gpui_base/
element_ext.rs

1use gpui::{App, Bounds, IntoElement, ParentElement, Pixels, Styled as _, Window, canvas};
2
3use crate::TextSelectionScopeId;
4
5/// Extends a GPUI parent element with post-layout prepaint observation.
6pub trait ElementExt: ParentElement + Sized {
7    /// Marks this element subtree as belonging to a text-selection scope.
8    fn text_selection_scope(self, scope: TextSelectionScopeId) -> impl IntoElement
9    where
10        Self: IntoElement,
11    {
12        crate::text_selection::text_selection_scope(scope, self)
13    }
14
15    /// Invokes `callback` during prepaint with this element's resolved bounds.
16    fn on_prepaint<F>(self, callback: F) -> Self
17    where
18        F: FnOnce(Bounds<Pixels>, &mut Window, &mut App) + 'static,
19    {
20        self.child(
21            canvas(
22                move |bounds, window, cx| callback(bounds, window, cx),
23                |_, _, _, _| {},
24            )
25            .absolute()
26            .size_full(),
27        )
28    }
29}
30
31impl<T: ParentElement> ElementExt for T {}
gpui_base/element_ext.rs

gpui_base/
element_ext.rs
