editor/
layout.rs

1//! How the editor lays the document out.
2//!
3//! Installed once at boot like the image store, and read at paint: where the
4//! document's text sits is the app's decision, and this crate holds only what
5//! it defaults to.
6
7use gpui::{App, Global};
8
9/// What the editor lays the document out with.
10#[derive(Clone, Copy, Debug, PartialEq)]
11pub struct Layout {
12    /// How far the document's text sits inside the editor's own box, leaving
13    /// the drag handle somewhere to be. Anything laid out above or below the
14    /// editor takes the same measure to line up with its text; under the
15    /// handle's own 18px the handle sits over the text instead of beside it.
16    pub text_inset: f32,
17}
18
19impl Layout {
20    /// How the editor lays out, or [`Layout::default`] before anything is
21    /// installed. Mirrors [`theme::Theme::of`].
22    pub fn of(cx: &App) -> Self {
23        cx.try_global::<Installed>()
24            .map_or_else(Self::default, |installed| installed.0)
25    }
26}
27
28impl Default for Layout {
29    fn default() -> Self {
30        Self { text_inset: 22.0 }
31    }
32}
33
34struct Installed(Layout);
35
36impl Global for Installed {}
37
38/// `editor::set_layout(cx, my_layout)` — call once at boot.
39pub fn set_layout(cx: &mut App, layout: Layout) {
40    cx.set_global(Installed(layout));
41}
editor/layout.rs

editor/
layout.rs
