ratatui_kit/hooks/
use_size.rs

1use crossterm::{event::Event, terminal};
2use ratatui::layout::Rect;
3
4use crate::{Hook, UseEvents, UseState};
5
6mod private {
7    pub trait Sealed {}
8    impl Sealed for crate::Hooks<'_, '_> {}
9}
10
11/// 获取终端当前尺寸，并在终端尺寸变化时更新，适合响应式布局。
12pub trait UseTerminalSize: private::Sealed {
13    fn use_terminal_size(&mut self) -> (u16, u16);
14}
15
16impl UseTerminalSize for crate::Hooks<'_, '_> {
17    fn use_terminal_size(&mut self) -> (u16, u16) {
18        let mut size = self.use_state(|| terminal::size().unwrap_or((0, 0)));
19
20        self.use_events(move |event| {
21            if let Event::Resize(width, height) = event {
22                size.set((width, height));
23            }
24        });
25
26        size.get()
27    }
28}
29
30/// 获取组件当前尺寸，但是是上一帧的尺寸
31pub trait UsePreviousSize: private::Sealed {
32    fn use_previous_size(&mut self) -> Rect;
33}
34
35pub struct UsePreviousSizeImpl {
36    size: Rect,
37}
38
39impl Default for UsePreviousSizeImpl {
40    fn default() -> Self {
41        Self::new()
42    }
43}
44
45impl UsePreviousSizeImpl {
46    pub fn new() -> Self {
47        UsePreviousSizeImpl {
48            size: Rect::default(),
49        }
50    }
51}
52
53impl Hook for UsePreviousSizeImpl {
54    fn pre_component_draw(&mut self, drawer: &mut crate::ComponentDrawer) {
55        self.size = drawer.area;
56    }
57}
58
59impl UsePreviousSize for crate::Hooks<'_, '_> {
60    fn use_previous_size(&mut self) -> Rect {
61        let hook = self.use_hook(UsePreviousSizeImpl::new);
62        hook.size
63    }
64}
ratatui_kit/hooks/use_size.rs

ratatui_kit/hooks/
use_size.rs
