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141 lines
4 KiB
Python
141 lines
4 KiB
Python
#!/usr/bin/env python3
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"""A tui stopwatch built w/textual adapted from their tutorial:
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https://github.com/Textualize/textual/tree/main/docs/examples/tutorial
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"""
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__import__("viv").use("textual")
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from time import monotonic
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from textual.app import App, ComposeResult
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from textual.containers import Container
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from textual.reactive import reactive
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from textual.widgets import Button, Footer, Header, Static
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class TimeDisplay(Static):
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"""A widget to display elapsed time."""
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start_time = reactive(monotonic)
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time = reactive(0.0)
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total = reactive(0.0)
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def on_mount(self) -> None:
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"""Event handler called when widget is added to the app."""
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self.update_timer = self.set_interval(1 / 60, self.update_time, pause=True)
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def update_time(self) -> None:
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"""Method to update time to current."""
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self.time = self.total + (monotonic() - self.start_time)
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def watch_time(self, time: float) -> None:
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"""Called when the time attribute 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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def start(self) -> None:
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"""Method to start (or resume) time updating."""
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self.start_time = monotonic()
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self.update_timer.resume()
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def stop(self):
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"""Method to stop the time display updating."""
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self.update_timer.pause()
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self.total += monotonic() - self.start_time
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self.time = self.total
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def reset(self):
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"""Method to reset the time display to zero."""
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self.total = 0
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self.time = 0
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class Stopwatch(Static):
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"""A stopwatch widget."""
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def on_button_pressed(self, event: Button.Pressed) -> None:
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"""Event handler called when a button is pressed."""
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button_id = event.button.id
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time_display = self.query_one(TimeDisplay)
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if button_id == "start":
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time_display.start()
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self.add_class("started")
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elif button_id == "stop":
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time_display.stop()
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self.remove_class("started")
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elif button_id == "reset":
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time_display.reset()
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def compose(self) -> ComposeResult:
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"""Create child widgets of a stopwatch."""
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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 Button("Reset", id="reset")
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yield TimeDisplay()
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class StopwatchApp(App):
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"""A Textual app to manage stopwatches."""
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# CSS_PATH = "stopwatch.css"
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DEFAULT_CSS = """
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Stopwatch {
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layout: horizontal;
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background: $boost;
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height: 5;
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min-width: 50;
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margin: 1;
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padding: 1;
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}
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TimeDisplay {
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content-align: center middle;
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text-opacity: 60%;
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height: 3;
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}
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Button { width: 16; }
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#start { dock: left; }
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#stop { dock: left; display: none; }
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#reset { dock: right; }
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.started {
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text-style: bold;
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background: $success;
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color: $text;
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}
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.started TimeDisplay { text-opacity: 100%; }
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.started #start { display: none }
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.started #stop { display: block }
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.started #reset { visibility: hidden }"""
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BINDINGS = [
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("d", "toggle_dark", "Toggle dark mode"),
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("a", "add_stopwatch", "Add"),
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("r", "remove_stopwatch", "Remove"),
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]
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def compose(self) -> ComposeResult:
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"""Called to add 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_stopwatch(self) -> None:
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"""An action to add a timer."""
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new_stopwatch = Stopwatch()
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self.query_one("#timers").mount(new_stopwatch)
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new_stopwatch.scroll_visible()
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def action_remove_stopwatch(self) -> None:
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"""Called to remove a timer."""
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timers = self.query("Stopwatch")
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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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"""An action to toggle dark mode."""
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self.dark = not self.dark
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if __name__ == "__main__":
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app = StopwatchApp()
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app.run()
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