From c70080dd686738ab6272dd0b3c421c6621e86e34 Mon Sep 17 00:00:00 2001
From: Blaž Hrastnik
Date: Fri, 5 Feb 2021 14:42:56 +0900
Subject: Work around rendering errors for positions offscreen.

---
 helix-view/src/tree.rs | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

(limited to 'helix-view/src')

diff --git a/helix-view/src/tree.rs b/helix-view/src/tree.rs
index 100d8a54..784fea3f 100644
--- a/helix-view/src/tree.rs
+++ b/helix-view/src/tree.rs
@@ -152,16 +152,27 @@ impl Tree {
                     match container.layout {
                         Layout::Vertical => unimplemented!(),
                         Layout::Horizontal => {
-                            let len = container.children.len() as u16;
+                            let len = container.children.len();
 
-                            let width = area.width / len;
+                            let width = area.width / len as u16;
 
                             let mut child_x = area.x;
 
-                            for (_i, child) in container.children.iter().enumerate() {
-                                let area = Rect::new(child_x, area.y, width, area.height);
+                            for (i, child) in container.children.iter().enumerate() {
+                                let mut area = Rect::new(
+                                    child_x,
+                                    container.area.y,
+                                    width,
+                                    container.area.height,
+                                );
                                 child_x += width;
 
+                                // last child takes the remaining width because we can get uneven
+                                // space from rounding
+                                if i == len - 1 {
+                                    area.width = container.area.x + container.area.width - area.x;
+                                }
+
                                 self.stack.push((*child, area));
                             }
                         }
-- 
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