From f474c76e193d9087e3ede4b60aa14ca2729032c7 Mon Sep 17 00:00:00 2001
From: Kenta Iwasaki <kenta@lithdew.net>
Date: Sun, 31 May 2020 21:38:56 +0900
Subject: [PATCH] layout: force constraint that width and height are
 non-negative

---
 src/layout.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/layout.rs b/src/layout.rs
index 5410a72..aa14182 100644
--- a/src/layout.rs
+++ b/src/layout.rs
@@ -209,6 +209,8 @@ fn split(area: Rect, layout: &Layout) -> Vec<Rect> {
     let mut ccs: Vec<CassowaryConstraint> =
         Vec::with_capacity(elements.len() * 4 + layout.constraints.len() * 6);
     for elt in &elements {
+        ccs.push(elt.width | GE(REQUIRED) | 0f64);
+        ccs.push(elt.height | GE(REQUIRED) | 0f64);
         ccs.push(elt.left() | GE(REQUIRED) | f64::from(dest_area.left()));
         ccs.push(elt.top() | GE(REQUIRED) | f64::from(dest_area.top()));
         ccs.push(elt.right() | LE(REQUIRED) | f64::from(dest_area.right()));