From 5630c161eac90c99cf9f6b738c752152d338b08b Mon Sep 17 00:00:00 2001
From: Dar <dar@classx.it>
Date: Tue, 9 Jan 2024 16:58:21 +0100
Subject: [PATCH] fix: restore the renderer background after hover

The table header background is never restored after hover when the label renderer is opaque
---
 .../main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
index 14a6e16f..5bdc2524 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableHeaderUI.java
@@ -360,6 +360,9 @@ public class FlatTableHeaderUI
 			Icon oldIcon = null;
 			int oldHorizontalTextPosition = -1;
 
+			// needed when we have to restore the label background after hover and the renderer is opaque
+			boolean restoreBackground = false;
+			
 			// hover and pressed background/foreground
 			TableColumn draggedColumn = header.getDraggedColumn();
 			Color background = null;
@@ -377,6 +380,7 @@ public class FlatTableHeaderUI
 			if( background != null ) {
 				oldBackground = l.getBackground();
 				oldOpaque = l.isOpaque();
+				restoreBackground = true;
 				l.setBackground( FlatUIUtils.deriveColor( background, header.getBackground() ) );
 				l.setOpaque( true );
 			}
@@ -415,7 +419,7 @@ public class FlatTableHeaderUI
 			}
 
 			// restore modified renderer component properties
-			if( oldBackground != null )
+			if( restoreBackground )
 				l.setBackground( oldBackground );
 			if( oldForeground != null )
 				l.setForeground( oldForeground );