aboutsummaryrefslogtreecommitdiff
path: root/helix-term/src/ui/statusline.rs
diff options
context:
space:
mode:
Diffstat (limited to 'helix-term/src/ui/statusline.rs')
-rw-r--r--helix-term/src/ui/statusline.rs19
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;