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fix(hit): move cursor to the logical end of mixed-bidi line

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Hojjat 2026-03-26 15:47:54 -06:00 • committed by Jeremy Soller
parent aa2c305039
commit e5926aec74
1 changed files with 11 additions and 9 deletions
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20
src/buffer.rs
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@ -1109,11 +1109,13 @@ impl Buffer {
new_cursor.affinity = new_cursor_affinity;
}
None => {
if let Some(glyph) = run.glyphs.last() {
// Position at end of line
new_cursor.index = glyph.end;
new_cursor.affinity = Affinity::Before;
}
// Click was past all glyphs in this visual run.
// Use the maximum glyph.end across all glyphs.
// this is the logical end of this visual line's byte coverage,
// correct for LTR, RTL, mixed-BiDi, and wrapped paragraphs.
let run_end = run.glyphs.iter().map(|g| g.end).max().unwrap_or(0);
new_cursor.index = run_end;
new_cursor.affinity = Affinity::Before;
}
}
@ -1121,10 +1123,10 @@ impl Buffer {
break;
} else if runs.peek().is_none() && y > run.line_y {
let mut new_cursor = Cursor::new(run.line_i, 0);
if let Some(glyph) = run.glyphs.last() {
new_cursor = run.cursor_from_glyph_right(glyph);
}
// Click below the last run: place cursor at the logical end of the
// line, regardless of paragraph direction or BiDi mixing.
let new_cursor =
Cursor::new_with_affinity(run.line_i, run.text.len(), Affinity::Before);
new_cursor_opt = Some(new_cursor);
}
}