Function centered_popup

crates/openshell-tui/src/ui/mod.rs:662–679

Center a popup rectangle within `area` using percentage-based width and an absolute height (in rows).

(percent_x: u16, height: u16, area: Rect)

/// Center a popup rectangle within `area` using percentage-based width and
/// an absolute height (in rows).
pub fn centered_popup(percent_x: u16, height: u16, area: Rect) -> Rect {
    let vert = Layout::default()
        .direction(Direction::Vertical)
        .constraints([
            Constraint::Percentage((100 - height.min(100)) / 2),
            Constraint::Length(height),
            Constraint::Percentage((100 - height.min(100)) / 2),
        ])
        .split(area);
    Layout::default()
        .direction(Direction::Horizontal)
        .constraints([
            Constraint::Percentage((100 - percent_x) / 2),
            Constraint::Percentage(percent_x),
            Constraint::Percentage((100 - percent_x) / 2),
        ])
        .split(vert[1])[1]
}