simplified overflow-safe subtraction

2019-04-09 22:00:54 +02:00
parent 534ccc904f
commit 95370b23c0
1 changed files with 2 additions and 2 deletions
--- a/src/ui/listview.rs
+++ b/src/ui/listview.rs
@@ -86,9 +86,9 @@ impl<I: ListItem> View for ListView<I> {
            });

            // draw ".." to indicate a cut off string
-            let max_length = printer.size.x.checked_sub(right.width() + 1).unwrap_or(0);
+            let max_length = printer.size.x.saturating_sub(right.width() + 1);
            if max_length < left.width() {
-                let offset = max_length.checked_sub(1).unwrap_or(0);
+                let offset = max_length.saturating_sub(1);
                printer.with_color(style, |printer| {
                    printer.print((offset, 0), "..");
                });