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from textual import on
from textual.app import App, ComposeResult
from textual.containers import Horizontal
from textual.widgets import Button, Footer
class RGBApp(App):
CSS = """
Screen {
align: center middle;
}
Horizontal {
width: auto;
height: auto;
}
"""
BINDINGS = [
("r", "switch_color('red')", "Go Red"),
("g", "switch_color('green')", "Go Green"),
("b", "switch_color('blue')", "Go Blue"),
]
def compose(self) -> ComposeResult:
with Horizontal():
yield Button("Red", id="red")
yield Button("Green", id="green")
yield Button("Blue", id="blue")
yield Footer()
@on(Button.Pressed)
def pressed_button(self, event: Button.Pressed) -> None:
assert event.button.id is not None
self.action_switch_color(event.button.id)
def action_switch_color(self, color: str) -> None:
self.screen.styles.background = color
if __name__ == "__main__":
app = RGBApp()
app.run()
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