File size: 4,565 Bytes
2c3c408 | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | from __future__ import annotations
from rich.console import ConsoleOptions, Console, RenderResult
from rich.style import StyleType
from rich.text import Text
class UnderlineBar:
"""Thin horizontal bar with a portion highlighted.
Args:
highlight_range (tuple[float, float]): The range to highlight. Defaults to ``(0, 0)`` (no highlight)
highlight_style (StyleType): The style of the highlighted range of the bar.
background_style (StyleType): The style of the non-highlighted range(s) of the bar.
width (int, optional): The width of the bar, or ``None`` to fill available width.
"""
def __init__(
self,
highlight_range: tuple[float, float] = (0, 0),
highlight_style: StyleType = "magenta",
background_style: StyleType = "grey37",
clickable_ranges: dict[str, tuple[int, int]] | None = None,
width: int | None = None,
) -> None:
self.highlight_range = highlight_range
self.highlight_style = highlight_style
self.background_style = background_style
self.clickable_ranges = clickable_ranges or {}
self.width = width
def __rich_console__(
self, console: Console, options: ConsoleOptions
) -> RenderResult:
highlight_style = console.get_style(self.highlight_style)
background_style = console.get_style(self.background_style)
half_bar_right = "╸"
half_bar_left = "╺"
bar = "━"
width = self.width or options.max_width
start, end = self.highlight_range
start = max(start, 0)
end = min(end, width)
output_bar = Text("", end="")
if start == end == 0 or end < 0 or start > end:
output_bar.append(Text(bar * width, style=background_style, end=""))
yield output_bar
return
# Round start and end to nearest half
start = round(start * 2) / 2
end = round(end * 2) / 2
# Check if we start/end on a number that rounds to a .5
half_start = start - int(start) > 0
half_end = end - int(end) > 0
# Initial non-highlighted portion of bar
output_bar.append(
Text(bar * (int(start - 0.5)), style=background_style, end="")
)
if not half_start and start > 0:
output_bar.append(Text(half_bar_right, style=background_style, end=""))
# The highlighted portion
bar_width = int(end) - int(start)
if half_start:
output_bar.append(
Text(
half_bar_left + bar * (bar_width - 1), style=highlight_style, end=""
)
)
else:
output_bar.append(Text(bar * bar_width, style=highlight_style, end=""))
if half_end:
output_bar.append(Text(half_bar_right, style=highlight_style, end=""))
# The non-highlighted tail
if not half_end and end - width != 0:
output_bar.append(Text(half_bar_left, style=background_style, end=""))
output_bar.append(
Text(bar * (int(width) - int(end) - 1), style=background_style, end="")
)
# Fire actions when certain ranges are clicked (e.g. for tabs)
for range_name, (start, end) in self.clickable_ranges.items():
output_bar.apply_meta(
{"@click": f"range_clicked('{range_name}')"}, start, end
)
yield output_bar
if __name__ == "__main__":
import random
from time import sleep
from rich.color import ANSI_COLOR_NAMES
console = Console()
def frange(start, end, step):
current = start
while current < end:
yield current
current += step
while current >= 0:
yield current
current -= step
step = 0.1
start_range = frange(0.5, 10.5, step)
end_range = frange(10, 20, step)
ranges = zip(start_range, end_range)
console.print(UnderlineBar(width=20), f" (.0, .0)")
for range in ranges:
color = random.choice(list(ANSI_COLOR_NAMES.keys()))
console.print(
UnderlineBar(range, highlight_style=color, width=20),
f" {range}",
)
from rich.live import Live
bar = UnderlineBar(highlight_range=(0, 4.5), width=80)
with Live(bar, refresh_per_second=60) as live:
while True:
bar.highlight_range = (
bar.highlight_range[0] + 0.1,
bar.highlight_range[1] + 0.1,
)
sleep(0.005)
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