From 27ca49efd3841c97e0f492e18dc0e506f89bcb7f Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Wed, 29 Sep 2021 11:19:03 -0600
Subject: [PATCH] canvas: generic Item::_size_allocate() must adjust allocated
 space to parent-relative coords

---
 libs/canvas/item.cc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/libs/canvas/item.cc b/libs/canvas/item.cc
index 6c4c66fc35..1f330dae3f 100644
--- a/libs/canvas/item.cc
+++ b/libs/canvas/item.cc
@@ -630,8 +630,15 @@ Item::size_allocate_children (Rect const & r)
 	 * Item's allocation.
 	 */
 
+	/* parent was told "you get width x height @ x,y""
+	 *
+	 * x must be 0 and y must be 0 in parent-relatve coordinates
+	 */
+
+	Rect parent_relative = r.translate (-_position);
+
 	if (_items.size() == 1 && _items.front()->layout_sensitive()) {
-		_items.front()->size_allocate (r);
+		_items.front()->size_allocate (parent_relative);
 	}
 }