From 15fe9d98808065ab7a7d0659e8d44c7a999175e4 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Mon, 16 Oct 2023 16:38:13 +0200
Subject: Fix Drawing artifact with radio buttons under Cairo (#792) - cont'd

---
 src/fl_round_box.cxx | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/fl_round_box.cxx b/src/fl_round_box.cxx
index d1ebdcb25..54c8ebb07 100644
--- a/src/fl_round_box.cxx
+++ b/src/fl_round_box.cxx
@@ -50,11 +50,17 @@ static void draw(int which, int x,int y,int w,int h, int inset, Fl_Color color)
       f(x, y+h-d, d, d, w<=h ? 180 : 90, w<=h ? 360 : 270);
     }
   } else if (which == UPPER_LEFT) {
-    f(x+w-d, y, d, d, 45, w<=h ? 180 : 90);
-    f(x, y+h-d, d, d, w<=h ? 180 : 90, 225);
+    if (w == h) f(x, y, d, d, 45, 225);
+    else {
+      f(x+w-d, y, d, d, 45, w<=h ? 180 : 90);
+      f(x, y+h-d, d, d, w<=h ? 180 : 90, 225);
+    }
   } else { // LOWER_RIGHT
-    f(x, y+h-d, d, d, 225, w<=h ? 360 : 270);
-    f(x+w-d, y, d, d, w<=h ? 360 : 270, 360+45);
+    if (w == h) f(x, y, d, d, 225, 405);
+    else {
+      f(x, y+h-d, d, d, 225, w<=h ? 360 : 270);
+      f(x+w-d, y, d, d, w<=h ? 360 : 270, 360+45);
+    }
   }
   if (which == FILL) {
     if (w < h)
-- 
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