8054572: [macosx] JComboBox paints the border incorrectly

Backport-of: 8082c24a0df3f4861ea391266bdfe6cdd1a77bab

Author: GoeLin

src/java.desktop/macosx/classes/com/apple/laf/AquaComboBoxUI.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -453,6 +453,31 @@ protected LayoutManager createLayoutManager() {
     }
 
     class AquaComboBoxLayoutManager extends BasicComboBoxUI.ComboBoxLayoutManager {
+        protected Rectangle rectangleForCurrentValue() {
+            int width = comboBox.getWidth();
+            int height = 22;
+            Insets insets = getInsets();
+            int buttonSize = height - (insets.top + insets.bottom);
+            if ( arrowButton != null )  {
+                buttonSize = arrowButton.getWidth();
+            }
+            int midHeight = (comboBox.getHeight() - height - (insets.top + insets.bottom)) / 2 - 1;
+            if (midHeight < 0) {
+                midHeight = 0;
+            }
+
+            if (comboBox.getComponentOrientation().isLeftToRight()) {
+                return new Rectangle(insets.left, insets.top + midHeight,
+                        width - (insets.left + insets.right + buttonSize) + 4,
+                        height - (insets.top + insets.bottom));
+            }
+            else {
+                return new Rectangle(insets.left + buttonSize, insets.top + midHeight,
+                        width - (insets.left + insets.right + buttonSize) + 4,
+                        height - (insets.top + insets.bottom));
+            }
+        }
+
         public void layoutContainer(final Container parent) {
             if (arrowButton != null && !comboBox.isEditable()) {
                 final Insets insets = comboBox.getInsets();
@@ -476,8 +501,6 @@ public void layoutContainer(final Container parent) {
 
             if (editor != null) {
                 final Rectangle editorRect = rectangleForCurrentValue();
-                editorRect.width += 4;
-                editorRect.height += 1;
                 editor.setBounds(editorRect);
             }
         }