migrations/egui
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Fix(egui): improve underline drawing

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This commit is contained in:
umajho
2026-04-08 17:49:37 +08:00
parent b55bd5c19f
commit 97ef386b7f
1 changed files with 45 additions and 21 deletions
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66
crates/egui/src/text_selection/visuals.rs
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@@ -151,20 +151,53 @@ pub fn paint_ime_preedit_text_visuals(
color: active_underline_stroke.color.linear_multiply(0.5),
};
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start),
galley.layout_from_cursor(preedit_range.end),
inactive_underline_stroke,
);
if let Some(relative_active_range) = &relative_active_range
&& !relative_active_range.is_empty()
{
if relative_active_range.start.index > 0 {
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start),
galley.layout_from_cursor(preedit_range.start + relative_active_range.start.index),
inactive_underline_stroke,
);
}
let Some(relative_active_range) = relative_active_range else {
return;
};
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start + relative_active_range.start.index),
galley.layout_from_cursor(preedit_range.start + relative_active_range.end.index),
active_underline_stroke,
);
if relative_active_range.is_empty() {
if relative_active_range.end < preedit_range.end - preedit_range.start.index {
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start + relative_active_range.end.index),
galley.layout_from_cursor(preedit_range.end),
inactive_underline_stroke,
);
}
} else {
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start),
galley.layout_from_cursor(preedit_range.end),
inactive_underline_stroke,
);
}
if let Some(relative_active_range) = relative_active_range
&& relative_active_range.is_empty()
{
let active_cursor = preedit_range.start + relative_active_range.start.index;
let cursor_rect = cursor_rect(galley, &active_cursor, row_height);
@@ -174,15 +207,6 @@ pub fn paint_ime_preedit_text_visuals(
cursor_rect.translate(pos.to_vec2()),
time_since_last_interaction,
);
} else {
paint_underlines(
pos,
painter,
galley,
galley.layout_from_cursor(preedit_range.start + relative_active_range.start.index),
galley.layout_from_cursor(preedit_range.start + relative_active_range.end.index),
inactive_underline_stroke,
);
}
}