1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

use tui::layout::{Layout, Rect, Constraint, Direction};

/// helper function to create a centered rect using up certain percentage of the available rect `r`
pub fn centered_rect(percent_x: u16, y_size: u16, r: Rect) -> Rect {
    let popup_layout = Layout::default()
        .direction(Direction::Vertical)
        .constraints(
            [
                Constraint::Length(i32::max((r.height as i32 - y_size as i32) / 2, 0) as u16),
                Constraint::Length(y_size),
                Constraint::Length(i32::max((r.height as i32 - y_size as i32) / 2, 0) as u16),
            ]
            .as_ref(),
        )
        .split(r);

    Layout::default()
        .direction(Direction::Horizontal)
        .constraints(
            [
                Constraint::Percentage((100 - percent_x) / 2),
                Constraint::Percentage(percent_x),
                Constraint::Percentage((100 - percent_x) / 2),
            ]
            .as_ref(),
        )
        .split(popup_layout[1])[1]
}