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organize shortcut list into a grid-like-pattern

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nyx 2024-10-01 18:39:35 -04:00
parent d3a801d49b
commit 17ed589f4e
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GPG Key ID: 9924455A3BB7D06C
1 changed files with 20 additions and 29 deletions
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49
tui/src/hint.rs
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@ -28,40 +28,31 @@ pub fn create_shortcut_list(
render_width: u16,
) -> Box<[Line<'static>]> {
let hints = shortcuts.into_iter().collect::<Box<[Shortcut]>>();
let shortcut_spans: Vec<Vec<Span<'static>>> = hints.iter().map(|h| h.to_spans()).collect();
let mut shortcut_spans: Vec<Vec<Span<'static>>> = hints.iter().map(|h| h.to_spans()).collect();
let max_shortcut_width = shortcut_spans
.iter()
.map(|s| span_vec_len(s))
.max()
.unwrap_or(0);
let mut lines: Vec<Line<'static>> = vec![];
let columns = (render_width as usize / (max_shortcut_width + 4)).max(1);
let rows = (shortcut_spans.len() + columns - 1) / columns;
loop {
let split_idx = shortcut_spans
.iter()
.scan(0usize, |total_len, s| {
// take at least one so that we guarantee that we drain the list
// otherwise, this might lock up if there's a shortcut that exceeds the window width
if *total_len == 0 {
*total_len += span_vec_len(s) + 4;
Some(())
} else {
*total_len += span_vec_len(s);
if *total_len > render_width as usize {
None
} else {
*total_len += 4;
Some(())
}
}
})
.count();
let mut lines: Vec<Line<'static>> = Vec::new();
let rest = shortcut_spans.split_off(split_idx);
lines.push(add_spacing(shortcut_spans));
if rest.is_empty() {
break;
} else {
shortcut_spans = rest;
for row in 0..rows {
let mut row_spans = Vec::new();
for col in 0..columns {
let index = row * columns + col;
if index < shortcut_spans.len() {
let mut span = shortcut_spans[index].clone();
let padding = max_shortcut_width - span_vec_len(&span);
span.push(Span::raw(" ".repeat(padding)));
row_spans.push(span);
}
}
lines.push(add_spacing(row_spans));
}
lines.into_boxed_slice()