
||
|
|
"""Align a renderable to the center."""
|
||
|
|
return cls(
|
||
|
|
renderable,
|
||
|
|
"center",
|
||
|
|
style=style,
|
||
|
|
vertical=vertical,
|
||
|
|
pad=pad,
|
||
|
|
width=width,
|
||
|
|
height=height,
|
||
|
|
)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def right(
|
||
|
|
cls,
|
||
|
|
renderable: "RenderableType",
|
||
|
|
style: Optional[StyleType] = None,
|
||
|
|
*,
|
||
|
|
vertical: Optional[VerticalAlignMethod] = None,
|
||
|
|
pad: bool = True,
|
||
|
|
width: Optional[int] = None,
|
||
|
|
height: Optional[int] = None,
|
||
|
|
) -> "Align":
|
||
|
|
"""Align a renderable to the right."""
|
||
|
|
return cls(
|
||
|
|
renderable,
|
||
|
|
"right",
|
||
|
|
style=style,
|
||
|
|
vertical=vertical,
|
||
|
|
pad=pad,
|
||
|
|
width=width,
|
||
|
|
height=height,
|
||
|
|
)
|
||
|
|
|
||
|
|
def __rich_console__(
|
||
|
|
self, console: "Console", options: "ConsoleOptions"
|
||
|
|
) -> "RenderResult":
|
||
|
|
align = self.align
|
||
|
|
width = console.measure(self.renderable, options=options).maximum
|
||
|
|
rendered = console.render(
|
||
|
|
Constrain(
|
||
|
|
self.renderable, width if self.width is None else min(width, self.width)
|
||
|
|
),
|
||
|
|
options.update(height=None),
|
||
|
|
)
|
||
|
|
lines = list(Segment.split_lines(rendered))
|
||
|
|
width, height = Segment.get_shape(lines)
|
||
|
|
lines = Segment.set_shape(lines, width, height)
|
||
|
|
new_line = Segment.line()
|
||
|
|
excess_space = options.max_width - width
|
||
|
|
style = console.get_style(self.style) if self.style is not None else None
|
||
|
|
|
||
|
|
def generate_segments() -> Iterable[Segment]:
|
||
|
|
if excess_space <= 0:
|
||
|
|
# Exact fit
|
||
|
|
for line in lines:
|
||
|
|
yield from line
|
||
|
|
yield new_line
|
||
|
|
|
||
|
|
elif align == "left":
|
||
|
|
# Pad on the right
|
||
|
|
pad = Segment(" " * excess_space, style) if self.pad else None
|
||
|
|
for line in lines:
|
||
|
|
yield from line
|
||
|
|
if pad:
|
||
|
|
yield pad
|
||
|
|
yield new_line
|
||
|
|
|
||
|
|
elif align == "center":
|
||
|
|
# Pad left and right
|
||
|
|
left = excess_space // 2
|
||
|
|
pad = Segment(" " * left, style)
|
||
|
|
pad_right = (
|
||
|
|
Segment(" " * (excess_space - left), style) if self.pad else None
|
||
|
|
)
|
||
|
|
for line in lines:
|
||
|
|
if left:
|
||
|
|
yield pad
|
||
|
|
yield from line
|
||
|
|
if pad_right:
|
||
|
|
yield pad_right
|
||
|
|
yield new_line
|
||
|
|
|
||
|
|
elif align == "right":
|
||
|
|
# Padding on left
|
||
|
|
pad = Segment(" " * excess_space, style)
|
||
|
|
for line in lines:
|
||
|
|
yield pad
|
||
|
|
yield from line
|
||
|
|
yield new_line
|
||
|
|
|
||
|
|
blank_line = (
|
||
|
|
Segment(f"{' ' * (self.width or options.max_width)}\n", style)
|
||
|
|
if self.pad
|
||
|
|
else Segment("\n")
|
||
|
|
)
|
||
|
|
|
||
|
|
def blank_lines(count: int) -> Iterable[Segment]:
|
||
|
|
if count > 0:
|
||
|
|
for _ in range(count):
|
||
|
|
yield blank_line
|
||
|
|
|
||
|
|
vertical_height = self.height or options.height
|
||
|
|
iter_segments: Iterable[Segment]
|
||
|
|
if self.vertical and vertical_height is not None:
|
||
|
|
if self.vertical == "top":
|
||
|
|
bottom_space = vertical_height - height
|
||
|
|
iter_segments = chain(generate_segments(), blank_lines(bottom_space))
|
||
|
|
elif self.vertical == "middle":
|
||
|
|
top_space = (vertical_height - height) // 2
|
||
|
|
bottom_space = vertical_height - top_space - height
|
||
|
|
iter_segments = chain(
|
||
|
|
blank_lines(top_space),
|
||
|
|
generate_segments(),
|
||
|
|
blank_lines(bottom_space),
|
||
|
|
)
|
||
|
|
else: # self.vertical == "bottom":
|
||
|
|
top_space = vertical_height - height
|
||
|
|
iter_segments = chain(blank_lines(top_space), generate_segments())
|
||
|
|
else:
|
||
|
|
iter_segments = generate_segments()
|
||
|
|
if self.style:
|
||
|
|
style = console.get_style(self.style)
|
||
|
|
iter_segments = Segment.apply_style(iter_segments, style)
|
||
|
|
yield from iter_segments
|
||
|
|
|
||
|
|
def __rich_measure__(
|
||
|
|
self, console: "Console", options: "ConsoleOptions"
|
||
|
|
) -> Measurement:
|
||
|
|
measurement = Measurement.get(console, options, self.renderable)
|
||
|
|
return measurement
|
||
|
|
|
||
|
|
|
||
|
|
class VerticalCenter(JupyterMixin):
|
||
|
|
"""Vertically aligns a renderable.
|
||
|
|
|
||
|
|
Warn:
|
||
|
|
This class is deprecated and may be removed in a future version. Use Align class with
|
||
|
|
`vertical="middle"`.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
renderable (RenderableType): A renderable object.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
renderable: "RenderableType",
|
||
|
|
style: Optional[StyleType] = None,
|
||
|
|
) -> None:
|
||
|
|
self.renderable = renderable
|
||
|
|
self.style = style
|
||
|
|
|
||
|
|
def __repr__(self) -> str:
|
||
|
|
return f"VerticalCenter({self.renderable!r})"
|
||
|
|
|
||
|
|
def __rich_console__(
|
||
|
|
self, console: "Console", options: "ConsoleOptions"
|
||
|
|
) -> "RenderResult":
|
||
|
|
style = console.get_style(self.style) if self.style is not None else None
|
||
|
|
lines = console.render_lines(
|
||
|
|
self.renderable, options.update(height=None), pad=False
|
||
|
|
)
|
||
|
|
width, _height = Segment.get_shape(lines)
|
||
|
|
new_line = Segment.line()
|
||
|
|
height = options.height or options.size.height
|
||
|
|
top_space = (height - len(lines)) // 2
|
||
|
|
bottom_space = height - top_space - len(lines)
|
||
|
|
blank_line = Segment(f"{' ' * width}", style)
|
||
|
|
|
||
|
|
def blank_lines(count: int) -> Iterable[Segment]:
|
||
|
|
for _ in range(count):
|
||
|
|
yield blank_line
|
||
|
|
yield new_line
|
||
|
|
|
||
|
|
if top_space > 0:
|
||
|
|
yield from blank_lines(top_space)
|
||
|
|
for line in lines:
|
||
|
|
yield from line
|
||
|
|
yield new_line
|
||
|
|
if bottom_space > 0:
|
||
|
|
yield from blank_lines(bottom_space)
|
||
|
|
|
||
|
|
def __rich_measure__(
|
||
|
|
self, console: "Console", options: "ConsoleOptions"
|
||
|
|
) -> Measurement:
|
||
|
|
measurement = Measurement.get(console, options, self.renderable)
|
||
|
|
return measurement
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == "__main__": # pragma: no cover
|
||
|
|
from pip._vendor.rich.console import Console, Group
|
||
|
|
from pip._vendor.rich.highlighter import ReprHighlighter
|
||
|
|
from pip._vendor.rich.panel import Panel
|
||
|
|
|
||
|
|
highlighter = ReprHighlighter()
|
||
|
|
console = Console()
|
||
|
|
|
||
|
|
panel = Panel(
|
||
|
|
Group(
|
||
|
|
Align.left(highlighter("align='left'")),
|
||
|
|
Align.center(highlighter("align='center'")),
|
||
|
|
Align.right(highlighter("align='right'")),
|
||
|
|
),
|
||
|
|
width=60,
|
||
|
|
style="on dark_blue",
|
||
|
|
title="Algin",
|
||
|
|
)
|
||
|
|
|
||
|
|
console.print(
|
||
|
|
Align.center(panel, vertical="middle", style="on red", height=console.height)
|
||
|
|
)
|