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use ratatui::{
layout::{Constraint, Layout, Rect},
style::Color,
};
use crate::app::state::Palette;
pub(super) fn panel_contrast_fg(palette: &Palette) -> Color {
match palette.panel_bg {
Color::Reset => palette.surface_dim,
color => color,
}
}
pub(crate) fn centered_popup_rect(area: Rect, popup_width: u16, popup_height: u16) -> Option<Rect> {
let popup_width = popup_width.min(area.width.saturating_sub(4));
let popup_height = popup_height.min(area.height.saturating_sub(2));
if popup_width < 4 || popup_height < 4 {
return None;
}
Some(Rect::new(
area.x + area.width.saturating_sub(popup_width) / 2,
area.y + area.height.saturating_sub(popup_height) / 2,
popup_width,
popup_height,
))
}
#[derive(Debug, Clone, Copy)]
pub(crate) struct ModalStackAreas {
pub header: Rect,
pub content: Rect,
pub footer: Option<Rect>,
pub actions: Option<Rect>,
}
pub(crate) fn modal_stack_areas(
inner: Rect,
header_height: u16,
footer_height: u16,
actions_height: u16,
gap: u16,
) -> ModalStackAreas {
#[derive(Clone, Copy)]
enum Slot {
Header,
Content,
Footer,
Actions,
}
let mut constraints = Vec::new();
let mut slots = Vec::new();
let mut push = |slot: Slot, constraint: Constraint| {
if !slots.is_empty() {
constraints.push(Constraint::Length(gap));
}
constraints.push(constraint);
slots.push(slot);
};
push(Slot::Header, Constraint::Length(header_height));
push(Slot::Content, Constraint::Min(0));
if footer_height > 0 {
push(Slot::Footer, Constraint::Length(footer_height));
}
if actions_height > 0 {
push(Slot::Actions, Constraint::Length(actions_height));
}
let areas = Layout::vertical(constraints).split(inner);
let mut result = ModalStackAreas {
header: Rect::default(),
content: Rect::default(),
footer: None,
actions: None,
};
for (slot, area) in slots.into_iter().zip(areas.iter().step_by(2).copied()) {
match slot {
Slot::Header => result.header = area,
Slot::Content => result.content = area,
Slot::Footer => result.footer = Some(area),
Slot::Actions => result.actions = Some(area),
}
}
result
}
fn action_button_width(hint: Option<&str>, label: &str) -> u16 {
match hint {
Some(hint) => format!(" {hint} {label} ").chars().count() as u16,
None => format!(" {label} ").chars().count() as u16,
}
}
pub(crate) fn close_button_rect(area: Rect) -> Rect {
let width = action_button_width(Some("esc"), "close");
Rect::new(area.x + area.width.saturating_sub(width), area.y, width, 1)
}
pub(crate) fn continue_button_rect(area: Rect) -> Rect {
Rect::new(
area.x,
area.y,
action_button_width(Some("↵"), "continue"),
1,
)
}
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