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ui: Be smarter about centering previews

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Try centering the whole block. If the block is too big for the viewport,
then make sure that the first line is within the preview.
This commit is contained in:
Blaž Hrastnik 2021-09-08 14:19:25 +09:00
parent f871d318c0
commit 2ce87968cd
1 changed files with 7 additions and 3 deletions
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10
helix-term/src/ui/picker.rs
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@ -124,9 +124,13 @@ impl<T: 'static> Component for FilePicker<T> {
}) {
// align to middle
let first_line = line
.map(|(start, _)| start)
.unwrap_or(0)
.saturating_sub(inner.height as usize / 2);
.map(|(start, end)| {
let height = end.saturating_sub(start) + 1;
let middle = start + (height.saturating_sub(1) / 2);
middle.saturating_sub(inner.height as usize / 2).min(start)
})
.unwrap_or(0);
let offset = Position::new(first_line, 0);
let highlights = EditorView::doc_syntax_highlights(