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Center the picker preview selection using visual lines (#7837)

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this way the preview always shows the selection even if lines were
wrapped
This commit is contained in:
Jesse Luehrs 2023-08-07 21:06:51 -04:00 committed by GitHub
parent c7e9e94f00
commit a7a145ad3d
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1 changed files with 15 additions and 15 deletions
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30
helix-term/src/ui/picker.rs
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@ -27,7 +27,7 @@ use std::{collections::HashMap, io::Read, path::PathBuf};
use crate::ui::{Prompt, PromptEvent};
use helix_core::{
movement::Direction, text_annotations::TextAnnotations,
char_idx_at_visual_offset, movement::Direction, text_annotations::TextAnnotations,
unicode::segmentation::UnicodeSegmentation, Position, Syntax,
};
use helix_view::{
@ -690,20 +690,20 @@ impl<T: Item + 'static> Picker<T> {
}
};
// align to middle
let first_line = range
.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 = ViewPosition {
anchor: doc.text().line_to_char(first_line),
horizontal_offset: 0,
vertical_offset: 0,
};
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,
);
}
let mut highlights = EditorView::doc_syntax_highlights(
doc,