Update scroll_area.rs

Author: rustbasic

crates/egui/src/containers/scroll_area.rs

@@ -960,6 +960,10 @@ impl Prepared {
             let main_range = Rangef::new(inner_rect.min[d], inner_rect.max[d]);
 
             // Margin on either side of the scroll bar:
+            let inner_margin = match scroll_style.floating {
+                true => 0.0,
+                false => show_factor * scroll_style.bar_inner_margin,
+            };
             let outer_margin = show_factor * scroll_style.bar_outer_margin;
 
             let mut max_cross = outer_rect.max[1 - d] - outer_margin;
@@ -1005,12 +1009,12 @@ impl Prepared {
 
             let outer_scroll_rect = if d == 0 {
                 Rect::from_min_max(
-                    pos2(inner_rect.left(), cross.min),
+                    pos2(inner_rect.left(), cross.min - inner_margin),
                     pos2(inner_rect.right(), cross.max),
                 )
             } else {
                 Rect::from_min_max(
-                    pos2(cross.min, inner_rect.top()),
+                    pos2(cross.min - inner_margin, inner_rect.top()),
                     pos2(cross.max, inner_rect.bottom()),
                 )
             };