Running code on terminal resize after layout is redrawn

[SkwalExe]

When using the on_resize event the function runs before the layout is redrawn. I need to run code when the terminal is resized but AFTER the layout has been redrawn (when the widgets' size are adjusted etc). Is it possible to do so?

[davep]

I don't know for sure, but probably the first place I'd look would be to see if call_after_refresh, made from on_resize, does the trick.

More generally, perhaps you could explain what it is you're wanting to do or why -- sometimes there might be a better approach to the core problem.

[SkwalExe]

I need to get a widget's size after the terminal resize. I dont know how I could implement a call_after_resize function...

[davep]

The suggestion was to call call_after_refresh from inside a on_resize. For example:

from textual.app import App, ComposeResult
from textual.widgets import Static

class WidgetSizeApp(App[None]):

    CSS = """
    #fr1 {
        height: 1fr;
    }
    #fr2 {
        height: 2fr;
    }
    """

    def compose(self) -> ComposeResult:
        yield Static(id="fr1")
        yield Static(id="fr2")

    def on_mount(self) -> None:
        self.call_after_refresh(self.show_sizes)

    def on_resize(self) -> None:
        self.call_after_refresh(self.show_sizes)

    def show_sizes(self) -> None:
        for widget in self.query(Static):
            widget.update(f"{widget.size!r}")

if __name__ == "__main__":
    WidgetSizeApp().run()

[davep]

Was this what you were after @SkwalExe?

[SkwalExe]

Yes, it worked, thank you for your help @davep !