760 lines
24 KiB
Python
760 lines
24 KiB
Python
#!/usr/bin/env python3
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import asyncio
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import datetime
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import enum
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import ipaddress
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import logging
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import random
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import signal
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import socket
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import typing
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import coloredlogs
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import i3ipc
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import i3ipc.aio
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import psutil
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coloredlogs.install(level="DEBUG", fmt="%(levelname)s %(message)s")
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log = logging.getLogger()
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T = typing.TypeVar("T", bound="ComposableText")
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P = typing.TypeVar("P", bound="ComposableText")
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C = typing.TypeVar("C", bound="ComposableText")
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Sortable = str | int
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def humanSize(numi: int) -> str:
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"""
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Returns a string of width 3+3
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"""
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num = float(numi)
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for unit in ("B ", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB"):
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if abs(num) < 1000:
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if num >= 10:
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return "{:3d}{}".format(int(num), unit)
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else:
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return "{:.1f}{}".format(num, unit)
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num /= 1024
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return "{:d}YiB".format(numi)
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class ComposableText(typing.Generic[P, C]):
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def __init__(
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self,
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parent: typing.Optional[P] = None,
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sortKey: Sortable = 0,
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) -> None:
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self.parent: typing.Optional[P] = None
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self.children: typing.MutableSequence[C] = list()
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self.sortKey = sortKey
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if parent:
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self.setParent(parent)
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self.bar = self.getFirstParentOfType(Bar)
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def setParent(self, parent: P) -> None:
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assert self.parent is None
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parent.children.append(self)
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assert isinstance(parent.children, list)
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parent.children.sort(key=lambda c: c.sortKey)
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self.parent = parent
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self.parent.updateMarkup()
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def unsetParent(self) -> None:
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assert self.parent
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self.parent.children.remove(self)
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self.parent.updateMarkup()
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self.parent = None
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def getFirstParentOfType(self, typ: typing.Type[T]) -> T:
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parent = self
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while not isinstance(parent, typ):
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assert parent.parent, f"{self} doesn't have a parent of {typ}"
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parent = parent.parent
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return parent
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def updateMarkup(self) -> None:
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self.bar.refresh.set()
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# TODO OPTI See if worth caching the output
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def generateMarkup(self) -> str:
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raise NotImplementedError(f"{self} cannot generate markup")
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def getMarkup(self) -> str:
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return self.generateMarkup()
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def randomColor(seed: int | bytes | None = None) -> str:
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if seed is not None:
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random.seed(seed)
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return "#" + "".join(f"{random.randint(0, 0xff):02x}" for _ in range(3))
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class Button(enum.Enum):
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CLICK_LEFT = "1"
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CLICK_MIDDLE = "2"
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CLICK_RIGHT = "3"
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SCROLL_UP = "4"
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SCROLL_DOWN = "5"
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class Section(ComposableText):
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"""
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Colorable block separated by chevrons
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"""
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def __init__(self, parent: "Module", sortKey: Sortable = 0) -> None:
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super().__init__(parent=parent, sortKey=sortKey)
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self.parent: "Module"
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self.color = randomColor()
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self.desiredText: str | None = None
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self.text = ""
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self.targetSize = -1
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self.size = -1
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self.animationTask: asyncio.Task | None = None
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self.actions: dict[Button, str] = dict()
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def isHidden(self) -> bool:
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return self.size < 0
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# Geometric series, with a cap
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ANIM_A = 0.025
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ANIM_R = 0.9
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ANIM_MIN = 0.001
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async def animate(self) -> None:
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increment = 1 if self.size < self.targetSize else -1
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loop = asyncio.get_running_loop()
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frameTime = loop.time()
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animTime = self.ANIM_A
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while self.size != self.targetSize:
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self.size += increment
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self.updateMarkup()
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animTime *= self.ANIM_R
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animTime = max(self.ANIM_MIN, animTime)
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frameTime += animTime
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sleepTime = frameTime - loop.time()
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# In case of stress, skip refreshing by not awaiting
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if sleepTime > 0:
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await asyncio.sleep(sleepTime)
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else:
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log.warning("Skipped an animation frame")
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def setText(self, text: str | None) -> None:
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# OPTI Don't redraw nor reset animation if setting the same text
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if self.desiredText == text:
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return
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self.desiredText = text
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if text is None:
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self.text = ""
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self.targetSize = -1
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else:
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self.text = f" {text} "
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self.targetSize = len(self.text)
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if self.animationTask:
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self.animationTask.cancel()
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# OPTI Skip the whole animation task if not required
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if self.size == self.targetSize:
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self.updateMarkup()
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else:
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self.animationTask = self.bar.taskGroup.create_task(self.animate())
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def setAction(self, button: Button, callback: typing.Callable | None) -> None:
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if button in self.actions:
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command = self.actions[button]
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self.bar.removeAction(command)
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del self.actions[button]
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if callback:
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command = self.bar.addAction(callback)
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self.actions[button] = command
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def generateMarkup(self) -> str:
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assert not self.isHidden()
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pad = max(0, self.size - len(self.text))
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text = self.text[: self.size] + " " * pad
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for button, command in self.actions.items():
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text = "%{A" + button.value + ":" + command + ":}" + text + "%{A}"
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return text
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class Module(ComposableText):
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"""
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Sections handled by a same updater
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"""
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def __init__(self, parent: "Side") -> None:
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super().__init__(parent=parent)
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self.parent: "Side"
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self.children: typing.MutableSequence[Section]
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self.mirroring: Module | None = None
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self.mirrors: list[Module] = list()
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def mirror(self, module: "Module") -> None:
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self.mirroring = module
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module.mirrors.append(self)
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def getSections(self) -> typing.Sequence[Section]:
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if self.mirroring:
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return self.mirroring.children
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else:
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return self.children
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def updateMarkup(self) -> None:
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super().updateMarkup()
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for mirror in self.mirrors:
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mirror.updateMarkup()
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class Alignment(enum.Enum):
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LEFT = "l"
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RIGHT = "r"
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CENTER = "c"
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class Side(ComposableText):
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def __init__(self, parent: "Screen", alignment: Alignment) -> None:
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super().__init__(parent=parent)
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self.parent: Screen
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self.children: typing.MutableSequence[Module] = []
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self.alignment = alignment
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def generateMarkup(self) -> str:
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if not self.children:
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return ""
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text = "%{" + self.alignment.value + "}"
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lastSection: Section | None = None
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for module in self.children:
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for section in module.getSections():
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if section.isHidden():
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continue
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if lastSection is None:
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if self.alignment == Alignment.LEFT:
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text += "%{B" + section.color + "}%{F-}"
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else:
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text += "%{B-}%{F" + section.color + "}%{R}%{F-}"
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else:
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if self.alignment == Alignment.RIGHT:
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if lastSection.color == section.color:
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text += ""
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else:
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text += "%{F" + section.color + "}%{R}"
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else:
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if lastSection.color == section.color:
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text += ""
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else:
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text += "%{R}%{B" + section.color + "}"
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text += "%{F-}"
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text += section.getMarkup()
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lastSection = section
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if self.alignment != Alignment.RIGHT:
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text += "%{R}%{B-}"
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return text
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class Screen(ComposableText):
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def __init__(self, parent: "Bar", output: str) -> None:
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super().__init__(parent=parent)
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self.parent: "Bar"
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self.children: typing.MutableSequence[Side]
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self.output = output
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for alignment in Alignment:
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Side(parent=self, alignment=alignment)
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def generateMarkup(self) -> str:
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return ("%{Sn" + self.output + "}") + "".join(
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side.getMarkup() for side in self.children
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)
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class Bar(ComposableText):
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"""
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Top-level
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"""
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def __init__(self) -> None:
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super().__init__()
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self.parent: None
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self.children: typing.MutableSequence[Screen]
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self.longRunningTasks: list[asyncio.Task] = list()
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self.refresh = asyncio.Event()
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self.taskGroup = asyncio.TaskGroup()
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self.providers: list["Provider"] = list()
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self.actionIndex = 0
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self.actions: dict[str, typing.Callable] = dict()
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self.periodicProviderTask: typing.Coroutine | None = None
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i3 = i3ipc.Connection()
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for output in i3.get_outputs():
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if not output.active:
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continue
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Screen(parent=self, output=output.name)
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def addLongRunningTask(self, coro: typing.Coroutine) -> None:
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task = self.taskGroup.create_task(coro)
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self.longRunningTasks.append(task)
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async def run(self) -> None:
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cmd = [
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"lemonbar",
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"-b",
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"-a",
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"64",
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"-f",
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"DejaVuSansM Nerd Font:size=10",
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]
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proc = await asyncio.create_subprocess_exec(
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*cmd, stdout=asyncio.subprocess.PIPE, stdin=asyncio.subprocess.PIPE
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)
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async def refresher() -> None:
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assert proc.stdin
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while True:
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await self.refresh.wait()
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self.refresh.clear()
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markup = self.getMarkup()
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proc.stdin.write(markup.encode())
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async def actionHandler() -> None:
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assert proc.stdout
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while True:
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line = await proc.stdout.readline()
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command = line.decode().strip()
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callback = self.actions[command]
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callback()
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async with self.taskGroup:
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self.addLongRunningTask(refresher())
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self.addLongRunningTask(actionHandler())
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for provider in self.providers:
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self.addLongRunningTask(provider.run())
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def exit() -> None:
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log.info("Terminating")
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for task in self.longRunningTasks:
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task.cancel()
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loop = asyncio.get_event_loop()
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loop.add_signal_handler(signal.SIGINT, exit)
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def generateMarkup(self) -> str:
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return "".join(screen.getMarkup() for screen in self.children) + "\n"
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def addProvider(
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self,
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provider: "Provider",
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alignment: Alignment = Alignment.LEFT,
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screenNum: int | None = None,
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) -> None:
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"""
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screenNum: the provider will be added on this screen if set, all otherwise
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"""
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modules = list()
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for s, screen in enumerate(self.children):
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if screenNum is None or s == screenNum:
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side = next(filter(lambda s: s.alignment == alignment, screen.children))
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module = Module(parent=side)
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modules.append(module)
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provider.modules = modules
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if modules:
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self.providers.append(provider)
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def addAction(self, callback: typing.Callable) -> str:
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command = f"{self.actionIndex:x}"
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self.actions[command] = callback
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self.actionIndex += 1
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return command
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def removeAction(self, command: str) -> None:
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del self.actions[command]
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class Provider:
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def __init__(self) -> None:
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self.modules: list[Module] = list()
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async def run(self) -> None:
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# Not a NotImplementedError, otherwise can't combine all classes
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pass
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class MirrorProvider(Provider):
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def __init__(self) -> None:
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super().__init__()
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self.module: Module
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async def run(self) -> None:
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await super().run()
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self.module = self.modules[0]
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for module in self.modules[1:]:
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module.mirror(self.module)
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class SingleSectionProvider(MirrorProvider):
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async def run(self) -> None:
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await super().run()
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self.section = Section(parent=self.module)
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class StaticProvider(SingleSectionProvider):
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def __init__(self, text: str) -> None:
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self.text = text
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async def run(self) -> None:
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await super().run()
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self.section.setText(self.text)
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class StatefulSection(Section):
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def __init__(self, parent: Module, sortKey: Sortable = 0) -> None:
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super().__init__(parent=parent, sortKey=sortKey)
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self.state = 0
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self.numberStates: int
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self.setAction(Button.CLICK_LEFT, self.incrementState)
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self.setAction(Button.CLICK_RIGHT, self.decrementState)
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def incrementState(self) -> None:
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self.state += 1
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self.changeState()
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def decrementState(self) -> None:
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self.state -= 1
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self.changeState()
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def setChangedState(self, callback: typing.Callable) -> None:
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self.callback = callback
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def changeState(self) -> None:
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self.state %= self.numberStates
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self.bar.taskGroup.create_task(self.callback())
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class SingleStatefulSectionProvider(MirrorProvider):
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async def run(self) -> None:
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await super().run()
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self.section = StatefulSection(parent=self.module)
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class PeriodicProvider(Provider):
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async def init(self) -> None:
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pass
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async def loop(self) -> None:
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raise NotImplementedError()
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@classmethod
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async def task(cls, bar: Bar) -> None:
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providers = list()
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for provider in bar.providers:
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if isinstance(provider, PeriodicProvider):
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providers.append(provider)
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await provider.init()
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while True:
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# TODO Block bar update during the periodic update of the loops
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loops = [provider.loop() for provider in providers]
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asyncio.gather(*loops)
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now = datetime.datetime.now()
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# Hardcoded to 1 second... not sure if we want some more than that,
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# and if the logic to check if a task should run would be a win
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# compared to the task itself
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remaining = 1 - now.microsecond / 1000000
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await asyncio.sleep(remaining)
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async def run(self) -> None:
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await super().run()
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for module in self.modules:
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bar = module.getFirstParentOfType(Bar)
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assert bar
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if not bar.periodicProviderTask:
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bar.periodicProviderTask = PeriodicProvider.task(bar)
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bar.addLongRunningTask(bar.periodicProviderTask)
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class PeriodicStatefulProvider(SingleStatefulSectionProvider, PeriodicProvider):
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async def run(self) -> None:
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await super().run()
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self.section.setChangedState(self.loop)
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# Providers
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class I3ModeProvider(SingleSectionProvider):
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def on_mode(self, i3: i3ipc.Connection, e: i3ipc.Event) -> None:
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self.section.setText(None if e.change == "default" else e.change)
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async def run(self) -> None:
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await super().run()
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i3 = await i3ipc.aio.Connection(auto_reconnect=True).connect()
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i3.on(i3ipc.Event.MODE, self.on_mode)
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await i3.main()
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class I3WindowTitleProvider(SingleSectionProvider):
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# TODO FEAT To make this available from start, we need to find the
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# `focused=True` element following the `focus` array
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def on_window(self, i3: i3ipc.Connection, e: i3ipc.Event) -> None:
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self.section.setText(e.container.name)
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async def run(self) -> None:
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await super().run()
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i3 = await i3ipc.aio.Connection(auto_reconnect=True).connect()
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i3.on(i3ipc.Event.WINDOW, self.on_window)
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await i3.main()
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class I3WorkspacesProvider(Provider):
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# TODO Custom names
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# TODO Colors
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async def updateWorkspaces(self, i3: i3ipc.Connection) -> None:
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"""
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Since the i3 IPC interface cannot really tell you by events
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when workspaces get invisible or not urgent anymore.
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Relying on those exclusively would require reimplementing some of i3 logic.
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Fetching all the workspaces on event looks ugly but is the most maintainable.
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Times I tried to challenge this and failed: 2.
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"""
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workspaces = await i3.get_workspaces()
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for workspace in workspaces:
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module = self.modulesFromOutput[workspace.output]
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if workspace.num in self.sections:
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section = self.sections[workspace.num]
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if section.parent != module:
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section.unsetParent()
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section.setParent(module)
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else:
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section = Section(parent=module, sortKey=workspace.num)
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self.sections[workspace.num] = section
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def generate_switch_workspace(num: int) -> typing.Callable:
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def switch_workspace() -> None:
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self.bar.taskGroup.create_task(
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i3.command(f"workspace number {num}")
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)
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return switch_workspace
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section.setAction(
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Button.CLICK_LEFT, generate_switch_workspace(workspace.num)
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)
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name = workspace.name
|
|
if workspace.urgent:
|
|
name = f"{name} !"
|
|
elif workspace.focused:
|
|
name = f"{name} +"
|
|
elif workspace.visible:
|
|
name = f"{name} *"
|
|
section.setText(name)
|
|
workspacesNums = set(workspace.num for workspace in workspaces)
|
|
for num, section in self.sections.items():
|
|
if num not in workspacesNums:
|
|
# This should delete the Section but it turned out to be hard
|
|
section.setText(None)
|
|
|
|
def onWorkspaceChange(
|
|
self, i3: i3ipc.Connection, e: i3ipc.Event | None = None
|
|
) -> None:
|
|
# Cancelling the task doesn't seem to prevent performance double-events
|
|
self.bar.taskGroup.create_task(self.updateWorkspaces(i3))
|
|
|
|
def __init__(
|
|
self,
|
|
) -> None:
|
|
super().__init__()
|
|
|
|
self.sections: dict[int, Section] = dict()
|
|
self.modulesFromOutput: dict[str, Module] = dict()
|
|
self.bar: Bar
|
|
|
|
async def run(self) -> None:
|
|
for module in self.modules:
|
|
screen = module.getFirstParentOfType(Screen)
|
|
output = screen.output
|
|
self.modulesFromOutput[output] = module
|
|
self.bar = module.bar
|
|
|
|
i3 = await i3ipc.aio.Connection(auto_reconnect=True).connect()
|
|
i3.on(i3ipc.Event.WORKSPACE, self.onWorkspaceChange)
|
|
self.onWorkspaceChange(i3)
|
|
await i3.main()
|
|
|
|
|
|
class NetworkProviderSection(StatefulSection):
|
|
def __init__(self, parent: Module, iface: str, provider: "NetworkProvider") -> None:
|
|
super().__init__(parent=parent, sortKey=iface)
|
|
self.iface = iface
|
|
self.provider = provider
|
|
|
|
self.ignore = False
|
|
self.icon = "?"
|
|
self.wifi = False
|
|
if iface == "lo":
|
|
self.ignore = True
|
|
elif iface.startswith("eth") or iface.startswith("enp"):
|
|
if "u" in iface:
|
|
self.icon = ""
|
|
else:
|
|
self.icon = ""
|
|
elif iface.startswith("wlan") or iface.startswith("wl"):
|
|
self.icon = ""
|
|
self.wifi = True
|
|
elif (
|
|
iface.startswith("tun") or iface.startswith("tap") or iface.startswith("wg")
|
|
):
|
|
self.icon = ""
|
|
elif iface.startswith("docker"):
|
|
self.icon = ""
|
|
elif iface.startswith("veth"):
|
|
self.icon = ""
|
|
elif iface.startswith("vboxnet"):
|
|
self.icon = ""
|
|
self.numberStates = 5 if self.wifi else 4
|
|
self.state = 1 if self.wifi else 0
|
|
|
|
self.setChangedState(self.update)
|
|
|
|
async def update(self) -> None:
|
|
if self.ignore or not self.provider.if_stats[self.iface].isup:
|
|
self.setText(None)
|
|
return
|
|
text = self.icon
|
|
|
|
state = self.state + (0 if self.wifi else 1) # SSID
|
|
if self.wifi and state >= 1:
|
|
cmd = ["iwgetid", self.iface, "--raw"]
|
|
proc = await asyncio.create_subprocess_exec(
|
|
*cmd, stdout=asyncio.subprocess.PIPE
|
|
)
|
|
stdout, stderr = await proc.communicate()
|
|
text += f" {stdout.decode().strip()}"
|
|
|
|
if state >= 2: # Address
|
|
for address in self.provider.if_addrs[self.iface]:
|
|
if address.family == socket.AF_INET:
|
|
net = ipaddress.IPv4Network(
|
|
(address.address, address.netmask), strict=False
|
|
)
|
|
text += f" {net.with_prefixlen}"
|
|
break
|
|
|
|
if state >= 3: # Speed
|
|
prevRecv = self.provider.prev_io_counters[self.iface].bytes_recv
|
|
recv = self.provider.io_counters[self.iface].bytes_recv
|
|
prevSent = self.provider.prev_io_counters[self.iface].bytes_sent
|
|
sent = self.provider.io_counters[self.iface].bytes_sent
|
|
dt = self.provider.time - self.provider.prev_time
|
|
|
|
recvDiff = (recv - prevRecv) / dt
|
|
sentDiff = (sent - prevSent) / dt
|
|
text += f" ↓{humanSize(recvDiff)}↑{humanSize(sentDiff)}"
|
|
|
|
if state >= 4: # Counter
|
|
text += f" ⇓{humanSize(recv)}⇑{humanSize(sent)}"
|
|
|
|
self.setText(text)
|
|
|
|
|
|
class NetworkProvider(MirrorProvider, PeriodicProvider):
|
|
def __init__(self) -> None:
|
|
super().__init__()
|
|
self.sections: dict[str, NetworkProviderSection] = dict()
|
|
|
|
async def init(self) -> None:
|
|
loop = asyncio.get_running_loop()
|
|
self.time = loop.time()
|
|
self.io_counters = psutil.net_io_counters(pernic=True)
|
|
|
|
async def loop(self) -> None:
|
|
loop = asyncio.get_running_loop()
|
|
async with asyncio.TaskGroup() as tg:
|
|
self.prev_io_counters = self.io_counters
|
|
self.prev_time = self.time
|
|
# On-demand would only benefit if_addrs:
|
|
# stats are used to determine display,
|
|
# and we want to keep previous io_counters
|
|
# so displaying stats is ~instant.
|
|
self.time = loop.time()
|
|
self.if_stats = psutil.net_if_stats()
|
|
self.if_addrs = psutil.net_if_addrs()
|
|
self.io_counters = psutil.net_io_counters(pernic=True)
|
|
|
|
for iface in self.if_stats:
|
|
section = self.sections.get(iface)
|
|
if not section:
|
|
section = NetworkProviderSection(
|
|
parent=self.module, iface=iface, provider=self
|
|
)
|
|
self.sections[iface] = section
|
|
|
|
tg.create_task(section.update())
|
|
for iface, section in self.sections.items():
|
|
if iface not in self.if_stats:
|
|
section.setText(None)
|
|
|
|
async def onStateChange(self, section: StatefulSection) -> None:
|
|
assert isinstance(section, NetworkProviderSection)
|
|
await section.update()
|
|
|
|
|
|
class TimeProvider(PeriodicStatefulProvider):
|
|
FORMATS = ["%H:%M", "%m-%d %H:%M:%S", "%a %y-%m-%d %H:%M:%S"]
|
|
|
|
async def init(self) -> None:
|
|
self.section.state = 1
|
|
self.section.numberStates = len(self.FORMATS)
|
|
|
|
async def loop(self) -> None:
|
|
now = datetime.datetime.now()
|
|
format = self.FORMATS[self.section.state]
|
|
self.section.setText(now.strftime(format))
|
|
|
|
|
|
async def main() -> None:
|
|
bar = Bar()
|
|
dualScreen = len(bar.children) > 1
|
|
|
|
bar.addProvider(I3ModeProvider(), alignment=Alignment.LEFT)
|
|
bar.addProvider(I3WorkspacesProvider(), alignment=Alignment.LEFT)
|
|
if dualScreen:
|
|
bar.addProvider(
|
|
I3WindowTitleProvider(), screenNum=0, alignment=Alignment.CENTER
|
|
)
|
|
bar.addProvider(
|
|
StaticProvider(text="mpris"),
|
|
screenNum=1 if dualScreen else None,
|
|
alignment=Alignment.CENTER,
|
|
)
|
|
|
|
bar.addProvider(StaticProvider("C L M T B"), alignment=Alignment.RIGHT)
|
|
bar.addProvider(
|
|
StaticProvider("pulse"),
|
|
screenNum=1 if dualScreen else None,
|
|
alignment=Alignment.RIGHT,
|
|
)
|
|
bar.addProvider(
|
|
NetworkProvider(),
|
|
screenNum=0 if dualScreen else None,
|
|
alignment=Alignment.RIGHT,
|
|
)
|
|
bar.addProvider(TimeProvider(), alignment=Alignment.RIGHT)
|
|
|
|
await bar.run()
|
|
|
|
|
|
asyncio.run(main())
|