From 468c66e8427130f6fd20da6cacd9a02d48b8d5f2 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Mon, 6 Jul 2020 14:45:52 +0200
Subject: [PATCH] Window decorations: hide window icon if InternalFrame.icon is
 null or its width or height is zero

---
 .../src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java     | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
index 5e2f442b..d0c75b79 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
@@ -284,6 +284,8 @@ public class FlatTitlePane
 		else {
 			// no icon set on window --> use default icon
 			Icon defaultIcon = UIManager.getIcon( "InternalFrame.icon" );
+			if( defaultIcon != null && (defaultIcon.getIconWidth() == 0 || defaultIcon.getIconHeight() == 0) )
+				defaultIcon = null;
 			if( defaultIcon != null ) {
 				if( defaultIcon instanceof ImageIcon )
 					defaultIcon = new ScaledImageIcon( (ImageIcon) defaultIcon, iconSize.width, iconSize.height );