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101 lines
3.1 KiB
Python
101 lines
3.1 KiB
Python
from time import monotonic
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from textual.app import App, ComposeResult
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from textual.layout import Container
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from textual.reactive import Reactive
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from textual.widgets import Button, Header, Footer, Static
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class TimeDisplay(Static):
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"""Displays the time."""
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time = Reactive(0.0)
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def watch_time(self, time: float) -> None:
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"""Called when time_delta changes."""
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minutes, seconds = divmod(time, 60)
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hours, minutes = divmod(minutes, 60)
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self.update(f"{hours:02.0f}:{minutes:02.0f}:{seconds:05.2f}")
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class Stopwatch(Static):
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"""The timer widget (display + buttons)."""
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start_time = Reactive(0.0)
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total = Reactive(0.0)
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started = Reactive(False)
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def on_mount(self) -> None:
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"""Called when widget is first added."""
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self.update_timer = self.set_interval(1 / 30, self.update_elapsed, pause=True)
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def update_elapsed(self) -> None:
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"""Updates elapsed time."""
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self.query_one(TimeDisplay).time = (
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self.total + monotonic() - self.start_time if self.started else self.total
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)
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def compose(self) -> ComposeResult:
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"""Composes the timer widget."""
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yield Button("Start", id="start", variant="success")
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yield Button("Stop", id="stop", variant="error")
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yield TimeDisplay()
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yield Button("Reset", id="reset")
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def watch_started(self, started: bool) -> None:
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"""Called when the 'started' attribute changes."""
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if started:
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self.start_time = monotonic()
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self.update_timer.resume()
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self.add_class("started")
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self.query_one("#stop").focus()
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else:
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self.update_timer.pause()
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self.total += monotonic() - self.start_time
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self.remove_class("started")
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self.query_one("#start").focus()
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def on_button_pressed(self, event: Button.Pressed) -> None:
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"""Called when a button is pressed."""
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button_id = event.button.id
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self.started = button_id == "start"
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if button_id == "reset":
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self.total = 0.0
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self.update_elapsed()
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class StopwatchApp(App):
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"""Manage the timers."""
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def on_load(self) -> None:
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"""Called when the app first loads."""
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self.bind("a", "add_timer", description="Add")
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self.bind("r", "remove_timer", description="Remove")
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self.bind("d", "toggle_dark", description="Dark mode")
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def compose(self) -> ComposeResult:
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"""Called to ad widgets to the app."""
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yield Header()
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yield Footer()
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yield Container(Stopwatch(), Stopwatch(), Stopwatch(), id="timers")
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def action_add_timer(self) -> None:
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"""An action to add a timer."""
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new_timer = Stopwatch()
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self.query_one("#timers").mount(new_timer)
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new_timer.scroll_visible()
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def action_remove_timer(self) -> None:
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"""Called to remove a timer."""
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timers = self.query("#timers TimerWidget")
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if timers:
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timers.last().remove()
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def action_toggle_dark(self) -> None:
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self.dark = not self.dark
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app = StopwatchApp(css_path="stopwatch.css")
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if __name__ == "__main__":
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app.run()
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