| from time import monotonic |
|
|
| from textual.app import App, ComposeResult |
| from textual.containers import Container |
| from textual.reactive import reactive |
| from textual.widgets import Button, Header, Footer, Static |
|
|
|
|
| class TimeDisplay(Static): |
| """A widget to display elapsed time.""" |
|
|
| start_time = reactive(monotonic) |
| time = reactive(0.0) |
|
|
| def on_mount(self) -> None: |
| """Event handler called when widget is added to the app.""" |
| self.set_interval(1 / 60, self.update_time) |
|
|
| def update_time(self) -> None: |
| """Method to update the time to the current time.""" |
| self.time = monotonic() - self.start_time |
|
|
| def watch_time(self, time: float) -> None: |
| """Called when the time attribute changes.""" |
| minutes, seconds = divmod(time, 60) |
| hours, minutes = divmod(minutes, 60) |
| self.update(f"{hours:02,.0f}:{minutes:02.0f}:{seconds:05.2f}") |
|
|
|
|
| class Stopwatch(Static): |
| """A stopwatch widget.""" |
|
|
| def on_button_pressed(self, event: Button.Pressed) -> None: |
| """Event handler called when a button is pressed.""" |
| if event.button.id == "start": |
| self.add_class("started") |
| elif event.button.id == "stop": |
| self.remove_class("started") |
|
|
| def compose(self) -> ComposeResult: |
| """Create child widgets of a stopwatch.""" |
| yield Button("Start", id="start", variant="success") |
| yield Button("Stop", id="stop", variant="error") |
| yield Button("Reset", id="reset") |
| yield TimeDisplay() |
|
|
|
|
| class StopwatchApp(App): |
| """A Textual app to manage stopwatches.""" |
|
|
| CSS_PATH = "stopwatch04.css" |
| BINDINGS = [("d", "toggle_dark", "Toggle dark mode")] |
|
|
| def compose(self) -> ComposeResult: |
| """Create child widgets for the app.""" |
| yield Header() |
| yield Footer() |
| yield Container(Stopwatch(), Stopwatch(), Stopwatch()) |
|
|
| def action_toggle_dark(self) -> None: |
| """An action to toggle dark mode.""" |
| self.dark = not self.dark |
|
|
|
|
| if __name__ == "__main__": |
| app = StopwatchApp() |
| app.run() |
|
|
