diff options
| -rw-r--r-- | helix-term/src/ui/statusline.rs | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/helix-term/src/ui/statusline.rs b/helix-term/src/ui/statusline.rs index 79a66cc1..2939a257 100644 --- a/helix-term/src/ui/statusline.rs +++ b/helix-term/src/ui/statusline.rs @@ -93,11 +93,26 @@ pub fn render_statusline<'a>(context: &mut RenderContext, width: usize) -> Spans let mut statusline: Vec<Span> = vec![]; if center_area_width > 0 && total_space_required <= width { + // SAFETY: this subtraction cannot underflow because `left_area_width + center_area_width + right_area_width` + // is smaller than `total_space_required`, which is smaller than `width` in this branch. + let total_spacers = width - (left_area_width + center_area_width + right_area_width); + // This is how much padding space it would take on either side to align the center area to the middle. let center_margin = (width - center_area_width) / 2; + let left_spacers = if left_area_width < center_margin && right_area_width < center_margin { + // Align the center area to the middle if there is enough space on both sides. + center_margin - left_area_width + } else { + // Otherwise split the available space evenly and use it as margin. + // The center element won't be aligned to the middle but it will be evenly + // spaced between the left and right areas. + total_spacers / 2 + }; + let right_spacers = total_spacers - left_spacers; + statusline.append(&mut left); - statusline.push(" ".repeat(center_margin - left_area_width).into()); + statusline.push(" ".repeat(left_spacers).into()); statusline.append(&mut center); - statusline.push(" ".repeat(center_margin - right_area_width).into()); + statusline.push(" ".repeat(right_spacers).into()); statusline.append(&mut right); } else if right_area_width > 0 && sides_space_required <= width { let side_areas_width = left_area_width + right_area_width; |