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correctly center items in picker preview

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This commit is contained in:
Pascal Kuthe 2023-09-12 21:12:36 +02:00 • committed by Blaž Hrastnik
parent e9d0bd7aef
commit 13d4463e41
1 changed files with 24 additions and 12 deletions
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36
helix-term/src/ui/picker.rs
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@ -710,18 +710,30 @@ impl<T: Item + 'static> Picker<T> {
};
let mut offset = ViewPosition::default();
if let Some(range) = range {
let text_fmt = doc.text_format(inner.width, None);
let annotations = TextAnnotations::default();
(offset.anchor, offset.vertical_offset) = char_idx_at_visual_offset(
doc.text().slice(..),
doc.text().line_to_char(range.0),
// align to middle
-(inner.height as isize / 2),
0,
&text_fmt,
&annotations,
);
if let Some((start_line, end_line)) = range {
let height = end_line - start_line;
let text = doc.text().slice(..);
let start = text.line_to_char(start_line);
let middle = text.line_to_char(start_line + height / 2);
if height < inner.height as usize {
let text_fmt = doc.text_format(inner.width, None);
let annotations = TextAnnotations::default();
(offset.anchor, offset.vertical_offset) = char_idx_at_visual_offset(
text,
middle,
// align to middle
-(inner.height as isize / 2),
0,
&text_fmt,
&annotations,
);
if start < offset.anchor {
offset.anchor = start;
offset.vertical_offset = 0;
}
} else {
offset.anchor = start;
}
}
let mut highlights = EditorView::doc_syntax_highlights(